GB/T 12459  同心异径管 DN 300×200-Ⅱ-4.5RC

DN 300×200-Ⅱ-4.5 RC

pl350(B)-25 RF0GRF/

BL600-25 RFFF 2025ch0WNbs RF/uf@pam0Mch/@min-console8@Sc�RF210 RF.00 RF Sch4

wn25-160rf-sch160 S=2.7765

SO250-150FFD=2840F,=1RF

SO 65(B)-16 RF

SO 50(B)-25 RF 0=n55=10-690

SO300-16rf4fF S=Jm11

wn65-40 rf

SO