ASTM A312 TP 317L Stainless Steel Seamless Pipe Products Description
ASTM A312 TP317L stainless steel seamless pipe is a low-carbon, molybdenum-containing austenitic stainless steel seamless pipe that conforms to ASTM A312 (equivalent to ASME SA312) standards. Its corresponding UNS number is S31703, and its DIN standard number is 1.4438. As a low-carbon modified version of 317 stainless steel, it offers superior corrosion resistance and weldability, and is commonly used in various demanding applications.
| Nominal Size | Nominal Size | Outer Diameter | Wall Thickness for Different Schedules (mm) | |||
|---|---|---|---|---|---|---|
| (DN) | (Inch) | (mm) | 5S | 10S | 40S | 80S |
| DN6 | 1/8 | 10.3 | - | 1.24 | 1.73 | 2.41 |
| DN8 | 1/4 | 13.7 | - | 1.65 | 2.24 | 3.02 |
| DN10 | 3/8 | 17.1 | - | 1.65 | 2.31 | 3.20 |
| DN15 | 1/2 | 21.3 | 1.65 | 2.11 | 2.77 | 3.73 |
| DN20 | 3/4 | 26.7 | 1.65 | 2.11 | 2.87 | 3.91 |
| DN25 | 1 | 33.4 | 1.65 | 2.77 | 3.38 | 4.55 |
| DN32 | 1¼ | 42.2 | 1.65 | 2.77 | 3.56 | 4.85 |
| DN40 | 1½ | 48.3 | 1.65 | 2.77 | 3.68 | 5.08 |
| DN50 | 2 | 60.3 | 1.65 | 2.77 | 3.91 | 5.54 |
| DN65 | 2½ | 73.0 | 2.11 | 3.05 | 5.16 | 7.01 |
| DN80 | 3 | 88.9 | 2.11 | 3.05 | 5.49 | 7.62 |
| DN90 | 3½ | 101.6 | 2.11 | 3.05 | 5.74 | 8.08 |
| DN100 | 4 | 114.3 | 2.11 | 3.05 | 6.02 | 8.56 |
| DN125 | 5 | 141.3 | 2.77 | 3.40 | 6.55 | 9.53 |
| DN150 | 6 | 168.3 | 2.77 | 3.68 | 7.11 | 10.97 |
| DN200 | 8 | 219.1 | 3.05 | 4.19 | 8.18 | 12.70 |
| DN250 | 10 | 273.0 | 3.40 | 4.83 | 9.27 | 14.27 |
| DN300 | 12 | 323.9 | 3.81 | 5.56 | 10.31 | 15.88 |
Superior Corrosion Resistance: It exhibits outstanding performance in corrosive environments containing chlorine, sulfuric acid, phosphoric acid, and other acidic media. Its critical pitting corrosion temperature reaches 60℃, and it can withstand corrosion from chloride ion concentrations of up to 10,000 ppm, far exceeding 316L stainless steel. This makes it suitable for use in harsh environments such as stagnant saline conditions. It also demonstrates excellent resistance to freshwater and chemical media, preventing corrosion cracking.
Excellent Weldability: Due to its low carbon content, conventional welding methods such as arc welding and TIG welding can be used without requiring additional post-weld heat treatment, resulting in high-strength, corrosion-resistant welds. This avoids performance degradation issues caused by improper heat treatment after welding.
Seamless Structure Advantages:Manufactured through processes such as heating, piercing, and cold drawing of round tube blanks, it has a seamless surface. Compared to welded pipes, it has uniform wall thickness and a smooth inner wall, resulting in lower fluid flow resistance and higher pressure bearing capacity. This eliminates the risk of leakage at weld seams and makes it suitable for high-pressure applications.
