Coating and bonding strength with basic cleanliness and roughness of the substrate. Before spraying, Yan'an hydraulics, basic surface cleaning, degreasing and surface roughening pretreatment coating process is an important step. Part of the first response spray degreasing treatment with gasoline, acetone, with a file and fine sandpaper, Whetstone will fatigue layer and the oxide layer is removed to expose the metal color. Putty previously used on the surface of the thin coat of adhesive repair and hydraulic maintenance, repeatedly scratching and parts to make full infiltration, hydraulic repair price, then evenly spread to a predetermined size, hydraulic repair factory, and leaving more than finishing the amount. As applied in one direction to move back and forth within the coating it will be wrapped in plastic form air bubbles or pores. Steel coated with a release agent pressure at work, generally require curing at room temperature for 24 hours, heat curing (about 80 ℃) take 2-3 hours. Hydraulic maintenance to find any, Xi'an-through hydraulic maintenance (certification), the Xi'an-Yan'an 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.