HG/T 20615  法兰盖 BL 100-2500 RJ R=a

BL100-2500rj R=a

DN65/PN16/01B

WN1500-100 RF Sch40FFRFam@F.5 R7m.html FM S=50RF09.5

NB/T47021 M500-0.6

JWN80×50(A)-40 RF S=4

SO 40(B)-16 RFchâ´=RF

WN 900(A)-10 RF S=16

pl1400(b)-2.5 ffpampampa

SO 2"-150 RF

wn50(b)-150RF-4 RCMRFg160R8rf50 RFS5