The machine uses a small impact on the grid three-phase power grid capacity requirements with respect to the same capacity of a single-phase welder much lower. Welding transformer with a center-tapped secondary use of six-phase half-wave rectifier circuit copper welding, providing ripple coefficient is small and there is no zero-crossing point of the DC power supply during welding, weld quality can be fully guaranteed. Manual plasma cutting method using heat welding cutting current, the cutting edge of the heat-affected zone of plastic welding, which gives stainless steel bright white "pollution" on a circle slightly color gradient. At the same time, through the regulation of welding specifications, cutting instant strong airflow gun discharged in the molten steel cut at the cutting edge of "blow" from the texture circle randomly formed after the completion of cutting the metal to cool and solidify as a very fine cut mark, with the intermediate flat polished stainless steel plate in contrast texture. This formation of random effects with a certain chance, but is the phenomenon in certain welding specifications inevitably produce. Copper welding _ Huashi welding (certification) _ welding by Huizhou City Huashi Welding Equipment Co. Huizhou City Huashi Welding Equipment Co., Ltd. (www.hwashi.com) Guangdong Huizhou, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Huashi welding in leadership with the staff warmly welcome all inquiries negotiations to create Huashi welding a better future.