316 Welded Stainless Steel Pipes
Jul 25, 2023
What Is 316 Stainless Steel Pipe
316 welded stainless steel pipe is a high-quality product known for its excellent corrosion resistance, strength, and versatility. It belongs to the family of austenitic stainless steels, contains chromium and nickel, and has excellent resistance to corrosive environments, including seawater and chemical exposure. The molybdenum addition (2.0-3.0 percent) enhances resistance to pitting corrosion in chloride environments. Welded construction ensures reliable joints and seamless flow of fluid or gas, and the pipe can also be supplied in the seamless form when the application requires it.
| 16.0-18.0 | |
| 10.0-14.0 | |
| 2.0-3.0 | |
| 0.08 max | |
| 0.75 max | |
| 2.00 max | |
| 0.045 max | |
| 0.030 max |
316 offers excellent weldability and formability, good resistance to seawater, chlorides, acids, and alkalis, and retains good toughness at low temperature, making it suitable for cryogenic applications. It is stronger than 304 at elevated temperature, although the practical upper service temperature is limited by oxidation behavior and the risk of sensitization in the 427-857 deg C range unless the low-carbon 316L version is used.
| ASTM A213, A312, A269, A778, A789, DIN 17456/17457/17459, JIS G3459, G3463, EN 10216, BS 3605, GB 13296 | |
| 304, 304L, 309S, 310S, 316, 316Ti, 317, 317L, 321, 347, 347H, 316L and related grades | |
| 1-150 mm | |
316 welded stainless steel pipes are used in chemical and petrochemical processing, seawater desalination and marine systems, pulp and paper plants, food and beverage lines, pharmaceutical plants, and general corrosive fluid transport. For welded construction in heavy chloride service, the low-carbon 316L grade is usually preferred because it avoids sensitization during welding.
Q: What is the difference between 316 and 316L? A: 316L has a maximum carbon content of 0.03 percent, reducing sensitization risk during welding and improving resistance to intergranular corrosion.
Q: Can 316 welded pipe be used for cryogenic applications? A: Yes, 316 stainless steel has good low-temperature toughness and is suitable for low-temperature service.
Q: What standard applies to 316 welded pipe? A: ASTM A312 for seamless and welded austenitic stainless steel pipe; A358 covers large-diameter welded pipe.
Q: Why is molybdenum added to 316? A: Molybdenum improves resistance to pitting and crevice corrosion in chloride environments.
Q: What is the maximum carbon content of 316? A: 0.08 percent, versus 0.03 percent for 316L.
Q: Can 316 be welded? A: Yes, with excellent weldability using matching austenitic filler metals and inert gas shielding.
Need 316 stainless steel welded pipe for your project? Send your size, grade, and quantity for a quotation with material test reports.
