Daxun proudly exports and supplies the premium 317L Stainless Steel Pipe and UNS S31703 Welded Pipe in a myriad of sizes, thicknesses, and standards. Discover competitive pricing for China SS Grade 1.4438 Stainless Steel Pipe online.

Daxun Alloy stands at the forefront of stainless steel pipe manufacturing, offering exceptional SS 317/317L seamless pipes known for their unparalleled durability and precise dimensions. Utilizing both domestic and international steel raw materials, Daxun fabricates SS 317L pipes in diverse sizes and thicknesses to cater to the specific needs of business clients. The 317L alloy, a low carbon stainless steel, boasts enhanced chromium, nickel, and molybdenum levels compared to 316L, delivering superior corrosion resistance. This alloy excels against sulphurous, acetic, formic, citric, and tartaric acids, and resists pitting corrosion when exposed to phosphoric acid, chlorides, bromides, and iodides. Daxun offers a comprehensive range, including 317L Stainless Steel Seamless Pipe, 317L Stainless Steel ERW Pipe, 317L Stainless Steel EFW Pipe, and 317L Stainless Steel Welded Pipe and Tube, all adhering to ASTM A213, A312, A269, and A358 standards.

Chemical Composition of 317 Stainless Steel Pipe

Premier Suppliers of Stainless Steel Tubes and Pipes in China

GENERAL PROPERTIES - EXCEPTIONAL QUALITY

The 317L Stainless Steel Pipe is an advanced, molybdenum-enriched, low-carbon austenitic stainless steel. Enhanced with additional chromium, nickel, and molybdenum, it boasts superior resistance to corrosion and chemical attacks, particularly against sulfite, acetic, formic, citric, and tartaric acids. Its low carbon composition prevents sensitization during welding, while offering remarkable creep, rupture stress, and tensile strength at elevated temperatures. Though nonmagnetic in its annealed state, it may exhibit slight magnetism post-welding.

EXEMPLARY APPLICATIONS

The 317L seamless pipe is indispensable in the processing of sulfur, pulp liquors, acid dyes, acetylation and nitration mixtures, bleaching solutions, heavy coal and petroleum, and other chemical compounds. Additional applications include:

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

STANDARDS & SPECIFICATIONS - ALLOY 317L

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

UNPARALLELED CORROSION RESISTANCE

• Exhibits outstanding corrosion resistance across challenging environments, especially in acidic chloride conditions.
• Excellent performance in applications requiring minimal contamination.
• Its low carbon content ensures heightened resistance to intergranular corrosion.
• Effectively resists pitting in the presence of phosphorus acids, chlorides, bromides, and iodides.

SUPERIOR HEAT RESISTANCE

• Chromium-nickel-molybdenum steels offer remarkable oxidation resistance.
• Maintains low scaling rates in typical atmospheres up to temperatures of 1600-1650°F (871-899°C).

EXCEPTIONAL WELDING CHARACTERISTICS

• Compatible with all common fusion and resistance methods, excluding oxyacetylene welding.
• To weld Type 317L steel, use AWS E317L/ER317L filler metal or austenitic, low carbon filler metals with increased molybdenum content, or a nickel-base filler metal surpassing Type 317L in chromium and molybdenum for superior corrosion resistance.

PRECISION MACHINABILITY

• Employing low speeds and consistent feeds minimizes the alloy's work hardening tendency.
• Tougher than 304 stainless, featuring a long stringy chip; utilizing chip breakers is highly recommended.

Comprehensive Testing

• We provide an extensive array of mechanical tests to ensure and certify the quality of our products. Our suite of tests includes expansion tests, hardness tests, micro and macro tests, chemical tests, etc., all designed to guarantee the highest level of customer satisfaction.