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Carbon Steel Pipe Fittings

We are a growing manufacturing company in the field of carbon steel fittings and low temperature carbon steel fittings.we offers a complete range of pipe fittings such as carbon steel reducer, carbon steel elbow, carbon steel tee, carbon steel cross, carbon steel stub ends and carbon steel pipe bends. We specialise in the manufacture of special size and custom shape carbon steel pipe fittings for our customers.
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ASTM A420 Grade WPL6 Carbon Steel – Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service


This specification covers wrought carbon steel and alloy steel pipe fittings of seamless and welded construction for use in pressure piping and pressure vessel service at low temperatures. Materials shall consist of forgings, bars, plates, seamless or fusion welded tubular products with filler metal added, and shall be produced by open-hearth, basic-oxygen, or electric-furnace process.Forging or forming operations shall be performed by one or a combination of two or more of the following procedures: hammering, pressing, piercing, extruding, upsetting, working, bending, fusion-welding, or machining. All welding shall be completed prior to the austenitizing heat treatment, which shall be executed in the normalized, normalized and tempered, annealed, or quenched and tempered conditions. Steel specimens shall conform to required values of chemical composition, tensile strength, yield strength, elongation, wall thickness, and Charpy V-notch impact value. All fusion-welded butt joints shall undergo radiographic examination, while hydrostatic testing of fittings is not required in this specification. Repair welding shall be permissible for parts made to dimensional standards.


We are higher quality Manufacturer of A420 WPL6 Fittings, carbon steel butt welding pipe fittings, A403 Gr WP304, A403 Gr WP 304L, A403 Gr WP316, A403 Gr WP316L, A403 Gr WP316Ti, A403 Gr WP321, A403 Gr WP321H, A403 Gr WP347, A403 Gr WP347H, A403 Gr WP317, A403 Gr WP 317L,  A420 Fittings, Carbon Steel Buttweld Fittings, A105 Flanges, ASTM A350 Carbon Steel Flanges, A694 Carbon Steel Flanges, Alloy Steel Pipe Fittings, ASTM A234 Fittings, A234 Alloy Steel Pipe Fittings, Alloy Steel Buttweld Fittings.


A420 WPL3/WPL6 Fittings Specifications

Grade SpecificationCarbon Steel: ASTM/ASME A234 WPB / A860 – MSS-SP-75 WPHY 42 / 46 / 52 / 56 / 60 / 65 / 70 Low temperature Steel: A420 WPL3 / A420 WPL6
TypeSeamless / Welded / Fabricated
Bending RadiusR=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Range½" NB to 48" NB in Sch 10s, 40s, 80s, 160s, XXS.
DimensionsANSI/ASME B16.9, B16.28, MSS-SP-43. 
Applicable Standards1-ASME B 16.9 for large Bore 
2-ASME B 16.11 for small Bore (socket welded)
3-ASME B 16.25 for butt weld ends
4-ASME B 16.28 for small radius elbow
Seamless/ Welded 100% Radiography Tested


StandardDescription
ASTM A182/A182M

Forged or rolled alloy steel pipe flanges, forged fittings and valve

and parts for high temperature service.

Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings

ASTM A403/A403MWrought austenitic stainless steel piping fittings.
ASTM A815/A815MWrought ferritic, ferritic/austenitic and martensitic stainless steel piping fittings.
AS 2129Flanges for pipes, valves and fittings
ANSI/ASME B1.20.1Pipe threads, general purpose (inch).
ANSI B16.5Steel pipe flanges and flanged fittings.
ANSI B16.9Factory-made wrought steel butt-welding fittings.
ANSI B16.11Forged steel fittings socket-welding and threaded.
Socket Welding and Threaded Forged Fittings
ANSI B16.25Butt-welding ends.
MSS SP43Wrought stainless steel butt-welding fittings.
Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
BS21Threading.
ISO 4144Stainless steel fittings threaded to ISO 7-1.
MSS SP-95Swage(d) Nipples and Bull Plugs
BS3799Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry
ANSI – B 16.9

ASTM A403

ASME SA403

Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings

API 590-605
ASME B16.9
Factory-Made Wrought Buttwelding Fittings
ASME B16.25Buttwelding Ends
ASME B16.28Wrought Steel Buttwelding Short Radius Elbows and Returns


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