These Fig. 46 adjustable pipe saddle supports are designed for pipe sizes 12” to 14” diameter for an oil refinery. They are fabricated from carbon steel and are capable of supporting up to a 4,920 lb. load. A total of twelve supports were fabricated, quality inspected and tested prior to shipment.
PT&P custom designed C-type constant spring supports for an oil refinery in the Virgin Islands. They are fabricated entirely from 304 stainless steel to support piping in a highly corrosive environment. The design loads are 7,000 lb., 9,500 lb., and 11,000 lb. with movements of 2-1/2″ and 3″. The constants measure 29″ L x 22″ W x 20″ H. Standard load and travel testing was conducted prior to shipment.
View the recording at: Webinars
This webinar series was created to explain the basic principles of different types of pipe supports in the simplest way possible. It is geared towards “non-engineers” who want to have a better understanding of pipe supports. This particular presentation will give you a brief introduction to pipe supports and will then solely concentrate on constant and variable spring supports. It will explain the various designs, applications, and details of each support using simple terms and a lot of visual aids. The presentation will conclude with general guidelines of the maintenance and ordering process of constants and variables.
These slide plate assemblies are comprised of 3/32″ thick PTFE, 25% glass filled slide plates bonded to 1/4″ thick hot dipped galvanized carbon steel backing plates. They measure 139″ long by 11-1/2″ wide, and were designed for a pressure of 2000 psi at -320°F to 500°F. PTFE, 25% glass filled material provides a low coefficient of friction, is easy to install, does not require surface treatments, or grouting, and is unaffected by weather conditions. These type of slide plates are typically installed on top of a concrete pillar under a large vessel.
Piping Technology and Products supplied these cryogenic and axial stop cold shoes for an LNG facility in Australia. A total of 28 assemblies were fabricated with carbon steel, stainless steel and Micarta® G-10 insulation blocks. They were a wide range of lengths from 24″ to 36″, widths from 6 3/4″ to 30″ and heights from 9″ to 10 1/4″. The pipe shoes will support pipes ranging in diameter from 6″ to 48″ NPS in cryogenic temperatures as low as -162°C. A special paint system was used for the carbon steel components to resist rust. PMI testing was performed on the stainless parts prior to shipping.
Over 40 constant spring supports were custom designed to support production pipes in an oil refinery. This picture shows a Fig. 200 U-Type constant spring support.
This picture shows a Fig. 100 B-Type constant spring support.
The constants range in size from 22″ to 30″ in height, 35″ to 85″ in length, and 12″ to 31″ in width. Their load capacities range from 1,800 lb. to 20,800 lb. with a vertical movement ranging from 7″ to 11-1/2″. All constants were fabricated from A-36 carbon steel and painted with a 3-coat paint system. Each constant went through standard load and travel testing per MSS Standards prior to shipment.
These variable spring hangers were designed for a 10″ pipe line in a solar electric generating system. All assemblies were fabricated from A-36 carbon steel with a hot-dipped galvanize finish. The picture on the left shows a structural steel assembly supporting a PTP-1 variable spring and a Fig.80 heavy 3-bolt clamp designed for a 3,789 lb. load. The picture on the right shows two PTP-2 variable spring hangers welded to a structural steel beam designed for a 675 lb. load. Each pipe hanger assembly went through standard load and travel testing prior to shipping.
These 200 E-Type horizontal constant spring supports are fabricated from A-36 carbon steel with a hot-dipped galvanize finish. The pins made for constants operation are A-322-4140 high strength carbon steel. The constants range in size from 22-3/4″ to 26-1/4″ heights, 60″ to 90″ lengths, 18″ width, and 19-1/2″ to 23-1/2″ in coil housing diameters. They are designed for 23,160 lb. to 33,700 lb. loads and 6-1/2″ to 14″ of total travel. A total of sixteen assemblies were custom designed for a fired heater radiant manifold. Each pipe hanger assembly went through standard load and travel testing prior to shipping.
