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Weld Neck Flange

Material: Stainless Steel, Duplex, Super Duplex, Nickel Alloys

Type: Weld Neck Flange

Class: 75#-2500#, 75LBS-2500LBS

Size: 1/2" (15 NB) to 48" (1200NB),DN10-DN1000

Face: FF, RF, RTJ, TG, LJ

Standard: ANSI B16.5,EN1092-1, SABA1123, JIS B2220, DIN, GOST,UNI,AS2129, API 6A, etc.

Availability:
  • Weld Neck WN Flange

Product Description

Product Name

Weld Neck WN Flange

Size

1/2"-48"

Pressure

75#-2500#, 75LBS-2500LBS

Standard

ANSI B16.5,EN1092-1, SABA1123, JIS B2220, DIN, GOST,UNI,AS2129, API 6A, etc.

Wall thickness

SCH5S, SCH10, SCH10S ,STD, XS, SCH40S, SCH80S, SCH20,SCH30,SCH40, SCH60, SCH80, SCH160, XXS ,customized and etc.

Face

FF, RF, RTJ, TG, LJ

Surface

pickled, sand rolling, polished, mirror polishing and etc.

Material

Stainless steel: A403 WP304/304L, A403 WP316/316L, A403 WP321, A403 WP310S, A403 WP347H, A403 WP316Ti, A403 WP317, 904L,

Duplex stainless steel: UNS31803, SAF2205, UNS32205, UNS31500, UNS32750 , UNS32760, 1.4462,1.4410,1.4501 and etc.

Nickel alloy: ASTM/ASME SB 366 Alloy 200/UNS N02200, Alloy 800HT/Incoloy 800HT/UNS N08811, Alloy 400/Monel 400/UNS N04400, F904L/UNS N08904, Alloy 800/Incoloy 800/UNS N08800, Alloy C-2000/UNS N06200, Alloy 925/Incoloy 925/UNS N09925, Alloy C-22/UNS N06022, Alloy 201/UNS N02201, Alloy C-276/Hastelloy C-276/UNS N10276, Alloy 625/UNS N06625, Nimonic 80A/Nickel Alloy 80A/UNS N07080, Alloy K-500/Monel K-500, Alloy 20/UNS N08020, Alloy 800H/Incoloy 800H/UNS N08810,Alloy 600/Inconel 600/UNS N06600, Alloy 31/UNS N08031,Hastelloy C-276/UNS N10276, Alloy 825/Incoloy 825/UNS N08825,Alloy 20/N08020

Application

Petrochemical industry;aviation and aerospace industry;pharmaceutical industry,gas exhaust; power plant;ship building; water treatment, etc.

Material Standard

ASTM/ASME SB 366

Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings

ASTM/ASME SA 234

Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service

ASTM/ASME SA420

Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service

ASTM/ASME SA 815

Standard Specification for Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings

ASTM/ASME SA403

ASTM A403 / A403M Standard Specification for Wrought Austenitic Stainless Steel Piping Fitting

ASTM/ASME SA 860

Standard Specification for Wrought High-Strength Low-Alloy Steel Butt-Welding Fittings

ASTM/ASME SB337

Standard Specification For Seamless and Welded Titanium and Titanium Alloy Pipe

ASTM/ASME SB 466

Standard Specification for Seamless Copper-Nickel Pipe and Tube

Producing Standard

ASME B16.9

Long Radius Elbows,Long Radius Reducing Elbows,Long Radius Returns,Short Radius Elbows,Short Radius 180-deg Returns,3D elbows,Straight Tees,Straight Crosses,Reducing Outlet Tees,Reducing Outlet Crosses,Lap Joint Stub Ends,Caps,Reducers

ASME B16.28

Short Radius Elbows,Short Radius 180-deg Returns

ASME B16.49

Made Wrought Steel Butt welding Induction Bends for Transportation and Distribution Systems

MSS SP43

Long Radius Elbows,Straight and Reducing-on-the-Outlet Tees,Lap Joint Stub ends,caps,long radius 180 Degree returns,concentric reducers,eccentric reducers

MSS SP75

Long Radius Elbows,3R elbows,straight tees,reducing outlet tees,caps,reducers

Why Source This Product from JN Alloy?

 
  • Full traceability from melt to final product — heat number, lot number, and mill certification on every piece.
 
  • In-house dimensional inspection and material verification (PMI testing by XRF).
 
  • Flexible order quantities — from single pieces for maintenance to full project tonnage.
 
  • Experienced technical sales team able to support material selection, standard interpretation, and weld procedure development.
 
  • Competitive lead times from our warehouse stock and established mill relationships.
 
  • Export packaging and documentation for projects worldwide.

Contact us with your pipe sizes, fittings list, or plate dimensions, and we will provide a detailed quotation with full material certification options.
JN Alloy is the leading stainless steel, duplex steel, and nickel alloy supplier and manufacturer.
Tel: +86 19339900211
Add: Stainless steel Market 289, Xinwu District , Wuxi, China
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