GB/T 12459  弯头 DN 350-590ES

DN 350-Ⅰ-5 90ES

PL150-16rf0F00/ RF B=305-2e2/

PL 150(B)-2.5 RFp60-RF700-1.6RFF10f f911

2 CRF 800-1.60SRF S/H=4 c=2

WN 6"-2500 RJ

WN 32-150 RF Sch160/Fcmpquo

WN 50(B)-16 RF S=51000-1513

nb/t47023 fm550-4.0/52-120 s=10 �

WN