HG/T 20592  法兰盖 BL 400-16 RF C=30

BL400-16RF C=30

PL 350(B)-10 RF

WN 50(B)-25 RF S=4

WN50-300 FF H1=10 C=21/m

PL 200(B)-10 M

DN 40×40×40-Sch10S TRmp

WN 500(B)-16 RF

SO 80-300 RF

BI 1600

B BL 700-150 RFF Sch40S�¯F6nal_source=chatt b=34000 RJ Sch40 ذch40RFM0&a/ML100(B)-16chLM016p@