GB/T 12459  弯头 DN 100-Sch4090EL

DN100-Sch40 90EL

PJ/SE 50(A)-10 RF

WN100-300 RF B=96

SO450(A)-16 RF&ampampampam

WN50(B)-16 RF09h400-1300

3 FM 700-1.6 δ0=13

PL150(B)-16 RF B=174F0

DN 25-Ⅱ-4 90ES6w0-1.6/38-wn100-13030F Sch402310RF=60�5-1H40ch406

WN100-150RF3=5

JSO 25×50-300