GB/T 12459  同心异径管 DN 300×200-6.35RC

DN 300×200-6.35 RC

WN100B-100 RF S=10

SO 100(B)-10 RF5R-5b0M300S1.0RF

SO200(B)-16 RFFsRF1-1f19

WN 50-150 RF/80FM

wn300-300 rf k1 RF1

SO500(B)-40 RF)-F5J0RF

WN20-150 RF Sh1603 rf1

WN200-600 RF SCH40982sF-

SO 4"-150 RF RF B-2-5h80pa5-10616006rf-0