Flange cover

Flange cover is also known as blind flange, which is a non-perforated flange in the middle, which can be used to seal the pipe. The effect is the same as welding head and thread cap, except that the blind flange and silk cap can be unloaded at any time, while welding seals are not. There are many types of sealing surface, including plane, convex surface, concave convex surface, mortise surface and ring joint.

Flanged cover

Plane (FF), surface (RF), concave convex surface (MFM), tenon groove surface (TG), ring joint surface (RJ)

Flange cover production material

Carbon Steel: ASTM A105,20 #, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70;

Stainless Steel (Stainess Steel) : ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;

Alloy Steel, Alloy Steel) : ASTM, F5a A182 F1, F9, F11, F12, making, F91, A182F12, A182F11, 16 MNR, Cr5Mo, 12 cr1mov, 15 crmo, 12 cr2mo1, A335P22, St45.8 / Ⅲ;

Production standard: HG/t20592-2009, HG/t20615-2009, GB/t9123.1-2000, GB/t9123.2-2000, GB/t9123.3-2000, GB/t9123.4-2000.