Daxun is a premier exporter and supplier of 317L Stainless Steel Pipe and UNS S31703 Welded Pipe, available in various sizes, thicknesses, and standards. Explore competitive pricing for China SS Grade 1.4438 Stainless Steel Pipe online.

Daxun Alloy stands as a leading manufacturer of stainless steel pipes. Our SS 317/317L seamless pipes are uniquely acclaimed for their exceptional durability and precise dimensions. Utilizing both domestic and international steel raw materials, we produce SS 317L pipes in diverse sizes and thicknesses, tailored to business customers' specific needs. The 317L alloy, a low carbon stainless steel, offers superior corrosion resistance due to its higher chromium, nickel, and molybdenum content compared to 316L. It resists acids such as sulphurous, acetic, formic, citric, and tartaric, and withstands pitting corrosion from phosphoric acid, chlorides, bromides, and iodides. Choose from a variety of pipes including 317L Stainless Steel Seamless Pipe, ERW Pipe, EFW Pipe, and Welded Pipe and Tube conforming to ASTM A213 / A312 / A269 / A358 standards.

Chemical Composition of 317 Stainless Steel Pipe

Leading stainless steel tube and pipe Suppliers in China

GENERAL PROPERTIES

317L Stainless Steel Pipe is a premium molybdenum-enriched, low-carbon austenitic stainless steel, featuring an increased concentration of chromium, nickel, and molybdenum. This enhanced composition offers superior resistance to corrosion and excellent chemical resistance against sulfite, acetic, formic, citric, and tartaric acids. The low carbon content ensures 317L Pipe remains unsensitized during welding, and it boasts remarkable creep resistance, rupture stress, and tensile strength at elevated temperatures. It is nonmagnetic in the annealed state but may become slightly magnetic post-welding.

APPLICATIONS

317L seamless pipe excels in the transportation of sulfur, pulp liquors, acid dyes, acetylation, and nitration mixtures, bleaching solutions, heavy coal and petroleum, and various chemical compounds. It is also highly suitable for:

• 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 outstanding corrosion resistance in challenging environments, particularly in acidic chloride conditions.
• Provides excellent resistance in scenarios where minimal contamination is crucial.
• The low carbon content significantly enhances 317L's resistance to intergranular corrosion.
• Effectively counters pitting when exposed to phosphoric acids, chlorides, bromides, and iodides.

HEAT RESISTANCE

• All chromium-nickel-molybdenum steels demonstrate exceptional oxidation resistance.
• Shows a very low scaling rate in typical 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 optimal welding results, use AWS E317L/ER317L filler metal or austenitic, low carbon filler metals with higher molybdenum content than Type 317L, or a nickel-base filler metal with sufficient chromium and molybdenum content to surpass the corrosion resistance of Type 317L steel.

MACHINABILITY

• Employ low speeds and consistent feed rates to minimize work hardening tendencies.
• Tougher than 304 stainless steel and characterized by long, stringy chips; using chip breakers is advisable.

Testing

• We offer an extensive array of mechanical tests to ensure and validate our products' quality. These tests encompass expansion tests, hardness tests, micro and macro tests, chemical analyses, and more, all meticulously designed to ensure the utmost satisfaction of our esteemed customers.