316L stainless steel welded pipe is a widely used pipe. Mechanical equipment, petrochemical equipment, medical equipment, food and light industry transportation pipelines, or mechanical components all use 316L stainless steel pipes, but many people may not be able to distinguish between 316 and 316L pipes. So what is the difference between 316 and 316L stainless steel welded pipes?
1. Cost difference: 316L welded pipe has slightly lower carbon content and is more convenient to weld. Therefore, the price of 316L stainless steel welded pipe is slightly more expensive than 316 stainless steel welded pipe, but the difference is not big. In addition, 316L welded pipe can also be called ultra-low carbon 316 stainless steel.
2. Difference in corrosion resistance: 316L welded pipe has stronger corrosion resistance than 316 stainless steel pipe, and is suitable for areas with strong corrosion such as seaside and seawater.
3. Difference in strength: The tensile strength of 316L welded pipe is higher than that of 316 welded pipe. The tensile strength of 316L stainless steel welded pipe is higher than 520MPa. The tensile strength of 316 welded pipe is only greater than 480Mpa. This is because carbon is a strong austenite-forming element that can significantly improve the strength of stainless steel welded pipes.
4. Differences in welding treatments: Carbon (C) has a negative impact on the corrosion resistance of stainless steel welded pipes. Especially for stainless steel welded pipes that need to be welded, the corrosion resistance of low-carbon TP316L welded pipes after welding is lower than that of 316 welded pipes. Due to its good corrosion resistance, the welded section of 316 stainless steel needs to be solution annealed after welding. If 316L welded pipe is used, solution annealing after welding is not required.
5. Differences in application: The cost difference between 316L stainless steel welded pipe and 316 stainless steel welded pipe is not big. The corrosion resistance and weldability of 316L stainless steel welded pipe are significantly better than ordinary 316 stainless steel welded pipe.
The above is the difference between 316 stainless steel welded pipe and 316L stainless steel welded pipe introduced to you. GNEE Group is a professional 316L stainless steel welded pipe supplier. If you need 316L welded pipe, you can contact us at any time to get a quotation.
