Stainless Steel Weld Neck Flange
Product Overview
The LIANHE Stainless Steel Weld Neck Flange features a tapered hub and butt-weld end for connection to compatible piping systems.
Its hub helps transfer stress from the flange to the pipe, making the product suitable for demanding pressure and temperature conditions when correctly selected, welded, and inspected.
Technical Specifications
Size Range: 3/8"–60" (DN10–DN1500)
ASME Pressure Classes: Class 150–2500
EN Pressure Ratings: PN6, PN10, PN16, PN25, and PN40
JIS Pressure Ratings: 5K, 10K, and 20K
Available Facing Types:
Raised Face (RF)
Flat Face (FF)
Ring-Type Joint (RTJ)
Male Face
Female Face
Tongue Face
Groove Face
Applicable Standards: ASME/ANSI B16.5, ASME B16.47, JIS B 2220, EN 1092-1, BS 4504, GB/T 9119, HG/T 20592, applicable DIN standards, AS 2129, and GOST 12821
Available Materials:
ASTM A182 F304, F304L, F316, and F316L
ASTM A182 F310S, F321, and F347
SS304, SS316, and SS316L
1.4301, 1.4306, and 1.4404
S31803 and S32205 Duplex Stainless Steel
S32750 and S32760 Super Duplex Stainless Steel
904L Stainless Steel
Manufacturing Process: Forging and Precision CNC Machining
Product Marking: Product Name + Size + Standard + Material + Heat Number. Customer logos are available.
Surface Treatment: Degreasing and Cleaning or Pickling
Packaging: Bubble Wrap or Plastic Protection, Wooden Cases, or Pallets
Certificates: GB/T 19001-2016, ISO 9001:2015, and CE documentation for applicable products
Brand: LIANHE
HS Code: 7307210000
Place of Origin: Wenzhou, Zhejiang, China
Product Advantages
Tapered hub for improved stress distribution
Butt-weld connection for permanent installation
Suitable for demanding piping systems
Multiple pressure ratings and facing types
Good corrosion resistance
Forged stainless steel construction
Material traceability through heat-number marking
Customized production available
The flange standard, size, pressure rating, material, facing, bore, wall thickness, gasket, and mating pipe must be confirmed before ordering.
Applications
Suitable for compatible applications in:
Chemical and petrochemical plants
Oil and gas pipelines
Power-generation systems
High- and low-temperature pipelines
Industrial processing facilities
Other demanding piping systems
Use with flammable, hazardous, or high-pressure media requires project-specific engineering approval, welding procedures, testing, and inspection.
Quotation Requirements
Please provide:
Product name and size
Pressure rating
Material grade
Flange standard and facing
Pipe wall thickness or bore
Required quantity
Inspection requirements
Commercial Terms
MOQ: Normally 5–10 pieces, depending on specification and stock availability.
Free Samples: Available for selected standard products; express charges are normally paid by the recipient.
Quotation Time: Normally within three working hours.
Quotation Validity: Normally 3–7 days, subject to market conditions.
Delivery Time: Approximately 3–7 days for regular products and approximately 25 days for new production.
Payment Terms: 30% T/T deposit and 70% balance before delivery. Western Union, PayPal, and other agreed methods are available.
Shipping Terms: EXW, FOB, CFR, CIF, DDP, and DDU.
Transportation: Sea, rail, truck, air, or international express.
Manufacturer: LIANHE
Place of Origin: Wenzhou, Zhejiang, China
