Product description
Surface treatment: epoxy polyester paint and nylon 11
Design: GB or T12238-1898
Valve structure length: GB or T12221-1989
Valve flange connect: GB9113-2003
Valve testing: GB or T13927-1992
Valve symbol: GB 12220-1989
Device drivers connect: GB 12223-1989
ND: 50 to 1,200mm
Flange standard: ISO 7005-21988
Maximum working pressure: 1.6Mpa