U-bolts have been used basically to support pipework, pipes through which fluids and gasses pass.As U-bolts are now being used by a much wider audience to clamp any kind of tubing/round bar, then a more convenient measurement system needs to be used. Available in MS and SS material. Size: Upto 20mm Quantity Per Pack: 50 kg Material: Mild steel Bolt Diameter: Upto 20mm Shape: U Shape Pack Type: Bag