GB/T 12459  弯头 DN 15-Sch10S90ES

DN 15-Sch10S 90ES

WN 2"-1500 ST Sch401600

pl250(b)-10rf sf060

WN15(B)-160RF5f sch1FS=

BL500-16RF¦Ã‚Â�-16

DN80-PN63 WN RF S

BII 1000 h=300/n0

bL 600(B)-6 RFR/F150wd=&eqid=80ebfc4e000393/u0b=26RF2 scFs=3.53ampa

SO 50(B)-16 RFF0/b=3

BL200-