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Big Tons — The Pipe Supports Blog

Custom Designed Big Ton Spring Supports for a Propane Dehydrogenation Application in Texas

November 20th, 2017 Comments off

Custom Designed Big Ton Spring Supports for a Propane Dehydrogenation Application in Texas

Type: Big Ton Spring Supports
Size: 42″ x 24″ x 26 1/2″
Material: Carbon Steel
Design: 94,261 lb. Load & 0.085” Movement
Testing: Standard Load Tests

PT&P custom designed big ton spring supports for a propane dehydrogenation application at a chemical plant in Texas. The components within this assembly include the spring housing, coils, name plates, pressure plate, and load indicator. While both assemblies measure 42” L x 24” W x 26-1/2” H, it was modified based on independent specifications for operating loads and movement to accommodate a load of 94,261 lb. and 0.085” of movement. This type of support is ideal for applications, such as supporting pressure vessels that combine very heavy loads with thermal expansion because of the stability they provide. The big ton was tested in the load cell to insure proper operation throughout the entire working range of the coils.

Big Ton Spring Supports Designed for a 98,250 lb. Load

July 24th, 2017 Comments off

Big Ton Spring Supports Designed for a 98,250 lb. Load

Type: Big Ton Spring Supports
Size: 29″ wide x 110″ long x 35″ high
Material: HDG Carbon Steel | A193 Gr. B7 Travel Stops and Load Column
Design: 98,250 lb. | 1-3/4″ Upward
Testing: Load Cell Test

This big ton spring support assembly was designed for a facility in Kansas. The assemblies are fabricated from hot-dipped galvanized carbon steel and include neoprene coated springs coils. The travel stops and load column material is A193 Gr. B7. The units measure 29″ wide x 110″ long x 35″ high and are capable of supporting loads up to 98,250 lb. while accommodating movements from 1-3/4″ upward. The big tons were tested with a load cell to insure proper operation throughout the big ton’s operating range.

Big Ton Spring Supports Designed for a Liquid Natural Gas Facility in Australia

February 7th, 2017 Comments off

Big Ton Spring Supports Designed for a Liquid Natural Gas Facility in Australia

Type: Big Ton Spring Supports
Size: 19-5/8″ x 19-5/8″ x 15″
Material: Hot-dipped Galvanized Carbon Steel | A193 Gr. B7
Design: Movements: 3/16 ” – 1/4″ | 16,619 lb. Load
Testing: Load Cell throughout Operating Range

These big ton spring supports were designed for a liquid natural gas (LNG) plant in Australia. They were selected because the application required supporting heavy loads as the supported equipment undergoes thermal expansion during operation. The assemblies are fabricated from hot-dipped galvanized carbon steel. The travel stop rods and nuts material is A193 Gr. B7. The units measure 19-5/8″ x 19-5/8″ x 15″ and are capable of supporting loads up to 13,619 lb. while accommodating movements from 3/16″ to 1/4″. The big tons were tested with a load cell to insure proper operation throughout the big ton’s operating range.

Big Ton Spring Supports Custom Designed for an LNG Facility

September 13th, 2016 Comments off

Big Ton Spring Supports Custom Designed for an LNG Facility

Type: Big Ton Spring Supports with PTFE Slide Plates
Size: 29-7/8″ x 29-7/8″ 16-1/2″
Material: Carbon Steel with HDG Finish | PTFE, 25% Glass Filled Slide Plate
Testing: Tested in a press connected to the load cell

PT&P custom designed big ton spring supports with PTFE slide plates for an LNG facility in Australia. The components within the spring housing include load columns, travel stops, spring coils and lifting lugs. Each assembly is designed for an operating load ranging from 16,276 lb. to 34,479 lb. and will allow for movement between 0.16″ and 0.24″. They are fabricated from hot-dipped galvanized carbon steel and measure 29-7/8″ x 29-7/8″ x 16-1/2″. The big ton spring support is ideal for applications that have very heavy loads with thermal expansion because of the stability they provide throughout the range of travel. These supports were tested in the press connected to a load cell to insure proper operation throughout the entire working range of the coils.

Big Ton Spring Supports Designed for an LNG Facility in Australia

February 8th, 2016 Comments off

Big Ton Spring Supports Designed for an LNG Facility in Australia

These big ton variable spring assemblies were custom designed for an LNG plant in Western Australia. They are specially designed with PTFE, 25% glass filled slide plates, and will be used under horizontal pressure vessel saddle supports. The big tons were selected due to a combination of heavy loads and thermal expansion. The units measure 30″ x 30″ and are capable of supporting a load up to 95,000 lb. with down travel of 2 to 5mm vertical.

