HG/T 20592  法兰 PL 32(B)-40 RFm482F B=41=

PL 32(B)-40 RFm482F B=41=

BL 10-63 M 385RFu8R 9/f.520F28ampaO.6 RF6/31sch80SFF500-

SO 100(B)-16 RF

SO 1 1/2"-150 RF

BL 350-150 RF h=100=42

wn20(B)-300 rj S=15ampampampampampampamp F150 RF Sch40&-100RF150/FT20615

wn250-300 rf h1 Bu0FS=3.0S S=50