Pipe is used for bending the bending die sets, no matter what kind of equipment, most of them use pipe, mainly used for oil, Ningbo ... metal circular sawing machine, making teeth for grinding all kinds of special equipment.2, laser welding machines, vertical circular seam welding ... 5 tons, 16 tons, 40 tons, 100 tons, 100 tons of hydraulic punching machines and other equipment.4, multiple medium-sized ...