Daxun proudly exports and supplies premium 317L Stainless Steel Pipe and UNS S31703 Welded Pipe in a diverse array of sizes, thicknesses, and standards. For competitive pricing, explore our online China SS Grade 1.4438 Stainless Steel Pipe offerings.

As a leading force in the stainless steel pipe industry, Daxun Alloy presents the unparalleled SS 317/317L seamless pipes, celebrated for their robustness and precise dimensions. With rich domestic and international raw material sources, we deliver SS 317L pipes in various sizes and thicknesses tailored to specific business needs. The 317L alloy, boasting higher chromium, nickel, and molybdenum content than 316L, delivers 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. Our range includes 317L Stainless Steel Seamless Pipe, ERW Pipe, EFW Pipe, and Welded Pipe and Tube, all conforming to ASTM A213 / A312 / A269 / A358 standards.

Unveiling the Chemical Composition of 317 Stainless Steel Pipe

Leading Stainless Steel Tube and Pipe Suppliers in China

General Properties

The 317L Stainless Steel Pipe by Jiangsu Daxun Alloy Co., Ltd. stands out as a molybdenum-containing, low-carbon austenitic stainless steel. Enhanced with additional chromium, nickel, and molybdenum, it offers remarkable resistance to corrosion and chemicals such as sulfite, acetic, formic, citric, and tartaric acids. Its low carbon content prevents sensitization during welding while increasing its creep, rupture stress, and tensile strength at elevated temperatures. This alloy remains nonmagnetic in its annealed condition, with a slight magnetism potentially arising post-welding.

Applications

The versatile 317L seamless pipe excels in handling sulfur, pulp liquors, acid dyes, acetylation and nitration mixtures, bleaching solutions, heavy coal, petroleum, and many other chemical compounds. Its broad 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 superior corrosion resistance in challenging environments, including various chemicals, particularly in acidic chloride settings.
• Provides excellent resistance when minimal contamination is required.
• Its low carbon content ensures high resistance to intergranular corrosion.
• Effectively combats pitting in contact with phosphoric acids, chlorides, bromides, and iodides.

Heat Resistance

• All chromium-nickel-molybdenum steels, including 317L, show excellent oxidation resistance.
• Maintains a 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 methods, except oxyacetylene welding.
• 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 adequate chromium and molybdenum to exceed Type 317L's corrosion resistance.

Machinability

• Low speeds and constant feeds minimize work hardening in this alloy.
• Tougher than 304 stainless, the use of chip breakers is recommended due to its long stringy chip.

Testing

• We conduct a comprehensive range of mechanical tests, including expansion tests, hardness tests, micro and macro tests, and chemical tests, to ensure our products meet the highest standards and deliver utmost satisfaction for our valued customers.