Choosing the Right Capacity C Hook for Your Overhead Crane

Choose C hook capacity by sizing to your heaviest coil first, then checking that the hook's dead weight still leaves your crane enough net lifting capacity — a hook rated for the right tonnage on paper can still leave you short at the crane hook block.

Start with your heaviest coil

C hooks are manufactured from 2-tonne service centre units to 70-tonne primary steel producer hooks. Size to the maximum coil weight you will ever lift, not the average — undersizing here is the most common selection mistake. Our C hook types and selection guide covers the variants behind these capacities.

Checklist for C hook capacity selection

• Confirm your maximum coil weight, including any occasional heavier coils outside your typical product mix.
• Check the hook's own dead weight against your crane's rated capacity. A heavier C hook subtracts more from the crane's net lifting capacity — two hooks with the same SWL can differ in how much crane capacity they leave for the coil itself.
• Match coil ID, OD, and width to the hook's throat and arm geometry. The hook arm must clear the coil OD, and the throat must accommodate the coil width; a single hook can be designed to span your full min/max range by adjusting throat width and arm curvature.
• Decide whether you need a counterweight. A counterweight keeps an empty hook near-vertical — without it, an unloaded hook tilts toward the point and can snag during positioning. This matters most in high-throughput lines where the hook cycles empty frequently.
• Consider a container load hook for export dispatch. These are heavy-duty, wider-throat, higher-SWL hooks built specifically for loading large-bore coils into ISO containers, usually paired with a wireless remote for positioning where the operator can't see the load directly.
• Confirm the standard. C hooks should meet ANSI/ASME B30.20 (or IS 3815 / EN 13157 for SWL and safety factor), with a minimum safety factor of 4:1.
• Get a proof load test certificate. Every hook should ship with a test certificate, SWL marking, and as-built drawing, with proof load testing typically at 125% of rated SWL.

Material matters as much as capacity

Standard construction is IS 2062 E350 structural steel plate, or high-tensile alloy steel. Above 400°C operating temperature, heat-resistant alloy steel is required. For outdoor yards, hot-dip galvanising protects against corrosion; for export or maritime environments, an epoxy-polyurethane paint system is the appropriate finish. Choosing capacity without matching material and finish to your operating environment is a common gap.

When to bring in an engineering team

If your coil dimensions vary widely, if you're mixing hot and cold coil handling on the same hook, or if you're specifying a hook for export dispatch, bring in an engineering team to review the full spec — coil range, crane type, environment, and duty cycle together — rather than selecting on capacity alone.

Availability in India

Designed and built at Pragya's Pithampur (Indore) works and supplied to rolling mills, service centres, and steel plants across India. Equipment is fabricated to the relevant IS standards, delivered by road to your plant, and installed and commissioned on site by our own engineers, who also train your operators.