HG/T 20592  法兰盖 BL 80-6 FF40S235=41rf40 R

bl80-6ff40S235=41rf40 R

BL 25-16 RF

WN 3"-150 RF Sch40

PJ/SE 500(B)-16 FF

SO 50(B)-25 M

WN 500(B)-16 RF S=8pamp

WN150-150 RF Sch402 D=1

PL100(B)-16 RF

1 RF 500-0.6

DN100/PN40/11B S=2F14h=1e=chat.00 RFs=ch 未0(120=14 δ=120160 RF005=10-f/@ r0 LM