Tag: pipe hanger

Custom Constant Spring Hangers and Pipe Clamps

June 8, 2010
Custom Constant Spring Hangers And Pipe Clamps
Custom Constant Spring Hangers and Pipe Clamps

The constant spring hangers are manufactured from A36 carbon steel and have custom 4-bolt pipe clamps due to heavy loads. The dimensions are 40″ length x 18″ width x 85″ height and are designed for a 1,784 lb. load with 10″ of travel. The constants will be used to support radiant inlet manifolds and have a unique paint applied due to the highly corrosive condition. The entire pipe hanger assembly went through load and travel testing prior to shipping.

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Big Ton Springs with a Custom 3-Coat Paint System

May 18, 2010
Big Ton Springs With A Custom 3-Coat Paint System
Big Ton Springs with a Custom 3-Coat Paint System

PT&P fabricated big ton spring supports for an expedited delivery of six weeks from conceptual design to final delivery. The big tons measure 26″ long x 26″ deep x 34-5/8″ tall and will be used to support substantial vertical loads while simultaneously providing a base support structure. They are designed for operating loads of 36,000 lb. with a travel of .5625″ down.

Due to the harsh and corrosive environment, the exposed metal surfaces were finished with a three-coat urethane paint while the threaded components were cadmium plated with a blue Fluorocarbon coating. The big tons were also salt water spray tested according to ASTM B117 standards, and load tested to verify the springs’ functionality throughout the entire travel range.

Do you need big ton springs for your piping system? Get pricing today!
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F-Type Variable Springs with Slide Plates

May 4, 2010
F-Type Variable Springs With Slide Plates
F-Type Variable Springs with Slide Plates

PT&P fabricated variable springs from hot-dipped galvanized carbon steel components and a neoprene coated spring steel coil. P.T.F.E. slide plates are welded to the load flange to reduce frictional forces generated during lateral movement of the supported pipe. Internal guides are also installed to help maintain vertical alignment of all moving components throughout the anticipated thermal deflection cycle. The installed (cold) load is set to 10,413 lb. With a design travel of 0.720” up, the final operating (hot) load will be 8,974 lb. Each spring is equipped with travel stops and went through load testing prior to shipping.

Want to learn more about variable springs? Instantly view a past variables webinar!

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Big Ton Spring Supports with Slide Plates Designed for a Chemical Processing Plant

April 13, 2010
Big Ton Spring Supports For A Chemical Processing Plant
Big Ton Spring Supports for a Chemical Processing Plant

A total of 18 big ton springs of various sizes were fabricated from A516 Gr. 70N carbon steel. The big tons were designed in a rectangular configuration in order to match the existing vessel saddle supports and the concrete foundation below the springs. PTFE, 25% glass filled slide plates will be welded on the load flanges to allow horizontal movement in addition to the vertical movements specified. The largest of the big ton assemblies has an operating load of 79,000 lb. with a travel of .706″ down.

Want to learn more about big ton springs? Watch a recording of a spring support webinar now!

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Custom Vertical Constant Hangers

April 6, 2010
Custom Vertical Constant Hangers
Custom Vertical Constant Hangers

PT&P manufactured constant spring supports to custom dimensions of 21″ height x 13″ width x 7.5″ depth. The total travel is 7″, with an actual travel of 3.5″ in both up and down directions. The rated load is 180 lb. and they will be used to support pipe lines for a power plant in Louisiana.

Do you see a need for constant hangers in your plant? Get pricing today!
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Special U-Type Constant Spring Supports

January 19, 2010
Special U-Type Constant Spring Supports
Special U-Type Constant Spring Supports

PT&P designed a constant load support system for a fluid tank with a load of 105,000 lb. over an area of 5′ W x 20′ L. To prevent twisting of the fluid container, the support system is designed to allow for “level” vertical movement. This was achieved by using a special system composed of three U-Type constant units. Each unit employs two springs working in parallel with a common large base plate and a load flange to support the entire 5′ width of the container.

