Material characteristics

Chemical Composition: Main components include Chromium (Cr) content ranging from 24.00% to 26.00%, Nickel (Ni) content from 19.00% to 22.00%, and Carbon (C) content of ≤0.08%. The higher Chromium and Nickel contents provide excellent oxidation and corrosion resistance, while the low Carbon content enhances heat resistance.

Mechanical Properties: Offers high strength and hardness, with tensile strength ≥515MPa, yield strength ≥205MPa, elongation ≥35%, hardness ≤310HB. Capable of withstanding heavy loads and forming during the processing.

Specification and dimensions

Standard Specifications: The commonly available 310S seamless square tubes on the market come in a wide range of sizes, typically with side lengths from 10mm x 20mm to 300mm x 600mm, wall thicknesses from 0.5mm to 20mm, and standard lengths of 6m, 12m, etc. Special sizes can also be customized according to customer requirements.

Manufacturing Process

Production Process: Generally manufactured using cold rolling or hot rolling techniques. The process involves steps such as raw material preparation, melting and casting, hot rolling or cold drawing shaping, heat treatment, pickling and passivation, inspection and testing, to ensure the smooth inner and outer walls of the pipes, free from defects like blowholes and cracks, and accurate dimensions.

Standard of Implementation

Related Standards: Commonly implemented standards include ASTM A312, ASTM A790, SA213, SA249, SA789, GB/T14976, etc.

Application Fields

Chemical Industry: Used in the production of reactors, pipelines, etc., capable of withstanding the erosion of various corrosive mediums.

Heat Treatment Equipment: Such as heating furnaces, heat exchangers, etc., capable of stable operation in high-temperature environments.

Architectural Decoration: Suitable for decorative renovations in buildings, such as stainless steel railings and handrails, offering both aesthetics and functionality.

Automotive Manufacturing: Especially for racing car exhaust systems, materials that can withstand high temperatures and pressures are required. 310S seamless square tube is one ideal choice.

Environmental protection equipment: Such as flue pipes for incinerators and pipelines for treating high-temperature corrosive gases, 310S seamless square tubes are also used.

III. Technical Requirements

Material: 310S stainless steel, with chemical composition meeting relevant standards, such as Chromium (Cr) content between 24.00% to 26.00%, Nickel (Ni) content between 19.00% to 22.00%, Carbon (C) content ≤ 0.08% etc.

Compliance Standards: Meets one or more of the standards, including ASTM A312, ASTM A790, GB/T14976, etc.

Mechanical properties: Tensile strength ≥ 515 MPa, yield strength ≥ 205 MPa, elongation ≥ 35%, hardness ≤ 310 HB.

Surface Quality: The inner and outer walls of the pipes should be smooth, free from sand holes, cracks, folds, oxide scales, and other defects. The surface can be acid washed and passivated as required to achieve a certain level of brightness.

Dimensional Tolerance: Edge length tolerance within ±0.5mm, wall thickness tolerance within ±0.05mm, and length tolerance within ±5mm.

Four, after-sales service

Suppliers must provide a product manual, ensuring that the supplied products are brand new and unused, and are of qualified quality. The warranty period under normal use conditions is [X] years.

After-sales Service: In case of quality issues with the product during use, the supplier shall respond within [X] hours upon receiving notification, and send a person to the site for handling within [X] working days.

Section 5: Packaging Requirements

Section 6: Pricing and Payment Terms

Unit Price: [Price per piece or per ton] Yuan

Total Amount: [Total Amount] Yuan

Payment Terms: [e.g., 30% advance payment, with the remaining 70% due upon receipt and acceptance of the goods]

Section 7: Additional Terms

Default Liability: If the supplier fails to deliver on time or the product quality does not meet the requirements, they should assume the corresponding default liability, such as paying liquidated damages and compensating for losses.

Dispute Resolution: In case of disputes arising during the procurement process, both parties should settle them amicably; if no agreement is reached, a lawsuit may be filed with the people's court having jurisdiction at the place of contract signing.