Square shaped stainless steel pipe

Sunning Steel is a leading supplier of high quality stainless steel decorative pipes, offering a wide range of products for many decorative and structural applications.

Description: Square stainless steel pipe profile

These products are priced lower than seamless pipes.
Stainless steel welded pipes are produced according to the technical conditions of ASTM A213. The grade of straight seam pipes is determined by ASTM A312. Issue 5632, 2014. Labeling, packaging, transportation, and storage are carried out by ASTM.
Stainless steel rolled materials undergo impact bending, impact toughness, stretching, flattening, distribution, bending, and rolling tests. In addition, pipeline hydraulic tests were conducted according to ASTM with a pressure retention rate of 5 seconds. Use non-destructive methods (ultrasonic, current flow, magnetic or X-ray) to inspect the quality of welds.
Sunning Steel Limited provides stainless steel welded pipes suitable for construction, industry, and other fields. The product meets recognized quality standards and has the following parameters:
Diameter 8 to 406.4 millimeters;
Wall thickness of 0.4 to 4 mm;
Length -6000 mm;
The cross-section is circular.
Our product catalog offers products with mirror, matte, and polished surfaces.
Mirror tubes are aesthetically attractive and are used in medical, food, staircase handrails, and chimneys. The polished tube has a smooth surface and is suitable for metal structure construction, interior design, and furniture production. Untreated matte tubes. Used for installing heating systems, drainage systems, pipelines, and manufacturing various structures that do not require aesthetic appeal.


  1. High mechanical strength
    Pipes are resistant to various shock and deformation loads and wear, durable and practically do not lose their quality over time.
  2. Corrosion resistance
    Stainless steel pipes do not oxidize under the influence of moisture and aggressive environments. They are chemically inert and do not interact with liquids and gases.
  3. Resistance to changes in temperature and humidity
    Pipes are little susceptible to changes in linear dimensions when temperatures change and do not respond to changes in humidity and pressure, which allows them to be used in the most severe conditions.
  4. High ductility
    Stainless steel pipes are easy to process because they are ductile and not brittle, which allows them to be bent at the desired angles and given the desired shape.
  5. Aesthetic appearance
    Stainless steel looks great even without additional processing - painting or polishing.

Application area

We offer a wide range of clients covering a wide range of industries such as racing, sailing, food services, construction and healthcare.


Product Specification and Size of Stainless Steel Decorative Pipe


WALL THICKNESS: 0.25-3.0 mm

2): SURFACE: Surface: 180HL, 320G, 400G, 500G, 600G



5): CLASS: CLASS: AISI 304, 304L, 316L, 316Ti, 321, 309S, 310S, 201, 202, 430, etc.

Scope of application of welded pipes

Reliable and relatively lightweight welded stainless steel pipes are used for assembling heat exchangers and heaters, when laying utilities and pipelines in enterprises:

chemical and oil refining industries;

mechanical engineering and shipbuilding;

food sector.

Rectangular pipes can act as the basis of many metal structures. Rectangular rolled products are used to install fences and railings, load-bearing structures, furniture frames and vehicle elements. The advantages of such products are low weight and high strength. Manufactured from steel grades AISI 201, 304, 430.

Square pipes can withstand high loads, so they are installed as a reinforcing element in metal structures. Most often, square pipes are used when installing the frame of a structure or assembling a structure for a car body. Manufactured from steel grades AISI 430, 304.

Round pipes are the most common. They are widely used in pipelines for transporting liquids and gases under high pressure. The products are used in food, chemical, oil and other industries. We offer structural and special-purpose pipes. Manufactured from steel grades AISI 304, 316, 201.

Oval pipes have increased strength and a mirror surface compared to round products. Due to this, they are used as decorative elements in metal structures in furniture production and mechanical engineering. Manufactured from steel grades AISI 304, 316, 201.

Online request

If you have any needs or questions, please leave a message, we will reply to you within 24 hours!
Email: [email protected]
Phone/WeChat/Whatsappt: 8613673622930
Skype: rebecca_jianhui
Fax/Tel: +8613673622930

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