Takaitaccen Bayani:

Cikakken Welded Ball Valve Specific Design Standard: Design API6D, ASME B16.34 Gwajin API598 Kewayon samfuran: Girman 2″ ~ 48″ (DN50 ~ DN1200) Rating 150LB ~ 1500LB Kayan Jiki Carbon Karfe, Bakin Karfe Gyara A1010+Pr, EN ,F316