tirupati two welders were killed on spot while three others sustained injuries after an air brake compressor of a heavy vehicle exploded at a welding shop at thambiganipalli chittoor district on sunday the deceased were identified as azad 19 and afsar 17 the welding shop belongs to one gouse basha 40the duo were welding a tool box of an earthmover when the blast occurred the welding instrument accidentally burnt the surface of the air brake compressor leading to a sudden explosion taking the duo completely offguard both azad and afsar were killed on the spot and their bodies were severely mutilated said kuppam urban ci iduru basha within seconds of the blast the body parts of azad and afsar lay scattered on the road while the shop owner gouse basha another worker manju 36 and the vehicle owner rafiq ahmad 50 sustained burn injuries