钢质热煨弯管的环氧粉末+聚丙烯胶带涂层防腐结构施工技术
강질열외만관적배양분말+취병희효대도층방부결구시공기술
Construction Technique of Anticorrosion Structure with Epoxy Powder Plus Polypropylene Adhesive Tape for Hot-bending Steel Bend
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