LD leg length distance between points of tangency SW smalles wall thickness of straight tube >Meaning of measurements and symbols: A leg length differenceĮ (2R + D): 2x radius plus outside diameter If customer requirements differ from these values, the customer requirements replace this standard after exmination. Tolerances for smaller radii have to be agreed with the customer. This technical delivery standard refers to seamless austenitic, duplex, ferritic and martensitic steel, nickel alloys, titanium and titanium alloy U-bend tubes with radii from 1,5 D.
