求翻译：构件制作完毕进行表面除锈处理，除锈等级为Sa2.5 级，表面油漆采用刷红丹防锈漆二度，外漆采用中灰醇酸调合漆二度，漆膜总厚度不宜小于125um；屋架梁，支撑材料以及型钢面漆颜色均为中灰。是什么意思？

The production of components finished surface rust treatment, rust grade level sa2.5 surface paint with the brush Hongdan antirust paint a second outer paint of gray alkyd paint second, the total film thickness of not less than 125um; the color of the roof truss beam, supporting materials and the st

components produced on the surface rust, rust is rated at 2.5 Sa paint surface, brush with 2 red Dan rust paint, lacquer finish, with gray-alkyd paint, paint film 2 total thickness not less than 125 um; roof trusses, steel support material, as well as the paint color is a grayed out.

The component manufacture finished carries on the surface except rust processing, except the rust rank is the Sa2.5 level, the superficial paint uses brushes the red lead antirust paint two degrees, outside the paint uses the ash hydroxy-acid ready mixed paint two degrees, varnish film total thickne

Widget finished surface rust treatment, with the exception of class Sa2.5 rust grade, surface paint using red lead antirust paint brush twice, gray alkyd ready mixed paint in paint finishes second, the film should not be less than the total thickness 125um; roof truss beams, supporting materials and

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