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Special U-Type Constant Spring Supports

The constants will support loads of 39,000 lb., 36,000 lb., and 30,000 lb., with a total travel of 4″ in the “upwards” direction. The spring coils were coated in neoprene, and all the other major components were hot dip galvanized to inhibit corrosion. These constants were constructed primarily from carbon steel with the use of stainless steel and PTFE, 25% glass filled slide plates.

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78″ Long 200 C-Type Constant Spring Assembly for a Power Plant

January 12, 2010
78&Quot; Long 200 C-Type Constant Spring Assembly
78&Quot; Long 200 C-Type Constant Spring Assembly
78" Long 200 C-Type Constant Spring Assembly

Each constant spring support is designed to carry a 27,200 lb. load and provide 13″ downward travel. Special spring coils are used in order to reduce the entire length of the pipe hanger assembly. The frame and all internal moving components’ geometry are optimized as well to reduce the overall size. In total, the frame and casing combination measure 78″L x 21½”W x 33¾”H. The customer requested frame modification for special lug locations.

Do you require constant spring assemblies for your plant? Get pricing today!
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Variable Spring Supports for an Off-Shore Oil and Gas Refinery

January 5, 2010
C-Type Variable Spring Support Assemblies
C-Type Variable Spring Support Assemblies

The C-Type variable spring assemblies range in overall length from 3′-2½” to 3′-5/8″, and the F-Type measures 1′-1½. The C-Type variables are designed with an operating load of 1653 lb. and a spring rate of 680 lb/in. The F-Type variable is designed with an operating load of 1511 lb. and a spring rate of 340 lb/in.

F-Type Variable Spring Support
F-Type Variable Spring Support

The variable supports will be utilized in a highly corrosive environment; therefore, Grade 316 stainless steel was used with a unique 3-coat paint system applied to the can housing.

C-Type Variable Spring Assembly
C-Type Variable Spring Assembly

Want to learn more about variable springs? Watch a past variable spring webinar now!

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Big Ton Spring Supports with Low Friction Rollers

December 29, 2009
Big Ton Spring Supports With Low Friction Rollers
Big Ton Spring Supports with Low Friction Rollers

PT&P fabricated several big ton spring assemblies consisting of two different models for a refinery expansion project in India. The larger model has an operating load of 25,590 lb. and a design travel of .420″ up.

Big Ton Spring Supports With Low Friction Rollers
Low Friction Rollers

The smaller model has an operating load of 12,100 lb. and a design travel of .443″ up. The big tons will be utilized to support substantial vertical loads while simultaneously providing a large platform to accommodate axial movement of the piping system across the load flange. Low friction rollers are installed to reduce the sliding friction between the load flange and the bottom section of a pipe shoe.

Do you require big ton springs in your plant or refinery? Let us price them for you today!
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5′ 7-1/2″ Tall F-Type Variable Spring Support Assemblies for an Oil Refinery in California

December 22, 2009
5′ 7-1/2″ Tall F-Type Variable Spring Support Assemblies
5′ 7-1/2″ Tall F-Type Variable Spring Support Assemblies

PT&P designed and fabricated F-type variables for an oil refinery in California. The variable springs are designed for an operating load of 49,771 lb. and an installed load of 43,000 lb. Two coils are used in tandem to achieve a vertical movement of 1-5/8″ downward. The variables are fabricated from hot-dipped galvanized carbon steel and are customized with an extended load column to reach an installed height of 67-1/2″. The variables for this project are the largest standard double springs offered; however, PT&P can customize to any load specification. Standard load testing was performed prior to shipment.

Want to learn more about variable springs? Instantly view a past variables webinar!
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Constant Spring Assemblies Custom Designed for Replacement of Failed Supports

December 15, 2009
Constant Spring Assemblies Custom Designed For Replacement Of Failed Supports
Constant Spring Assemblies Custom Designed for Replacement of Failed Supports
Constant Spring Assemblies Custom Designed For Replacement Of Failed Supports
Failed Constants

This initial order included PT&P’s field services division testing and recalibrating four constant spring supports not manufactured by PT&P. A preliminary inspection of the original constants revealed deformations in the spring coil housing. This is indicative of defective coils; therefore, before any load tests were conducted, inspection windows were cut into the spring coil cover to confirm the initial hypothesis (Figure 2). Inspection of the coils revealed complete deterioration with broken and missing sections of the spring. Subsequent inspections of the remaining three assemblies illustrated similar failures. The original constants were then disassembled (Figure 3) to determine the feasibility of replacing only the coils while utilizing the original frame/cam components.

