ASME SA53 grade A steel is equivalent to ASTM A53 grade A steel. SA53 grade A is also shorten as SA53 Gr A and SA53A. ASME SA53 grade A pipe covers 3 types: Type E - Electric-resistance welded pipe / ERW pipe; Type F - Furnace-butt welded, continuous welded pipe; Type S - Seamless pipe. When the ASME SA53 type S pipe is required for close coiling or cold bending, ASME SA53 grade A pipe SA53 Gr A seamless steel tube is preferred rather than SA53 grade B seamless pipe.

ASME SA53 grade A pipe SA53 Gr A seamless steel tube chemical composition:

ASME SA53 grade A pipe SA53 Gr A seamless steel tube mechanical properties:

ASME SA53 grade A pipe SA53 Gr A seamless steel tube shall be made by one or more of the processes: open-hearth, electric-furace, or basic-oxygen. ASME SA53 grade A pipe can be seamless and welded black and hot-dipped galvanized steel pipe.

ASME SA53 grade A pipe is intended for mechanical and pressure applications. ASME SA53 grade A pipe SA53 Gr A seamless steel tube is also acceptable for ordinary uses in steam, water, gas, and air lines.