Cryogenic Pipe Supports with Micarta® G-10 for an LNG Facility in Australia

April 16, 2018

Cryogenic Pipe Supports with Micarta® G-10 for an LNG Facility in Australia

Type: Cryogenic Pipe Supports
Size: Pipe Size of 1” to 36”
Material: LTCS Material Tops, Stainless Steel, & Micarta® G-10 Insulation
Design: -50°F
Testing: PMI

Piping Technology and Products supplied cryogenic pipe supports with axial stops for an LNG facility in Australia. The cold shoes cold shoes were fabricated utilizing low temperature carbon steel, stainless steel and Micarta® G-10 insulation blocks. We supplied a wide range of lengths and pipe sizes from 1” to 36”. The cryogenic temperatures are low as -50°F. A special paint system was used for the low temperature carbon steel components to resist rust. PMI testing was performed on the stainless parts. Delivery was within 4-6 weeks.

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PT&P Roller Hangers for an Aviation Facility in California

April 2, 2018

PT&P Roller Hangers for an Aviation Facility in California

Type: Roller Hangers
Size: 12″ Wide and 15″ Tall
Material: Cast Iron & Carbon Steel
Design: 965 lbs. Operating Load & 10″ Pipe Size
Testing: Standard Quality Control

These Fig. 195 roller hangers were designed by PT&P for an aviation facility in California. They measure 12″ in width and 15″ in height. The rollers are fabricated from cast iron, with the yoke, roll rod, and hex nuts from carbon steel. The units are designed for a pipe size of 10″ and an operating load of 965 lbs. Standard quality control tests were performed prior to shipment. Roller hangers are used for the suspension of pipe from a single rod where axial movement may occur because of expansion or contraction.

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High Temperature Pre-Insulated Pipe Supports with Slide Plates for an Ethylene Production Plant in Texas

March 27, 2018

High Temperature Pre-Insulated Pipe Supports for an Ethylene Production Plant in Texas

Type: High Temperature Pre-Insulated Pipe Supports with Slide Plates
Size: 15″ Long | 23″ Wide | 4.5″ Insulation
Material: Calcium Silicate, Firetemp®, Carbon Steel with HDG, UHMW Polyethylene
Design: 750°F, 1,325 lb Operating Load, & 12″ Pipe Size
Testing: Standard Quality Control

PT&P custom designed these pre-insulated pipe supports for high temperatures at an ethylene production facility in Texas. The hot shoes are 15″ long and 23″ wide with 4.5″ thick insulation. The insulation is comprised of calcium silicate and Firetemp®. The hot shoes were fabricated from carbon steel with a hot-dipped galvanized finish and the slide plates from UHMW Polyethylene. They are designed as a 2-way guide than can support loads in two directions. They are designed for a pipe size of 12″ in diameter with an operating temperature above 750°F and on operating load of 1,325 lb. Standard quality control tests were performed with a 4-week turn-around time.

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Field Service Inspection on Constant Spring Supports after 30 Years of Service on an Offshore Platform

March 12, 2018

Constant Spring Support after 30 Years of Service Constant Spring Support after 30 Years of Service

The use of zinc and galvanizing has a long history. The early patents for hot dip galvanizing were issued in France and England in 1836 and 1837. This technology was quickly adopted and was widely used in the late-1800s.

In the United States we have bridges more than 100 years old which have galvanized structures. In addition, we have transmission towers and substation structures that are over 70 years old. A pipe rack at a petrochemical plant near Houston was studied after 28 years of service. Measurements of the zinc thickness remaining provided a forecast of another 60 years of service.

Any coating which provides a barrier to the moisture and oxygen in the air will help protect carbon steel from corrosion. A properly painted surface will provide a barrier, but it is subject to scratching from contact with hard objects.

Constant Spring Support Inspection:

Visually inspect each Constant hanger:

Search for signs of visual cracks, fractures, and corrosion of the spring casing and the following:
(1) beam attachment
(2) pin
(3) constant hanger attachment
(4) pipe clamp attachment
(5) weldless eye nut
(6) threaded rod
(9) spring coil
(10) Check if travel stops are removed

Check (7) turnbuckle (if present), lock nuts (8) and other threaded items to ensure they are secured and fastened

Compare the position of the (10) coil with the hot/cold load indicator and operating range of the spring

Check the mobility of the (11) load column

 

Replacement Criteria:

– Signs of excessive corrosion or fatigue

– Rust damage of entire unit

– Modifications to operating conditions

– Consider condition of components (cam mechanisms, bearings, etc.)

Our field service team is available 24×7 for your quick-turn, emergency needs.

