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Thabiso Steel is a well-respected manufacturer and supplier located in Cape Town, South Africa, specializing in high-quality J356 tubing that meets the demanding needs of today’s industries. Known for its precision engineering and top-notch material integrity, Thabiso Steel crafts J356 tubes that deliver outstanding performance, durability, and precise dimensions. These tubes are specifically designed to thrive in high-pressure, high-temperature, and dynamic mechanical settings. With state-of-the-art production facilities and rigorous quality control measures, the company offers J356 tubing solutions for various sectors, including automotive, construction, oil and gas, and heavy machinery, catering to both standard and custom specifications.
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What is J356Tubing?
J356 tubing is a low-carbon steel, widely utilized in structural and fluid systems applications. Its material composition is generally carbon (0.15-0.20%), manganese (0.30-0.60%), phosphorus (up to 0.04%), and sulfur (up to 0.05%). J356 tubing is famous for its combination of strength, ductility, and weldability and provides good mechanical properties like tensile strength (45-60 ksi), yield strength (30-45 ksi), and elongation (up to 30%). These characteristics make it suitable for automotive, industrial, and construction applications where strength and performance under stress are critical.
SAE J356 Tubing Specifications
| Grade: | ASME/ASTM SA179, SA192, SA210, SA178, SA214, API 5L |
|---|---|
| Size: | 1/8” NB TO 24” NB Sch 40/80/160/XXS |
| Form | Round, Square, Rectangular, Coil, U Tube, |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Bevelled End |
| Type | Seamless / ERW / Welded |
| Certification For Carbon | Mill Test Certificate as per EN 10204 / 3.2B |
| General Requirements | ASTM A 530/A 530M |
| Dimensional Tolerances | ANSI B 36.10 |
| OD Range | 1.250″ – 6.000″ (30-150mm) |
| Wall Range | 0.095″ – 1.000″ (.2.5-25mm) |
J356 Tubing Chemical Composition
| CHEMICAL REQUIREMENTS | ||
| Element | Cast or Heat Analysis: Weight % | |
| J356 | J356 Type-A | |
| Carbon | 0.06 Min/0.18 Max | 0.02 Min/0.18 Max |
| Manganese | 0.30 Min/0.60 Max | 0.10 Min/0.60 Max |
| Phosphorus | 0.04 Max | 0.04 Max |
| Sulfur | 0.06 Max | 0.05 Max |
J356 Tubing Mechanical Properties
| MECHANICAL PROPERTIES | |
| Properties | Values |
| Yield Strength (Min) | 25,000 PSI |
| Tensile Strength (Min.) | 45,000 PSI |
| Elongation in 2” (Min) | 35% a |
| Hardness (Rockwell B)(Max) | 65 b |
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We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Top Manufacturer and Supplier of SAE J356 in Cape Town, South Africa
Jaxon Steel is a leading manufacturer and distributor of high-quality J356 Tubing in Cape Town, South Africa. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel, and Galvanized Steel, with a primary focus on J356 Tubing. Our extensive inventory also includes Tubes, Pipes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Committed to fast delivery and exceptional customer service, we source only the finest raw materials to ensure superior strength, durability, and performance for demanding industrial applications. Contact us today for all your J356 Tubing requirements!
SAE J356 Tubing Outside Diameter Tolerances
| TUBING WALL THICKNESS TOLERANCES | |||
|---|---|---|---|
| Nominal Wall Thickness (Inches) |
Nominal Tube OD Through 1” (+/- Inches) |
Nominal Tube OD Over 1” Through 2” (+/- Inches) |
Nominal Tube OD Over 2” Through 4” (+/- Inches) |
| .028 (22 Ga) | .002/.003 | .003/.003 | .003/.003 |
| .035 (20 Ga) | .002/.004 | .002/.004 | .002/.004 |
| .042 (19 Ga) | .002/.004 | .002/.004 | .002/.005 |
| .049 (18 Ga) | .004/.005 | .003/.005 | .004/.008 |
| .058 (17 Ga) | .006/.006 | .004/.008 | .004/.008 |
| .065 (16 Ga) | .006/.006 | .004/.008 | .004/.008 |
| .072 (15 Ga) | .006/.010 | .006/.010 | .006/.010 |
| .083 (14 Ga) | .006/.010 | .006/.010 | .006/.010 |
| .095 (13 Ga) | .006/.010 | .006/.010 | .006/.010 |
| .100 | .006/.010 | .006/.010 | .006/.010 |
| .109 (12 Ga) | .006/.010 | .006/.010 | .006/.010 |
| .118 | .006/.010 | .006/.010 | .006/.010 |
| .120 (11 Ga) | .006/.010 | .006/.010 | .006/.010 |
| .134 (10 Ga) | .006/.010 | .006/.010 | .006/.010 |
| .148 (9 Ga) | — | .007/.001 | .007/.011 |
| .156 (5/32) | — | .007/.011 | .007/.011 |
| .165 (8 Ga) | — | .007/.011 | .007/.011 |
| .180 (7 Ga) | — | .007/.011 | .007/.011 |
| .197 | — | .008/0.12 | .008/0.12 |
| .203 (6 Ga) | — | .008/0.12 | .008/0.12 |
| .219 (7/32) | — | .008/.012 | .008/.012 |
| .236 | — | .014/.018 | .014/.018 |
| .238 (4 Ga) | — | .014/.018 | .014/.018 |
| .259 (3 Ga) | — | .014/.020 | .014/.020 |
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Types of J356 Tubing






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Uses of J356 Tubing
J356 tubing finds extensive applications across industries because it possesses superior mechanical properties and flexibility. Typical applications involve the manufacturing of automobiles, where it is used as part of fuel lines, brake lines, and structural components. It has the strength to withstand high pressure and remain robust, making fluid transportation systems its best application. Additionally, J356 tubing is used in construction for structural support, in hydraulic applications, and in equipment manufacture requiring strength and corrosion resistance. Its weldability also makes it a popular choice in custom fabrication uses in HVAC, farm equipment, and general engineering, as a consistent solution for numerous applications.
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