Spraying process, the requirements of the workpiece no oil, no rust, rough surface uniformity, preheat temperature appropriate hydraulic repair shop, the underlying combined with even and firm, smooth working layers, material particles fusion bonding reliable, well-being hydraulic, wear resistance and good corrosion resistance. The quality of the coating layer surface treatment and coating process have a great relationship, so that the hydraulic repairman, choose the right surface treatment and coating process is very important. In addition, hydraulic repair shop, in the process of spraying and spraying, use a thin metal or copper will be bundled with the unpainted portion adjacent the surface to be coated. Under pressure to ensure the valve setting exact premise, "flexible valve" structure allows the valve reaches the set pressure at operating pressure over 96% are still without leakage. Crosby by the results of our spring safety valve setting check statistics show that the flexible valve flap valve can be pre-discharge point of 98.5% or even 99% of the set pressure, and accurate take-off, the back seat altogether, no leakage. Hydraulic repair shop, Xi'an-through hydraulic maintenance (certification), the Xi'an-Ankang hydraulic hydraulic-repair Limited. Xi'an-hydraulic-repair Ltd. (www.xayeya.com) (www.xayeya.com) is Xi'an, industrial maintenance, installation of leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Xi'an Chengtong hydraulic service leadership with the staff warmly welcome all inquiries negotiations to create Xi'an Chengtong hydraulic service better future.