Standard: ASTM A106/A53Steel Grades: Grade A ,Grade B, Grade C.Size Range: OD:1/2â TO 24â. WT: 3mm To 45mmManufacturing Process : Hot Rolled / Hot Expansion/ Cold DrawnApplication:These pipes are used in the construction of boilers, piping systems and heating systems in chemical projects. A53 Pipes are intended for mechanical and pressure applications, as well as ordinary uses in steam,water, gas and airpan>Packing: External Black Painting ,Both Side With End Caps, In Bundles by Steel Strips,Covered by Waterproof