HG/T 20615  法兰盖 BL 100 -300 RF C=10

BL100 -300 RF C=10

PL 300(B)-6 RF=F�’В©Р0F.5 RJ-RF�pampam0-2.5

WN600-150 RF Sch40

1 RF 500-0.6 δs=20

BI 900

WN 400(B)-10 RF

WN 150-150 RF Sch10S

BL700-10 RF

PL38-10RFF

BL 350-25 RFEL0S3D S=8F�B/4T SF Sch10SBL200-63 RFpampampampampamp05928