Resources
These compact spring supports were custom-designed to support a heat exchanger at an oil refinery. They were designed to support loads up to 12,000 lb. and a movement of 0.039”, with space limitations of 3″ in height. These compact springs are fabricated from carbon steel and utilize engineered Belleville (disc spring) washers. 25% glass-filled (PTFE) slide plates are bonded to the top of the load flange and provide a low coefficient of friction.
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.
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.
PT&P has extensive experience involving the custom design and fabrication of hold-down pipe clamps for piping systems and skid mounted units for the power, chemical, and refineries industries throughout the world. These hold-downs are custom designed to limit vibration caused by rotating equipment and avoid damage to the surrounding piping system. They are fabricated from carbon steel with a hot-dipped galvanized coating and include PTFE slide plates to reduce the friction between the pipe and clamp, combined with fabric pads to reduce vibration dampening. The hold-downs are designed for pipelines ranging in 2” to 16” diameter. They range from 3″ wide x 9-1/8″ long to 8″ wide x 25-3/4″ long, and designed for an operating temperature of 200°F. We performed a Q.C. visual inspection prior to shipment. PT&P can custom design and fabricate hold-downs for any pipe size application. In addition to hold-downs, PT&P also offers other types of vibration control devices to accommodate different pipe orientations and locations.
| Type: | G-Type Variable Spring Support Assemblies |
| Design: | Operating Loads from 3000 lb. to 4000 lb. Movement of 1” |
| Material: | Carbon Steel |
| Testing: | Load & Travel Test | Q.C. Inspection |
Pictured here is a Type G variable spring hanger assembly designed for an operating load up to 4000 lb. and 1” movement. This type of support assembly is formed by welding two standard spring assemblies to the ends of a pair of channels. The Type G assembly is especially adaptable for avoiding interference in spaces where the headroom is limited. The assemblies are fabricated from carbon steel and underwent spring load tests before shipment.
| Type: | B-Type Constant Spring Supports |
| Size: | 11-5/8 W x 41” L x 19” H to 21” W x 88” L x 38” H |
| Material: | A36 Carbon Steel | Hot-dipped Galvanized |
| Design: | Operating Load Range: 3,170 lb. to 48,400 lb. Movement of 3” to 8” |
| Testing: | Q.C. Inspection | Load and Travel Tests |
PT&P manufactured B-type constant spring supports for LNG service in Louisiana. These constants are fabricated from A36 carbon steel with alloy steel 5160 spring coils. The constants are designed for an operating load range of 3,170 lb. to 48,400 lb., and movements from 3” to 8”. They range in size from 11-5/8 W x 41” L x 19” H to 21” W x 88” L x 38” H. To avoid delivery delay, a standard frame was paired with an oversized coil and coil housing. The lugs were rotated 90 degrees from the standard to allow the hanger to swing beyond +/- 4” of side-to-side swing. Standard load and travel tests were performed prior to shipment.
| Type: | Insulated Sliding Pipe Shoes |
| Size: | 78″ NPS | 12″ L x 90″ H x 85″ D |
| Material: | HDG Carbon Steel | High-Density Calcium Silicate |
| Design: | +/- 3″ Axial & +/- 1″ Lateral Movements Operating Loads up to 88,000 lb. 200°F Temperature Pipeline |
| Testing: | Q.C. Inspection | Visual & “Fit-Up” Tests |
PT&P custom designed insulated sliding pipe shoes for HVAC service at a semiconductor manufacturing facility. The shoes are fabricated from A36 carbon steel and hot-dipped galvanized for corrosion resistance, and include insulating material consisting of high-density calcium silicate. The insulated sliding shoes are designed for a 78″ pipe size with overall dimensions of 12” L x 90” H x 85” D to accommodate +/- 3″ axial and +/- 1 lateral movement at a pipeline temperature of 200°F. This design can accommodate operating loads of 88,000 lb. with each shoe weighing approximately 1,200 lb. Our quality control department performed visual and “fit-up” tests for this “Rush” shipment. *image shows product during assembly
| Type: | Pre-Insulated Pipe Supports “Hot Shoes” |
| Size: | 1″ to 3″ NPS | 1″ to 2″ Thick Insulation |
| Material: | HDG Carbon Steel | Calcium Silicate |
| Design: | Operating Temp.up to 1200°F Operating Loads up to 1000 lb. Movements of +/- 4-1/2″ |
| Testing: | Standard Q.C. Inspections |
Pipe Shields, Inc., a division of PT&P, custom-designed insulated pipe supports for high temperatures in a chemical plant. The “hot shoes” are fabricated from A36 carbon steel and include a hot-dipped galvanized finish. They range in nominal pipe size from 1” to 3” and include 1”-2” thick calcium silicate insulation. The supports are designed for an operating temperature up to 1200°F and operating loads up to 1000 lb, with +/- 4 -1/2 movement. Quality control inspections were performed before shipping to Indiana.
