Type F Variable Springs With Specially Made Locking Devices
November 3, 2001
Type F Variable Springs With Specially Made Locking Devices
Piping Technology & Products, Inc. specially designed twelve Type-F variable spring hangers (4-160-F, 8-170-F, 8-180-F) for an oil refinery in Indiana. These variable spring hangers were custom designed to support a Hydro-Test load 4.5 to 5 times the design load, which ranged from 7,988 lb. to 13,075 lb. The spring rates of the variable spring hangers ranged from 500 lb./in. to 750 lb./in. with travels of 1.15″ to 2.82″, upward movement respectively. The locking devices for these springs were manufactured using basic materials (rods, hex nuts and heavy pipe wall) and a special pressure plate to accommodate the application design criteria requested by the client. The base plate designed for these F- Type cans were modified to accommodate the locking devices.
Learn more about variable springs by visiting our webinar archives!
U-Type and F-Type Constant Spring Supports
October 30, 2001
U-Type and F-Type Constant Spring SupportsF-Type Constants
Piping Technology & Products, Inc. designed, manufactured and delivered a total of 8 constants to a power plant in Mexico. The designs consisted of 4 Horizontal U-Types Upthrust (Figure 1) and 4 Vertical F-Types (Figure 2) that are to support 24-inch diameter pipes. Each consisted of different sizes. The constants are designed for loads of 2,839 lbs. to 8,963 lbs., for Total Travels ranging from 7 to 3 inches. Constants were painted CZ-11 per customer request.
Learn more about constant springs by visiting our webinar archives!
Custom Pipe Supports and Constants Assemblies For An Oil Refinery In Mexico
October 12, 2001
Custom Pipe Support Assemblies For An Oil Refinery In MexicoCustom Pipe Support Assemblies
Piping Technology and Products designed and built 24 custom pipe support assemblies to meet the unusual needs of an oil refinery in Mexico. The pipe hanger assemblies each consisted of a 200 E-type constant spring support and a cradle assembly. The constants are designed for loads of 9856 lb. to 13,288 lb., and for total travels ranging from 3.5″ to 5.5″. Operational conditions dictated that the constant springs have settings for emergency and start-up, in additional to the standard settings of cold for shipping, and hot for normal operations.
The cradle assemblies attached to the constants are to support pipes with operational temperatures of 1070°F to 1100°F. Thus while the constants could be made of A-36 steel, the assemblies could not. The pipe saddle itself was made by splitting a section of A387-11 chrome alloy pipe. The other support components were all made of 304 stainless steel. This includes a 1-3/4″ Eye Rod, two 27″ I.D. U-bolts, and two 33″ lengths of 3″ diameter SCH. 80 pipe.
Do you need custom pipe supports for an upcoming project? Get pricing today!
68" In Height Vertical Upthrust Constants
September 7, 2001
68" In Height Vertical Upthrust Constants
Piping Technology & Products, Inc. designed and built two, 68″ in height 100 U-Type constants for a power plant in Mexico. The vertical upthrust constants were designed to support 48,500 lb. each with a total upward travel of 3″. In order to prevent buckling of the constant housing, each constant was designed with five C7 x 14 3/4 lb. channels and a base plate of 26 3/8″ x 33 1/4″. These unique 100 U-Type upthrust constants were custom designed by PT&P to accommodate limited horizontal space requirement. The constants will be placed opposite to each other on a beam capable of supporting 99,000 lb. load of the pipe, plus the weight of the constants.
Want to learn more about constants? Visit out webinar archives today!
60,000 Lb. Load Type "B" Variable Spring Hangers
June 27, 2001
60,000 Lb. Load Type "B" Variable Spring Hangers
PT&P specially designed two Type “B” variable spring hangers (2-250-B) for an oil company in Ryazan, Russia. These variable spring hangers were custom designed to support a load of 60,000 lbs. with a spring rate of 3,648 lbs./in. respectively. Due to loading requirements, these variable spring hangers were also designed to accommodate a travel of 1″, upward movement.
Are variable spring hangers a necessity for your next project? Get pricing now!
