Blog

54" Dia. Pre-Insulated Pipe Shoes Custom Designed for a Pipeline in Texas
May 14, 2024

54" Dia. Pre-Insulated Pipe Shoes Custom Designed for a Pipeline in Texas

Pipe Shields/PT&P designed and manufactured pre-insulated pipe shoes for a 54″ diameter pipeline in a propane dehydrogenation unit within a chemical processing plant in Texas. The hot shoes are custom-designed with a wide base along with slide plates to accommodate lateral movement and axial movements of +/- 4 1/2″. We designed the hot shoes to include additional bolting along with bolting torque recommendations in order to help prevent slippage of the pipe inside the pipe shoe. We designed the supports to accommodate vertical loads up to 22,200 lb. and temperatures up to 1800°F. The outer part of the shoe was manufactured of hot-dipped galvanized carbon steel while the inner insulation material is 4″ thick high-density calcium silicate insulation.

Here’s a breakdown of their key purposes:

  1. Load Bearing and Movement: Insulated pipe supports are designed to carry the weight of the pipe while also accommodating necessary movement. This is important to prevent stress on the piping system and ensure its longevity.
  2. Insulation: In areas where regular pipe insulation cannot be installed, such as at support points, high density insulated pipe supports can both support the vertical load while providing a layer of insulation. This helps to maintain the temperature of the fluid flowing through the pipes and minimizes heat loss.
  3. Cost Efficiency: By reducing heat loss and minimizing the need for additional insulation materials, insulated pipe supports can help minimize the overall cost of field installation. Additionally, their pre-assembled nature saves installation time, further contributing to cost efficiency.
  4. Non-Welded Design: Unlike traditional supports that may require welding to attach to the pipe, insulated pipe supports are not welded. This simplifies installation and reduces the risk of damage to the pipe or insulation during the installation process.
  5. Shipment as Fully Assembled Units: Insulated pipe supports are typically shipped as fully assembled units, except for certain types like riser supports and anchor supports, which may require some welding during installation. This pre-assembly reduces the need for on-site assembly and ensures consistency in quality across installations.

Overall, insulated pipe supports offer a comprehensive solution for maintaining thermal efficiency, structural integrity, and cost-effectiveness in piping systems.

PT&P REF. ORIGINAL POST 02242015

Read More

Variable Spring Hangers for an Upstream and Valve Project in Thailand
April 30, 2024

Variable Spring Hangers Designed for an Upstream and Valve Project in Thailand

PT&P designed and manufactured these variable spring hanger assemblies for a Flue Gas Cooler and SCR system in Thailand. The SCR system utilizes urea to reduce NOx levels. These variable spring hanger assemblies incorporate the use of three-bolt pipe clamps (fitted with metric bolting for this overseas order) ranging in sizes from 6″ to 12″ diameter with elevation differences ranging from 68-½” to 138-1⁄2″ from the pipe rack structure steel member to the center of the pipe. The B-Type spring hanger assembly uses coil springs to support the load and allow for vertical movement. They are furnished with one lug welded to the top of the spring’s transition plate. The transition plate can be designed for different connection arrangements utilizing 2 lugs or a threaded connection. All forty-seven variable spring supports were quality-checked with a 100% spring coil deflection test utilizing a load cell to also set the assemblies at the prescribed installed load. These spring hanger assemblies were packaged for export shipment at our facility.

Variable supports are typically used for the following considerations in piping systems:

  • Compensating for Thermal Expansion
  • Maintaining Stress and Load
  • Installation in Piping Systems
  • Maintenance
  • Supporting Heavy Loads

Variable spring cans play a crucial role in maintaining the integrity and stability of piping systems by compensating for thermal expansion or contraction, supporting heavy loads, and allowing for vertical movement. They are essential components in industries such as petrochemical, power generation, semiconductor, refining, paper and pulp processing, and other applications where large-scale piping systems are employed.

Variable spring cans come in a variety of designs and are constructed using different materials to suit specific applications and environmental conditions. Materials commonly used for variable spring cans include carbon steel, stainless steel, and special alloys. The selection of materials is crucial to ensure that the device can withstand the corrosive effects of certain fluids or harsh environmental conditions.

Variable spring supports, along with our array of engineered support solutions, stand as a fundamental pillar of our business. They enable us to actively collaborate with our clients, whether it involves the products we’ve manufactured, systems subjected to pipe stress and Finite Element Analysis (FEA), or items serviced through the expertise of our field service team.

