Daxun emerges as a premier exporter and supplier of 317L Stainless Steel Pipe and UNS S31703 Welded Pipe, available in an extensive array of sizes, thicknesses, and standards. Explore our online portal for competitive China SS Grade 1.4438 Stainless Steel Pipe prices.

Daxun Alloy stands at the forefront of stainless steel pipe manufacturing, offering unparalleled SS 317/317L seamless pipes known for their robustness and precision. Leveraging both domestic and global steel resources, we produce SS 317L pipes in diverse sizes and thicknesses to cater to the specific needs of our business clientele. The 317L alloy, with its enhanced chromium, nickel, and molybdenum content, surpasses 316L in corrosion resistance. This low-carbon stainless steel excels against sulphurous, acetic, formic, citric, and tartaric acids, and resists pitting corrosion from phosphoric acid, chlorides, bromides, and iodides. Our offerings include 317L Stainless Steel Seamless Pipe, ERW Pipe, EFW Pipe, and Welded Pipe and Tube, all adhering to ASTM A213 / A312 / A269 / A358 standards.

Chemical Composition of 317 Stainless Steel Pipe: The 317L stainless steel tube is meticulously crafted to include a precise chemical composition, ensuring superior performance and durability. This advanced alloy is designed to withstand the harshest conditions and deliver outstanding resistance to corrosion and oxidation, making it an ideal choice for a wide range of applications. Its unique formulation ensures longevity and reliability, setting it apart from other materials.

Premier Suppliers of Stainless Steel Tubes and Pipes in China

GENERAL PROPERTIES

The 317L Stainless Steel Pipe is an exceptional low-carbon austenitic stainless steel imbued with molybdenum, chromium, nickel, and molybdenum for superior corrosion and chemical resistance. This pipe excels against sulfite, acetic, formic, citric, and tartaric acids. Its low carbon content ensures remarkable resistance to sensitization during welding, while also offering enhanced creep, rupture stress, and tensile strength at higher temperatures. In its annealed form, this stainless steel remains nonmagnetic, though it can become slightly magnetic post-welding.

APPLICATIONS

The 317L seamless pipe is a versatile solution for handling sulfur, pulp liquors, acid dyes, acetylation, and nitration mixtures, as well as bleaching solutions, heavy coal, petroleum, and various chemicals. Notable applications of the 317L alloy include:

• Paper and Pulp Handling Equipment
• Chemical and Petrochemical Processing Equipment
• Condensers in Fossil and Nuclear Fueled Power Stations
• Food Processing Equipment
• Textile Equipment

STANDARDS - ALLOY 317L

• ASTM/ASME: UNS N08020
• EURONORM: FeMi35Cr20Cu4Mo2
• DIN: 2.4660

CORROSION RESISTANCE

• Boasts exceptional corrosion resistance in challenging environments, particularly acidic chloride conditions.
• Provides excellent resistance in applications where contamination control is critical.
• Its low carbon content makes 317L highly resistant to intergranular corrosion.
• Effectively combats pitting when exposed to phosphorus acids, chlorides, bromides, and iodides.

HEAT RESISTANCE

• Chromium-nickel-molybdenum steels exhibit outstanding resistance to oxidation.
• Maintains a low rate of scaling in regular atmospheres at temperatures up to 1600-1650°F (871-899°C).

WELDING CHARACTERISTICS

• Proven success with all standard fusion and resistance welding methods, except oxyacetylene welding.
• For welding 317L steel, use AWS E317L/ER317L filler metal, or austenitic, low carbon filler metals with higher molybdenum content, or nickel-base filler metals with sufficient chromium and molybdenum to surpass the corrosion resistance of Type 317L.

MACHINABILITY

• Utilize low speeds and constant feeds to reduce work hardening tendencies of this alloy.
• Tougher than 304 stainless; chip breakers are recommended due to its long stringy chip.

Testing

• Our range of mechanical tests ensures the highest quality, including expansion, hardness, micro and macro, and chemical tests. These rigorous tests are designed to ensure utmost satisfaction for our valued customers.