HG/T 20592  法兰 PL 200(B)-6 RF b==61=60 Hf)-1 RquotHG

pl200(b)-6rf b==61=60 Hf)-1 RquotHG

pl65a-16 RFii.6F S=3MF=336.663 M S=3.

WN 300-150 RFo400-10rf0F0-3�F Sch40

WN 80(B)-25 RF. S=5.5

WN 40(B)-25 RF0sgml001 s=6f hg00-56010

WN 32(B)-10 RF50RF2-2

WN 80(B)-40Mp9 BL400(B)-10RF B=24s=5. RFFF-

WN50(B)-16