Product description
Manufacture standard: GB/T9112-9124, HJ20592-20635, SH3406, ANSIB16.5 ,JISB2220. Type of flange:(PL)Plate-type Flat Welding Flange, (SO)Slip-on Neck Flange, (WN)Butt Welding Neck Flange, (SW) Socket Welding Flange, (TH) Thread Flange, (PJ/SE) Butt We