| 25mm Pipe | Seamless black steel pipe with 25mm nominal diameter. |
| 32mm Pipe | Seamless piping in 32mm size suitable for moderate flows. |
| 40mm Pipe | Schedule 40 seamless pipe rated for standard pressure use. |
| 50mm Pipe | 50mm diameter seamless black steel segment for general systems. |
| 65mm Pipe | Seamless pipe with 65mm bore to handle heavier flow. |
| 80mm Pipe | 80mm seamless schedule 40 piping for medium-duty service. |
| 100mm Pipe | 100mm seamless section for larger mechanical runs. |
| 150mm Pipe | 150mm seamless black steel pipe for major mains. |
