Carbon steel ball valve we can supply Carbon Steel Ball Valves carbon steel ball ... "~4" (DN6~DN100), have 1,2,3PC Carbon Steel ball valve as pictrues show2>Internal thread:NPT,BSPT,DIN2999,so.., WCB ... >Thread made by CNC machining tools4>Fit in "Water, Oil, Gas, Nitric acid, Acetic acid"5>Detail specifications(Nominal pressure, so ... web and your inquiry email. Cast steel ANSI & DIN ball valve