ASTM A53 is a standard specification for pipe, steel, black and hot-dipped, zinc-coated, welded and seamless. 

This standard is issued under the fixed designation A53/A53M; 
the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

Here are some key details about ASTM A53 galvanized tubing:

Types and Grades:

Type E: Electric-resistance welded (ERW) pipe.
Type S: Seamless pipe.
Type F: Furnace-butt welded pipe (continuous welded).
Grade A and Grade B: These grades denote the strength and mechanical properties of the pipe, with Grade B having higher yield and tensile strength than Grade A.

Coating:

The tubing can be either black (uncoated) or hot-dip galvanized. Galvanized tubing has a protective layer of zinc to prevent corrosion.

Sizes:

The specification covers nominal (standard) sizes from 1/8 inch to 26 inches in diameter.

Applications:

ASTM A53 galvanized tubing is intended for mechanical and pressure applications and is also suitable for ordinary uses
in steam, water, gas, and air lines. It is also commonly used in structural applications and as columns, posts, and railings.

Mechanical Properties:

The minimum yield strength and tensile strength vary by grade and type. For example:
Grade A: Minimum yield strength of 30,000 psi (205 MPa) and minimum tensile strength of 48,000 psi (330 MPa).
Grade B: Minimum yield strength of 35,000 psi (240 MPa) and minimum tensile strength of 60,000 psi (415 MPa).

Testing:

Pipes under ASTM A53 must undergo a series of tests to ensure they meet the required specifications, including:
Tensile tests
Bending tests
Flattening tests
Hydrostatic tests to ensure no leaks.

Marking:

Pipes manufactured to ASTM A53 must be marked with the manufacturer’s name or brand, the specification designation (ASTM A53), the type, grade, and the hydrostatic test pressure.

End Finishes:
The ends of pipes can be furnished plain end, beveled, threaded, and coupled.
In summary, ASTM A53 galvanized tubing is a versatile and widely used standard for steel pipes, suitable for a variety of mechanical and pressure applications due to its durability, strength, and corrosion resistance.

Here are some of the most popular production standards:

When it comes to galvanized tubing, there are several production standards that are widely recognized and adhered to ensure quality, durability, and safety. 
Standards ensure that galvanized tubing meets specific criteria for thickness, adhesion, appearance, and performance, making them suitable for various industrial, commercial, and residential applications.

ASTM A53: This standard specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1/8 to NPS 26. It is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas, and air lines.

ASTM A123: This specification covers the requirements for zinc (hot-dip galvanized) coatings on iron and steel products made from rolled, pressed, and forged shapes, castings, plates, bars, and strips.

ASTM A153: This standard covers zinc coating (hot-dip) on iron and steel hardware. This specification is primarily for products like bolts and fasteners but is also applicable to small iron and steel articles.

BS 1387: A British Standard specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads.

EN 10255: This European standard covers non-alloy steel tubes suitable for welding and threading and provides technical delivery conditions.

ISO 1461: This International Organization for Standardization (ISO) specification covers hot-dip galvanized coatings on fabricated iron and steel articles, including the thickness and quality of the coating.

JIS G3442: A Japanese Industrial Standard for galvanized steel pipes for ordinary piping.

CSA G164: A Canadian Standards Association specification for hot-dip galvanizing of irregularly shaped articles.

DIN 2444: A German standard for hot-dip galvanized steel tubes for construction purposes.

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