... scaffolding pipe4011/2''48 1.94.0 0.157 scaffolding frameworkTOLERANCE:a)On specified OD+/-0.5(Ovality0.5mm):b)The Inside ... :a)Chemical (Maximum) C - 0.20%, Si - 0.03%, MN - 0.67%, P - 0.045%, S - 0.045%, AL - Min. 0.02%.:b)Mechanical = UTS - ... transportation, such as water, oil, gas,…etc.:b)Fabrication of steel manufacture, Greenhouse, Scaffolding tube, Furniture making,Fencing.PLACE OF ORIGINCHINA ...