1/4" to 4"
150, 300, 600,
900, 1200,
1500, 2500
Slipon, Blind, Weldneck, Socket-weld,Lap-joint, Spectacles, Weld-neck Ring Joint, Orific, Long Weld Neck, Disk Flanges,Tongue flange, Groov Flange,Din Standard, Flangeo-let, etc.
ANSI B 16.5
ASTM A182 F1/F5/F9/F11/F22/F91,etc.