Constant Spring Assemblies Custom Designed For Replacement Of Failed Supports
Failed Constants

The original spring coils were different in spring rate, length, and diameter than any standard PT&P coils; therefore, multiple coils were required to duplicate the overall function of the existing coils. Using multiple coils also required modifications to the existing frames. In an effort to expedite the overall delivery schedule, entirely new constant springs were manufactured in one week (Figure 1). The four new constants measure 53″ long, 13″ wide and 86″ tall. They have a 18-3/4″ diameter spring coil with a coil housing of 20-1/2″ diameter. The new constant assemblies are designed for an operating load of 13,332 lb., travel of 13″ upward and 2″ downward for a combined total travel of 15″. A load test throughout the total travel range was performed on each constant.

Want to learn more about constant springs? Watch a recording of a past constant webinar today!
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F-Type Variable Springs with Fully Adjustable Travel Stops

August 18, 2009

F-Type Variable Springs With Fully Adjustable Travel Stops
F-Type Variable Springs with Fully Adjustable Travel Stops

 

Piping Technology & Products, Inc. manufactured a variety of F-type variable springs with loads ranging from 526 lb. to 33723 lb. These variable springs are fabricated from a combination of carbon steel and A193-B7 CroMoly steel with A304 stainless steel slide plates. The variable springs are modified to include fully adjustable travel stops. The first purpose of the adjustable travel stops is to aid by distributing the load evenly during the installation process. The second purpose is to allow spring adjustment to any load within the operating range.

Do you see a need for variable springs in your project? Get pricing today!
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U-Type Constants with Rollers to Reduce Friction

July 29, 2009
U-Type Constants With Rollers To Reduce Friction
U-Type Constants with Rollers to Reduce Friction
U-Type Constants With Rollers To Reduce Friction
Rollers

This constant utilizes sealed cam follower roller bearings in place of slide plates that are generally used between the moving table and stationary frame. The rollers help to reduce the friction on the table, reduce residual loads which improve constant deviation, and help to restrict table movement in horizontal directions. These U-Type constants are fabricated from A36 carbon steel with dimensions of 28″H x 37″L x 17″W. The boxing, bolting patterns and loading table location are custom designed per customer specifications. The design also includes a graphite plate bonded to the top of the load flange to reduce the friction between the constant load flange and the saddle support above it. The supports are designed to carry 3015 lb. of piping load with an upward travel of 6″. The constants underwent standard load and travel testing before being shipped to an energy plant.

Want to learn more about constant springs? Instantly view an archived constant webinar!
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C-Type Constant with Special Lugs for a Power Plant

April 8, 2009

 

 

C-Type Constant With Special Lugs
C-Type Constant with Special Lugs

This PT&P 100 C-Type constant spring support was designed in conjunction with special lugs to fit inside of a trolley. The lugs will provide for movement up and down, as well as extensive horizontal movement. This constant was fabricated entirely from A-36 carbon steel with a hot-dipped galvanize finish. The constant measures 16″ wide x 25″ long x 56″ high. It is designed to carry 16,164 lb. of piping load with a travel of 3 1/2″ downward. The lugs will fit within a trolley by a single pin connection. This configuration will prevent swinging by maintaining the constant in an upright position, which will ensure proper functionality and eliminate any load deviation.

Do you require constants for an upcoming project? Get pricing today!
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200 U-Type Constant Spring Supports with Slide Plates to Reduce Friction

March 25, 2009
200 U-Type Constant Spring Supports With Slide Plates
200 U-Type Constant Spring Supports with Slide Plates to Reduce Friction
200 U-Type Constant Spring Supports With Slide Plates
Slide Plate on Constant

These custom designed constants will be utilized for a heavy load of 109,000 lb. They are designed for a downward travel of 1 1/2″. In order to support the heavy load and low take-off, the constants are designed with an inner and outer spring coil with the outer coil measuring 56″L with a 18 3/4″ O.D. These U-Type constants are fabricated from A36 carbon steel with a hot-dipped galvanize finish.

