U-Type Constant Spring Supports Designed for a Power Plant

January 2, 2024

U-Type Constant Spring Supports Designed for a Power Plant

Type: Constant Spring Supports
Material: Carbon Steel | HDG | PTFE, 25% Glass Filled
Design: 8,200 lb. Load | 11-1/2″ Total Travel
Testing: Standard Load and Travel Test

PT&P designed and manufactured 48 constant spring supports for a power plant in Mexico. The constants pictured above are Fig. 200 U-type constant spring supports fabricated from A-36 carbon steel and include PTFE, 25% glass-filled slide plates bonded to the load flange. The supports are 39″ H x 26″ W x 80″ L and are designed for operating loads up to 8,200 lb., with a total travel of 11-1/2″. These are horizontal constants designed to support piping from below in conjunction with a pipe saddle. All the constants went through standard load and travel testing per MSS Standards prior to shipment.

Constant spring supports find applications in various fields and can be made from diverse materials tailored to specific end applications. These supports are integral in industries such as petrochemicals, LNG, refining, power generation, steel mills, and geothermal plants, among others. In the past, obtaining a custom-designed constant spring support posed a significant challenge in terms of both design and manufacturing, with lead times extending to a minimum of 6-8 weeks.

Through a dedicated focus on manufacturing optimization and employing a design-centric engineering approach, we have successfully reduced the required time by more than half. Now, the process of acquiring custom constant spring supports is significantly streamlined. In fact, we are capable of fulfilling emergency orders in less than 24 hours, taking into account the client’s location and urgent requirements.

PT&P REF. ORIGINAL POST 08202017

Constant Spring Supports Custom-Designed for a Large Crude Oil Processing Facility

November 28, 2023

Constant Spring Supports Custom-Designed for One of the Largest Crude Oil Processing Facilities in the World

Piping Technology & Products custom-designed constant spring supports for crude oil processing at one of the largest refineries in the world. Petroleum refineries change crude oil into products such as jet fuel, gasoline, polypropylene, polyethylene, propane, sulfur, carbon black feed, and diesel that can be used for transportation, heating, feedstocks for making other chemicals, generating electricity, renewable energy, and paving roads. Piping Technology and Products was awarded this project because we were the only engineering manufacturing firm vendor of constant spring manufacturers in the world that could both design, manufacture, and test these units for the unique design conditions. These constant springs will support loads ranging from 88,185 lb. to 143,300 lb. They are designed for temperatures up to 650°F, and movements of 0.39" up, 4.72" down, -2.36" up, and 0.39" down. The Type-C constants are 67" H x 21" W x 88.25" L and the Type-F constants are 85" H X 39.75" W x 86.56" L.

The F-Type springs will include graphite slide plates and are designed to support the piping from below while allowing both lateral and axial movement. All constant assemblies underwent magnetic particle inspection of welds, travel, and compression tests. Additionally, a special “cramp test” was conducted on each spring coil. A "cramp test" is done by compressing the spring coil by a specified length for a specific period of time. This assures the spring’s functionally especially when a large "wire diameter" is used to manufacture the spring coil for these high loads. At Piping Technology and Products and our subsidiaries, we specialize in designing pipe supports, expansion joints, and insulated supports for unique applications involving products not readily available. Our products are used in the CDU (crude distillation units), hydrocracking units, RFCC (residual fluid catalytic cracking), naphtha hydrotreater, and hydrodesulfurization units (also known as alkylation unit), and sulphuric acid regeneration (SAR) units in refineries.

PT&P REF. ORIGINAL POST 07272021

Constant Spring Support Assemblies for an LNG Plant in Central Africa

September 26, 2023

PT&P Designed and Fabricated Constant Spring Support Assemblies for an LNG Plant in Central Africa.

