1,Overall Welding; 2,Thickness :2mm; 3,Material: SUS304 The water leakage testing machine is our own developed machine. It is used to ... the water leakage after the inner barrel is welded. Its material is Stainless Steel. It woks by the air pressure principle ... . It is easily operated and efficiency.Main Structure Perfomance:1,Overall Welding;2,Thickness :2mm;3,Material: ...