PT&P REF. ORIGINAL POST 02232016

Read More

Sway Braces Designed for a Mechanical Equipment Supplier
April 23, 2024

Sway Braces Custom Designed for a Mechanical Equipment Supplier

Type: Fig. 555 Sway Braces
Size: 34-7/8” to 42-1/4″
Material: A36 carbon steel | Hot-dipped Galvanized
Design: 17,827 lb. Ld. | 12″ Travel | 7,200 lb. Spring Rate

PT&P custom designed Fig. 555 sway braces for the mechanical equipment supplier in Canada sound robust and tailored to specific requirements. Here’s a breakdown of the specifications:

  • Material: Carbon steel, hot-dipped galvanized. This ensures corrosion resistance and durability, especially important for industrial applications where the environment can be harsh.
  • Length Range: The sway braces vary in length from 34-7/8″ to 42-1/4″. This indicates flexibility in design to accommodate different distances between anchor points or points of attachment.
  • Operating Load Range: Largest Sway Brace: Designed for an operating load of 17,827 lb. This suggests it’s meant for heavier-duty applications where substantial loads need to be supported.
  • Smallest Sway Brace: Designed for an operating load of 200 lb. This indicates versatility in design, catering to lighter loads as well.
  • Design Travel: Largest Sway Brace: Designed with a design travel of 12″ in either compression or extension. This accounts for significant movement allowance, essential for accommodating thermal expansion or contraction in the piping system.
  • Smallest Sway Brace: Designed with a design travel of 9″ in either compression or extension. Though smaller, it still allows for adequate movement within the system.
  • Spring Rate: Largest Sway Brace: With a spring rate of 7,200 lb. per inch, it demonstrates a higher stiffness, suitable for handling heavier loads while still providing the necessary flexibility.
  • Smallest Sway Brace: With a spring rate of 1,800 lb. per inch, it offers a lower stiffness, ensuring smoother movement and accommodation of lighter loads.

These specifications indicate a thoughtful design process, considering factors such as load capacity, movement requirements, and environmental conditions. It’s a testament to PT&P’s expertise in providing tailored solutions for piping system needs.

It makes perfect sense that these sway braces require custom design and fabrication from PT&P due to their unique specifications exceeding standard parameters. By configuring each sway brace with a tailored combination of materials, spring coils, housings, and internal components, PT&P ensured that they could effectively handle the non-standard loads and movements specified for the project.

Customization is crucial in engineering projects, especially when dealing with varying environmental conditions, load requirements, and system configurations. By creating bespoke solutions, PT&P demonstrates their commitment to meeting the precise needs of their clients, ensuring optimal performance and reliability in the field.

This level of customization also highlights PT&P’s expertise and flexibility in adapting their products to meet specific project requirements, further solidifying our reputation as a trusted provider of engineered pipe support solutions.

PT&P REF. ORIGINAL POST 05152018

Read More

Constant Spring Support Assemblies Designed for a Chemical Plant in New Jersey
April 16, 2024

Constant Spring Support Assemblies Designed for a Chemical Plant in New Jersey

Type: Constant Spring Supports
Size: PTP 200 C-Type Double Suspension
Material: Hot-dipped Galvanized Carbon Steel | Epoxy Coated Springs
Load: 8,000 lb. – 19,000 lb. | Upward Movement: 6″ – 9″
Testing: Standard Load and Travel Test

PT&P designed twelve constant spring support assemblies for a chemical plant in New Jersey. The assemblies will be used as replacements in a recuperator "up-leg" and "down-leg" application in conjunction with custom cross-over supports previously fabricated by PT&P. Physical sizes of these constant assemblies range from 18-1/2" x 22" x 64" to 18-1/2" x 26" x 83". Operating loads range between 8,000 lb. – 19,000 lb. and each allows for upward movement between 6" – 9". The spring coils are coated with epoxy instead of the standard neoprene coating. Standard load and travel tests were completed prior to shipment.

Constant spring supports find applications in various fields and can be made from diverse materials tailored to specific end applications. These supports are integral in industries such as petrochemicals, LNG, refining, power generation, steel mills, and geothermal plants, among others. In the past, obtaining a custom-designed constant spring support posed a significant challenge in terms of both design and manufacturing, with lead times extending to a minimum of 6-8 weeks.

