Different production methods can be divided into heat pipes, cold-rolled pipes, cold-drawn pipes and extruded pipes.
Because there is no such a big tube puller. The maximum size of the national standard is only 630mm in diameter, and there is nothing bigger. You can try ordering from the manufacturer. If the quantity is large, maybe some manufacturers are willing to contract. In the market. Forget it. However, the existing slotted tubes can basically meet the common requirements.