GB/T 12459  弯头 DN 300-Sch1090EL

DN 300-Sch10 90EL

LF/SE 100-150 RF

WN 150-600 RF S=11

TPB-2

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WN80(B)-16 RF

WN4-300 RFS00bf/u0

WN 25(b)-16RF S=≥3

wn 80-300 RF

BL 600-150 RF0 RF Sch1604-�§ï=3 S=22.5f b=20\u00c3\u008ww=F RFch4010FH40S0rfm.RF �l65(b)F