| 摘要 |
A bi-metallic mechanically lined pipe (MLP) having an outer pipe 14 of a first carbon steel based material, and an inner liner 16a of a second corrosion resistant material, characterised in that the inner liner is metallurgically bonded 17 to the outer pipe at the extremities of the outer pipe. It can be metallurgically bonded directly to the outer pipe or through the use of an intermediate layer. The bonding can be done using resistance welding around the circumference of the pipe, using one or more contact rollers within and/or external to the pipes. Alternatively laser welding can be used. The MLP is formed by expanding the inner liner within the outer pipe. |
