The Black Bridge Pipe Clamps can be used in the welding of all kinds of materials such as carbon steel, stainless, duplex, super duplex, and titanium. Due to its design, the Black Bridge Clamp ensures that the clamping forces are evenly spread around the pipe to be welded. This is true for all pipe dimensions within the range of the BB Clamp. The adjusting screws have stainless steel bearings, thus reducing the risk of carbon contamination and corrosion. The arms are fabricated from steel which allows a clamping force to meet the requirements for all pipe dimensions within the range of the Clamp. The welding of pipe to pipe and pipe to fittings is easily performed with BB Clamp. Three sizes of clamp are available covering all pipe diameters between 1" - 14".