Daxun is your global destination for premium 317L Stainless Steel Pipe and UNS S31703 Welded Pipe in an array of sizes, thicknesses, and standards. Discover competitive prices for China's SS Grade 1.4438 Stainless Steel Pipe online.

Daxun Alloy stands as a leading manufacturer of stainless steel pipes, with our hallmark SS 317/317L seamless pipes setting industry standards. Celebrated for exceptional durability and precise dimensions, our SS 317l pipes cater to diverse business needs, available in various sizes and thicknesses. The 317L alloy, enriched with higher chromium, nickel, and molybdenum than 316L, ensures superior corrosion resistance. It's resilient against a range of acids including sulphurous, acetic, formic, citric, tartaric, and withstands pitting corrosion from phosphoric acid, chlorides, bromides, and iodides. Choose from 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: Dive into the intricate chemical makeup of our high-quality 317 stainless steel pipe. Expertly designed to meet your specific needs, this composition ensures longevity, strength, and excellent performance.

Pioneers in Stainless Steel Tubes and Pipes Supply in China

GENERAL PROPERTIES

The 317L Stainless Steel Pipe is a premium-grade, molybdenum-enriched, low-carbon austenitic stainless steel. It boasts added chromium, nickel, and molybdenum to significantly enhance corrosion and chemical resistance against substances like sulfite, acetic, formic, citric, and tartaric acids. Its low carbon content prevents sensitization during welding and offers superior creep, rupture stress, and tensile strength at elevated temperatures. The material remains nonmagnetic in its annealed state, though it may exhibit slight magnetism post-welding.

APPLICATIONS

The 317L seamless pipe is versatile, finding use in handling sulfur, pulp liquors, acid dyes, bleaching solutions, acetylation, nitration mixtures, heavy coal and petroleum processing, and various chemical compounds. Additional applications for the 317L alloy encompass:

• Paper and pulp processing equipment
• Chemical and petrochemical processing machinery
• Condensers in fossil and nuclear power generation plants
• Food processing machinery
• Textile production equipment

STANDARDS - ALLOY 317L

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

CORROSION RESISTANCE

• Exhibits exceptional corrosion resistance in challenging environments, particularly a broad spectrum of chemicals, including acidic chloride settings.
• Provides excellent resistance where minimal contamination is critical.
• The low carbon content ensures 317L's high resistance to intergranular corrosion.
• Effectively resists pitting when exposed to phosphorus acids, chlorides, bromides, and iodides.

HEAT RESISTANCE

• All chromium-nickel-molybdenum steels offer superb oxidation resistance.
• Maintains a low scaling rate in standard atmospheres at temperatures up to 1600-1650°F (871-899°C).

WELDING CHARACTERISTICS

• Proven successful with all common fusion and resistance welding techniques, except oxyacetylene welding.
• For welding Type 317L steel, use AWS E317L/ER317L filler metal or austenitic, low carbon filler metals richer in molybdenum than Type 317L, or a nickel-base filler metal with adequate chromium and molybdenum to surpass Type 317L's corrosion resistance.

MACHINABILITY

• Utilize low speeds and constant feeds to reduce the alloy's work hardening tendencies.
• Tougher than 304 stainless steel, it produces long stringy chips. The use of chip breakers is recommended.

Testing

• We provide a comprehensive spectrum of mechanical tests to verify and ensure the quality of our products. These tests include expansion tests, hardness tests, micro and macro examinations, chemical tests, among others, all aimed at delivering outstanding satisfaction to our esteemed customers.