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April 2001 News

April 10th, 2001 No comments

PT&P Manufactures Custom Designed Embed Plates for Gold Mine in Cajamarca, Peru
Piping Technology & Products, Inc., designed and manufactured 150 special embed plate pieces for Latin America’s largest gold producer. This project involved the production of one hundred fifty, 93″ x 27″ x 1″ embed plates which required the use of 80,000 pounds of steel and anchors. The custom designed, carbon steel, embed plates are to provide stability for the feed openings of four mineshaft reclaim tunnels and are scheduled to be put to use immediately.

Custom Embed Plates for Gold Mine in Cajamarca, Peru

Custom Embed Plates for Gold Mine in Cajamarca, Peru

How to Avoid Pipe Stress
What is Pipe Stress?
“Pipe Stress” refers to piping flexibility analysis.

High Stress Locations on Pipes
High stress areas generally occur at piping elbows, tees and other branch connections. The B 31.3 Piping Code provides stress intensification factors for such locations. Computer piping programs generally do piping flexibility analysis for those other than very simple systems.

Signs of Pipe Stress
An overstressed system could fail by fatigue, leading to a crack, buckling of the elbows, or overload on equipment nozzles.

How to Reduce Pipe Stress
High stress should be uncovered in the design stage. However, existing systems can be checked for incipient cracks by x-ray, ultrasound, acoustic emission or dye penetrant. Also, rerouting the pipe can provide more flexibility and sometimes reduce high stress. When rerouting is impossible or not practical, then pipe stress can be reduced significantly by adding Bellows Expansion Joints. Any sections of the pipe showing cracks must be replaced.

Product of the Month

Transition Piece

Transition Piece

Transition Piece

Transition Piece

(at left)47.25″ I.D. x 23.625″ I.D. 5A516-70 Transition Pieces w/ 5A36 stiffner for ethylene plant in Saudia Arabia. (at right)47.25″ I.D. Universal Expansion Joint w/ SB443 round corners bellows, and SA516-70 flanges for ethylene plant in Saudia Arabia.

Drag Force Test Proves Mechanical Snubbers Durability

March 20th, 2001 No comments
Drag Force Test Proves Mechanical Snubbers Durability

Drag Force Test Proves Mechanical Snubbers Durability

Drag Force Test Proves Mechanical Snubbers Durability

Instrument Panel

Piping Technology & Products, Inc., recently performed its snubber cycle test to prove the durability of a MSA 35 mechanical snubber manufactured for an engineering and construction company at Pine Bluff, Arkansas.

The cyclic test, performed using PT&P’s in-house, horizontal, hydraulic press, is designed to test snubbers at their two modes of operation. At high rates of loading, especially impact, the snubber is expected to provide very high resistance to movement. At low speeds snubbers are to provide very low resistance to movement. Testing a snubber at a low speed displays the normal wear and tear over an extended period of time.

In this case, a cyclic test was performed, in which the MSA 35 Mechanical Snubber with a load rating of 50,000 pounds and design travel of 6 inches was measured at a slow speed response. The low speed force remained at a fairly constant 500 pounds for the 50 hours and 5000 cycles it sustained. This value meets the common criteria that the drag force should be 2% or less than the rated load.

In addition to the snubber cycle drag test, Piping Technology & Products, Inc. has administered other tests such as the burst test for expansion joints. The tests executed by PT&P allow companies to attain the most precise and reliable data available to them. Using this to their advantage, customers will be able to compare data about the recently ordered products, to their individual standards of dependability and durability.

Piping Technology & Products, Inc. and its wholly owned subsidiaries are recognized leaders in manufacturing pipe hangers/pipe supports (variables, constants, cryogenic supports cold shoes, hot shoes, mechanical/hydraulic snubbers, slide bearing plates), expansion joints/compensators (metallic, fabric, rubber, slip-type) and ASME Code Fabrication. PT&P has engineering drawing production stress analysis and full in-house finite element analysis that are used to prove designs. The design software is developed in-house and the calculations contrived are further checked using hand calculations.

Custom Embed Plates for Gold Mine in Cajamarca, Peru

March 1st, 2001 No comments

 

Custom Embed Plates for Gold Mine in Cajamarca, Peru

Custom Embed Plates for Gold Mine in Cajamarca, Peru

Piping Technology & Products, Inc., designed and manufactured 150 special embed plate pieces for 4 gold mines in Cajamarca, a province of northwestern Peru.

