Manual metal arc (MMA) is the most versatile of the welding processes and is suitable for welding ferrous and non-ferrous material over a wide range of thickness and in all positions. This process is easy to use and relatively economical. For many years it was the most common arc welding process but has now been overtaken by MIG/MAG processes.
TWI has considerable experience in the successful development and qualification of MMA welding procedures for a variety of different applications, across numerous industry sectors.
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