● Welding (Welding) wheel (wheel group) can be divided into driving wheel units and idler wheel units formed. ● Wheel group driving wheel units and idler wheel units composed of small size, light weight, suitable for pipeline construction site use. ● Wheel group of bilateral synchronous driving wheel sets mining operation, mining DC motor drive, ensuring the smooth operation of small diameter. ● Wheel Tread Adjustment group of mining bolt design, quick and easy adjustment. ● adoption of high heat plastic coating, effectively enhance the friction transmission power, and protection of the workpiece is not due to roll and rubs. ● control of modular design of circuit boards, mining cable remote control (speed, automatic positive / negative) wire length 2M, and a foot switch
