Jiangsu, China
Business Type:
Manufacturer/Factory & Trading Company
Business Range:
Industrial Equipment & Components, Manufacturing & Processing Machinery, Metallurgy, ...
Main Products:
Management System Certification:
ISO 9001
OEM/ODM Service

Long Neck Flange, Flanges, Forging manufacturer / supplier in China, offering Forged Raised Face Long Welding Neck Stainless Steel Flange, Wind Turbine Shafts with a Variety of Wind Turbine Sizes, Professional Steel Manufacturer 40cr Forged Roll Sleeve and so on.

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Supplier Homepage Products flange Forged Raised Face Long Welding Neck Stainless Steel Flange

Forged Raised Face Long Welding Neck Stainless Steel Flange

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Min. Order / Reference FOB Price
1 Piece US $5-50/ Piece
Transport Package: Plywood Cases, Pallets or Customers′ Requirements
Payment Terms: L/C, T/T
Processing Object: Metal
Molding Style: Forging
Molding Technics: Pressure Casting
Application: Machinery Parts
Material: Steel
Heat Treatment: Quenching

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Basic Info

Surface Treatment: Polishing
Standard: ASTM
Certification: ISO 9001:2008, API/Q1
Trademark: hongfeng
Origin: Jiangsu Jiangyin
HS Code: 73072100

Product Description


Product Description

Long Neck Flange

Forged Raised Face Long Welding Neck Stainless Steel Flange

1. Application:

For seal or connect of pipe/tub-e lines

2. Material:

304,304L,316,316L,carbon steel or other material on request

3. Standard:


4. Size:

DN15 (1/2") to DN5000 (200")

5. Type:
 Slip-On, Welding Neck, Blind, Socket Welding, Threaded, Lap Joint and Plate etc.

Types' Specification

1. Not normally used in high-stress applications due to low hub and weld attachment

2. Silps over outside of pipe

3. Inside of flange welded at hub and end of pipe

Welding neck

1. Preferred for high-pressure, subzero or elevated temperature

2. Hub is tapered and bored to match pipe's inside diameter so flow is not restricted, preventing turbulence and reducing erosion

3.Easily radiographed and provides excellent stress distribution


1. Used to close ends of piping

2. Has no bore

3. Permits access to sealed lines

Socket welding

1.For small-diameter chemical processes, hydraulic and stream distribution lines

2. Similar to slip-on flange

3. Counter bore matches pipe bore, allowing unrestricted flow

4. Counter bore from hub side fits pipe's outer diameter -  can insert pipe in socket with fillet weld at hub


1. Used where welding would would be hazardous

2. Designed for low-pressure and non-cyclic applications

3. Bore is threaded to match pipe thread

4. Tapered to seal pipe and flanges

Lap joint


1.Used where bolt alignment or access for cleaning is required

2.Similar to slip-on flange when used with lap joint stub end

3. Radius at intersection of flange face and bore to match lap joint stub end

Different accessories are available 
6.  Kinds of forging: 

  Free forging/Die forging/Rolling  

7. Rustproof treatment: 

 Lightly oiled, Galvanized,  Painting with different colors,   Just keep the flanges dry and clean as per customers' requirement 

8. Inspection: 

 Factory in-house, Third party inspection available upon request 

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