BS 4504 SLIP ON PLATE FLANGE RAISED FACE / FLAT FACE
PN6, PN10, PN16, PN25, PN40, PN64
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 ...
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