Butt welding flange is not easy to deformation, good sealing, wide application, suitable for pressure or temperature fluctuations of pipeline or high temperature, high pressure and low temperature pipes, advantage is that the price is cheaper, nominal pressure no more than 2.5 MPa; Also used to transport is expensive, inflammable, explosive medium pipeline, nominal pressure around PN16MPa.

Production standard

Production standard: commonly used chemical standard HG/T20592-2009, HG/T20615-2009, the national standard GB/T9115.1-2000, GB/T9115.2-2000, GB/T9115.3-2000, GB/T9115.4 standard JB/T86.2-94-2000, the mechanical, Marine standard of CB/T47-1999

Carbon steel stainless steel alloy steel

The production process

Blanking, forging, heat treatment and machining to finished product inspection, packaging

Flat welding flange

The connection form Single-sided, double-sided nut connection.

Product features Beautiful shape, the surface level off is smooth, acid and alkali resistance, corrosion resistance, simple sense strong performance.

Production process and the cutting oxygen furnace, forging press cutting forming or finished product as a whole.

High precision CNC lathe turning processing way, nc rocker drill hole.

Product parameters

(1) the flange diameter: 75 mm - 2190 mm

(2) the central circle diameter of bolt holes: 50 mm - 2130 mm

(3) the bolt hole diameter: 11 mm to 30 mm

(4) the number of bolt hole: 4-48

(5) thread: M10 - M27

(6) of the flange thickness: 12 mm - 58 mm

(7) : pipe diameter (17. 2-2032 - mm) B (14-2020 - mm)

Flange diameter (8) : A (18-2036 - mm) B (15-2024 - mm)

(9) of the flange theory weight: 0.36 kg, 234.6 kg (DN1800)

FLANGE - ASME B16.4 SERIES B (API605)

Standard: ASME B16.47 SER. B (API605)

Pressure: the CLASS of 75150300600900

Size: 26 "60" -

Type: WELDING NECK, BLIND

Material: CS SA105 / SA105N,

L l SS 304/304, 304/304

Coating: Black, yellow paint. Rust - proot oil