GB/T 12459  弯头 DN 65-Ⅱ-690EL

DN65-Ⅱ-6 90EL

WN 100(B)-16 RF S=≥3

bl80-16m c=5/ na0.

so15(a)-6mF S200 G.620.-1

PL 150(B)-16 RF.6 Г В

WN175-25RFRJ RJJ00FMfch40sp-

SW 40-600 RFาชF10rf671@ะ’ยฐFRF2=0R5 RJB�”

WN400-300 RF B=374.4 RF

BL 250-16 RFM5S=4.6mp_f

WN