Blog Category: ASME/MISCELLANEOUS FABRICATION | Piping Technology & Products, Inc.

Custom Manifolds Designed for a Polyethylene Facility

October 29, 2019

Type:	Custom Manifolds with Globe and Gate Valves
Size:	72” Height \| 1″ x 1-1/2″ \| 1″ x 2”
Material:	SA-105 \| SA-106B \| SA-36
Testing:	100% Dimensional \| Inspection Q.C. Inspection NDE(RT,PT) Hardness \| Hydro-test @ 430 PSIG

PT&P supplied 41 custom manifolds with globe and gate valves to a manufacturing complex in La Porte, Texas. The manifolds were installed in a hot water tracing supply and return system at a high-density polyethylene (HDPE) facility. Each manifold was welded to the exact specifications listed on the production drawing developed. The body was fabricated from 2” and 1” seamless XS pipe. The ports were FNPT and flange connection for field installation. All Manifolds were supplied with welded brackets and vertical support stands. The material used for the valves and flanges were SA-105, pipe SA -106B, and the supports are manufactured from SA-36. The overall height is 72″, and the dimensions are 1″ branches x 1-1/2″ run line and 1″ branches x 2″ run line. Inspection and Q.C. tests were performed by an internal and TPI team including 100 % dimensional inspection, NDE(RT,PT), hardness, and hydro-test at 430 PSIG.

Bellmouth Reducers & Custom Pipe Spools Designed for an Ammonia Plant

August 26, 2019

Type:	Bellmouth Reducers, Ring Flanges, Pipe Spool Elbows
Size:	36” NPS \| Opened to 48″ NPS
Material:	Carbon Steel \| 304 Stainless Steel
Design:	150°F \| 150 PSI Operating Pressure

PT&P designed and manufactured bellmouth reducers, ring flanges and custom pipe spool elbows for an Ammonia Plant in Texas. Bellmouth reducers are a single piece component used to transition a large outside diameter into a smaller outside diameter piping. These reducers are used in the cooling process; the shape allows for drawing in maximum amounts of air while preventing loss. The bellmouths are fabricated from carbon steel and 304 stainless steel. They are designed for operating temperatures of 150°F with an operating pressure of 150 PSI. Dimensions are 36” NPS opened to 48” bellmouth. Tests that were performed are spot x-ray, visual and dimensional, PMI-alloys and stainless steel.

Personnel Protection Shields Designed for a Power Plant

July 8, 2019

Type:	Personnel Protection Shields
Size:	8″ Dia. \| Up to 36″ Lengths
Material:	Galvanized Carbon Steel
Design:	1050°F Operating Temperature

PT&P custom designed these personnel protection shields for a power plant in Wyoming. The personnel protection shields are used when insulating the line is not necessary, but operating temperatures require safeguarding personnel from coming into contact with the pipe. These shields are designed for an 8” diameter pipe operating at 1050°F. They are fabricated from carbon steel and range in lengths up to 36”.

View PDF

Closure Flange Support Hinges for Supporting Medium to Heavy Duty Blind Flanges

January 28, 2019

Permanent and Removable Hinges for Supporting a Medium to Heavy Duty Blind Flange — Closure Flange Support Hinges for Supporting Medium to Heavy Duty Blind Flanges

Presently, blind flanges are used to provide an airtight cover to various piping systems that include pipelines in the oil industry, heat exchangers, ships, tanks, etc.

Routine maintenance requires the heavy duty blind flange to be removed for cleaning and repairs. However, for these types of flanges, it is quite difficult to disassemble, clean and repair. It typically requires employing a forklift, crane, or other lifting devices. This can require excessive man-hours, and the alignment of the flanges can remain unpredictable.

PT&P introduced a closure flange hinge with specially designed self‐locking bolts and two self-lubricated hinge studs to support the blind flange when all the fastening bolts are removed for maintenance or replacement. The blind flange can be opened like a “door” with little effort. Our product opens up to 180 degrees, providing full accessibility to work on the pipeline, heat exchanger, or other equipment.

To solve the issues, PT&P invented two versions of closure flange hinges for blind flanges: temporary / removable hinge and permanent / fixed hinge

Portable hinges project amount

PT&P recently designed 159 permanent and removable hinges for up to 72″ diameters, We can accommodate for larger sizes upon request.

View PDF Handout on Closure Flange Support Hinges

Personnel Protection Shields, Designed and Fabricated by PT&P for a Local Refinery

January 14, 2019

View PDF on Personnel Protection Shields

Type:	Personnel Protection Shields
Size:	11″ Dia. \| Up to 48″ Lengths
Material:	Carbon Steel \| 2-Coat Paint System
Design:	Operating Temps. Require Safeguarding Personnel

PT&P custom designed, fabricated and provided installation oversight for sixty-five personnel protection shields for a refinery in Texas. The personnel protection shields are used when insulating the line is not necessary, but operating temperatures require safeguarding personnel from coming into contact with the pipe. These shields are fabricated from carbon steel with a two-coat paint system. They are 11” diameter, and range in lengths up to 48”.

Function of PT&P’s Bulletproof Protection Shield (Critical Defense Product)

May 23, 2018

PT&P’s Bulletproof Protection Shield provides safety for defense personnel with head-to-toe protection. It also enables mobility during one onto one incidents.
Learn more about this critical defense product in this video.

108" Dia. Storage Tank and Containment Tank Designed for a Chemical Plant in Texas

January 11, 2015

Sweco Fab., a division of PT&P, designed and fabricated this 108″ diameter storage tank that will be submerged inside a containment tank for a chemical plant in Texas. The storage tank is fabricated from 1/2″ thick SA516-70 carbon steel and is 240″ in length. The containment water tank measures 295″ L x 124″ W x 128″ H. The storage tank is designed for 100 PSIG at 130°F internally and 15 PSIG at 130°F externally. The storage tank was hydro tested for 1 hour at 150 PSI and a full radiography test was done prior to shipment.

42" Dia. Transition Piece Designed for a Water Tower in Texas

October 6, 2013

Sweco Fab, Inc. (a division of PT&P) custom-designed a transition piece weighing 6,000 lb. for a facility in Texas. The piece measures 48″ x 72″ x 72″ and is fabricated from carbon steel. It will be used to connect a round water tower to a square duct. Prior to shipping, the product was 100% dye penetrant tested.

42" Dia. Stainless Steel Storage Tank

July 21, 2013

Sweco Fab. designed and fabricated storage tanks from 1/4″ thick ASTM A240 grade 304 stainless steel. The tanks are 42″ in diameter, 72″ in overall length and 39-7/8″ in height. The legs are fabricated from SA36 carbon steel. They are designed for 1 PSIG and ambient temperatures. The storage tanks were hydro tested and leak tested for 8 hours prior to shipment.

48" Dia. High Pressure Knock-out Drum Vessel

June 29, 2013

Sweco Fab designed and fabricated a high-pressure knock-out drum for a refining company in El Paso, Texas. The pressure vessel was designed according to ASME Section VIII Div. 1 codes with an overall height of 351″ and inside drum diameter of 48″. Its main application is to separate the vapor and liquid in the refining process. It contains a fireproofing skirt and a stainless steel demister pad that aids the separation process. The shell is fabricated from 3/8″ thick SA516 Grade 70 carbon steel, and the forge fittings are fabricated from SA105 carbon steel. The knock-out drum has an operation temperature of 450°F at 125 psig, and underwent radiography, dye penetrant, and hydro-tests before it was shipped.