Technical Specifications
Manufacturing Standards
ASME/ANSI
ASME B16.34
Factory-Made Valves — Pressure-Temperature Ratings, Design, and Dimensions
API 600
Steel Gate Valves for Petroleum and Natural Gas Industries
API 602
Small-Bore Steel Gate Valves for Petroleum and Natural Gas Industries
API 608
Flanged Ball Valves for General Service
DIN
DIN EN 1988-2003
Industrial Valves — Flanged, Threaded, and Welded End Valves
DIN 3352
Steel Valves — Particular Requirements
DIN 3202
Butterfly Valves
GB
GB/T 12224
Steel Valves — General Requirements
GB/T 12234
Wedge Gate Valves for Petroleum, Petrochemical and Allied Industries
GB/T 12235
Steel Globe Valves and Lift Check Valves
Face-to-Face/End-to-End Dimensions
ASME/ANSI
ASME B16.10
Face-to-Face and End-to-End Dimensions of Valves
MSS SP-25
Standard Marking System for Valves, Fittings, Flanges, and Unions
DIN.
DIN EN 558-1
Industrial Valves — Face-to-Face and End-to-End Dimensions — Part 1: Standard Tables for Flanged Valves
DIN 3202 T5
Butterfly Valves — Face-to-Face Dimensions
GB.
GB/T 12221
End-to-End and Face-to-Face Dimensions of Valves
GB/T 15188.1
Face-to-Face Dimensions of Flanged Valves
Flange Standards.
ASME/ANSI.
ASME B16.5
Pipe Flanges and Flanged Fittings — NPS 1/2 to NPS 24
ASME B16.47
Large Diameter Steel Flanges (NPS 26 to NPS 60.
DIN.
DIN EN 1092-1
Flanges and Their Joints — Circular Flanges for Pipes, Valves, Fittings and Accessories, Classes PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100 and PN 160
DIN 2573-2576
Old Standard Flanges (Phased Out, Replaced by EN 1092.
GB.
GB/T 9112-9124
Steel Pipe Flanges
GB/T 13402
Large Diameter Steel Flanges
Audited Supplier 
){kind=link}