1改性聚乙烯和共聚物底胶生产工艺自80年代初我国研制成功埋地钢质管道聚乙烯(黄夹克)防腐技术以来,夹克防腐管在我国获得了广泛的应用。“一步法”和“管中管”技术更为泡沫保温夹克管的应用提供了技术保证。随着在陕京线全线应用三层防腐结构以来,这项先进防腐技术也已为业内 1 modified polyethylene and copolymer primer production process Since the early 80’s successful development of our country buried steel pipe polyethylene (yellow jacket) anti-corrosion technology, jacket anti-corrosion pipe in our country has been widely used. “One-step” and “tube-in-tube” technology provide a more technical guarantee for the application of foam tube insulation. With the application of three-tier anti-corrosion structure throughout Shaanxi-Beijing line, this advanced anti-corrosion technology has also been applied in the industry