Daxun proudly stands as a premier exporter and supplier of 317L Stainless Steel Pipe and UNS S31703 Welded Pipe. Available in a wide array of sizes, thicknesses, and standards, we invite you to explore our online platform for the most competitive China SS Grade 1.4438 Stainless Steel Pipe prices.

Daxun Alloy has established itself as a dominant force in the stainless steel pipe industry. Our SS 317/317L seamless pipes are unparalleled in durability and precision. Utilizing both domestic and international steel raw materials, we manufacture SS 317L pipes in diverse sizes and thicknesses, tailored to meet the unique needs of our business clients. The 317L alloy, a low-carbon stainless steel, boasts superior chromium, nickel, and molybdenum content compared to 316L, ensuring exceptional corrosion resistance. This alloy withstands sulphurous, acetic, formic, citric, and tartaric acids and resists pitting corrosion from phosphoric acids, chlorides, bromides, and iodides. Our offerings include 317L Stainless Steel Seamless Pipe, ERW Pipe, EFW Pipe, and Welded Pipe and Tube, all conforming to ASTM A213, A312, A269, A358 standards.

Chemical Composition of 317 Stainless Steel Pipe: Unveiling the robust and durable chemistry behind our 317 stainless steel pipe, expertly formulated to ensure superior performance and longevity in diverse applications.

Leading stainless steel tube and pipe Suppliers in China

GENERAL PROPERTIES

The 317L Stainless Steel Pipe boasts a molybdenum-enriched, low-carbon austenitic stainless steel composition. Enhanced with additional chromium, nickel, and molybdenum, this pipe offers superior resistance to corrosion and various chemicals, including sulfite, acetic, formic, citric, and tartaric acids. Its low carbon content ensures resistance to sensitization during welding, while providing exceptional creep, rupture stress, and tensile strength at high temperatures. Nonmagnetic when annealed, it may exhibit slight magnetism post-welding.

APPLICATIONS

The 317L seamless pipe is ideal for applications involving sulfur compounds, pulp liquors, acid dyes, acetylation and nitration mixtures, bleaching solutions, heavy coal and petroleum processing, and various chemicals. Additional uses for the 317L alloy include:

• Paper and pulp handling equipment
• Chemical and petrochemical processing equipment
• Condensers in fossil and nuclear fueled power generation stations
• Food processing equipment
• Textile equipment

STANDARDS - ALLOY 317L

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

CORROSION RESISTANCE

• Exhibits exceptional corrosion resistance in challenging environments, particularly in acidic chloride settings.
• Ideal for applications requiring minimal contamination.
• Its low carbon content ensures high resistance to intergranular corrosion.
• Effectively combats pitting when exposed to phosphorus acids, chlorides, bromides, and iodides.

HEAT RESISTANCE

• Chromium-nickel-molybdenum steels, including 317L, offer excellent oxidation resistance.
• Maintains a low scaling rate in normal atmospheres at temperatures up to 1600-1650°F (871-899°C).

WELDING CHARACTERISTICS

• Compatible with all common fusion and resistance welding methods, excluding oxyacetylene welding.
• For welding Type 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 Type 317L's corrosion resistance.

MACHINABILITY

• To minimize work hardening, use low speeds and constant feeds.
• Tougher than 304 stainless, requiring the use of chip breakers for its long, stringy chips.

Testing

• We provide a broad array of mechanical tests to ensure and validate product quality. These include expansion tests, hardness tests, micro and macro tests, chemical tests, and more, all designed to achieve maximum customer satisfaction.