Features and structure shape of butt welding flange

Butt welding flange is a kind of pipe fittings, which refers to the flange with neck and the transition of round pipe and butt welding with the pipe.

Butt welding flanges are not easy to deform, have good sealing, and are widely used. They have corresponding rigidity and elasticity requirements and reasonable butt welding thinning transition. The distance between the welding port and the joint surface is large, and the joint surface is protected from welding temperature deformation. The horn-shaped body structure is suitable for pipelines with large fluctuations in pressure or temperature or high temperature, high pressure and low temperature pipelines. It is generally used for the connection of pipelines and valves with a PN greater than 2.5MPa; it is also used for transporting expensive, flammable and explosive On the pipeline of the medium.

Production material

WCB (carbon steel), LCB (low temperature carbon steel), LC3 (3.5% nickel steel), WC5 (1.25% chromium 0.5% molybdenum steel), WC9 (2.25% chromium), C5 (5% chromium% molybdenum), C12 ( 9% chromium 1% molybdenum), CA6NM (4 (12% chromium steel), CA15(4) (12% chromium), CF8M (316 stainless steel), CF8C (347 stainless steel), CF8 (304 stainless steel), CF3 (304L stainless steel) ), CF3M (316L stainless steel), CN7M (alloy steel), M35-1 (Monel), N7M (Haast Nickel Alloy B), CW6M (Hasta Nickel Alloy C), CY40 (Inconel)

Connection form : One-sided welding, double-sided nut connection.
Product features : Beautiful appearance, smooth surface, acid and alkali resistance, anti-corrosion, and strong texture performance.
Production process : The material is cut in the sub-oxygen furnace, the whole is forged or the finished product is forged and cut.
Processing method: High-precision CNC lathe turning, CNC radial drilling and drilling.

Product parameter
(1) The diameter of the center circle of the bolt hole: 50mm—-2130mm
(2) Bolt hole diameter: 11mm-30mm
(3) Flange thickness: 12mm-58mm
(4) Tube outer diameter: A(17.2-2032MM) B(14-2020MM)
(5) Flange inner diameter: A (18-2036MM) B (15-2024MM)
(6) Theoretical weight of flange: 0.36kg–234.6kg (DN1800)

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