HG/T 20592  法兰 WN 40(B)-63 RF S=≥3.56 δs=10

WN40B-63RF S=≥3.56 δs=10

PL500-16 FM225 R/ed=/c2/u008 n=134f sf-0r01.8-19050RF

WN50-600 RFff b/4545

BL20-25RF.6508g1ampampampampS=15RF/0.-1

BL100(B)-16 RFRF0fFH5R 5

WN 80-150 RF.601145S=8cmpa/

SO 600-150 RF1R

PJ/SE 80(B)-16 RF

SO80-150 RF B0 r

so