GB/T 12459  弯头 DN 20-Sch3090ES

DN 20-Sch30 90ES

WN 20"-150 RF Sch40S

DN65-PN10 BL R

20615 WN25-600 RF Sch80

SO25-16RF

PL50(B)-16 RF-150 RFJ Sch40 TJ RFSCH40S rf@40@S5 RJrv

wn500-600rf sch80

SO50-16RF

DN100-PN10 WN RF i

DN100-PN10PL RF ⅡFa16RF00M2FF@P2@Fj@5@20δB)--6Fh40SJ00