Big-Ton D and Big-Ton T Upthrust Constants
May 24, 2001
Big-Ton D and Big-Ton T Upthrust Constants
PT&P custom designed and built four Big Ton D Upthrust Constants(figure 1) and two pairs of Big Ton T Upthrust Constants (figure 2) for a global engineering & construction company.
These upthrust constants are installed at a Petrochemical Plant in Siberia. Due to space limitation, the Big Ton D Upthrust Constants and Big Ton T Upthrust Constants were designed for a total travel of 5″ and 4″ respectively. The Big Ton D Upthrust Constants were also designed for a load of 50,022 Ibs with a height of 26 inches. The Big Ton T Upthrust Constants with a height of 16.5″ were designed for 75,000 Ibs, and 67,464 Ibs respectively.
Does your project require constant springs? Request pricing today!
Emergency Field Service Request on Constant
May 22, 2001
Emergency Field Service Request on Constant
Piping Technology & Products, Inc. and its 24×7 Quick Turn/Emergency Service were put to the test on a Friday evening when they received an emergency call from a company located in Jamaica. The Jamaican company was concerned with existing pipe supports at their location and made a request for a PT&P field services representative to visit and inspect.
An experienced PT&P field services manager arrived at 8:00 p.m. on Saturday to survey and fulfill the request.
The reported problem was a pair of rusted and decayed spring hangers dating back to 1969. After inspection, PT&P’s field services manager concluded that the aged spring hangers could no longer support the piping system due to changes in the design of the system, whereas, failure resulted in additional forces being exerted onto the steam turbine.
Following identification of the measurements, load capabilities, and movements of the spring hangers, it was apparent that the system design did not compensate for the weight of two globe valves that were added to the system at a later date. Thus, PT&P’s field services manager had to take into consideration the weight of these two globe valves when sizing the replacement parts.
PT&P supplied and delivered two Type G variable spring assemblies to Jamaica on the following Monday. Type G assemblies can accommodate unusually heavy loads, and is especially adaptable for avoiding interference in spaces where headroom is limited. In this case, the spring assembly was supporting loads in excess of 2000 lbs. and movement was limited due to its location in the powerhouse.
Replacement of a Constant Spring Hanger
April 11, 2001
Replacement of a Constant Spring Hanger
A large refinery plant located in Pasadena, TX called upon Piping Technology & Products, Inc. to aid them in the immediate replacement of a 5400 Lbs, 7 1/2″ travel vertical constant spring hanger used to support a Coker drum.
The constant spring hanger was damaged during servicing. The reliability engineer from the refinery contacted PT&P Wednesday evening to request an inspection by a PT&P field services representative. The following morning PT&P’s field services representative arrived on-site, inspected the damaged constant spring hanger and suggested that a replacement would be most efficient and cost effective. With the existing nameplate bolted to the constant, PT&P was able to easily locate the original design of the constant.
The original design, along with the convenience of the component parts being in stock inventory, allowed PT&P to quickly manufacture a replica of the constant and ship it out on the same day by 6 p.m.
In the past, lead times for delivery of constant supports averaged 6-8 weeks, however, through the process of maintaining stock components of interchangeable parts, lead time has been drastically reduced. Piping Technology & Products, Inc. maintains a large inventory of stocked constant support assembly components that allows them to quickly assemble and ship to customers on demand, especially in emergency/quick-turn situations.
PT&P Aids in the Creation of a "Chemical Island" in Singapore
February 8, 2001
Piping Technology & Products, Inc. supplied a variety of pipeline products for the construction of a refinery plant on Jurong Island, Singapore. Jurong Island is a man-made island consisting of four petroleum refineries, 30 petrochemical firms, and many more industrial firms to support its existence.
PT&P Aids in the Creation of a "Chemical Island" in Singapore
PT&P and U.S. Bellows, Inc. first became involved in this extensive project in May 1998. During this time, PT&P supplied the international construction firm with more than 3,000 cold shoes, 400 slide plates and numerous more spring hangers, constants and fabricated pipe supports. U.S. Bellows, Inc., a wholly owned subsidiary of PT&P, also supplied many of the expansion joints used in the creation of this refinery. This includes three 36″ expansion joints were fabricated and sent to Singapore in October 1999. Two years, 300 jobs, and 670 tons of steel later, PT&P completed the last job for this project in September 2000.
