GB/T 12459  偏心异径管 DN 400×350-12.7RE

DN 400×350-12.7 RE

A WN 42"-300 RF B=Sch40S

WN80B-16RF

5 CM 1800-0.2520Sch80S;amp;amp;a-1.0/48.60e0F2000.6-4.0

WN 300(B)-16 RF4-4

BL15-1500RF.50 RrfRF@443��FFRFam@F.5 R7.5

pl100-16ff-16FJ RFm s2-27.92pa/615 WN400

WN 80-1500 RF400

WN25(B)-40