Standard: ASTM, AISI, DIN, EN, GB, JIS
Technique: Hot Rolled/Cold Rolled/Galvnized
Processing Service: Welding, Punching, Cutting
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Get A QuoteStainless steel pipe is a widely used metal material with excellent corrosion resistance, high temperature resistance, and good mechanical properties. The following is a brief description:
Chemical Composition
The main chemical components of stainless steel pipe include chromium (Cr), nickel (Ni), molybdenum (Mo) and other elements. In general, the chromium content is above 18%, the nickel content is above 8%, and the molybdenum content is about 2%-3%.
Mechanical Properties
•Tensile Strength: It reflects the maximum tensile force that the material can withstand per unit area, generally ranging from 500MPa to 1000MPa or more, depending on the grade and processing technology.
•Yield Strength: The stress value at which the material begins to undergo plastic deformation during the force application process, usually 200MPa-600MPa.
•Elongation: The ability of the material to continue to extend before fracture, usually expressed as a percentage, generally in the range of 30%-60%.
•Hardness: The ability of the material to resist external forces such as scratches or indentations, and it is often measured by methods such as Rockwell hardness and Brinell hardness.
Standard Specifications of Different Countries
| Country/Region | Standard Specification | Main Content |
| United States | ASTM A312 | Specifications for welded and seamless stainless steel pipes, covering material grades, dimensions, mechanical properties, and testing methods |
| European Union | EN 10217-7 | Defines the requirements for stainless steel pipes used in pressure equipment, including chemical composition, mechanical properties, and quality inspection |
| China | GB/T 14976 | Specifications for seamless stainless steel pipes, specifying the dimensions, tolerances, mechanical properties, and inspection rules of stainless steel pipes |
Popular Grades
•304 Stainless Steel Pipe: It is the most commonly used grade, with good corrosion resistance and easy to clean and sanitize, suitable for food and beverage applications, building decoration and other fields.
•316 Stainless Steel Pipe: It has better corrosion resistance than 304, especially in chloride and chemical corrosion environments, and is often used in industrial, surgical, outdoor and marine applications.
Popular Q&A
Q: What is the difference between 304 and 316 stainless steel pipes?
A: The main difference is the chemical composition and corrosion resistance. 316 stainless steel contains molybdenum, which makes it more resistant to chloride and chemical corrosion than 304 stainless steel, and is more suitable for harsh environments.
Q: How to choose the appropriate stainless steel pipe grade?
A: It depends on the specific application environment and requirements. If it is a general indoor environment or food and beverage processing, 304 stainless steel pipe is usually sufficient; if it is in a corrosive industrial environment, marine environment or surgical equipment, 316 stainless steel pipe is a better choice.
Q: What are the surface treatment methods of stainless steel pipes?
A: Common surface treatment methods include polishing, pickling, and chromate treatment. Polishing can improve the surface finish and aesthetics; pickling can remove surface oxides and rust; chromate treatment can improve the corrosion resistance and adhesion of the surface.
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