A249 316 316L stainless steel tube is applied for boiler, heat exchanger, condenser equipment, stainless steel 316/316L is excellent corrosion resistance in welded stainless steel heat exchaner tube, better than 304/304L stainless steel, extanding life of stainless steel tube in harsh environments, in many cases, A249 316/316L welded stainless steel tubing, it is best option for heat exchanger, super heater, boiler.
producing of A249 316 316L Stainless Steel Tube
Nowadays, with development of technology in welded stainless steel tube, in many circumstances, seamless tube can been replaced by welded tube for same purpose. for A249 stainless steel welded tube, we focus on heat treatment, seam welding of important process in the welded tube producing, and impact a excellent corrosion performance.
TIG Welding & Welding Seam
TIG welding can effectively isolate from the surrounding air, not reaction, the arc in the process of tungsten argon arc welding and automatic removal of the role of the surface oxide film.
Welding bead will be removed, and cold drawing will been made, and a good corrosion performance.
Solution annealing is a important stage in process of welded stainless steel tube, after full solution annealing, tube will be softness and easy to form and fabrication, such as stainless steel U bending tube, stainless steel coiled tube, solution annealing will remove alloy segregation, and grains will recrystallize as a development of becoming stress relief. We will concern about annealing temperature and time depanding on which stainless steel grade.
Tolerance control as A249
||OD＜50.8mm +3.0mm -0mm
OD≥50.8mm +5.0 -0mm