HG/T 20592  法兰盖 BL 125-16 RF00091501Sc

BL 125-16 RF00091501Sc

BL250-25RF020615

2 M 700-0.620δ1=8

法兰盖BL350-150 RF0=20sF5 RF S=6ampampquothg2061

WN 20(B)-63 RF S=4-Sch30 TRF Sch40B

WN 50(B)-100 M S=3=100 rf b=760/5RF20592-F

PL 80(B)-10 FF C=13

WN120(B)-16 RF/63 G RF FM S=4.5

bl80-63