The corrosion resistance and weatherability of color polyethylene coated steel pipe were investigated.
试验了彩色聚乙烯涂覆钢管的耐腐蚀性和耐气候性。
The new color polyethylene coated steel pipe developed by applying this analysis has corrosion resistance in severe corrosion environments as well as long weatherability.
应用这些分析结果，不仅可使新的有色聚乙烯涂覆钢管在恶劣腐蚀环境介质情况下具有高的耐腐蚀性，而且有长的耐气候性。
This specification describes the requirements for preparing field joints and damaged areas on 3 Layer polyethylene coated pipes, and the application of Acothane as an external protective system.
本规范规定了处理3lpe涂层管上的补口和损坏区域，以及使用Acothane作为外部防护系统时的要求。
The steel elbow is used as the base stock for polyethylene coating elbow and no-interface circular polyethylene material is coated to the outside of steel elbow.
聚乙烯涂装弯管以钢质弯管为基材，在钢质弯管的外表面涂装无接口的环状聚乙烯材料。
The invention relates to the feed additive technology, in particular to a polyethylene glycol coated potassium iodide and a preparation method thereof.
本发明涉及饲料添加剂技术，特别是一种聚乙二醇包被碘化钾及其制备方法。
The invention relates to the feed additive technology, in particular to a polyethylene glycol coated ferrous sulphate and a preparation method thereof.
本发明涉及饲料添加剂技术，特别是一种聚乙二醇包被硫酸亚铁及其制备方法。
The present invention also discloses hyaluronic acid compositions that have been coated with polyethylene glycol and methods of their use.
本发明还公开了用聚乙二醇包覆的透明质酸组合物以及它们的使用方法。
The present invention also discloses hyaluronic acid compositions that have been coated with polyethylene glycol and methods of their use.
本发明还公开了用聚乙二醇包覆的透明质酸组合物以及它们的使用方法。
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