PT&P Aids in the Creation of a "Chemical Island" in Singapore
PT&P has extensive experience performing product testing to ensure product quality and dependability. For this particular project a load test was performed on a 60″ diameter cold shoe. By measuring the axial and lateral loads, vertical tension and temperature, PT&P engineers are able to determine its maximum load.
Product testing was also performed on the three 36″ expansion joints provided. The bellows together with the hinge assembly were hydro-tested and a dry nitrogen test between the two plies was conducted to ensure that they would withstand the design pressure. These expansion joints were tested per ASME Sect. VIII Div. 1 Appendix 26 standards.
Specially Designed Spring Supports Ready for Shipment to Egypt
September 8, 2000
Specially Designed Spring Supports Ready for Shipment to Egypt
These supports are key components for the steam generators in a thermal power plant. The coils are coated with neoprene (black) to prevent corrosion while the steel plate and tie rods are painted white. Engineers of Piping Technology & Products, Inc. designed these units to support loads of 110,000 kips.
In need of specially designed pipe supports? Get pricing now!
RFID Tag for Pipe Supports
February 18, 2000
RFID Tag for Pipe SupportsRFID Handheld Reader
Piping Technology & Products, Inc., in conjunction with other sponsors, has completed the first pilot test of Radio Frequency Identification (RFID) technology for the receipt and tracking of pipe supports material at construction jobsites.
The RFID tags and RFID handheld reader used by Piping Technology & Products, Inc. at the Red Hills Power Plant.
PT&P Pipe Supports in the Field
The material shown here arrived from PT&P’s manufacturing facility in Houston, Texas with an RFID tag affixed to each pipe support assembly.
PT&P Providing Training to Field Personnel
Piping Technology & Products, Inc. shipped approximately 150 pipe supports to the Red Hills Power Plant with radio frequency identification (RFID) chips affixed to each pipe supports. The RFID tags and RFID handheld reader were provided by SAT Safetrac. Field personnel were trained on the use of the new technology. The RFID-tagged pipe support assemblies were then received by field personnel. Videos of the RFID receiving process were taken for the purpose of comparative time and motion studies.
In January 2000, Piping Technology & Products, Inc., a manufacturer of high quality engineered products, designed and built two 33 1/2 inches travel and two 25 inches travel constant load spring hangers. These constant load spring hangers will be in service at a geothermal production well in Hawaii, where they will be used to support a pipe that carries hot water discharged from a geothermal production well to a separator.
The well will produce 2.8 Million gallons of water per hour at a discharge temperature of 680° F, and a pressure of 2800 psi. These custom designed constant load spring hangers provide extraordinarily large travel distance. The 33 1/2″ travel and the 25″ travel constant load spring hangers are designed to provide a constant 16,000 lbs. and 6,000 lbs support for a pipe moving a vertical distance of 33 1/2″ and 25″ respectively.
Want to learn more about constant hangers? Visit our webinar archives today!
Replacing a Spring Coil With Stainless Steel Bellows
October 21, 1997
Spring coils are so pervasive in design of pipe supports that our collective paradigm limits our ability to consider alternatives. The photograph below shows an example of a pipe support designed for the special environment of an off-shore platform which uses a stainless steel metal bellows instead of a spring coil.
Stainless Steel Bellows Used as Spring Coil
This customer was concerned about the corrosive environment and the salt water which will occasionally flow over the pipe support. The rolled plate on the left will be welded to a structural pipe on the platform. A riser clamp (not shown) will be attached on the right. The stainless steel bellows was designed with the proper spring rate and movement.
In need of a spring coil? Let us price one for you today!
Testing Proves Spring Coils Will Function In a Hot Environment
August 15, 1996
An engineer with a major Houston E&C firm had concerns about the effect the temperatures in the furnace his company was designing would have on the coils in the spring supports used to support the tubing. PT&P engineers put the same question to the major suppliers of coils in the U.S.A. No one seemed to have the data to prove the coils would withstand the temperatures. The E&C firm included a requirement to test for relaxation of the coils with their purchase order to PT&P.