Type: Constant Spring Supports
Material: A36 Carbon Steel w/ HDG Finish
Design: 1,790 lb. Load | 8″ Vertical
Testing: Load and Travel Tests

These constant spring supports were modified to increase their installed height. The constants range in size from 20.5″ in height 38.75″ in length, and 13″ in width. They’re designed for up to 1790 lb. load and a vertical movement range of 8″. All constants were fabricated from A-36 carbon steel and hot-dipped galvanized. Each assembly went through standard load and travel testing per MSS Standards. The constants were shipped within 6 to 8 weeks to a Liquefied Natural Gas (LNG) plant in Africa.

LNG is natural gas cooled down until it reaches a liquid state. In its liquid state, natural gas is easier to transport by large ships when pipelines are not feasible. Over the years, we have supplied insulated and spring hanger supports to gasification and degasification plants. Our long history in the arena has helped us become the vendor of choice by offering the full scope of our services from testing, engineering & design, manufacturing, and Field Service.

For this application, our constants were designed and manufactured with carbon steel; however, depending on application requirements, such as a furnace, we can also provide constant spring supports utilizing stainless steel material, which accommodates high temperatures and corrosive environments. We created the world’s smallest constant spring support. Our nano constant is ideal for such applications:

Constant Spring Supports

The applications for constant spring supports range in industry verticals we have built and designed for. In addition to LNG clients, we have designed and built constants for refineries, geothermal plants, petrochemical plants, and renewable energy facilities. The use applications include coker replacement, debottlenecking of the furnace, installation of a new VDU (vacuum distillation unit) heater, tube and heater replacement, and flare gas recovery units. Constant spring supports alongside our portfolio of products are shipped worldwide from our Houston, Texas headquarters, where all our products are manufactured. We are open for plant tours. If you are interested, please let us know so we can schedule some time with your team.

 

PT&P REF. ORIGINAL POST 06192018

U-Type Constants Designed with Slide Plates for a Polypropylene Plant in Texas

July 4, 2023

147164a1

PT&P designed and fabricated a U-Type constant spring support , with PTFE and a 25% glass-filled side plate for a Polypropylene Plant in Texas. The constant is fabricated from carbon steel and hot-dipped galvanized for extra protection against corrosion. The vertical movement is 1.5" total upward travel and is capable of supporting a load of 10,350 lbs. throughout its range of movement. The constant underwent standard load testing prior to shipment.

Along with chemical plants, constant spring supports are utilized in refineries, power plants, and heat recovery steam generators (HRSG). The design of the constant spring support replaced a system of pipe support called a "counterweight" design still used in some facilities today. The counter-weight system utilized pipe clamps or lugs (attached or welded to the pipe), cables, pulleys, and a set of weights. Just like the old-fashioned brass weighing scales, weights were added to one end of the pulley system until an equilibrium was reached. The counterweight design needed a large amount of space with which to operate. Constant spring hangers replaced this system because they require much less space in order to function (similar to some designs we stand on to weigh ourselves). No matter the application, our team of experienced engineers and designers can help to resolve your pipe support needs. Please contact us via our 24×7 emergency service or send an email to info@pipingtech.com.

PT&P REF. ORIGINAL POST 08232016

Constant Spring Supports Custom Designed for a Power Plant in Egypt

April 18, 2023

Constant Spring Supports Custom Designed for a Main Stream System at a Power Plant in Egypt

Type: Constant Springs & Alloy Clamp Assemblies
Size: 48″ H x 57″ L x 24″ W | 36″ dia. Clamp
Materials: Carbon Steel with HDG Finish | Alloy
Design: 1070°F | 7-1/2″ Total Travel | 24,712 lb. Load
Testing: Load and Travel Test

PT&P custom-designed and manufactured constant spring supports for a mainstream system at a power plant in Egypt. The constants include alloy clamps designed for a 900 mm (approximately 36″ dia.) pipe. They are 48″ H x 57″ L x 24″ W with 7-1/2″ total travel from the cold position. We also supplied alloy clamps designed for an operating temperature of 1070°F. The constants are fabricated from A36 carbon steel and include a hot-dip galvanized protective coating. They are designed for an operating load of 24,712 lb. The constants have been modified to accommodate a specialized spring coil and modified casing in order to fit the existing space or envelope. Standard travel and load tests were performed prior to shipping.