Call Field Service: +1-713-992-7048

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Hydraulic Snubbers Designed for a Steam Generator in Mexico

February 26, 2018

Hydraulic Snubbers Designed for a Steam Generator in Mexico

Type: Hydraulic Snubbers
Size: 24″ up to 30″ Pin-To-Pin | Cylinder Dia. 1.5″ to 3.25″
Material: Carbon Steel
Design: 3,000 lb. to 20,000 lb., with a 6″ Stroke
Testing: Standard Quality Control

PT&P designed Fig. 510 AD short strut hydraulic snubbers for a steam generator at a facility in Mexico. The snubbers ranged in length from 24″ up to 30″ pin-to-pin with cylinder diameters of 1.5″ to 3.25″. A total of 48 snubbers were fabricated from carbon steel and designed for an operating load raging from 3,000 lb. to 20,000 lb., with a 6″ stroke. Snubbers are used for systems where unrestrained thermal movement must be allowed except during cyclic disturbance. 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.

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Pre-Insulated Cryogenic Supports for a Propylene Dehydrogenation Application at a Petrochemical Plant in Texas

February 12, 2018

Pre-Insulated Cryogenic Supports for a Propylene Dehydrogenation Application at a Petrochemical Plant in Texas

Type: Pre-Insulated Cryogenic Supports
Size: 12” Long Base | 32” Wide Base | 62″ Overall Height | 18” Long Insulation
Material: Polyurethane | Carbon Steel w/ HDG Finish
Design: Operating Temperature -360°F & 42″ NPS
Testing: Standard Quality Control

Piping Technology and Products, Inc. and custom designed two pre-insulated cryogenic supports for a propylene dehydrogenation application at a petrochemical plant in Texas. The insulation is made from a high density polyurethane Insulation, with the bearing plates and side bumpers fabricated from carbon steel with an HDG finish. The shoes are capable of insulating and supporting at temperatures as low as -360°F. These were designed to support pipeline diameter of 42” with overall height of 62” diameter. Regular quality control tests were performed with a standard turn-around time.

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C-Type Constant Springs Designed for a Chemical Plant in Italy

January 29, 2018

C-Type Constant Springs Designed for a Chemical Plant in Italy

Type: Constant Spring Supports
Size: 14″ x 19″ x 64″
Material: A36 Carbon Steel
Design: 2 1/2” to 5” Total Travel and 7,681 lb. Load
Testing: Standard Load and Travel Tests

PT&P custom designed and manufactured C-Type constant spring supports for a chemical plant in Italy. The constants were designed for travel from 2 1/2” to 5” and are specified to carry a load of 7,681 lb. They are fabricated from A36 carbon steel and have a physical size of 14″ x 19″ x 64″. The supports were designed for max deviation of 6%. The standard load adjustment is 10%. However, this unit was designed with capability of up to 20%, while the standard load deviation is 4%. This constant was custom designed to allow for single pin connection with negligible constant frame at the pin connection. A multi-position locking device was installed, and standard load and travel tests were performed to ensure quality and precise performance.

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U-Type Constant Spring Supports for a Plant in Texas

January 12, 2018

U-Type Constant Spring Supports in Texas

Type: Constant Spring Supports
Size: 35 7/16″ Height & 75 3/4″ Length
Material: A36 Carbon Steel with HDG/304 Stainless Steel
Design: 9″ Total Travel at 979°F & Operating Load 6183 lbs.
Testing: Hydrotested at 6744 lbs.

These 200 U-Type constant spring supports with slide plates were designed by PT&P for a plant in Texas. They are fabricated from A36 carbon steel with an HDG finish and the slide plates manufactured from 304 stainless steel. Its dimensions are 35 7/16″ in height and 75 3/4″ in length. They are designed for 9″ of total travel at 979°F and an operating load of 6183 lbs. The units were hydrotested at 6744 lbs. prior to shipment.

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Custom All Stainless Steel Variable Spring Supports for a Floating LNG Platform in Singapore

January 2, 2018

Custom All Stainless Steel Variable Spring Supports for a Floating LNG Platform in Singapore

Type: Variable Spring Supports
Material: Alloy 2205 Duplex/SAE 5160H
Design: Operating Load up to 3,597 lbs./Operating Temperatures of -15-200°F
Testing: Standard Load & Travel Tests

PT&P manufactured these custom variable spring supports for a floating LNG platform in Singapore. The spring housings are fabricated with alloy 2205 duplex and the coil manufactured from – SAE 5160H. The variables installed heights that range from 10-3/4” to 12–1/16” and are designed for an operating load up to 3,597 lbs. Also load test dye penetrate test was performed operating temperatures of -15°F. These variable springs are also designed to suit a high corrosive environment. They can operate in temperaturs ranging from -14-200°F without compromising its load carrying capacity.

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