Features:

1) Design:Design Features: Wafer type, Lug type, Flange type, Double offset, Triple offset
2) GB, ANSI, DIN, BS and JIS standards and non-standard
3) We are certificated with DNV, CE and API
4) Connect: flange, screw, welding 
5) Types: handle, handwheel, gas, electrical, hydraulic

Standard:

Design:GB/T 122387-89

Flange connection dimension: GB9113-2000,GB17241.6-1998

Face to face: GB12221-89

Inspection and test: GB/T 13927-92