GB/T 12459  偏心异径管 DN 250-Sch140REDUCER aa

DN250-Sch140 REDUCER aa

20592 BL50-16 RFRF

PL 125(A)-16 RF RF530r

WN 16"-150 RF S=16.6

wn80-150rf sch40 h�┐

wn250a-63m1Ã/@A BL1002@R0-10ampa

PL32-10 RFп2.7RF08/&

PL500(B)-6 RF-6 RFRFRF5 RF605 RFRF0

WN65(A)-10 RF S=3.2=7707

A WN28"-15