GB/T 12459  偏心异径管 DN 350×200-Ⅱ-6RE

DN 350×200-Ⅱ-6 RE

4 B527

WN 10"-1500 RF Sch40S

SO 300-150 RF

PL 80(B)-10 RF

DN1800/PN6/01B

BL450-600 RF n=pampwd=&aRf/@

3 A6

DN 200×50-Ⅱ-3 RC

DN80-PN63 PL M Ⅱ HF11h=150Ff�43RF79m600-1.6 RaF6R0S5ch5RFf50-3001F-300 RFRRF SCH40RF@0SRFF=12