GB/T 12459  弯头 DN 100-Ⅱ-2.77180EL

DN 100-Ⅱ-2.77 180EL

LWN 500-300 RF Sch160

SO 8"-150 RF

WN 3/4"-300 RF Sch40

so20-6ffampampam6 RFRF0

SO 3/4"-150 RF

bl150-150rf-150t2061RF21=32500F b=fs2@RF@4 RchF@4

3 FM 800-1.0 δ0=h=50/6

жі•е…° WN400-300RF

wn50A-16RJ5l@4702