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UNDERLAYER TREATMENT SOLUTION, METHOD FOR MANUFACTURING ORGANIC COATED GALVANIZED STEEL PIPE USING THE SAME AND ORGANIC COATED GALVANIZED STEEL PIPE
UNDERLAYER TREATMENT SOLUTION, METHOD FOR MANUFACTURING ORGANIC COATED GALVANIZED STEEL PIPE USING THE SAME AND ORGANIC COATED GALVANIZED STEEL PIPE
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机译:底层处理解决方案,使用相同和有机涂层的镀锌钢管制造有机涂层的镀锌钢管的方法
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摘要
PROBLEM TO BE SOLVED: To provide an underlayer treatment solution capable of forming an underlayer allowing increase of adhesion to an organic resin layer even on a galvanized layer.SOLUTION: The underlayer treatment solution comprises: an aqueous solvent; a zirconium compound having a concentration of 0.05-10.50 mass% in terms of metal Zr; a vanadium compound having a concentration of 0.004-0.400 mass% in terms of metal V; an ammonium phosphate having a concentration of 0.07-7.50 mass% in terms of phosphate ions; a silane coupling agent having a concentration of 0.1-10 mass% in terms of a solid content and/or a hydrolytic condensate thereof; and a silica compound having a concentration of 0.2-10 mass% in terms of a solid content and has a pH of 8-12.SELECTED DRAWING: None
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