GB/T 12459  弯头 DN 50-Sch80S90ES

DN 50-Sch80S 90ES

bl150(b)-100 m

DN1000-PN6 PL RF

SO300(B)-25 RF

PL25(B)-16 RF 20

WN20(B)-100 FM S

DN80/PN16/05A

JWN 250×300(B)-16 RF

PJ/RJ 800(B)-16 RF

47023 FM800-2.5/80-1454δ0=12L6 RF S=6h4h7.85amh050-150 rf xx652-125506019 C=1530-16 B500 RJ Sch