Design: API 6D/ANSI B16.34
Face to face(flange end): API 6D/ANSI B16.10
Face to face(weld end): API 6D/ANSI B16.10
Flange connection dimension: ANSI B16.5; JIS B2238;JB79;GB9113
BW end dimension: ANSI B16.25
Inspection & test: API 6D/API59;JB9092
DN: 1/2" to 10"
Class : 150LB to 600LB