HG/T 20592  法兰盖 BL 200-10 RF= RF0620Б■00=2�´1=1

BL200-10RF= RF0620Б■00=2�´1=1

BL80-150Ffh40S6=13500rrff s=10/RF Sch40Sn1

LWN25-300 RF Sch40 H=130016RF16F

WN15(B)-100RF00S SScBS

WN25-300 fm b=2

PL 300(B)-10 RF2n=6 L=15ch14.54-195mF00-m

BL 400-6 RF10 RF25RF05)2.

wn250(b)-16 rf

wn150b-63fm1004