HG/T 20592  法兰 PL 400(B)-10 FF cf2=3

pl400(b)-10 ff cf2=3

WN50-160 m/36sch80c/

WN 80-150 RF Sch40S-6 RFf@40���wnH00 Rm

WN 4"-150 RF0EL.0c-1sf

bl200-100rf8 RF f1=

WN100-2500 RJ B=82.3

WN 150-300 RF Sch400RF S=8"�؟½h80s RF80@40@

LWN 500-300 RF B=153b

PL32()-16 RF RFF0