Five total assemblies of custom designed variable spring supports were made for an oil refinery in the United Arab Emirates. These springs required a permanent upward travel stop. The spring cans were supplied with PTFE and polished stainless steel slide plates attached to carbon steel load flange. All materials used were domestic (from the U.S.). The springs were tested for lateral loads. The spring coils were stress tested and can withstand temperatures of 176°F (80°C), with a downward movement of 30mm – 45mm.
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.
Thirty-six custom designed pipe saddles were created for a power plant in Mississippi. These 20″ W x 72″ L x 30″ H saddles were made with carbon steel with PTFE slide plates. These pipe saddles were designed to support a load of 55,000 lb. and will be applied to fluid bed duct supports.
We provided a quantity of 274 custom designed hot shoes on an expedited basis to a factory in Arizona. While the normal delivery time on a typical order might be 6-8 weeks, Piping Technology provided these pipe shoes on a 3 week delivery time. The high temperature pipe supports include clamping material fabricated from carbon steel with a red oxide finish, a polyethylene slide base with stainless steel slide plates, high density calcium silicate insulation and an overlapping galvanized sheet metal jacket. The pipe shoes are designed to accommodate 4″-8″ pipes and have an insulation thickness of 2″-3″ and the base measures 11″ to 14″ in width, and 6″ to 15″ in length. The hot shoes are designed for temperatures ranging from 40° F to 600° F. The insulation for these supports is a combination of high density calcium silicate with high strength inserts.
These 26′-9″ long custom designed sway struts with ball joints were supplied for a power generating facility. There were 4 total assemblies that included 4″ diameter schedule 80 pipe with one ball joint and one extension piece on each end measuring 3″ in diameter and 6″ long. The sway struts, designed to support a load of 29,000 lb., will be used in the facility to allow movement between two structures along a parallel plane.
Designed for 20″ to 30″ pipe sizes, these HD-2 and HD-3 hold-down pipe clamps were shipped to a gas pump station in South Dakota. The hold downs were fabricated from carbon steel with PTFE, 25% glass filled liners on the saddle portion and base of the pipe clamp. We fabricated a total of 22 hold down pipe clamps and shipped this rush job within one week.
These F-Type variable spring cans were designed with PTFE, 25% glass filled slide plates for a local oil refinery. Slide plates are used to reduce the friction between the load flange of the spring and the pipe support. This allows for easier adjustment of the spring’s installed height. These variables include external travel stops. The external travel stops are sometimes referred to as universal travel stops and can be utilized to adjust the installed load (also called the cold load) to other installed loads within the working range of the spring. 113 variable springs were supplied for this job. The variables have an installed load ranging from 95 lb. to 11,000 lb. and an operating load ranging from 90 lb. to 10,703 lb. They are part of a plant expansion and will be used to support horizontal piping in an oil refinery.
These are custom designed big ton variable spring assemblies manufactured for a chemical plant in Brazil. They are fabricated from A-36 carbon steel, with monel rods, nuts and hardware. They measure 18″ L x 26″ H x 26-1/2″ W and are capable of supporting loads up to 60,000 lb. with down travel of .52″. These big tons employ the use of rollers for adequate mobility and are painted to protect against corrosion.
Sweco Fab., a division of PT&P, fabricated a water treatment vessel from 3/8″ thick SA516 Grade 70 carbon steel for a refining facility in Texas. This pressure vessel has an 84″ outside diameter, is 11′ tangent to tangent and has an overall height of 14′-8″. It is designed for maximum working pressure of 100 psig at 100°F. A radiography test and hydrotest at 130 psig, held for 1 hour was conducted prior to shipment.
We have added a new Pipe Support Hardware Guide to our Installation and Maintenance section. This guide covers pipe support hardware such as Welded Structural Attachments, Threaded Assembly Components, Clamp Attachments, and more. You can find our corresponding figure numbers, diagrams, and a brief description in each section of the guide.