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SunnySteel Tubing produces round carbon and alloy electric resistance welded (ERW) mechanical tubing to ASTM specifications A513 Type1A (hot rolled), Type 1B (pickled & oiled) and Type 2 (cold rolled). Produced in sizes ranging from 1.05 inch OD up to 12.75 inch OD and in nominal wall thicknesses beginning at 18 gauge (0.049") and heavier, ASTM A513 tubing is used in a variety of industrial, agricultural, and transportation related end uses. For a complete listing of sizes produced, please visit our Steel Tubing Product Catalog.

ASTM A513 Type 1A & 1B
ASTM A513 Type 1A mechanical tubing is produced from hot rolled strip steel while A513 Type 1B tubing is produced from hot rolled strip steel that has been pickled to remove scale then oiled to provide a cleaner surface than hot rolled. A513 Type 1 tubing provides more specific tolerances for OD, wall thickness, length and straightness tolerances than pipe and structural tubing specifications. It is often is used in applications where bending, flanging, flaring or flattening is required.
ASTM A513 Type 2
ASTM A513 Type 2 is produced from hot rolled strip steel that has been cold reduced. Due to the extra cold working at the steel mills, A513 Type 2 tubing will have tighter wall thickness tolerances, improved surface condition and a more narrow range of mechanical properties than A513 Type 1. A513 Type 2 tubing is used in a variety of applications where surface condition is critical and where further polishing or plating of the tubing is required. The maximum wall thickness for cold rolled tubing is 0.120" nominal.
Tubing produced to the A513 specification also provide improved ductility with its closely controlled carbon steel grades.

1.1 This specification covers electric-resistance-welded carbon and alloy steel tubing for use as mechanical tubing.
1.2 This specification covers mechanical tubing made from hot- or cld-rolled steel.
1.3 This specification covers round, square, rectangular, and special shape tubing.

Size Range(Round Tubing)
Electric-Resistance-Welded Tubing from Hot-Rolled Steel outside diameter from 3/4 to 15 in.(19.0 to 38.1mm)
wall from 0.065 to 0.650 in.(1.65 to 16.50mm)
Electric-Resistance-Welded Tubing from cold-Rolled Steel outside diameter form 3/8 to 8 in.(9.52 to 203.2mm)
wall from 0.028 to 0.134 in.(0.71 to 3.40mm)

1.4 Optional supplementary requirements are provided and when desired, shall be so stated in inch-pound units are to be refarded as the standard.
1.5 The values stated in inch-pund units are to be regarded as the standard.

Chemical Requirements
Grade Designation Chemical Composition Limits, %
Carbon Manganese Phosphorus, max Sulfur, max
1010 0.05-0.15 0.30-0.60 0.035 0.035
1015 0.10-0.20 0.30-0.60 0.035 0.035
1020 0.15-0.25 0.30-0.60 0.035 0.035
1026 0.22-0.28 0.60-0.90 0.035 0.035


About Sunny Steel

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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