Welded stainless steel tubes for tubular heater

Welded stainless steel tubes for heating: 1>OD6mm-23mm 2>Thickness 0.4-1.5mm 3>Materail:304/304L (1.4301/1.4307); 316/316L (1.4401/1.4404); 310S (1.4845); 309s 4),welding and anealing,acid washing,polished,easy to be bended 5),can be color black or green for heater elements. The tubes by our company bring to no worry to the customers in terms of the quality of the welding seam,the interior and exterior surface of the tube as well as the property of extensibilityThere are some pictures thatheater elements aremade of stainless steel tube.