GB/T 12459  弯头 DN 300-Ⅱ-690EL

DN 300-Ⅱ-6 90EL

SO100B-25G6 FM4-δ=53FRҝ

PL 600(B)-10 FFO 80(A

PL 100(B)-25 RF-16

WN 65(B)-40RF0 M/18F00-2.20S16

WN 80-100 RF02-20097950(b)86620-0-2.5/

PL 50-10FF0 LG65-1sh40S0 FM S

SO150-16 RF

WN40(A)-40RF01fSch

DN40/PN40/130-40RF/52B.pn0S02.5 d0