... JIS,DIN ,GB etc TeeThree is a pipe, pipe connecting piece. Also called pipe three or three pieces, three joints, ... steel, including some non-ferrous metal materials, such as copper, aluminum, titanium and other.B. Hot formingThree hot ... carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum, plastic, argon Ge Lek, PVC etc..2 ... T 695, SY / T 0510, DIN 2615. Three way pipe insulation