HG/T 20592  法兰盖 BL 25-100 RF0�5-Ⅱ-4 CRR DR

BL 25-100 RF0�5-Ⅱ-4 CRR DR

SO 8"-150 RFأ¯

WN200-300 RFmS=25 R

SO 25(B)-10 RF0 RF B=Sch40SF RF5Rc99RF.8Srf 1JsRF@F00FFRFS SC16 RF

WN 600(B)-16 RF S=10

BII 570 d=4820615-200

bl65-40RFmp-150 RFSCH40S

WN 25-300 RF6rf0(B)-0-150r50 R

WN 200-150