heavy duty clamps

Listings show a mix of plastics and metals: steel and steel alloys (including Q235), cast iron, spring steel, and generic metal. Many items also use corrosion-resistant finishes such as galvanized or zinc-plated coatings.

Capacities vary widely by product type. Small hardware (e.g., wire‑rope clips) can be around 26 lb, bench vises may reach about 19 kN, bar clamps in these listings range from roughly 1,450 lb to 4,880 lb, and clamp‑on debris forks are shown around 2,600–4,560 lb. Use the listed rating for each model when selecting a clamp.

Handle styles include soft two‑component anti‑slip grips for one‑hand operation, forged‑steel and wooden sliding T handles for larger bar clamps, and textured metal handles—offering choices for comfort, leverage, and control.

Protective jaw features include pivoting or swiveling jaws and swivel‑type jaw pads that conform to the workpiece, distributing pressure and reducing surface marring.

Several listings note automated (auto) welding and auto‑welded joints, with reinforced joints called out to improve strength and resist fracture under heavy use.

Mounting methods include quick clamp‑on designs, clamp‑on screws with reinforcing pipe sleeves for bucket edges, and beam or flange clamps for mounting to beams (examples cited for flange thicknesses up to about 3/4" in listings).

Weights vary widely by type: examples range from about 0.3 lb for small hardware up to roughly 88.4 lb for large clamp‑on attachments. Other listed weights include roughly 5 lb, 8.81 lb, 12.4 lb, 22.95 lb, 26.3 lb, and 75 lb—check each product listing for exact weight.