Constants can be used with rollers, travelers, or slide plates to accommodate lateral or axial movement in the pipeline system in plants such as solar, geothermal, soybean crushing, ethanol, and other green energy facilities. Our company and its subsidiaries work with over 90% of the leading green energy providers in the world.

Our Field Service team, along with our pipe support engineers and designers, can also conduct inspections of existing supports, provide consultation on-site remediation, and oversee installation on both a short-term and long-term basis catering to facilities worldwide. So whether a “grassroots project” or an existing plant that has been in service for years, we offer cost-effective products and services.

PT&P REF. ORIGINAL POST 10092018

Constant Assemblies Custom-Designed for Hot Service at a Leading Plastic Manufacturing Plant in North Carolina

February 28, 2023

Constant Assemblies Custom-Designed for Hot Service at a Leading Plastic Manufacturing Plant in North Carolina

Type: Custom-Designed Constant Spring Supports
Size: PTP-100 B-Type | 16” x 24” x 30”
Material: A36 Carbon Steel | Hot-dipped Galvanized| Epoxy Coating
Design: Load Range: 2,280 lb. to 7,143 lb. | 2″ Total Travel
Testing: Q.C. Inspection | Load and Travel Tests

PT&P custom-designed Constant Spring Support with travel stop adjustment rods for a manufacturing company. We “re-created” the design of constants sold years ago by our now sister company, Fronek Anchor/Darling. The constants needed to fit the “envelope” or space of the original constants sold to this client for an application in an existing plant. The constants were fabricated from A36 carbon steel, hot-dipped galvanized, and painted with an epoxy coating. The assemblies are designed for an operating load ranging from 2,280 lb. to 7,143 lb. with 2″ of total travel. Standard load and travel test and Q.C. inspections were completed prior to shipment to North Carolina.

We have a great deal of experience manufacturing constant spring supports similar to that of existing constants if needed to fit existing space limitations. We can also refurbish constants manufactured by competitors if the units are repairable. So whether the constants are for large duct systems in power and refining plants or focused around renewable, carbon-neutral plants, we can assist our clients to find a cost-effective solution.

PT&P REF. ORIGINAL POST 08042020

Constant Spring Supports for an Oil Refinery in Texas

December 27, 2022

Custom Designed U-Type Constant Spring Supports for an Oil Refinery in Texas

Type: Constant Spring Supports
Material: Carbon Steel w/ HDG Finish
Design: 4,000 lb. Load | 3 1/2″-9 1/2″ Vertical
Testing: Load and Travel Tests

PT&P custom designed and manufactured ten 200 U-Type constant spring supports with slide plates for an Oil Refinery in Texas. They are fabricated from A36 carbon steel with an HDG finish for plates, angles, and cans. Its dimensions are 31″ in height and 52″ in length with 19″ in width. They are designed for a movement of 3 ½” up to 9 ½” and an operating load of 1100 lbs up to 4800 lbs. They were custom designed to match the box dimensions of a competitor. The units had a Standard Load Test performed prior to shipment.

Constant springs are sometimes installed near rotating equipment such as pumps and compressors used in manufacturing, mining operations, utilities, oil and gas extraction, and cross-country pipelines. By providing constant support to piping leading to rotating equipment subject to both vertical and horizontal movement, these types of spring hangers help to decrease stresses imposed on rotating equipment, thereby extending the life of the bearings and seals within these units.

At Piping Technology and Products, our commitment to continuous improvement has helped us to become a leader in the industry by providing the highest quality products and services.

PT&P REF. ORIGINAL POST 10202020

Constant Spring Supports with Stainless Steel & Graphite Slide Plates

November 13, 2022

U-Type Constant Spring Supports in Texas

Type: Constant Spring Supports
Size: 35-7/16″ Height & 75-3/4″ Length
Material: A36 Carbon Steel with HDG | 304 Stainless Steel
Design: 9″ Total Travel at 979°F | Operating Load 6,183 lb.
Testing: Hydro tested at 6,744 lb.

