Carbon Steel Butt-Weld Pipe Fittings The Carbon Steel Butt-Weld Fittings Can Be Divided Into ANSI B16.9/B16.11/B16.28, DIN2605-2642, JIS, ISO Etc. Standards, With The Wall Thickness In SCH10, SCH20, SCH30, STD, SCH40, SCH80 Etc, And The Specificati ...Read More