GB/T 12459  同心异径管 DN 1100×10-Sch120RC0 δs=80 FM5аПт

DN 1100×10-Sch120 RC0 δs=80 FM5аПт

WN50B-100GAA3F100- C-6 rf cfn=5/68-160

AWN800-600 RF4 D=21

BL 600(B)-2.5 RF

so125-16RF Sc21RFJ00ampampampS=0RF

WN 300-150 RF

BL600-10TWN25-15 s=�´1=10 rf s=6159

WN500-150 RF Sch40=180-16rf S=88 s=3.5

DN65/