The dimensions of the constant are 31″H x 90″L x 32″W. The image above shows a PTFE, 25% glass filled slide plate on top to reduce the friction between the constant load flange and the structure above the support. The constant also includes slide plates between the table and the frame of the constant to reduce the friction on the table and improve constant deviation.

Do you require similar spring supports for your job? Get pricing today!

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120 3/8″ Long Custom Variable Spring Supports with Four Individual Coils

March 11, 2009

120 3/8&Quot; Long Custom Variable Spring Supports With Four Individual Coils
120 3/8" Long Custom Variable Spring Supports with Four Individual Coils

These variable springs are custom designed from carbon steel material. The springs are fabricated with extra long housings to allow for a pre-compression lower than the standard. This ensured that the starting (cold) load of 26,745 lb. could be achieved. The springs are designed for a movement of 5.55″ downward, which would produce an operating load for each assembly of 38,305 lb. These springs are to be utilized in pairs together with a 22″ riser clamp to produce a 407″ total pipe hanger assembly length and an overall combined operating load of 76,610 lb.

Want to learn more about variable springs? Watch a past variable springs webinar today!
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B-Type Constants for an Oil Refinery

December 29, 2008
B-Type Constants
B-Type Constants

These A-36 carbon steel constants have a hot dipped galvanize finish and designed for an oil refinery. They have a single lug suspension and can support a piping load of 5,031 lb. The dimensions are 36 1/2″H x 21″L x 11 5/8″W. This type of spring support is designed to support the pipeline from above using a carbon steel clamp.

Want to learn more about constants? View a past constant webinar recording!
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F-Type Variable Springs for a Local Chemical Plant

December 22, 2008
F-Type Variable Springs With Slide Plates
F-Type Variable Springs with Slide Plates

Pictured above are F-type variable spring supports designed for a local chemical plant. They are designed for a vertical movement of 1/8″ and an operating load ranging from 638 lb. to 2,612 lb. Fabricated using A-36 carbon steel components from our shop inventory, these variables include PTFE, 25% glass filled, slide plates to allow for translational movement. Each spring is preset to the specified installed load prior to shipment.

Do you see a need for variable springs in your plant? Get pricing today!
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A-36 Carbon Steel G-Type Constant on a Rush Basis

November 12, 2008
Refurbished A-36 Carbon Steel G-Type Constant On A Rush Basis
Refurbished A-36 Carbon Steel G-Type Constant on a Rush Basis
Refurbished A-36 Carbon Steel G-Type Constant On A Rush Basis
Damaged Constants in the Field

This constant spring support is fabricated from A-36 carbon steel and measures 39″ long x 29″ high x 11″ wide. This replacement support is designed to carry 11,000 lb. of piping load with a travel of 2 1/2″ upward. The limiting design factor was to stay within existing structural boundaries while allowing the constant assembly to move through its designed travel range.

Do you require g-type constants for your upcoming project? Contact us for pricing!

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A-Type Variable Spring Supports with a Load Capacity of 596 lb.

August 29, 2008
A-Type Variable Spring Supports With A Load Capacity Of 596 Lb.
A-Type Variable Spring Supports with a Load Capacity of 596 lb.

 

A-Type Variable Spring Supports With A Load Capacity Of 596 Lb.
Drawing of Variable Spring

Fabricated from A-36 carbon steel, these PTP-4 A-Type variable spring supports measure 6 5/8″ OD x 19 9/16″ in length with an installed load of 596 lb. They have a spring rate of 56 lb/in., and a downward travel of 1.375″. These supports are designed to suspend from a rod that is threaded through the upper portion of the variable (see Fig. PTP-4). This particular design is generally used to keep the variable further away from the beam to avoid interference.

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