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| Customization: | Available |
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| Type: | Stainless Steel Pipe |
| Composition: | Stainless Steel Scrap |
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Stainless Steel Pipe/Tube Welded Square Pipe
Stainless steel is an alloy steel whose main component is iron, while containing at least 11% chromium, as well as other elements such as nickel, molybdenum, manganese and so on. The following are some properties of stainless steel:
Corrosion resistance: Stainless steel is known for its excellent corrosion resistance. The chromium element reacts with oxygen to form a dense oxide film (chromium oxide layer), which prevents further oxidation and corrosion on the surface of the steel, making the stainless steel resistant to the erosion of most chemical media. This makes stainless steel widely used in environments containing water, gases and chemicals.
High temperature performance: stainless steel maintains good performance at high temperatures and can maintain structural stability and strength for a long time. This makes stainless steel suitable for high-temperature processes and applications, such as petrochemical, energy production and other fields.
Mechanical properties: Stainless steel has excellent mechanical properties, including strength, hardness and ductility. This makes stainless steel widely used in manufacturing industries, including automotive, aerospace, construction and manufacturing.
Aesthetic: The surface of stainless steel is smooth and uniform, and it can show different appearance effects by polishing, brushing or painting. This makes stainless steel in architectural decoration, furniture manufacturing, art production and other fields have a wide range of applications.
Renewable: Stainless steel is a recyclable material, through recycling and reuse, can reduce resource consumption and environmental pollution, in line with the principle of sustainable development.
In general, stainless steel has excellent properties such as corrosion resistance, high temperature resistance, good mechanical properties, aesthetics and renewability, making it widely used in various industrial and civil fields.
Chemical Composition:
Stainless steel is an austenitic stainless steel that has a composition of chromium, nickel, and manganese. Its chemical composition is as follows:
| Grade | Chemical Composition (%) | |||||||
| c | si | Mn | P | s | Ni | Cr | Mo | |
| 201 | ≤0.15 | ≤0.75 | 5.5-7.5 | ≤0.06 | ≤ 0.03 | 3.5-5.5 | 16.0-18.0 | - |
| 301 | ≤0.15 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 6.0-8.0 | 16.0-18.0 | - |
| 304 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 8.0-10.5 | 18.0-20.0 | - |
| 304L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤ 0.03 | 9.0-13.0 | 18.0-20.0 | - |
| 316 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 |
| 316Ti | ≤0.08 | ≤0.75 | ≤2.0 | ≤0.045 | ≤0.03 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 |
| 310S | ≤0.08 | ≤1.5 | ≤2.0 | ≤0.045 | ≤0.03 | 19-22 | 24-26 | |
| 316L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 12.0-15.0 | 16 .0-1 8.0 | 2.0-3.0 |
| 321 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤ 0.03 | 9.013 | 17.0-1 9.0 | - |
| 405 | ≤0.08 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 0.6 | 11.5-14.5 | |
| 409 | ≤0.08 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 0.6 | 11.5-14.5 | |
| 409L | ≤0.08 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 0.6 | 11.5-14.5 | |
| 410 | ≤0.15 | ≤1.0 | ≤1.0 | ≤0.035 | ≤ 0.03 | - | 11.5-13.5 | - |
| 430 | ≤0.12 | ≤0.75 | ≤1.0 | ≤0.040 | ≤ 0.03 | ≤0.60 | 16.0-18.0 | - |
| 420 | ≤0.05 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 0.75 | 12-14 | 0.5 |
| 430 | ≤0.12 | ≤1.0 | ≤1.0 | ≤0.04 | 0.03 | 0.5 | 16-18 | 0.75 |
| 444 | ≤0.025 | ≤1.0 | ≤1.0 | ≤0.04 | 0.03 | 1 | 17.5-19.5 | 1.75-2.5 |
| 904L | ≤0.02 | ≤1.0 | ≤2.0 | ≤0.045 | 0.035 | 23-28 | 19-23 | 4.0-5.0 |
| 2205 | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.03 | 0.02 | 4.5-6.5 | 22.0-23.0 | 3.0-3.5 |
| 2507 | ≤0.03 | ≤0.8 | ≤1.0 | ≤0.035 | 0.02 | 6.0-8.0 | 24-26 | 3.0-5.0 |
Hot Rolled and Cold Rolled
Stainless steel products can be manufactured using either hot rolled or cold rolled techniques. Hot rolling involves heating the steel above its recrystallization temperature and then passing it through rollers to form the desired shape. Cold rolling, on the other hand, involves passing the steel through rollers at room temperature to reduce its thickness.
Different Finishes
Stainless steel comes in different finishes that can affect its appearance and properties. Here are some common finishes:
| Different Finishes |
| 2B: This is a smooth, reflective finish that is produced by cold rolling followed by annealing and descaling. |
| No.1: This is a rough, dull finish that is produced by hot rolling followed by annealing and pickling. |
| SB: This is a satin finish that is produced by applying a fine abrasive material to the surface of the steel. |
| BA: This is a bright, mirror-like finish that is produced by buffing the surface of the steel with a fine abrasive material. |
| HL: This is a hairline finish that is produced by brushing the surface of the steel with a fine abrasive material. |
| Mirror: This is a highly reflective finish that is produced by polishing the surface of the steel with a very fine abrasive material. |
Stainless Steel Square Pipe/Stainless Steel Square Tube
* Classification: Stainless steel welded square pipe, stainless steel seamless square tube
* Side Length: 4.0*4.0mm - 300.0*300.0mm
* Wall Thickness: 0.25mm - 8.0mm
* Length: Normally 6.0m, or cut into small pieces
* Tolerance: According to the standard
* Technique: Cold drawn/Hot Rolled
* Surface: Hairline, Polished, 180#, 320#, 400#, Bright Anneal,400#, 500#, 600#
* Standard: ASTM A312, ASTM A358, ASTM A249, ASTM A269, ASTM A554, ASTM A790, DIN 17457, JIS G3459, etc
*Grade: 201, 304, 304L, 316, 316L, 321, 317L, etc
PLEASE CONTACT THE SALES TEAM FOR THE DETAILED STOCK LIST
FAQ:
1. Can I get free samples?
A: Yes, we can provide you the free samples, but you need to bear their own delivery costs.
2. Can I request to change the form of packaging and transportation?
A: Yes, We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.
3. Can I request to advance the shipment?
A: It should be depends on whether there is sufficient inventory in our warehouse.
4. Can I have my own Logo on the product?
A: Yes, you can send us your drawing and we can make your logo, but you have to bear their own the cost.
5. Can you produce the products according to my own drawings?
A: Yes, we can produce the products according to your drawings that will be most satisfy you.
6. Which price terms could accepted?
A: FOB,CIF all acceptable.
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