Model No: Z61Y

Basic standar

Design standard: JB/T 7746, API602

Face to face: JB/T 7746, API 602;

Thread / Weld standard: JB/T 1751 / GB 7306; ANSI B16.11 / B 2.1

Test standard: JB/T 9092, API 598

Pressure & temperature standard: GB/T 9131, MSS SP 25