At an altitude of 4,700 m, this complex of four gold mines and processing facility is Latin America’s largest gold producer. The gold district is a 10 by 4-km zone of altered rocks with a belt of Tertiary volcanic that extends through Peru.

This project involved the production of one hundred fifty, 93″ x 27″ x 1″ embed plates which required the use of 80,000 pounds of steel and anchors. The custom designed, carbon steel, embed plates are to provide stability for the feed openings of four mineshaft reclaim tunnels and are scheduled to be put to use immediately.

In need of embed plates for an upcoming project? Request a quote today!

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PT&P Aids in the Creation of a "Chemical Island" in Singapore

February 8th, 2001 No comments

Piping Technology & Products, Inc. supplied a variety of pipeline products for the construction of a refinery plant on Jurong Island, Singapore. Jurong Island is a man-made island consisting of four petroleum refineries, 30 petrochemical firms, and many more industrial firms to support its existence.

PT&P Aids in the Creation of a "Chemical Island" in Singapore

PT&P Aids in the Creation of a "Chemical Island" in Singapore

PT&P and U.S. Bellows, Inc. first became involved in this extensive project in May 1998. During this time, PT&P supplied the international construction firm with more than 3,000 cold shoes, 400 slide plates and numerous more spring hangers, constants and fabricated pipe supports. U.S. Bellows, Inc., a wholly owned subsidiary of PT&P, also supplied many of the expansion joints used in the creation of this refinery. This includes three 36″ expansion joints were fabricated and sent to Singapore in October 1999. Two years, 300 jobs, and 670 tons of steel later, PT&P completed the last job for this project in September 2000.

PT&P Aids in the Creation of a "Chemical Island" in Singapore

PT&P Aids in the Creation of a "Chemical Island" in Singapore

PT&P has extensive experience performing product testing to ensure product quality and dependability. For this particular project a load test was performed on a 60″ diameter cold shoe. By measuring the axial and lateral loads, vertical tension and temperature, PT&P engineers are able to determine its maximum load.

Product testing was also performed on the three 36″ expansion joints provided. The bellows together with the hinge assembly were hydro-tested and a dry nitrogen test between the two plies was conducted to ensure that they would withstand the design pressure. These expansion joints were tested per ASME Sect. VIII Div. 1 Appendix 26 standards.



PT&P Aids in the Creation of the "Chemical Island"

February 4th, 2001 No comments

Piping Technology & Products, Inc. supplied more than 3,000 cold shoes, 400 slide plates and numerous more spring hangers, constants and fabricated pipe supports for the construction of a refinery plant on Jurong Island, Singapore. U.S. Bellows, Inc., also supplied many of the expansion joints used in the creation of this refinery.
Jurong Island is a man-made island consisting of four petroleum refineries, 30 petrochemical firms, and many more industrial firms to support its existence.

Tips on Corrosion Protection
There are four methods of protecting carbon steel pipe support components from corrosion; painting, zinc coatings, hot dip galvanizing, and combinations of these.  Painting has an advantage when appearance and choice of color are important. Modern painting systems may be appropriate protection in certain environments. Paint provides a barrier protection to a metal surface. The ability of zinc to provide cathodic protection for carbon steel in addition to barrier protection is a fundamental advantage. In most cases the reduction in life-cycle costs justifies the small additional cost of galvanizing. Indeed painting and galvanizing together can provide a synergistic benefit which may be justified in some cases.  For more information on corrosion, refer to http://www.pipingtech.com/technical/tech1/corrosion_protection_1.htm

PT&P’s Diverse Product Testing
Piping Technology & Products, Inc. is a recognized leader in pipe supports, pre-insulated pipe supports, miscellaneous fabrication and expansion joints and has extensive experience with several different types of product testing. This includes :

* Load Testing : The objective of the load test is to determine the maximum load for pipe supports and other products. Load tests are done on an assortment of pipe supports.

* Snubber Testing : The objective of the snubber cycle test is to (1) display the normal wear and tear for a snubber over an extended period of time, and (2) display the resistance to an abrupt disturbance.