These 200 U-Type constant spring supports with slide plates were designed by PT&P for a plant in Texas. They are fabricated from A36 carbon steel with an HDG finish and are typically designed for vertical movement only. However, when there is lateral or axial movement in the piping system, slide plates can be used in conjunction with these constants. In this instance, graphite slide plates are bolted to the constant’s load flange and used with an upper slide plate manufactured from 304 stainless steel with a mirror finish. The upper slide plate can be welded to the base of a pipe shoe, trunnion, or the saddle of a pressure vessel. Each of the constant spring dimensions are 35-7/16″ in height and 75-3/4″ in length. They are designed for a piping system with 9″ of total travel at 979°F and an operating load of 6,183 lb. Each of these units were load tested to meet the hydro test load of 6,744 lb. before shipment.

Products such as these are used in many different kinds of plants all over the world including refineries, renewable diesel plants, chemical plants for operations such as propane/propylene splitter units, and power plants. We have the ability to custom design and manufacture constants for specific loads and various environmental conditions. A point to note, we provided similar constant spring supports supporting loads over 150,000 lb. for crude oil processing at one of the largest refineries in the world just last year (view this project). Petroleum refineries change crude oil into products such as jet fuel, gasoline, polypropylene, polyethylene, propane, sulfur, carbon black feed, and diesel that can be used for transportation, heating, feedstocks for making other chemicals, generating electricity, renewable energy, and paving roads. Constants use a spring coil (or series of coils) to accommodate pipe movement from the initial (installed) condition to the final (operating) condition of the piping system. For all constant spring supports there is no difference in load and the supported load will remain uniform throughout the deflection cycle. Learn more about constant spring supports

 

PT&P REF. ORIGINAL POST 01122018

Constant Spring Supports for Heat Recovery Steam Generators (HRSG)

October 4, 2022

Custom Constant Spring Supports for Heat Recovery Steam Generators

PT&P custom-designed constant spring support assemblies for a heat recovery steam generator at a combined-cycle power plant. These power plants utilize gas turbines, steam turbines, heat exchangers along with other components to make use of “exhaust waste” for a more efficient system. These 200-F Type constants were fabricated from A36 carbon steel and include a hot-dipped galvanized finish. The spring coils are formed from alloy steel and are neoprene coated. They are designed for an operating load of up to 886 lb., and up to 6″ of maximum travel. They are designed to be placed beneath the unit being supported and allow for movement in the vertical direction (up or down). The dimensions are 13″ W x 31″ L x 18-1/2″ H. Standard load and travel tests along with a quality control inspection were conducted prior to shipment. Since the mid-1970s, we have been working with power plants and have deep expertise in the evolution of power plant design over the last 40+ years, including the impact that it has had on Pipe Stress Engineering requirements. We have supplied products and services for a wide variety of power plants including Coal, Natural Gas, Biomass, Solar, Wind, Geothermal, Nuclear, and Hydroelectric. As the only major Global Provider of Expansion Joints, Engineered Pipe Supports, and Pipe Stress Engineering, we have the ability to provide unique solutions and solve the most challenging scenarios that may arise.

PT&P REF. ORIGINAL POST 01062021

Custom Designed Constant Spring Supports for a Chemical Plant in Singapore

August 23, 2022

Custom Designed Constant Spring Supports for a Chemical Plant in Singapore

Type: Constant Spring Supports
Size: 15-¼” W x 17″ H x 46″ L with 9-¼” OD
Material: Carbon Steel | Hot-dipped Galvanized
Design: 2,379 lb. Load | 10″ Upward Movement

PT&P custom designed and manufactured constant spring supports for a chemical plant in Singapore. The constants are fabricated from A36 carbon steel and include alloy coil springs. The dimensions are 15-¼” W x 17″ H x 46″ L with 9-¼” OD. They were designed for an operating load of 2,379 lb. and movement of 10” upward and were specially designed to incorporate “telescoping spring coil housings ” and painted to protect against corrosion. Standard load and travel tests were performed prior to shipment. As part of the standard quality control process, we test every constant that we build before it is shipped. We are ISO-9001:2015 Certified by DNV GL. Last year we built over 1500 constants alone for our customers. Some were designed to support loads up to 150,000lbs with movements over 48 inches.

