GB/T 12459  弯头 DN 400-Sch6090ELFSch40F Sch10s00mp

DN 400-Sch60 90ELFSch40F Sch10s00mp

BI30000rf/sF10pa0R8 RJfFkh

pl150(a)-10ffc=22S=6RF0j84-4283b8F0/chRF

47021 rf500-1.6 Г В№в

PL200-10 M/

SO25(B)-150 Fm6 gb/7/ch160 SCH10S SRF

SO 450-600 Fm

WN40(A)-40 RF SCH4w.hgcad1.6m/@

WN 200(B)-63 RF.6 δ