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Buttwelds are weldable pipe fittings used in changing the direction, branching, reducing, or enlarging pipe size in a piping system. Using buttweld fittings utilizes minimal space compared to other types of fittings and guarantees permanent leakproof connections. Additionally, the continuous metal structure from the pipe to the fittings, together with the smooth inner surface, reduces pressure losses in the system. Buttwelds are commonly made from stainless steel and are available in various sizes.