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Samia Pipes and Tubes is a trusted manufacturer and supplier of ST 35 / ST 35.8 Tubing, based in Tunis, Tunisia. The company delivers carbon steel tubing built for reliability, pressure handling, and consistent performance in everyday industrial service. With controlled manufacturing processes and strict quality checks, Samia Pipes and Tubes ensures tubing with uniform strength, clean finish, and dependable dimensional accuracy. Known for steady supply, technical understanding, and timely delivery, the company supports construction, mechanical, and industrial projects where durability and cost-effective performance matter most.
ST 35 and ST 35.8 are low-carbon steel grades designed for strength, formability, and dependable performance. Their controlled carbon and manganese content provides good tensile strength, solid yield properties, and excellent weldability. The material offers reliable toughness and uniform mechanical behavior under pressure and moderate temperature conditions. ST 35.8 provides slightly higher strength compared to ST 35, making both grades suitable for structural and pressure applications requiring durability, machinability, and long service life.
| Standard | Grade | C | Si | Mn | P max | S max |
| DIN2391 | St35 | ≤0.17 | ≤0.35 | ≥0.4 | 0.025 | 0.025 |
| Cold drawn(Mandatory) | Cold drawn(Soft) | Cold Drawn and Stress Release | Anneal | Normalizing | ||||||||
| BK1) | BKW1) | (BKS) | (GBK)1) | (NBK)1) | ||||||||
| Grade | Tensile | Elongation | Tensile | Elongation | Tensile | Yield point | Elongation | Tensile | Elongation | Tensile | Yield point | Elongation |
| N/mm2 | % | N/mm2 | % | N/mm2 | N/mm2 | % | N/mm2 | % | N/mm2 | N/mm2 | % | |
| St35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 35 | 340~470 | 235 | 25 |