A513 Cold Roll Carbon Steel Round Tubing 2 in OD - Durable, Precise

Our review of the A513 Cold Roll Carbon Steel Round Tubing finds it best suited for fabricators and DIY mechanics who need a strong, consistent tube for structural or fluid-handling work. The single biggest reason to buy is its combination of cold rolled strength and a mandrel-drawn weld that produces a smoother bore and consistent wall thickness, making it reliable for applications like automotive A/C lines, shafts, and fuel-related projects. The tubing meets ASTM A513 standards, so buyers who prioritize predictable mechanical properties will appreciate its performance.

Key Features

• Material strength: The A513 steel formulation offers high strength and rigidity, which helps the tubing resist bending and hold tight tolerances under load.
• Cold rolled finish: Cold rolling increases yield strength and hardness compared with hot rolled alternatives, improving durability in demanding uses.
• Drawn over mandrel: The mandrel-drawn weld produces a smoother bore and more consistent wall thickness than non-drawn welded tubing, aiding fluid flow and machining.
• Application versatility: With a 2 in outside diameter and 0.12 in wall, the tube is well suited for automotive, HVAC, and general industrial uses like shafts and pins.
• Standards compliance: Meeting ASTM A513 gives assurance of manufacturing quality and dimensional consistency for engineered projects.

Who It's For

This tubing is aimed at professionals and hobbyists who need a reliable, strong tube for mechanical components, fuel and A/C lines, or structural projects. Customers working on vehicle repairs, custom fabrication, or small machinery parts will value the 1018 carbon steel characteristics for pins, rods, and shafts.

Those who need exceptionally high weldability or maximum ease of machining might consider alternate grades, since higher-carbon content can mean slightly lower machinability and weldability. Also, buyers requiring seamless tubing for specific metallurgical reasons should compare options before purchasing.

Pros & Cons

Pros

• Consistent wall thickness and smooth internal bore from the drawn-over-mandrel process.
• Good value and apparent steel quality for automotive and HVAC applications.
• Cold rolled finish provides extra yield strength and hardness for structural uses.

Cons

• Higher carbon content means slightly lower machinability and weldability compared with softer carbon steels.
• Some users report the inner diameter can be marginally smaller than expected, so check fit for precision inserts or seals.

Specifications

Standard	ASTM A513
Material	A513 cold roll carbon steel (1018-type)
Outside Diameter	2 in
Inside Diameter	1.76 in
Wall Thickness	0.12 in
Length	72 in

Our Verdict

The A513 Cold Roll Carbon Steel Round Tubing is a practical choice for fabricators and mechanics who need a durable, dimensionally consistent tube for automotive, HVAC, or light structural work. Its mandrel-drawn bore and cold rolled strength deliver good value and reliable performance, though buyers who need maximum weldability or exact inner bore tolerances should verify compatibility before ordering.

Frequently Asked Questions

Is this tubing suitable for automotive fuel lines?
Yes, customers report successful use in fuel tank and related applications, but verify inner diameter fits your fittings and seals.

Can it be welded and machined easily?
It can be welded and machined, but expect slightly lower machinability and weldability than lower-carbon steels; plan for appropriate welding procedures.

Does it meet industry standards?
Yes, the tubing meets ASTM A513 for welded and drawn cold roll tubing, providing consistent wall and dimensional quality.