HG/T 20615  法兰盖 BL 25-300 RF@wn10

BL 25-300 RF@wn10

PL80(B)-40 M0.8 H=3 RFRF80s=6592RF S=3-1.0/136-2hm-mps

B WN750-150 RF S=10 S=169.3b)-16g

WN 150-150 RF RF HG/FFF0-2.5 G6-130a-10

WN 300(A)-160 FMu/F Sch4

WN125(B)-16RFF16RFS=4RF S

WN150-150 RF Sch201J Sch120RF-50

BL500-16RF

WN 15(B)