ISO 65
ISO 65 Steel Pipe
ISO 65 is the international standard that specifies Carbon steel tubes suitable for screwing. Developed by the International Organization for Standardization (ISO), this standard ensures the highest quality and precision for steel tubes. UNIACERO, as a leading international trading company, proudly exports these steel tubes from China to clients worldwide. Our tubes are manufactured in compliance with ISO standard, ensuring seamless integration into your projects. Whether you’re in construction, engineering, or any industry requiring robust steel tubes, our products guarantee durability, precision, and excellence.
ISO 65 Specification
Our steel tubes come in four distinct series:
Heavy series: Suitable for both seamless and welded steel tubes.
Medium series: Ideal for seamless and welded steel tubes.
| Production Standard | ISO 65 |
| Manufacturing Processes | SMLS (Hot Finished Seamless) |
| SMLS (Cold – Finished Seamless) | |
| ERW (Electric Resistance Welding) | |
| Outside Diameter | 10.3mm – 165.1mm (1/8″ – 6″) |
| Wall Thickness | 1.8 – 21.9 mm |
| Pipe Length | 6 meters, 12 meters, or customized. |
| Steel Grade | TS.O |
| TW.O | |
| Corrosion Prevention | Lacquer, Varnish, Oiling, Galvanizing |
| End Processes | Square Cut, Bevelling, Threading, Grooving |
| Further Processing | Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding |
ISO 65 Dimension Table
The dimensions of our steel tubes are in strict adherence to the ISO 65 standard. From the smallest 6 DN to the largest 150 DN, each tube is crafted to perfection, ensuring a snug fit for your requirements. The specified outside diameter, thickness, and masses per unit length are detailed, providing clarity and assurance in your selection.
| Thickness according to the series | ||||||
|---|---|---|---|---|---|---|
| DN | Designation of thread | Outside Diameter
mm | Heavy series mm | Medium series mm | Light series 1 mm | Light series 2 mm |
| 6 | 1/8 | 10.2 | 2.6 | 2.0 | 1.8 | 1.8 |
| 8 | 1/4 | 13.5 | 2.9 | 2.3 | 2.0 | 1.8 |
| 10 | 3/8 | 17.2 | 2.9 | 2.3 | 2.0 | 1.8 |
| 15 | 1/2 | 21.3 | 3.2 | 2.6 | 2.3 | 2.0 |
| 20 | 3/4 | 26.9 | 3.2 | 2.6 | 2.3 | 2.3 |
| 25 | 1 | 33.7 | 4.0 | 3.2 | 2.9 | 2.6 |
| 32 | 1 1/4 | 42.4 | 4.0 | 3.2 | 2.9 | 2.6 |
| 40 | 1 1/2 | 48.3 | 4.0 | 3.2 | 2.9 | 2.9 |
| 50 | 2 | 60.3 | 4.5 | 3.6 | 3.2 | 2.9 |
| 65 | 2 1/2 | 76.1 | 4.5 | 3.6 | 3.2 | 3.2 |
| 80 | 3 | 88.9 | 5.0 | 4.0 | 3.6 | 3.2 |
| 100 | 4 | 114.3 | 5.4 | 4.5 | 4.0 | 3.6 |
| 125 | 5 | 139.7 | 5.4 | 5.0 | – | – |
| 150 | 6 | 165.1 | 5.4 | 5.0 | – | – |
Chemical Requirements of ISO 65
Our steel tubes are made from the finest materials, ensuring they meet the stringent chemical requirements of ISO 65. This ensures longevity, resistance to wear and tear, and the ability to withstand challenging environments.
| Steel Grade Designation | Tensile Strength | Minimum Elongation After Fracture | Chemical composition ladle Analysis % max. | ||
|---|---|---|---|---|---|
| Seamless | Welded | N/mm2 | % | P | S |
| TS.O | TW.O | 320 to 520 | 15 | 0.06 | 0.06 |
Mechanical Requirements of ISO 65
Mechanical integrity is at the heart of our steel tubes. They are designed to withstand pressure, weight, and the rigors of daily use, ensuring they remain functional and intact for years to come.
| Steel Grade Designation | Tensile Strength | Minimum Elongation After Fracture | Chemical composition ladle Analysis % max. | ||
|---|---|---|---|---|---|
| Seamless | Welded | N/mm2 | % | P | S |
| TS.O | TW.O | 320 to 520 | 15 | 0.06 | 0.06 |
Steel Grades in ISO 65
We offer two primary steel grades for our tubes: TS and TW. Each grade is chosen based on its unique properties, ensuring that you have the perfect tube for your specific needs.
- TS
- TW