These specific constants were for a plant that manufactures industrial gasses such as hydrogen, carbon monoxide, and synthesis gasses. Constant spring assemblies are used in a variety of applications ranging from CDU (crude distillation units), hydrocracking units, RFCC (residual fluid catalytic cracking), naphtha hydrotreater and hydrodesulfurization units (also known as alkylation units), and sulphuric acid regeneration (SAR) units in refineries, LNG, Geothermal, Coker units, HRSG units, and other facilities where there is substantial thermal growth in the piping. They can be configured to accommodate horizontal or vertical movement.

Constants use a spring coil (or set of coils) to accommodate pipe movement from the initial (installed) condition to the final (operating) condition of the piping system. For all constant spring supports there is no difference in the load to be supported. Instead, these spring supports are designed to accommodate movement due to thermal expansion or contraction. PT&P has set up its manufacturing department to offer an unparalleled set of customization options with minimal impact on delivery timeframes. In addition to our standard (hot-dipped galvanized, neoprene coated spring coils) variable spring supports, we can customize any material, finish, dimension, load, load adjustment, travel, travel stops, and provide sensors for remote monitoring.

PT&P REF. ORIGINAL POST 12112018

Constant Supports Custom-Designed for an Ethane Cracker

May 24, 2022

Constant Spring Supports Custom-Designed with Brush Strip on Horizontal Travelers for an Ethane Cracker

These constant spring supports for an ethane cracker for one of our largest and oldest customers who we worked with almost daily for years. As a matter of fact, a majority of the hangers in this plant are supplied by PT&P dating back to 1971. Today, the new cracker project was designed to take advantage of cheap shale-derived ethane feedstock.

The constant supports were supplied with horizontal travelers with a special “brush strip” help limit the entry of foreign objects. The constants are designed to support an 8” diameter pipeline leading into a furnace. Each spring coil is neoprene coated and the spring can housing is hot-dipped galvanized to protect against corrosion. This type of rigid spring hanger uses a coil or series of coils to accommodate pipe movement throughout the piping system. These particular constant assemblies are designed for horizontal movements ranging from 1” to 6.6” and loads up to 1320 lb. We can customize any material, finish, dimension, load, load adjustment, travel, and travel stops, as well as provide sensors for remote monitoring.

This project was unique in design and testing requirements requested by the client and their customer. Every constant support we build is load-tested by our quality and production teams. In some cases, the customer will ask to witness the testing of a single unit which we do on a regular basis. However, for this project, every constant spring was witness tested with the client’s inspection and engineering teams located at our manufacturing facility utilizing our custom in-house designed test machine.

Constant Supports Designed with Bronzphite® Slide Plates for Oil Refinery in China

April 4, 2022

These big-ton constant spring supports with Bronzphite® slide plates were designed for a 400 KTA light oil processing and utilization unit in Southeast Asia. The constants are designed for high loads and utilize self-lubricating bearing plates consisting of high-quality bronze and graphite-filled grooves. Bronzphite® can be used where temperatures are up to 1100°F and for high loads, low-velocity applications, and in places where the use of oil or grease is undesirable or unfeasible.

