HG/T 20592  法兰盖 BL 350-25 G´=58

BL350-25G´=58

bi8506 s=12.5 ffSCH80Is=8592-2 B001690Sch1rb)-16

so 15-300 rf hS=2S6 RF-(B)-14.0195rfampampampquothg

wn65-150 rf s=4-22=40/3 n==60

wn20-100tm402020080s20615B)-16RFF.500-

BL 40-300 TпҝҪ/S=2.

lWN25-1500RF-150rf024-60FRF8

PL 40(A)-10