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Forged Steel Flange

Short Description:

Material: Forged steel stainless steel

Standard: ASME B16.5,EN1092,JIS

Surface:  Anti-rust oil, clear lacquer, Black lacquer, Yellow lacquer,hot-dipped Galvanized

Size : 1/2″-144″

Heat treatment: Normalizing, Annealing, Quenching+Tempering

Certificate: ISO9001:2008;PED97/23/EC, ISO14001:2004,OHSAS18001:2007

NORTECH is one of the leading China Forged Steel Flange Manufacturer & Supplier.

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What is Forged Steel Flange ?

Forged Steel Flange can be a collar, ring or solid disk that attaches to various pipe applications that allow or restrict the flow of liquids and gases. Pipe Flange installment is usually completed by welding the Flange onto the pipe but the Industry also offers Threaded and Lap Joint Flanges that don’t require welding for installment.

Flange connections are achieved by drilling equally spaced bolt holes into the Flange that align with the matching Flange and then fastened with bolts. Bolt hole patterns are determined by Industry Specifications or customer request. Flanges are usually manufactured based on Industry Specifications established by ANSI B16.5, ASME B16.47, MSS-SP44, API, and AWWA-C207.

Forged Steel Flange Technical Specifications

Steel Flanges


Carbon steel    ASTM A105. ASTM A350 LF1. LF2, CL1/CL2, A234,S235JRG2, P245GH

P250GH, P280GHM 16MN, 20MN ,20#

Stainless steel    ASTM A182, F304/304L, F316/316L

Alloy steel    ASTM A182 A182 F12,F11,F22,F5,F9,F91etc.


ANSI  Class 150 Flanges-Class 2500 Flanges

DIN   6Bar 10Bar 16Bar 25Bar 40Bar

JIS   5K Flanges-20K Flanges

UNI   6Bar 10Bar 16Bar 25Bar 40Bar

EN   6Bar 10Bar 16Bar 25Bar 40Bar


1.Welding neck Flange    2.Slip on

3.Blind flange            4.Long welding neck flange

5.Lap joint flange         6.Socket welding

7.Threaded flange        8.Flat flange

Surface   Anti-rust oil, clear lacquer, Black lacquer, Yellow lacquer,hot-dipped Galvanized,electrical galvanized

Connection Welding, Threaded

Technical     Forged, Casting

Size       DN10-DN3600

Package     Standard export packaging (Plywood Case Of Outside,Plastic Cloth Of Inside).

Heat Treatment Normalizing, Annealing, Quenching+Tempering

Certificate  TUV,ISO9001:2008;PED97/23/EC,ISO14001:2004,OHSAS18001:2007

Applications  Water works, Shipbuilding industry,Petrochemical & Gas industry,

Power industry,Valve industry,and general pipes connecting projects etc.


Advantages of NORTECH Forged Steel Flange

Forged Steel Flange is not easy to deformation, sealing effect is good, widely used, suitable for temperature or pressure fluctuations of the pipe or high temperature,high pressure and low temperature pipe, also used for conveying expensive medium, flammable and explosive medium, toxic gas pipe

What is the Forged Steel Flange used for?

Forged Steel Flange is a kind of component widely used in engineering design. It is an indispensablepartin piping design, pipe fittings and valves, and also a necessary component in equipment and equipment components (such as manhole, mirror level gauge, etc.). In addition, flange fittings are often used in other specialties such as industrial furnaces, thermal engineering, water supply and drainage, heating and ventilation, automatic control, etc. 

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