Factory Commitments
We are a reputable wholesale manufacturer and solemnly promise to provide the following guarantees for your ASTM A312 TP 317L Stainless Steel Seamless Pipe orders:
First, Quality Assurance: Any ASTM A312 TP 317L Stainless Steel Seamless Pipe that does not meet ASTM, JIS, EN, or DIN standards will be replaced free of charge, at no cost to you.
Second, Fast Delivery: We maintain a year-round inventory of commonly used sizes (18mm-426mm) of ASTM A312 TP 317L Stainless Steel Seamless Pipe.
Third, Production Transparency: We can provide capacity reports and factory audit videos upon request, allowing you to showcase our production capabilities to your clients.
Fourth, 24/7 Support: We will assign a dedicated account manager to provide you with support for ASTM A312 TP 317L Stainless Steel Seamless Pipe that meets ASTM, JIS, EN, and DIN standards. Please feel free to contact us if you need assistance with technical specifications, order updates, or any other matters.
Product Display
Application Areas
ASTM A312 TP317L stainless steel seamless pipes, with their high molybdenum and low carbon composition, offer superior resistance to pitting corrosion, crevice corrosion, and intergranular corrosion compared to 304 and 316L stainless steel. They can withstand harsh corrosive environments containing chloride media, dilute sulfuric acid, phosphoric acid, etc. The seamless structure also provides excellent pressure resistance. They are primarily used in the following industrial applications:
Petrochemical and Refining Industry：
Used in pipelines for transporting crude oil, refined products, and chemical raw materials containing chlorides and sulfides, especially suitable for catalytic cracking units and desulfurization system pipelines in refineries, resisting corrosion from high-temperature sulfur-containing media.
Used as heat exchanger tubes and connecting pipelines for chemical reactors and heat exchangers, suitable for the production of organic acids such as acetic acid and formic acid.
Flue Gas Desulfurization (FGD) Systems：
In flue gas desulfurization units of power plants and steel mills, this pipe material can be used to transport desulfurization slurry containing high concentrations of chloride ions (such as limestone-gypsum slurry), solving the problem of pitting corrosion failure in conventional stainless steel, and is a core material for desulfurization tower spray pipes and slurry circulation pipelines.
Pharmaceutical and Food & Beverage Industries：
In the pharmaceutical field, used in reaction vessel feed pipes and purified water pipelines for the production of antibiotics, vitamins, and other drugs, meeting GMP (Good Manufacturing Practice) requirements for material corrosion resistance and cleanliness.
In the food industry, it can be used as pipelines for transporting acidic foods such as soy sauce, vinegar, and fruit juice. The material is non-toxic and does not easily contaminate the media, and can withstand the corrosion of acid and alkali cleaning agents during the cleaning process.
Seawater Desalination and Marine Engineering：
Pre-treatment pipelines for reverse osmosis systems and seawater pipelines in seawater desalination plants, resisting corrosion from high-salinity seawater and preventing pipeline leakage from affecting desalination efficiency.
Firefighting pipelines and cooling water pipelines on offshore platforms, resisting salt spray corrosion and seawater immersion in the marine atmosphere, extending equipment service life.
Nuclear Power and Energy Industry：
Secondary circuit auxiliary system pipelines in nuclear power plants, used to transport coolant and process water, maintaining stable mechanical properties and corrosion resistance in high-temperature and high-pressure water environments, ensuring the safe operation of nuclear power equipment.
Pulp and Paper and Textile Dyeing Industries：
In the pulp and paper industry, the pipelines for transporting black liquor and bleaching liquid in paper mills are resistant to corrosion from chlorine-based oxidizers used in the bleaching process; in the textile dyeing industry, the pipelines for transporting acid and alkaline dyes can withstand chemical erosion from dyes and auxiliaries, preventing pipeline blockage and contamination of fabrics.
Contact information
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Sales Manager
Official Website: https://www.manufacturerpipe.com
Shuangzhong Intelligent Technology Co., Ltd.
Email: sarah@manufacturerpipe.com
WhatsApp: +86 18939250035
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