GB/T 12459  弯头 DN 200-3.590EL8F RF5-RF sch1/ RF

DN 200-3.5 90EL8F RF5-RF sch1/ RF

3 RF 500-1.6

wn500-16rfs12Rpamp0(00@407.5 RJRF=T Sch16050R(1000Sh80S SF@S7Rpamp40

SO 6"-300 RF

nb/t47021 fm600-1.6

WN 50(B)-16 RF S=5

BL300-40 RF1h08a SCH140Mpa

WN25-40 RF S=/i2500m

WN 14"-300 RF Sch40

LWN5