Big Ton Constant Supports Designed with Bronzphite® Slide Plates for Oil Refinery in China

PT&P custom-designed and manufactured a total of four big ton constant spring supports w/ Brozphite® slide plates for a 400 KTA light oil for a processing and utilization unit at one of the largest of largest oil refineries in China. In US refineries, crude oil still makes up a majority of what is produced today: Us energy info admin petroleum supply

These constant assemblies were fabricated from carbon steel and hot-dipped galvanized for extra protection against corrosion. The bronze plate acts as the bearing surface, supporting heavy loads, while the graphite inserts provide a solid, oil-free sliding surface. They are designed for operating temperatures up to 1100°F and an operating load of 187,393 lb., with 1-1/2″ total travel.  It is through the combination of high-strength bearings and impregnated graphite that it is an ideal environment for maintaining excellent wear resistance and durability under severe operating conditions.  Load and travel testing was performed prior to shipment.

Bronzphite slide plate

For this particular crude oil production and mining facility, we also supplied other key products from our portfolio, including variables, snubbers, sway braces, and sway struts. Petroleum refineries change crude oil into products such as jet fuel, gasoline, polypropylene, polyethylene, propane, sulfur, carbon black feed, and diesel that can be used for transportation, heating, feedstocks for making other chemicals, generating electricity, renewable energy, and paving roads.

As an industry leader in the oil, gas, and petrochemical industries for over 47 years, we specialize in designing pipe supports, expansion joints, and insulated supports for unique applications involving both products readily available and products not readily available. Our products are used in the CDU (crude distillation units), hydrocracking units, RFCC (residual fluid catalytic cracking), naphtha hydrotreater, hydrodesulfurization units (also known as alkylation units), and sulphuric acid regeneration (SAR) units in refineries.

 

PT&P REF. ORIGINAL POST 09252017

F-Type Vertical Constant Spring Supports for a 9,000 lb. Load

October 26, 2021

 

Ptp constant spring supports 83774 r2

PT&P manufactured compact spring supports designed for loads up to 9,000 lb. Constants are used in Geothermal, Coker units, HRSG units, and other facilities where there is substantial thermal growth in the piping. Green energy (popular to offset carbon emissions) applications such as solar, wind, and hydro also utilize constants. The figure 100 type-F constant spring supports are designed to support piping from below using a sway strut because horizontal space was not available in the system. This vertical constant spring support was the first of its kind designed and manufactured by PT&P for the largest power providers in the South using a diverse fuel and energy supply of coal, nuclear, oil, gas, hydro, and some renewable energy. The base plate is bolted directly to the top of the steel or floor and the sway strut assembly is attached to the arm (cam) of the constant. With the constant bolted in position below the piping and the sway strut assembly attached via a pipe clamp above, when the pipe goes through its upward vertical movement, the constant maintains an equal and opposite force on the piping. If there is also horizontal movement (axial or lateral) in the piping, this type of constant is well suited because of the slight “arch” in the travel path of the internal cam. The constant in the first picture maintains a constant load of 7,000 lb. while the constant in the second picture maintains a load of 9,000 lb. on the pipe throughout its 4” of total travel. They are 36” high with two gussets at the base plate for added strength encountered under hydrotest loading. They are fabricated from A36 carbon steel and hot-dipped galvanized for corrosion protection. Standard load and travel testing were performed on both constants to ensure proper field operation. Piping Technology is a leader in the design, engineering, and manufacturing of pipe supports and our products have been in service for over 40 years.

Constant Spring Supports for a Leading Energy Transportation and Midstream Service Provider

October 27, 2020

Constant Spring Supports Custom-Designed for a Leading Energy Transportation and Midstream Service Provider

PT&P custom-designed constant spring support assemblies for an energy facility in Canada. These 100–E Type (layout B) constants were supplied with an extended hanger rod and fabricated from A36 carbon steel with 5160 alloy steel coil springs. They are designed for an operating load from 2,370 lb. to 9,240 lb., and movements from 1-1/2” to 8-1/4”. The dimensions are 12” W x12” L x 30” H and 14” W x 19” L x 53” H. Load and travel tests along with a quality control inspection were conducted prior to shipment.