A random sample of coils of the size required was selected from PT&P’s inventory. The loads required to compress the coils through ten inches of travel were recorded and the coils were placed in a furnace at a controlled temperature of 176 degrees F for forty-eight hours. After the coils were cooled they were again compressed. No difference in the loads required was observed.
We did not expect any relaxation of the coils, but it was nice to have the experimental data to back our judgment.
Specially Designed 120,000 lb Load Big-Ton Spring Supports
June 8, 1994
Specially Designed 120,000 lb Load Big-Ton Spring Supports
Pictured above are Big-Ton Spring Supports specially designed by Piping Technology & Products, Inc. These types of supports are used in supporting large and heavy units such as compressors, vessels and pumps in power and petrochemical plants. The ones below were used to support vessels in excess of 120,000 pounds. The Big-Ton Spring Support are designed to allow limited movement in confined areas. By doing this, it saves the customer from having to entirely redesign the piping system and saves thousands of dollars.
Do you need a big ton for one of your upcoming projects. Let us price one for you today!
Specially Designed Upthrust Constants
March 8, 1994
Specially Designed Upthrust Constants
Piping Technology & Products, Inc. announces the latest design of their “Horizontal Upthrust” base type constant support. The table or load flange move straight up or down as the weight of the pipe is transferred to the helical coil (spring) via the internal camlinkage. PTFE, 25% glass filled, slide bearings on the four corners eliminate the possibility of binding if undue axial or lateral forces are exerted. Also, PTFE, 25% glass filled, or graphite slide bearings can be added to the table to ease movement along the axis of the pipe. The Big-Ton and Type F Base Constant Supports are still available for other applications.]
Are you in need of constant supports? Receive a quote within 48 hours!
Constant Effort Supports for Generating Facilities
Constant Effort Supports for Generating FacilitiesConstant Effort Supports in the Field
Piping Technology & Products, Inc. has designed and built thirty-two constant effort supports ranging in loads from eighty to eighty-seven kips with seven and one half inches of total travel on each.Six of the thirty-two are shown in position and they will support critical portions of the heater. The balance in other parts of the plant will support equally critical lines such as main steam and boiler reheat.
Located near Calvert, Texas, this is the second generating facility for Texas – New Mexico Power at this site. Piping Technology & Products, Inc. supplied the same material on the previous installation for this client.
Learn more about our constant supports, visit the webinar archive today!
Constants for a Radiant-tube Support System
January 8, 1994
Constants for a Radiant-tube Support System
The photograph above shows a large number of specially designed constant spring supports being prepared for shipment to Chile. These constants are the key component of a reforming furnace, radiant tube support system designed for one of the world’s major engineering and construction firms.
Piping Technology’s engineers designed these units to fit in the limited space available inside the furnace and provided optional bolting patterns so attachment to the supporting structure could be made even if the radiant tube support system assumed a competitor’s design.
Do you require constant spring supports in an upcoming project? Get pricing today!
Refurbished Constant Supports
December 3, 1993
Refurbished Constant Supports
The picture above shows the “before” and “after” of constant supports refurbished by Piping Technology & Products, Inc. Customers ship these units to our plant during a turn-around in a wide variety of conditions. In this case it was cheaper and faster to refurbish them than to rebuild. In either case each unit is completely tested in a load cell to assure performance and a new name plate is attached to record the load, travel and other parameters. Four of these horizontal upthrust supports can be seen above, ready for return to the customers. Power plants, petrochemical plants and paper mills are the primary users of this service.
Want to learn more about constant supports? Check out our live webinar archives!
45,000 lb. Load CAD Spring Support
November 25, 1993
45,000 lb. Load CAD Spring Support
The photograph above shows a CAD Spring Support to handle over 45,000 lb. Load with movement in excess of 4”. This is a PTP-8, size 22 Type F Spring Support utilizing four stacked hellcat coils with eliminates the possibility of binding or squirming, problems which baffled others attempting development of such a design. Travel stops hold the coils in compression to cold load, while hydrostatic test spots prevent the coils from “bottoming out” during line tests. The spring casing and baseplate, which eliminates the need to weld after galvanizing, are paramount to the success of this design.
Do you require a spring support for an upcoming project? Let us price one for you today!
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