GB/T 12459  弯头 DN 80-690ES00RF S=1

DN 80-6 90ES00RF S=1

BL 80-300 RF

SO 250-16 RFS1=2010000R

Bl80-150rf-150rfomF/@b@140160))-0 RFM@sRFS4rfS10SFFB3h10S 90ESrfRh8040@900 RJ

WN 400-150 RF

WN20-160 Tl250(a/3

BL 10-6 RF1h80RFC800-165

DN 1050×1050×50-Sch120 TR�

WN50(A-16 RF/u00c2/u00aFc