Filiz Steel stands out as a premier manufacturer and reliable supplier located in Istanbul, Turkey, with a focus on high-quality ST 35 and ST 35.8 tubing. The company prides itself on its dedication to precision engineering, top-notch materials, and adherence to international quality standards. Filiz Steel caters to a wide array of industries, including energy, automotive, construction, and machinery. They provide both seamless and welded tubing solutions customized to meet client needs, ensuring dependable performance even in the most challenging applications. With a strong emphasis on innovation, customer satisfaction, and global distribution, Filiz Steel has earned a solid reputation as a trustworthy partner in the steel tubing market throughout Europe, the Middle East, and beyond.
ST 35 and ST 35.8 tubing are low-carbon steel grades that are frequently utilized for seamless pressure pipes. These materials typically contain up to 0.17% carbon, 0.35–0.70% manganese, along with trace amounts of phosphorus and sulfur. They are known for their excellent weldability and machinability. In terms of mechanical properties, they boast a tensile strength range of 480–640 MPa and a yield strength of around 255 MPa. With a minimum elongation of 25%, the tubing showcases impressive ductility and toughness. ST 35.8 is often normalized to boost its mechanical strength, making it suitable for high-temperature and pressure applications.
| Specifications | ASME SA588 / ASTM A588 |
| Grade | Gr A / Gr B Corten Steel Plates |
| Thickness | from 0.8 mm to 50mm |
| Width | from 750mm to 1500mm |
| Length | up to 12,000mm |
| Type | Weathering Steel / Weather Resistant / Corten Steel |
| Process | Hot-Rolled (HR) |
| Applications | concrete industry, metallurgy, fan industry, coal industry, mining machinery, construction machinery, etc. |
| Grade | C % | Si % | Mn % | P % | S % | Cr % | V % | Ni % | Cu % |
| Grade A | 0.19 | 0.30-0.65 | 0.80-1.25 | 0.04 | 0.05 | 0.40-0.65 | 0.02-0.10 | 0.40 | 0.25-0.5 |
| Grade B | ≤0.20 | 0.15-0.50 | 0.75-1.35 | 0.040 | 0.050 | 0.40-0.70 | 0.01-0.10 | ≤0.50 | ≤0.50 |
| Grade | Thickness | Yield Strength ReH[N/mm2]transv.min | TensileStrength Rm[N/mm2]transv |
| ASTM A588 | 0mm-100mm | 340 MPa | 480 MPa |
| 102mm-127mm | 320 MPa | 460 MPa | |
| 127mm-203mm | 290 MPa | 430 MPa |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| THICKNESS | WIDTH | LENGTH | |
| A588 Steel | 3/16″ – 8″ | 48″ – 120″ | Up to 480″ |
| Width | Length | (lbs/ft) Weight |
| 48.00″ | 120.00″ | 15.0315 |
| 60.00″ | 120.00″ | 10.0210 |
| 48.00″ | 120.00″ | 20.0420 |
| 48.00″ | 120.00″ | 10.0210 |
The versatility of ST 35 and ST 35.8 tubing makes them popular across various industries due to their strength, thermal resistance, and ability to handle pressure. They are commonly found in boiler tubes, heat exchangers, superheaters, and pipeline systems in power plants and refineries. In the automotive industry, these tubes are used in hydraulic systems and engine components. In construction and machinery manufacturing, ST 35 tubing is preferred for structural and mechanical applications where reliability and durability are crucial. Its compatibility with welding and forming processes makes it perfect for custom fabrication, while its corrosion resistance under pressure ensures it’s suitable for transporting fluids and gases.
Filiz Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Istanbul, Turkey.
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