Daxun is a premier exporter and supplier of 317L Stainless Steel Pipe and UNS S31703 Welded Pipe, available in a variety of sizes, thicknesses, and standards. Check our competitive China SS Grade 1.4438 Stainless Steel Pipe Prices online.

Daxun Alloy stands as a leading manufacturer of stainless steel pipes. Our SS 317/317L seamless pipes are distinguished by their exceptional durability and precise dimensions. The global availability of steel raw materials enables us to produce SS 317L pipes in diverse sizes and thicknesses to fulfill the unique needs of our business clientele. The 317L alloy, a low carbon stainless steel with a higher content of chromium, nickel, and molybdenum than 316L, offers superior corrosion resistance. This versatile steel withstands sulphurous, acetic, formic, citric, and tartaric acids, and resists pitting corrosion from phosphoric acid, chlorides, bromides, and iodides. We provide 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: The 317 stainless steel pipe is crafted with a meticulous blend of elements to offer superior performance. Its chemical composition typically includes high levels of chromium, nickel, and molybdenum, which provide exceptional resistance to corrosion and pitting in aggressive environments. This high-alloy content ensures durability and long-lasting service, making it an ideal choice for demanding applications where strength and resilience are paramount.

Leading Stainless Steel Tube and Pipe Suppliers in China

GENERAL PROPERTIES

The 317L Stainless Steel Pipe is a sophisticated molybdenum-containing, low-carbon austenitic stainless steel. Enhanced with additional chromium, nickel, and molybdenum, it offers superior corrosion and chemical resistance, particularly against sulfite, acetic, formic, citric, and tartaric acids. Its low carbon content ensures resistance to sensitization during welding and delivers higher creep, rupture stress, and tensile strength at elevated temperatures. This steel is nonmagnetic when annealed but may gain slight magnetism post-welding.

APPLICATIONS

317L seamless pipe is indispensable in handling sulfur, pulp liquors, acid dyes, acetylation, and nitration mixtures, as well as bleaching solutions, heavy coal, petroleum, and various chemical compounds. Additional applications of this versatile 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

• Boasts exceptional corrosion resistance in challenging environments, particularly in acidic chloride conditions.
• Ideal for applications where maintaining a contamination-free environment is crucial.
• The 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, exhibit excellent oxidation resistance.
• Maintains low scaling rates in standard atmospheres up to temperatures of 1600-1650°F (871-899°C).

WELDING CHARACTERISTICS

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

MACHINABILITY

• Employing low speeds and constant feeds helps reduce this alloy's tendency to work harden.
• More challenging than 304 stainless due to its long, stringy chips; using chip breakers is recommended.

Testing

• We perform a comprehensive range of mechanical tests to ensure the highest quality of our products. These include expansion tests, hardness tests, micro and macro tests, chemical tests, and more, all designed to achieve maximum customer satisfaction.