GB flangeHG/T20592 (PL) flat welding flangeHG/T20592(SO) with neck flat welding flangeHG/T20592 (WN) with neck butt weldingHG/T20592 (SW) socket welding flangeHG/T20592 (TH) threaded flangeHG/T2592 (PJ/SE) butt welding ring loose sleeve steel pipe flangeHG/T20592 (BL) flange coverHG5010-58 (PL) flat welded flange
GB flangeHG/T20592 (PL) flat welding flangeHG/T20592(SO) with neck flat welding flangeHG/T20592 (WN) with neck butt weldingHG/T20592 (SW) socket welding flangeHG/T20592 (TH) threaded flangeHG/T2592 (PJ/SE) butt welding ring loose sleeve steel pipe flangeHG/T20592 (BL) flange coverHG5010-58 (PL) flat welded flange
