Chemical composition: Carbon, manganese, sulfur, phosphorus, and other elements.
Mechanical properties: Tensile strength, yield strength, elongation, and impact resistance.
Dimensions: Outside diameter, wall thickness, and length.
Tolerances: Permissible variations in dimensions.
Hydrostatic test pressure: To ensure pipe integrity.
Surface finish: Black, galvanized, or coated.
End finish: Plain, beveled, or threaded.
