Chemical pneumatic valve flange standard chemical standards

chemical pneumatic valve flange standard chemical
chemical pneumatic valve standard description:
chemical pneumatic valve pneumatic valves with gb standard difference is not big, mainly lies in the difference on the surface of the flange, chemical pneumatic valve flange surface is mainly divided into: GuanPing welding flange, with neck flange, butt welding flange, flange, socket flange ring, and blind flange, etc. The pipe flange on international standard, there are two main system is represented by Germany DIN European tube flange system and represented by the United States ANSI flange pipe flange system of America. Besides, there are Japan JIS flange, but generally only used in petrochemical unit for the utilities, and less affected in the world.
chemical pneumatic valve flange standard:


chemical flange standard number chemical standard name
HGJ ~ HGJ - steel flange ( The chemical engineering construction technical specification)
HG ~ HG - steel flange ( Chemical standards; The European system)
HG ~ HG - steel flange ( Chemical standards; The European system)
SH - petrochemical enterprises pipe flange
ANSI B. - pipe flanges and flanged fittings
ANSI B.
- butt welding end MSS - SP -
the API - large diameter steel pipe flange carbon steel flange
~ GB GB/T -
flange standard GB/T. ~ GB / T。 - the overall steel pipe flange
GB/T. ~。 The overall steel pipe flange ( Plane)
GB / T。 ~。 The overall steel pipe flange ( Convex)
GB / T。 ~。 The overall steel pipe flange ( Concave and convex surface)
GB / T。 ~。 The overall steel pipe flange ( Grooved surface)
GB / T。 ~。 The overall steel pipe flange ( Ring joint)
GB / T。 ~。 吗? D flat butt welding steel pipe flange
the GB/T. ~。 （ Plane) Butt welding steel pipe flange
the GB/T. ~。 （ Convex) Butt welding steel pipe flange
the GB/T. ~。 （ Concave and convex surface) Butt welding steel pipe flange
the GB/T. ~ ( Grooved surface) Butt welding steel pipe flange
the GB/T. ~。 （ Ring joint) Butt welding steel pipe flange
GB/T - large diameter steel pipe flange
JB/T. ~。 - integral cast steel pipe flange
JB/T. Convex integral cast steel pipe flange
JB/T. Concave and convex surface integral cast steel pipe flange
JB/T. Grooved surface integral cast steel pipe flange
JB/T. RTJ integral cast steel pipe flange
JB/T. ~ JB / T。 - welded steel pipe flange
JB/T. Convex butt welding steel pipe flange
JB/T. Bump in the face of welded steel pipe flange
JB/T. Tenon groove in the face of welded steel pipe flange
JB/T. RTJ butt welding steel pipe flange
JB - flange sealing surface type
JB - cast iron flanges

JB - cast steel flange JB - cast iron thread flange
JB - welded steel flange