Big Tons with W-Beams as Stilts

September 17th, 2012 Comments off

Stilts using W-Beams were added to these big ton variable assemblies in order to meet height requirements for an oil refinery in Port Arthur, TX. Entirely fabricated with carbon steel, these big tons measure 50 1/2″ – 70″ L x 18″ – 22″ W by 37″ H and are capable of supporting loads up to 113,734 lb with an upward travel range of .076″ – .816″. Permanent travel stops were later installed in order to prevent any chances of downward shift.

Big Ton Springs used in a Chemical Processing Plant

November 1st, 2006 No comments
Big Ton Springs used in a Chemical Processing Plant

Big Ton Springs used in a Chemical Processing Plant

Big Ton Springs used in a Chemical Processing Plant

Stainless Steel Slideplates on Big Tons

The limiting constraint in designing and fabricating these big ton spring supports was to maintain an overall height less than 15-3/4″ and still allow the load table to travel downward during operation. Whereas a standard PT&P size 2-190 variable springs would have been sufficient to hold the load specified, the coil alone was taller than the space available at site. For this reason, a “big ton” design was implemented which utilized six smaller coils (2-130 size) working in parallel to produce the required load-carrying capability and spring rate.

All of the frame/housing components were made from carbon steel and supplied with an HDG finish. The travel stop rods were made of A-193 Gr. B7 material and were painted red. The slide plates sitting atop the load flange were made of polished A-304 stainless steel.

Both “big ton” assemblies are 30″ wide by 30″ deep by 15-3/4″ tall. Overall spring rate is 3,600 lb/in. and each weighed approximately 1,460 pounds. The installed (cold) load = 14,800 lbs. and the operating (hot) load = 16,075 lbs. Movement from cold to hot = 0.354″ down.

Tested in the load cell to insure proper operation throughout the entire working range of the coils, the “big tons” were then set to the cold (installed) load as specified.

Want to learn more about big ton springs? Watch one of our engineered spring webinars now!




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90,000 lb. Load Big Ton Springs for a Chemical Plant

April 9th, 2004 No comments

90,000 lb. Load Big Ton Springs for a Chemical Plant

90,000 lb. Load Big Ton Springs for a Chemical Plant

90,000 lb. Load Big Ton Springs for a Chemical Plant

Name Plate Indicates Hot/Cold Loads

Piping Technology and Products, Inc. manufactured four 13,500 lb. Big Tons Springs for a chemical plant in Texas. These PTP-500 Big Ton Springs have a load capacity of 60,000 to 90,000 lb. are fabricated from A-36 carbon steel. They are designed for 750°F and a downward travel range of 3/16″ to 1/4″. These 37″ x 31″ x 30″ Big Tons will be used to support certain critical equipment with thermal expansion at the chemical plant. To assure quality, load testing was performed on the big tons prior to shipping.

Do you require big ton springs in your current or future job? Get pricing today!
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Big Ton Springs Equipped with Special Rollers

August 23rd, 2002 No comments
Big Ton Springs Equipped with Special Rollers

Big Ton Springs Equipped with Special Rollers

Big Ton Springs Equipped with Special Rollers

Rollers Installed On top of the Load Flanges

Piping Technology & Products, Inc. specially designed and fabricated big ton springs equipped with special rollers to accommodate moving apparatus and support piping at a refinery in India.

The specially designed big tons were made to support loads ranging from 55,000 lbs. to 114,000 lbs with no more than 5/16″ upward movement. Its composition comprises of A-36 carbon steel, built to a maximum height of 23-5/8″.

The special rollers installed on the top of the load flange, keeps the aforementioned loads moving smoothly under all kinds of conditions. To further assure their quality, each of the big ton spring assemblies underwent load testing and afterward were hot dipped galvanized to prevent against corrosion.

Want to learn more about big tons? Visit our webinar archives today!



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Big Ton Springs Equipped with Lifting Lugs

July 12th, 2002 No comments
Big Ton Springs Equipped with Lifting Lugs

Big Ton Springs Equipped with Lifting Lugs

Piping Technology & Products, Inc. specially designed and fabricated big ton springs equipped with side lifting lugs to support piping of a 102-megawatt, refinery cogeneration power plant in California.

Under typical circumstances, this type of job application would utilize variable spring hangers, but because of the restricted space, the hangers’ size would be too small to support a hot load of 19,068 lbs and cold load of 17,212 lbs. In order to satisfy both the required loads and space, PT&P engineers designed and fabricated figure 500 big ton springs equipped with side lifting lugs. The lifting lugs were attached to allow the big ton to suspend as a variable spring would in the field.

Are big ton springs a necessity for your next project! Request a quote today!

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