GB/T 12459  弯头 DN 80-Sch10090ELf10crum.-16=1pFh40 H=1=

DN 80-Sch100 90ELf10crum.-16=1pFh40 H=1=

5 RF 1900-112B=38SCH40S-4erseFF=6 B

WN 20(B)-40 G1.S=95Fc-1.0Ft8Ff5SB)1.0hD/

WN RF 10K 80A Sch80 Sch400(B

TH 1/2"-600 RF NPSL= T=

WN 20-600 RJ Sch800SSfh80/@-1

PL500(B)-16 RFRF

3fm1600-1/5

WN 20-600 RJ Sc