... -on, lap-joint, blind, socket welding and threaded flanges 2) Size: 1/2 1) Type: Welding neck, slip-on, lap-joint, blind ... welding and threaded flange.2) Size: 1/2 - 78"3) Standard: GB, ASME, ANSI, JIS, and DIN4) Material: stainless steel such as 304/304L ... /316/316L/316Ti/321; forgeed steel,carbon ...