... produce according draw good quality durable Flanges of welding neck, socket welding, threaded, blind, slip on, lap joint ... with MSS SP 44 standard.Flanges with long welding neck are from classes 150 to 2500 ... in accordance with BS10 Table D & Table E, BS Table F & Table H, BS Table J & Table K.Flanges from 2kg ... UNI,AS2129,GOST-128202. Type:Plate,Slip-on,Welding Neck.Thread,Socket weld,Blind3. Size:1/2 ...