HG/T 20592  法兰盖 BL 500-40 FF/-1.F0RJ 40=21

BL500-40 FF/-1.F0RJ 40=21

PL 65(A)-16 RFRF=12250 RF SchFfs0

BI 3800（F/

WN 2"-300 RF B=49.22

SO 40(A)-25 ML(b)-10-540S

TH 2"-150 RF200900 RF Sch40S18-25rf=43 rfmf/55/0 RF3.5-10RF0-15CHO

1 FM 650-1.0(A).p16ch400Sc-11.6.

WN80(B)-16 RF16