... PN6 to PN40,Class150 to 1500 3.Material:Carbon steel,stainless steel Carbon Steel Weld-neck Flange1), Name: WN flange2), ... 5, ASA, API-605,etc..slip-on, welding neck, blind, threaded, lap-joint, etc.Class150 ... 2632,2633, 2543, 2544, etcplate, slip-on, welding neck, blind, threaded etc.Class150,300,600,900,150041 ... PN16, PN25, PN40, etc.plate, slip-on, welding neck, blind, threaded etc.Class150,300,600,900 ...