| Type: | F-Type Variable Spring Support Assemblies |
| Size: | Heights up to 12-3/4” Spring Casing Diameters from 6-5/8” to 8-5/8” Base plates from 9″x 9″ to 13-1/4” x 13-1/4″ |
| Design: | Operating Temp.: -49°F to 122°F Operating Loads from 697 lb. to 6093 lb. Movements of 0.04″ to 0.2” |
| Material: | Hot-dipped Galvanized Carbon Steel |
| Testing: | Load & Travel Test | Q.C. Inspection |
Piping Technology and Products, Inc. recently designed and manufactured F-Type variable spring supports with internal load columns for a petrochemical plant in Canada. The variables are fabricated from carbon steel that is able to accommodate low temperatures (A516-GR. 70N). The operating temperature ranges from -49°F to 122°F while supporting operating loads from 697 lb. to 6093 lb. and movements of 0.04″ to 0.2”. They are designed to accommodate installed heights up to 12-3/4”, with spring casing diameters from 6-5/8” to 8-5/8”, along with base plates from 9″x 9″ to 13-1/4” x 13-1/4″ for installing either by bolting or welding in the field. Load and travel tests, along with visual Q.C. inspections were performed before shipment.
While sometimes overlooked in the broad scope of equipment and engineering in an operating plant, Pipe Stress Engineering and knowledge of Expansion Joints and Spring Supports continues to be a sought after skill in industries dealing with high-temperature processes including Semiconductor, Oil and Gas, Chemical, and Power. PT&P’s customized virtual training options are offered free of charge and allow you and your team to develop these skills by having an understanding of the fundamentals of Pipe Stress Engineering and how the components used to manage Pipe Stress are designed, inspected, and maintained.
Piping Technology & Products would like to make sure we stay connected with key customers during this challenging time and find ways to continue supporting your business. While promoting social distancing measures to protect our employees and communities, we are offering online Zoom technical training sessions designed to benefit Engineers, Maintenance Planning, Reliability, Turnaround Planning, Vibration Inspection, and Operators/Technicians. The sessions count as PDH credit, and we offer training on a variety of topics, including the following:
Basics of Pipe Stress — Thermal expansion and methods of managing stress from thermal expansion
Spring Supports — Design of Spring Supports, Hot and Cold Settings, Appropriate use of travel stops
Dynamic Restraints — Applications of Sway Braces/Struts and design of Hydraulic and Mechanical Snubbers
Static Restraints — Types of Materials used for pre-insulated supports for insulation
Friction Solutions — Material selection for Slide Plates
Vibration Solutions — Solutions to reduce vibrations and noise, lowering maintenance costs
Contact Corrosion Solutions — Cost-effective corrosion management solutions
Expansion Joints — Overview of managing pressure thrust and squirming, types of movements, and movements supported by different types of expansion joints including Single, Universal, Hinged, Gimbal, Slip, and Fabric. Also includes an overview of the parts of the expansion joint and their purpose.
Please let us know what topic or combination of topics would be most useful to you and your team, and we would be happy to customize a training session for you. Would you be interested in participating? When would be a good time to set up a session?
We hope that you will find some value in this training opportunity and the other online resources we offer on our website (pipingtech.com), such as our webinars (pipingtech.com/webinars & usbellows.com/webinars). We are also available to provide assistance on any specific technical questions you might have if you would like to discuss ongoing projects or current issues you are facing.
