Shanxi special-shaped flange is introduced the mechanical flange standard JB

The following is the mechanical flange standard JB.

The mechanical flange standard JB

Standard no. Scope of application is executed

JB/T 74-1994 pipe flange existing technical conditions

JB/T 75-1994 current piping flange type

JB/T 79.1 1994 convex integral cast steel pipe flange of the current

JB/T 79.2 1994 concave and convex surface integral cast steel pipe flange of the current

JB/T 79.3 1994 grooved surface integral cast steel pipe flange of the current

JB/T 79.4 1994 RTJ integral cast steel pipe flange of the current

JB/T 82.1 1994 convex butt welding steel pipe flange current

JB/T 82.2 1994 bump in the face of welded steel pipe flange current

JB/T 82.3 1994 tenon groove in the face of welded steel pipe flange current

JB/T 82.4 1994 RTJ butt welding steel pipe flange current

JB/T 83-1994 flat ring plate loose tube steel pipe flange current

JB/T 84-1994 is concave and convex face ring plate loose tube welding steel pipe flange current

JB/T 85-1994 flange plate loose tube steel pipe flange current

JB/T 86.1 1994 convex current steel pipe flange cover

JB/T 86.2 1994 concave and convex surface current steel pipe flange cover

SH tube flange fasteners in the current 3404-1996

SH petrochemical steel pipe flange of the current 3406-1996

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