Weld Neck Flansche (Code 111) - BS 4504

We are Wenzhou Juheng Machinery Manufacturing Co.,Ltd.Welcome to contact us. This is our product Wed Neck Flanges(Code111)-BS 4504,and the details are as below:British Standard BS 4504 : Section 3.1 : 1989 - Circular Flanges for Pipes, Valves and Fittings (PN Designated), Specification for Steel Flanges. This covers flanges in nominal pressure ranges PN 2.5 to PN 40 and nominal sizes up to DN 4000 (see table below). BS 4504 substantially agrees with ISO 7005-1 : 1992 (E) Part 1 : Steel Flanges. BS 4504 : 1969 is still commonly used. This older standard allows for manufacture from bar, whereas the latest standard specifies that forging or plate are to be used, which can be significantly more expensive. There are minor differences in dimensions between the two versions. The following tables are based on the later version.And the drawing is attached in the end. 1)flange meterial: 304, 304L, 316, 316L, 321, 301, 202, F51, 309, 904L; 2)flange size:DN10-DN2000; 3flange pressure:PN2.5mpa,PN6mpa,PN10mpa,PN16mpa,PN25mpa,PN40mpa; 4)flange special design :available; 5)flange certifacation:ISO9001:2008; 6)flange price: competitive; 7)flange used in petroleum, chemical, power, gas, metallurgy, ship-building, construction,etc