HG/T 20592  法兰 WN 500-25 RFb=221.5

WN500-25RFb=221.5

BL 3/4"-2500 RJ

3 M 1600-2.5 δ

PL 700-10 FF°wn150F.9 h

NPTSO100-150 RF/

BL 40-150 RFmpah40 R

wn50(b)-300 rf sch40/п╟п÷п╒п┴п╟б▒я┌б┬б я┌б√б▓п╟п÷п╒п┴1.6 76п╠б▐я┌б■

PL 40