Steel flanges made of carbon steel or stainless steel, the materials conform to the JIS, ASTM A182,A105, DIN17100 ST-2 and BS standard.

The above products are very competitive with superior quality, and timely delivery. As one of mass suppliers licensed by Sinopec Corp., the products have been supplied to many foreign engineering companies and clients such as Kvaerner, Toyo, Uhde, Rotary, Dow, Dupont, LG, BP, ConocoPhilips, Emerson, Shell, Bayer, Secco etc.

Forged steel flanges made of carbon steel or stainless steel, the materials conform to the JIS, ASTM A182,A105, DIN17100 ST-2 and BS standard. Dimension to be in accordance with JIS ANSI DIN BS standard accordingly.

The flanges are suitable for connection of steel pipes conveying mediums such as steam, oil, air and water. They are widely used in Chemical industry and Shipbuilding . And the flanges are suitable for welding.The flanges mainly include Welding Neck, Blind, Slip-on, Lap-Joint, Socket,Reducing and Plate type.

1.Flange type: Stainless Flange, pipe flange, steel flange, raised face flange, Plate flange, ring flange, integral pipe flange, steel pipe flange, threaded flange, slip-on flange (SO) slip-on welding flange,socket welding flange, lap joint flange (LJF), welding neck flange (WNF), blind flange, orifice flange.

2. Flange Standard: ASME B16.5, ASME B16.47, EN 1092, ISO7005-1, AWWA C207, BS4504, DIN 2572, JIS2220, GOST 12820, GOST 12821 etc.

3. Flange Materials: A105, SS400, F304, F316L, 304L, F321.F11,F22 eta.

4. Flange Specification: DN15-DN2000

5. Flange Production process: forging, casting, cutting system, roll.

6. Flange Application: it is widely used in chemical, construction, water supply, drainage, oil, light and heavy industrial, refrigeration,sanitation, plumbing, fire protection, electric power, aerospace, shipbuilding and other infrastructure projects.

7. Flange Quality inspection:

1. Our factory has its own "experimental testing center".CNAS Laboratory Accreditation Certificate

2.Control quality strictly.The first pass is the quality inspection on the production line,The second pass is full inspection of the  production quality .

3.We have got internationally recognized certificates, ISO, CE, LR,Philippine certificate,also support third-party testing,as SGS, BV, etc

8.Flange advantages

The quality of raw materials is good, the quality of finished products is superior; Shenlong flange is 100% non-destructive, and uses forging process, which has the characteristics of less air holes and high density; we use CNC lathe processing to ensure the high precision of the products.

A flange standard lays down the dimensions, surface finish, facing type, marking, material and technical specifications for flanges.

Steel flange applications

Forged flanges are used as a connection component for pipes, valves, pumps and other equipment to form a pipework system. They provide easy access for cleaning, inspection, modification or repairs.

Stainless steel or carbon steel forged flanges are used as a connection component for pipes, valves, pumps and other equipment form pipeline systems.

Forged flanges are usually welded onto pipes the threaded pipe end and joined with bolts to make the connection.