HG/T 20592  法兰盖 BL 100-16 RF-63RF4(b)-2F-3003

BL100-16RF-63RF4(b)-2F-3003

DN200-PN6 PL RF Ⅱ

WN 40(B)-100 RF

WN 20(B)-25 M S=5

SO 250(B)-16 RF

PL100(B)-16 RF

WN25(B)-40FM S=3.5 SRF@4416

PL 600(B)-16 RF

PL 250(B)-16 RF

SO 2"-600 RF FFM0 M-1671@� RFJsRF@H@RH5 RJ/ RFJ2@RF@4430Sf2c0340S1040S