ASTM A53 Grade A & B
ASTM A53 Grade A & B Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
This specification2 covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1⁄8 to NPS 26 [DN 6 to DN 650] (Note 1), inclusive, with nominal wall thickness. It shall be permissible to furnish pipe having other dimensions provided that such pipe complies with all other requirements of this specification.
Chemical Requirement
Chemical composition — Cast analysis for product thickness ≤ 40 mm
A The total composition for these five elements shall not exceed 1.00 %.
Tensile Requirement
Permissible Variations in Weight (Mass) and Dimensions
Weight (Mass)—The weight (mass) of the pipe shall not vary more than 6 10 % from its specified weight (mass), as derived by multiplying its measured length by its specified weight (mass) per unit length.
Diameter— For pipe NPS 11⁄2 [DN 40] or smaller, the outside diameter at any point shall not vary more than 6 1⁄64 in. [0.4 mm] from the specified outside diameter. For pipe NPS 2 [DN 50] or larger, the outside diameter shall not vary more than 6 1 % from the specified outside diameter.
Thickness—The minimum wall thickness at any point shall be not more than 12.5 % under the specified wall thickness. The minimum wall thickness on inspection shall conform to the requirements given below
Minimum Permissible Wall Thicknesses on Inspection for Pipe Specified Wall Thicknesses
