HG/T 20592  法兰 WN 250(B)-16 RF S=81

WN250(B)-16RF S=81

PL150(A)-25 RF b=80SfuF

PL65(B)-10RF b=/6 RF

SO40-900RJ1pamphampampam

PL600-10FFRF0-14FB)scf1=1.

BWN 700-300 RF S=12 B=6780 RF S

wn 250(B)-63 M C=42 S=10/8=12/RF0WN30T C

wn1200-16ff b=24=3 RF260 RFS600

SW65-300 RF50M S=900p10SFF