Please let us know how we can be of assistance, and we hope you stay safe and have a wonderful day.
| 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.
| Type: | Duct Work Transition Pieces |
| Size: | 10” NPS | 15″ Length | 13-1/2″ SQ Flange End |
| Material: | Carbon Steel | 3-Coat Paint System |
| Test: | QC Inspections | 100% Dye-Penetrant Exam |
Sweco Fab., a division of PT&P custom designed multiple duct work transition pieces for polyethylene dust at a chemical plant in Louisiana. The units are fabricated from carbon steel and include a 3- coat paint system on the outside, with a light grey finish. The dimensions are 15” length, 13-1/2” SQ flange end, and 10” NPS at the other end. Transition pieces are normally used to join duct work of dissimilar cross-sections and sizes. Media passing through the transition piece can be air, liquid, gasses, dust, dirt, chemicals, etc. Prior to shipment, each of the units underwent quality control inspections including 100% dye-penetrant examination.
| Type: | Pre-Insulated Pipe Supports | Cold-Temperature |
| Size: | 1/2″ -3″ Pipe Sizes | 4″ Thick Insulation |
| Material: | Polyurethane Insulation | HDG CS Jackets |
| Testing: | Q.C. Inspection & Tests |
Pipe Shields, a division of PT&P, custom-designed multiple A6000U series insulated supports for a chemical plant in Texas for cold temperature piping. The cold pre-insulated shoes are fabricated from carbon steel with galvanized jackets, polyurethane foam insulation (PUF) and a vapor barrier. They are designed for pipe sizes ranging from 1/2” to 3” with insulation up to 4” thick. Standard quality control tests were performed prior to shipment. Learn more about our pre-insulated supports and place your order with us today!
| Type: | Custom Sway Braces with Ball Joints |
| Material: | A36 Carbon Steel | Hot-dipped Galvanized |
| Testing: | Standard Load Testing & Q.C. Inspection |
PT&P custom-designed sway braces on an urgent basis to replace existing sway braces at an oil refinery in the Virgin Islands. These sway braces will be used in coker units that have long displacements. They are fabricated with ball joints at both ends due to the “banana effect”. The casing, pipe, coils, threaded rods, turnbuckle, ball joints, etc. are all fabricated from carbon steel with a hot-dipped galvanized finish.
The maximum loads, spring rates and movements for the sway braces are as follows:
| Max Load (lb) | Spring Rate (lb/in) | Max Movement (+ / – in) |
| 2475 | 90 | 10″ |
| 3800 | 267 | 3-3/4″ |
| 3480 | 120 | 9″ |
| 2500 | 200 | 2″ |
Learn more about our sway brace products and place an order with us today!
| Type: | Pre-Insulated Sliding Pipe Shoe | High-Temperatures |
| Size: | 15″ Long | 4″ B.O.P. | 1-1/2″ – 3″ Dia. |
| Material: | Firetemp® Insulation | HDG CS | SS on Polyethylene |
| Testing: | Q.C. Inspection & Tests |
PT&P custom designed pre-insulated sliding pipe shoes with FRP lining for high-temperature pipelines in Ohio. The “hot shoes” are 15” long, range in diameter from 1-1/2” to 3” and are designed for a B.O.P. of 4”. The shoes are designed with Firetemp® insulation for temperatures up to 1800°F. The supports are fabricated from carbon steel with a hot-dipped galvanized finish and include stainless on polyethylene slide plates. A visual inspection was performed prior to shipping.
| Type: | FRP Wear Pads |
| Size: | 2″ – 4″ Dia. | 6″ – 12″ Long | 1/2″ Thick |
| Material: | Vinyl Resins |
| Testing: | Standard Visual and Dimensional Tests |
PT&P fabricated 160 FRP wear pads for an LNG facility in the Caribbean. The wear pads are for pipes ranging from 2” to 4” in diameter 6” to 12” long and 1/2” thick. They are fabricated from vinyl resins and are designed for operating temperatures up to 400°F. The FRP pads are secured to the pipe using an epoxy adhesive to protect the uninsulated pipe from the support structure. Standard visual and dimensional tests were performed prior to shipment.
** 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.
** 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.
** 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.
** 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.
