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Based in Cape Town, South Africa, Boikanyo Sheets and Plates is a leading manufacturer and supplier of premium metal products. We specialize in super duplex steel coils and slitting coils, known for their exceptional strength, corrosion resistance and durability. These high-performance coils are designed for complex applications in the marine, oil and gas, chemical processing and construction industries. With a commitment to quality, innovation and customer satisfaction, Boikanyo Sheets & Plates provides reliable super duplex steel solutions that meet strict industry standards for complex environments.
Super duplex steel coils and slitting coils are a mixture of austenitic and ferritic stainless steel, which generally contains 25% chromium, 7% nickel and 3-4% molybdenum, with traces of nitrogen, manganese, silicon etc. This unique composition prevents pitting, crack corrosion and stress corrosion cracking It ensures excellent resistance. Mechanical properties include tensile strength of 800-1000 MPa, yield strength of 550-750 MPa, and elongation of 15-25%. Known for their high strength, extreme durability and extreme durability, Super Duplex steel coils are ideal for high pressure, high temperature, corrosion applications in demanding applications
| Standards | ASTM A240 / ASME SA240 |
| Thickness | 0.2mm – 5.0mm |
| Width | 3.2mm – 1500mm & bove |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, AS PER CUSTOMER’S REQUIREMENT |
| Hardness | Annealed – pickled (soft), Soft, Hard, Half Hard, Quarter Hard, Spring Hard , 1/4 hard, Yi hard,3/4 hard , full hard , extra hard |
| Test Certificate | Chemical test, Fitting test, Alloy test, Radiography test, Macro and micro-test, Hydrostatic test, Impact test. |
| Finish | Cold rolled stainless steel strips annealed & pickled 2 B Cold rolled stainless steel strips annealed & skin passed 2R Work harden for specific hardness BA/BE/ Matt Finish Cold rolled stainless steel strips |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| Thickness (mm) | Width (mm) | Length (m) |
| 0.5 | 1000 | 250 |
| 0.8 | 1250 | 300 |
| 1 | 1500 | 350 |
| 1.2 | 1750 | 400 |
| 1.5 | 2000 | 450 |
| 2 | 1000 | 500 |
| 2.5 | 1250 | 550 |
| 3 | 1500 | 600 |
| 3.5 | 1750 | 650 |
| 4 | 2000 | 700 |
| 4.5 | 1000 | 750 |
| 5 | 1250 | 800 |
| 6 | 1500 | 850 |
| 7 | 1750 | 900 |
| 8 | 2000 | 950 |
| 9 | 1000 | 1000 |
| 10 | 1250 | 1050 |
| 11 | 1500 | 1100 |
| 12 | 1750 | 1150 |
| 15 | 2000 | 1200 |
| Thick. on base (millimeter) | Unit Wght / Coil (kilogram) |
|---|---|
| 3000 x1000 x3.0 | 78.0 |
| 3000 x1250 x4.5 | 143.0 |
| 3000 x1250 x6.0 | 180.0 |
| 3000 x1250 x8.0 | 210.0 |
Super Duplex steel coils and slitting coils offer unique advantages, including excellent corrosion resistance, especially in aggressive environments such as seawater, chemical and acidic conditions Their high chromium, molybdenum and nitrogen content ensures full excellent resistance to pitting, crack corrosion and stress corrosion. These lines provide extra strength and stability, making them suitable for heavy loads. Because of their excellent durability and fatigue resistance, they perform well at high pressures and extreme temperatures. In addition, super duplex steel coils offer excellent weldability and cost efficiency, making them ideal for industries such as oil and gas, marine and chemical processing.
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