* Burst Testing : The objective of the burst test is to determine the ultimate pressure resistance. Primarily conducted on bellows.

See more about testing on our site:  Product Testing

Specially Fabricated Embed Plates

September 4th, 2000 No comments
Specially Fabricated Embed Plates

Specially Fabricated Embed Plates

The picture above is that of embed plates before they are sent to the galvanizers. Piping Technology & Products, Inc. can meet most any fabrication requirement required in any industry, i.e. refineries, chemical plants, power plants, etc.

Want to learn more about our other products? Visit our webinar archives.

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Hydraulic Snubbers in Assembly

June 9th, 2000 No comments
Hydraulic Snubbers in Assembly

Hydraulic Snubbers in Assembly

Shown above are hydraulic snubbers which are used to protect critical components in refineries, power plants and other industrial plants from sudden movement by the attached piping system. Engineers specify these for systems subject to sudden accelerations caused by earthquakes, extreme wind loads or water hammer.Hydraulic snubbers resist sudden rapid movement of the pipe by limiting the flow rate of the fluid inside the snubber. The device is designed to slow movement, such as would be expected during thermal expansion, has practically no resistance, but sudden rapid movement is resisted with a force proportional to the velocity raised to a power, where the power is determined by the orifice valve and flow pattern in the design. Selection of materials and liquids used will depend on the environment where the snubber is installed.

In need of new hydraulic snubbers? Get pricing today!

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Jack Stand

June 8th, 2000 No comments
Jack Stand

Jack Stand

The photograph above shows unique jack stands designed to support stainless steel pipe. The top, which connects to the pipe at elbows, is fabricated from stainless steel. The bottom, which can be used to adjust the height, is fabricated from carbon steel and the galvanized. The two dissimilar materials are separated by a polyurethane[pdf] isolation block which is painted for protection.

Want to learn more about the other types of products we have? Visit our webinar archives today!



access-our-webinar-archives



Pipeline of the Future Museum Exhibit

April 5th, 2000 No comments
Pipeline of the Future Museum Exhibit

Pipeline of the Future Museum Exhibit

The photograph above shows the entrance of the “Pipeline 2000” exhibit at Houston’s Museum of Natural Science

This part of the exhibit was fabricated by SWECO Fab, Inc. a division of Piping Technology & Products, Inc. of Houston, Texas.

Categories: ASME/Miscellaneous Fabrication Tags:

RFID Tag for Pipe Supports

February 18th, 2000 No comments
RFID Tag for Pipe Supports

RFID Tag for Pipe Supports

RFID Tag for Pipe Supports

RFID Handheld Reader

Piping Technology & Products, Inc., in conjunction with other sponsors, has completed the first pilot test of Radio Frequency Identification (RFID) technology for the receipt and tracking of pipe supports material at construction jobsites.

The RFID tags and RFID handheld reader used by Piping Technology & Products, Inc. at the Red Hills Power Plant.

RFID Tag for Pipe Supports

PT&P Pipe Supports in the Field

The material shown here arrived from PT&P’s manufacturing facility in Houston, Texas with an RFID tag affixed to each pipe support assembly.

RFID Tag for Pipe Supports

PT&P Providing Training to Field Personnel

Piping Technology & Products, Inc. shipped approximately 150 pipe supports to the Red Hills Power Plant with radio frequency identification (RFID) chips affixed to each pipe supports.  The RFID tags and RFID handheld reader were provided by SAT Safetrac.  Field personnel were trained on the use of the new technology.  The RFID-tagged pipe support assemblies were then received by field personnel.  Videos of the RFID receiving process were taken for the purpose of comparative time and motion studies.

Mailing: P.O. Box 34506, Houston, TX 77234-4506 Location: 3701 Holmes Road, Houston, TX 77051
Our Subsidiaries: U.S. Bellows: Metallic & Fabric Expansion Joints, Bellows
Sweco Fab: ASME Vessels, Pig Launchers, Spectacle Blinds
 Pipe Shields: Pre-Insulated Pipe Supports, Slides, Guides & Anchors

Fronek Anchor/Darling
: Snubbers, Sway Struts & Sway Braces
Phone: (713) 731-0030 Toll-Free: (800) 787-5914 FAX: (713) 731-8640 info@pipingtech.com

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