GB/T 12459  同心异径管 DN 750×10-Sch30RC��0RFS

DN 750×10-Sch30 RC��0RFS

WN 50(B)-16 RF S=4

DN125-PN6 PL RF в…Ў

WN500B-16RF

SO150-150 RF

5 M 1000-1.6 δ0=8

PL150B-16RF

SO150-16 RF0-4.80思5/

AXB-5

WN 50(B)-25 RF S=5��� RF8 sch40 S=6 RF67.5 RJ R�as650-150 RF0 RF(720rf013 FM20/=&a