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Lap Joint / Loose Flange

Material: Stainless Steel, Duplex, Super Duplex, Nickel Alloys
Type: Lap Joint/ Loose Flange

Size: 1/2"-24"
Face: FF, RF, RTJ
Process: Forging
Standards: ANSI B16.5,EN1092-1, SABA1123, JIS B2220, DIN, GOST,UNI,AS2129, API 6A, etc.
Availability:
  • Lap Joint Flange

Product Description

Product Name

Lap Joint / Loose Flange

Size

1/2"-24"

Pressure

150#-2500#,PN0.6-PN400,5K-40K

Standard

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

Stub End

MSS SP43, ASME B16.9

Face

FF, RF, RTJ

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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