Through a dedicated focus on manufacturing optimization and employing a design-centric engineering approach, we have successfully reduced the required manufacturing time by more than half. Now, the process of acquiring custom constant spring supports is significantly streamlined. In fact, we are capable of fulfilling emergency orders in less than 24 hours, taking into account the client’s location and urgent requirements.

PT&P REF. ORIGINAL POST 01232017

Read More

14” Diameter Pipe Shoe Assemblies for a Refining Project in Saudi Arabia
April 2, 2024

14” Diameter Pipe Clamp Assemblies Designed and Manufactured by PT&P for a Refining Project in Saudi Arabia

Piping Technologies & Products fabricated these special designed Split-T pipe shoes using a Figure 50 “two-bolt pipe clamp” with added gusset plates welded beneath the clamps for a refining project in Saudi Arabia. The gusset plates are added to increase the vertical load-carrying capacity. The pipe shoes are 4″ height x 15.5″ wide x 18″ long and were fabricated from A36 carbon steel with a hot-dipped galvanized finish. They are designed for a pipe size of 14″ with an operating temperature from -29°C to 316°C. The pipe shoes are capable of supporting an operating load of 34,000 lb.

 

We provide such products in a “clamp-on-shoe” configuration to meet the needs of client applications where welding the pipe shoe onto the process line is prohibited. Depending on the client’s specifications, we can design and manufacture these shoes without a finish (black) or various painted finishes in place of hot-dipped galvanizing to expedite the delivery of the order. We can manufacture these clamp-on-pipe shoes with different metallurgies, such as 304 or 316 stainless steel, to accommodate high temperatures or cryogenic applications depending on the project’s needs. This basic pipe support is used in industries ranging from automotive, petrochemical, LNG, and refining in almost every major processing unit to maintain pipe elevations and handle loads imposed by media movement.

PT&P REF. ORIGINAL POST 07112016

Read More

Cryogenic Supports with Micarta® Insulation for a LNG Facility in Australia
March 26, 2024

Cryogenic Supports with Micarta® Insulation for a LNG Facility in Australia

Type:  Insulated Pipe Supports “Cold Shoes”
Material:  CS | 304L SS | Micarta® Insulation
Size Ranges:  12-18″ L | 6-15″ W | 6-40″ H | 8-24″ Dia.
Design:  -320°F | Testing: PMI | Q.C. | MTR’s Provided

PT&P custom designed insulated supports for a cryogenic pipeline at an LNG facility in Australia. They are fabricated with 304L stainless steel plates and Micarta® G-10 insulation. Micarta® is designed to prevent LNG temperatures of -320°F from transferring to the base and surrounding pipe rack steel. The base plates are fabricated from carbon steel. These pipe saddles are designed to support pipes with dimensions ranging from 12″-18″ in length, 6″-15″ in width and 6″-40″ in height. The nominal pipe size range is 8″-24″ diameter. MTR’s were provided and non-destructive testing (PMI) was performed, along with standard Q.C. inspection prior to shipment.

As a key partner for many LNG projects globally, a number of our designs and products have been installed in various parts of the LNG facilities. They include:

  • Bird Screen
  • Constant Assemblies
  • FEA/Engineering Services
  • Expansion Joints Metal Bellows
  • Fabricated pipe shoes, guides, anchors
  • Field Services
  • Flanges, Strainers, paddle blinds, bleed rings
  • Hold-down clamps
  • Misc. Steel fabrication
  • Orifice plates
  • Pipe Hanger Hardware
  • Restriction orifice plates
  • Slide bearing plates
  • Snubbers/Sway braces/Sway struts
  • Spray Nozzles
  • Varibales Assemblies
  • Wear Pads
  • Troughs and Shrouds
  • Instrument spports
  • Portable Hinges/Manways

The current LNG production climate has had significant growth driven by increasing global demand for cleaner energy sources. Major LNG-producing countries, such as the United States, Australia, and Qatar, continue to invest in expanding their liquefaction capacity to meet this rising demand. Advancements in technology and innovation improve the efficiency and cost-effectiveness of LNG production. We have been a part of these efforts because of our breadth and depth of experience in LNG. Most recently we completed design, manufacture, and delivery of over 200 LNG troughs over 40 feet long to meet the newly established FERC requirements around spillage.