U-Type Constant Spring Supports with Stainless Steel Slide Plates

September 30, 2020

 U-Type Constant Spring Supports with Stainless Steel Slide Plates

PT&P custom-designed U-type constant spring supports for an oil refinery in Texas. Constants can be utilized in refineries within blocks such as hydrogenation units, naphtha desulfurization units, and fluid catalytic crackers. The spring’s frame is manufactured from A36 carbon steel and hot-dipped galvanized to protect against corrosion. For instances where there was axial and lateral movement, 240 Gr. 304 slide plates were installed on the load flanges of the constants. The constants supplied are designed for an operating load ranging from 1,085 lb. up to 17,480 lb. and horizontal travel from 2.5” to 6”. The overall dimensions range in size from 17” H x 20” W x 31” L to 28” H x 26” W x 66” L. Load and travel tests per industry standards were performed prior to shipment.

F-Type Constant Spring Supports Designed and Manufactured for Gas Plant

April 20, 2020

F-Type Constant Spring Supports Designed and Manufactured for Gas Plant

Type: F-Type Constant Spring Supports
Size: 36″- 87″ Length | 24″ Height
Material: A36 Carbon Steel | HDG | SS Slide Plates
Design: 13,500 lb. Load | 250°F | 17.5″ Travel
Testing: Q.C. Inspection | Load and Travel Tests

PT&P custom-designed multiple horizontal F-Type constant spring supports for a gas plant in Saudi, Arabia. The constants are provided with stainless steel slide plates and custom-designed for 17.5” total travel. They are fabricated from carbon steel, hot-dipped galvanized and painted to withstand a highly corrosive environment. The assemblies are 24” in height, 36” – 87” in length, designed for an operating temperature of 250°F and loads up to 13,500 lb. Load tests and dye penetrant testing was conducted prior to shipment.

Constant Spring Supports Designed for up to 9-1/2” of Travel

November 18, 2019

 

Constant Spring Supports Designed for up to 9-1/2” of Travel

Type: Constant Spring Supports
Size: 29″ L x 14″ W x 18-3/4″ H |  76″ L x 26″ W x 37-3/8″ H
Material: A36 Carbon Steel | HDG | Neoprene
Design: 124 lb. to 10,570 lb. Load | 3-1/2″ to 9-1/2″ Travel
Testing: Q.C. Inspection | Load and Travel Tests

PT&P designed and manufactured U-Type and D-Type constant spring supports for a facility in Mexico. The constants frames are fabricated from A36 carbon steel and have a hot-dipped galvanized coating. The spring coils are alloy steel and have a neoprene coating. The dimensions range from 29” L x 14” W x 18-3/4” H to a max of 76” L x 26” W x 37-3/8” H. The 200-U-Type constants were supplied with graphite plates on the load table. The supports range in load from 124 lb. to 10,570 lb. The total travel ranged from 3-1/2” to 9-1/2”. Standard Q.C., load and travel tests were performed.

100-E Type Constant Spring Supports Custom Designed for a Power Plant in Canada

December 11, 2017

100-E Type Constant Spring Supports Custom Designed for a Power Plant in Canada

Type: Constant Spring Supports
Size: 52 1/4″ x 62 1/8″
Material: Carbon Steel
Design: Operating Load 21,600 to 26,350 lbs & of 3-7” of Movement
Testing: Standard Load & Travel Tests

PT&P custom designed and manufactured constant spring supports for a power plant in Canada. A total of four constant assemblies were fabricated from carbon steel. The customer designed with dimensions of 100-73-E, & 100-69-E with a thermo chemical process. They are designed for operating load 21,600 to 26,350 lbs and operating movement of 3-7” of movement. Load and travel testing were performed prior to the shipment.

Constant Spring Supports Design and Application Webinar

November 27, 2017

** Turn up your speakers to hear the audio. Please be patient as the screen will become visible
shortly after the speaker begins the presentation. You may click the monitor icon below each
video to view the webinar in full-screen mode.

NOTE: PDH credits are NOT offered for our recorded webinars.

View the Slides for Above Webinar Here

How to Remove Travel Stops from a Constant Spring Hanger

Top