HG/T 20592  法兰盖 BL 100-16 RF K=89

BL100-16 RF K=89

3 M 1200-1.0 δ0=6

20615 BL500-150RFp28

LWN40-150RF H=349 B=0

BL15-63 RJ09 RF Su4

WN 150-900 RF

WN400-25RF Sch40 B=4

PL 150(B)-16 RF50 RF S sCg42.t

WN150-150RF B=1466RFMF6R025-D

SO 500-150 RFF S=14mpampamr0b)-B Sch80101fm5.1r-96 52