PT&P REF. ORIGINAL POST 08202018

Read More

Constant Spring Supports for an Oil Refinery in Texas
March 19, 2024

Custom Designed U-Type Constant Spring Supports for an Oil Refinery in Texas

Type: Constant Spring Supports
Material: Carbon Steel w/ HDG Finish
Design: 4,000 lb. Load | 3 1/2″-9 1/2″ Vertical
Testing: Load and Travel Tests

PT&P custom designed and manufactured ten 200 U-Type constant spring supports with slide plates for an Oil Refinery in Texas. They are fabricated from A36 carbon steel with an HDG finish for plates, angles, and cans. Its dimensions are 31" in height and 52" in length with 19" in width. They are designed for a movement of 3 ½" up to 9 ½" and an operating load of 1100 lbs up to 4800 lbs. They were custom-designed to match the box dimensions of a competitor. The units had a Standard Load Test performed prior to shipment.

Constant springs are sometimes installed near rotating equipment such as pumps and compressors used in manufacturing, mining operations, utilities, oil and gas extraction, and cross-country pipelines. By providing constant support to piping leading to rotating equipment subject to both vertical and horizontal movement, these types of spring hangers help to decrease stresses imposed on rotating equipment, thereby extending the life of the bearings and seals within these units.

For this application, our constants were designed and manufactured with carbon steel; however, depending on application requirements, such as a furnace, we can also provide constant spring supports utilizing stainless steel material, which accommodates high temperatures and corrosive environments. We created the world’s smallest constant spring support. Our nano constant is ideal for such applications:

Nano Constant

PT&P REF. ORIGINAL POST 10202020

Read More

Compact Spring Supports Designed for a Heat Exchanger at a Large Oil Refinery
March 5, 2024

Compact Spring Supports Designed for a Heat Exchanger at a Large Oil Refinery

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. The DST compact spring support is specifically designed to relieve excess loading on process equipment. Benefits: Minimizes excessive loads on sensitive equipment, same load for smaller working range (25-50% less space), ideal for locating under equipment flanges & reduces design time, maintenance cost and accidents.

PT&P REF. ORIGINAL POST 11172020

Read More

F-Type Variable Spring Supports Designed for a Petrochemical Plant in Canada
February 27, 2024

F-Type Variable Spring Supports Designed for a Petrochemical Plant in Canada

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.

Variable supports are typically used for the following considerations in piping systems:

  • Compensating for Thermal Expansion
  • Maintaining Stress and Load
  • Installation in Piping Systems
  • Maintenance
  • Supporting Heavy Loads

Variable spring cans play a crucial role in maintaining the integrity and stability of piping systems by compensating for thermal expansion or contraction, supporting heavy loads, and allowing for vertical movement. They are essential components in industries such as petrochemical, power generation, semiconductor, refining, paper and pulp processing, and other applications where large-scale piping systems are employed.

Variable spring cans come in a variety of designs and are constructed using different materials to suit specific applications and environmental conditions. Materials commonly used for variable spring cans include carbon steel, stainless steel, and special alloys. The selection of materials is crucial to ensure that the device can withstand the corrosive effects of certain fluids or harsh environmental conditions.

PT&P REF. ORIGINAL POST 05192020

Read More

Hydraulic Snubbers for an Ammonia Plant in Louisiana
February 20, 2024

Hydraulic Snubbers for an Ammonia Plant in Louisiana

Type: Hydraulic Snubbers
Design: 3,000-15,400 lb load/5″-12″ stroke
Material: Carbon Steel
Size: 31″ up to 148″ pin-to-pin and cylinder diameters from 2.5″ to 5″

Piping Technology & Products designed these hydraulic snubbers for an ammonia plant in Louisiana. The snubbers ranged in length from 31" up to 148" pin-to-pin and cylinder diameters from 2.5" to 5". They are designed for an operating load ranging from 3,000 lb. to 15,400 lb. and have a 5" to 12" stroke. Hydraulic snubbers are designed to protect the piping system when a sudden, heavy load is applied (such as an earthquake of high intensity), which can cause serious vibrations leading to damage and possible failure of the piping system.

Most hydraulic snubbers have a piston which is relatively unconstrained in motion at low displacement rates. At high displacement rates the piston "locks up", that is, the force required to move the piston increases substantially, usually as a result of the closing of a valve.

Hydraulic snubbers are used in many applications and are typically needed urgently in operational facilities. We have provided these products in all major verticals including refining, petrochemical, renewables, and power operations.. Our hydraulic snubbers are built in accordance with ASME Boiler and pressure vessel code and our Laconia, New Hampshire operations have ASME Nuclear Stamp "NS" for nuclear applications.

PT&P REF. ORIGINAL POST 11232016

Read More
Top