... no matter what kind of equipment, most of them use pipe, mainly used for oil, Ningbo Yinzhou old Lin Liangyong ... manufacturing:1, Single-head hydraulic bending machine, Double hydraulic pipe bender, pipe reducing machine, metal circular sawing machine, making teeth for ... welding machine, argon welding machine, gas shielded welding machine, spot welder, welding machines directly.3, 5 tons, 16 tons, 40 ...