HG/T 20592  法兰盖 BL 32-40 RF6h146 RFRFSJ150=120S=1

BL32-40RF6h146 RFRFSJ150=120S=1

PL 50(B)-16 RF1250.25

BL400(B)-16 RF2=6520RF6t8h40rfF h2

WN40-150 RFF S=8=97

wn50-600 RF/S0.66ch-115e)-16R SC7023

bl150-600RF Sch40/HF0ES δ0=60 r150

BL 150(B)-100 RF00 RF SB)-4100

BL100-16 RF FMRF800RJ scSFS=8)-6 RR5