Njabulo Stainless, based in Cape Town, South Africa, is a trusted manufacturer and supplier of high-quality stainless steel products, including Stainless Steel Rectangle Pipes. Rectangle pipes are hollow structural sections with a rectangular cross-section, offering strength, durability, and versatility for various applications. They are widely used in industries where structural support, mechanical performance, and corrosion resistance are important. Njabulo Stainless produces precision-engineered rectangle pipes with uniform thickness, smooth surfaces, and excellent durability. These pipes are ideal for construction, industrial frameworks, machinery fabrication, and decorative applications, providing reliable, long-lasting performance across diverse sectors.
Stainless Steel Rectangle Pipes are typically made from grades 304, 304L, 316, and 316L stainless steel, offering excellent resistance to corrosion, rust, and harsh environmental conditions. They feature high tensile strength, toughness, and durability, making them suitable for structural and mechanical applications. Their smooth surface prevents rust formation and allows easy cleaning or finishing. These pipes maintain dimensional stability under mechanical stress, pressure, or thermal variations, ensuring a long service life. The combination of strength, corrosion resistance, and versatility makes them ideal for both industrial and aesthetic applications.
| Size | 10 X 20, 12.75 X 25.4, 10 X 30, 15 X 30, 20 X 40, 20 x 50, 25 X 50, 20 x 60, 40 X 60, 40 X 80, 45 X 75, 50 X 100 |
|---|---|
| Grades | TP – 304, 304L, 316, 316L, 201 |
| Standards | A312 – A358 – A409 – A554 – A778 – A789 – A790 |
| Tolerance on Length | Commercial Length: 6000 milimeter +/- 30 milimeter Fix Length: from 1200 milimeter up to 12000 milimeter with a tolerance up to -0/+ 5mm |
| Finish | Polished Grit 120 – 600, Seamless, Welded, Brushed, Pickled, Solution Annealed and Pickled up to O.D. 219.1 milimeter,Mirror Polished |
| PIPE GRADES | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TP304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | ||||
| TP304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-13.0 | ||||
| TP316 | S3160 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |||
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
| Material | Heat | Temperure | Tensile Strength | Yield Strength | Elongation %, Min |
|---|---|---|---|---|---|
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| º F(º C) | |||||
| TP304 | Solution | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP304L | Solution | 1900 (1040) | 70(485) | 25(170) | 35 |
| TP316 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
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The company also conducts various tests to ensure the pipes are of high standard before being shipped out. Some of the tests include Hardness Test, Chemical Analysis via Spectro Analysis, Positive Material Identification (PMI)-Testing, Flattening Test, Micro & Macro Test, Pitting Resistance Test, Flaring Test, and Intergranular Corrosion (IGC)-Test among others. In addition, the documentation is very complete for full traceability and observance of industrial standards.
Yes, stainless steel rectangle pipes can be welded using appropriate welding techniques such as TIG or MIG welding. Proper preparation and filler material are essential for strong, durable welds.
Stainless steel rectangle pipes are highly resistant to corrosion due to their chromium content. However, they may corrode in harsh environments with high chloride exposure or inadequate maintenance.
Yes, stainless steel rectangle pipes can be used for natural gas applications due to their strength, corrosion resistance, and ability to withstand high pressure, ensuring safe and durable performance.
Stainless steel rectangle pipes made from austenitic grades (like 304 and 316) are generally non-magnetic. However, some ferritic or martensitic grades may exhibit magnetic properties.
Stainless Steel Rectangle Pipes are widely used in construction, industrial frameworks, machinery, furniture, and architectural applications. They provide strong and reliable support for structures, frames, handrails, scaffolding, and equipment. In the automotive and engineering sectors, they are used for frames, chassis components, and machinery parts. Their corrosion resistance makes them suitable for outdoor structures and environments exposed to moisture or chemicals. Rectangle pipes are also used in decorative applications, interior design, and fabrication of custom equipment. Overall, they are versatile, durable, and reliable solutions for industries requiring strong and aesthetically appealing stainless steel structural components.
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