ASTM A53
/glossary/astm-a53American standard for welded and seamless black and hot-dipped galvanized steel pipe.
In detail
ASTM A53/A53M is the American Society for Testing and Materials specification covering seamless and welded black and hot-dipped galvanized steel pipe in NPS 1/8 to NPS 26. It includes two grades (A and B) with Grade B offering higher tensile strength. The standard defines chemical composition, mechanical properties, and testing requirements for pressure and mechanical applications, and is widely referenced for export orders and cross-border projects in India.
Where you'll meet this in procurement
You will meet ASTM A53 when a buyer, consultant, or mill quote names a governing specification. Confirm which revision applies, what tests the standard requires, and whether the grade on the MTC actually matches the ASTM A53 call-out on the RFQ before you lock commercial terms.