HG/T 20592  法兰盖 BL 100-6 RF�7-305M-6006/70-1ruam05J S=pquotHG20615

bl100-6 rf�7-305M-6006/70-1ruam05J S=pquotHG20615

WN 40(A)-16 RF S=4 A=4

BL 500-25 MR/L=19.1 K=127 f1=1

WN 100-150 RFFFâhc6/u0092/u0

3 G 500-1.0R5.0/1=65/1�0.4-16 RF16RF8Sch

pl15-10rf b0rjtp

WN25(B)-25 FM S=≥6/40SF S/ hg-30 F8 P00-p6

WN 1&qu