... :ANSI, B 18 2.2 hex thin nut 2.Material:Stainless steel A2-70 3.Finsh:zinc,black,chrome,nickel 4.Thickness ... caps from D25mm to D820mm 4, Pipe fitting made of steel plate from D630mm to D3320mm 5, Socket welding pipe fittings ... factory located in Xin'gang Avenue, Xinzheng Airport, Zhengzhou, Henan,China,with many years experiences in pipe fittings.We have advanced technicians ...