GB/T 12459  弯头 DN 40-5.590EL

DN 40-5.5 90EL

Wn-100)-16rf

BII 2800-S h=2F150

WN 200(B)-160 M S=6

PL 50(B)-16 FF

SO300(a)-150RFc

DN200-PN40 WN M S=6

SP-13

WN 50-300 RF S=5.6565F

BL 80-16 RF500F0rj-1.0 RF5M R0f1216RF610*32=0S=5.6565F D20�0=10 rfgS RJRF RF Sc4F-RJR64๏ฟฝdat4F