... S0 - 22% (minimum).FLATTENING TEST WELD AT 90 DEGREES (COLD)a)For weld : Distance between the platens, measured under ... , gas,…etc.:b)Fabrication of steel manufacture, Greenhouse, Scaffolding tube, Furniture making,Fencing.PLACE OF ORIGINCHINA,TIANJINTARGET MARKETBrazil ,Malaysia, ... field of black pipe(carbon steel welded pipe)& white tube(galvanized steel pipe)-Tianjin Rongxin Steel Co.,ltd.,locating ...