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

Daxun Alloy stands as a leading manufacturer of stainless steel pipes, with our SS 317/317L seamless pipes setting the benchmark for durability and dimensional precision. Utilizing both domestic and international steel raw materials, we produce SS 317L pipes in a wide array of sizes and thicknesses to cater to the specific needs of business clients. The 317L alloy, a low-carbon stainless steel, boasts elevated chromium, nickel, and molybdenum levels compared to 316L, ensuring superior corrosion resistance. This alloy withstands attacks from sulphurous acid, acetic acid, formic acid, citric acid, and tartaric acid, and resists pitting corrosion in the presence of phosphoric acid, chlorides, bromides, and iodides. We offer 317L Stainless Steel Seamless Pipe, 317L Stainless Steel ERW Pipe, 317L Stainless Steel EFW Pipe, and 317L Stainless Steel Welded Pipe and Tube, all conforming to ASTM A213 / A312 / A269 / A358 standards.

Chemical Composition of 317 Stainless Steel Pipe: Our 317L Stainless Steel Tube, compliant with ASTM A312 standards, boasts an outstanding chemical composition. Meticulously crafted for superior performance, it ensures unparalleled durability and resistance to corrosion, making it the preferred choice for demanding applications.

Leading Stainless Steel Tube and Pipe Suppliers in China

GENERAL PROPERTIES

The 317L Stainless Steel Pipe, crafted by Jiangsu Daxun Alloy Co., Ltd., is a high-performance, molybdenum-containing low-carbon austenitic stainless steel. With enhanced levels of chromium, nickel, and molybdenum, it offers superior corrosion and chemical resistance against acids such as sulfite, acetic, formic, citric, and tartaric. Its low carbon content ensures resistance to sensitization during welding and provides higher creep, rupture stress, and tensile strength at elevated temperatures. While nonmagnetic in its annealed state, it may exhibit slight magnetism post-welding.

APPLICATIONS

The 317L seamless pipe excels in handling sulfur, pulp liquors, acid dyes, acetylation, nitration mixtures, bleaching solutions, heavy coal, petroleum, and many other chemical compounds. Additional noteworthy applications 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 outstanding corrosion resistance in challenging environments, particularly in acidic chloride settings.
• Provides exceptional resistance in applications where minimal contamination is crucial.
• The low carbon content of 317L makes it highly resistant to intergranular corrosion.
• Effectively resists pitting when exposed to phosphoric acids, chlorides, bromides, and iodides.

HEAT RESISTANCE

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

WELDING CHARACTERISTICS

• Compatible with all common fusion and resistance welding methods, except for oxyacetylene welding.
• For optimal welding results, use AWS E317L/ER317L filler metal or low carbon austenitic filler metals with a higher molybdenum content than Type 317L, or a nickel-base filler metal with sufficient chromium and molybdenum content to exceed the corrosion resistance of Type 317L.

MACHINABILITY

• Utilize low speeds and constant feeds to minimize work hardening of this alloy.
• Tougher than 304 stainless steel, 317L generates long, stringy chips; the use of chip breakers is recommended.

Testing

• We provide an extensive range of mechanical tests to ensure the highest quality for our products. These include expansion tests, hardness tests, micro and macro tests, and chemical tests, all meticulously designed to ensure maximum customer satisfaction.