These Non-Sparking Chain Pipe Wrench are made of Aluminum Bronze and Beryllium Copper, it is a high quality grade beryllium copper alloy material and a standard grade aluminum-bronze alloy. These tools are non-magnetic and non-corrosion, very suitable used for LPG and LNG vessels, and oil-gas industry etc.
| L mm | Dmax mm | Weight (g) | |
| Aluminum Bronze | Beryllium Copper | ||
| 600 | 100 | 3605 | 3955 |
| 600 | 150 | 4200 | 4650 |
| 900 | 200 | 7800 | 8600 |
| 900 | 300 | 9000 | 9810 |