原文：
People's Network window, Lanzhou, Gansu News October 9, according to "Gansuribao" reports: Recently, the largest domestic diameter - 1000 mm diameter long-distance transportation of oil and gas pipelines prototype high-pressure valve manufacture in China, PetroChina Lanzhou Petrochemical Company Machinery Factory All completed, the indicators have reached the design requirements. This indicates that China's large-diameter high-pressure ball valve production started onto the road made its market supplies of foreign products from this break the "unified" monopoly.
It is understood that more than 1000 millimeters in diameter high-pressure valve is China's "West-East" project of major equipment needed for the building. Previously, under China's overall technological level of processing and assembly constraints, "West-East" required large-diameter high-pressure valve to rely solely on imports, not only the products are expensive and difficult to bring after-sales service and other "consequences."
In order to solve this problem, the Petroleum and Natural Gas Group will be long-distance transport oil and gas pipelines to include development of large-diameter high-pressure valve, "Eleventh Five-year" development plan 50 major scientific and technological research projects. After 10 months of hard work, completed spare parts processing, assembly and airtight, liquid density, design and so on under the pressure of the opening and closing tests, high-quality completion of all trial work. The all-welded structure of large-diameter high-pressure valve, the design pressure of 100 kg / square centimeter, reaching similar foreign product standards, marking the area of our province and equipment manufacturing industry in the valve station to a new level. (Gansuribao Yangshi Zhi LUO Xian-qi)
原文来自：http://www.1kongyaji.com/news/html/20091010/n53057.html

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译文：
人民网甘肃视窗兰州10月9日讯 据《甘肃日报》报道：近日，国产口径最大——直径达到1000毫米的油气长途运输管线高压球阀样机制造工作，在中国石油兰州石化公司机械厂全部完成，各项指标均达到设计要求。这标志着我国大口径高压球阀生产开始迈上国产化道路，其市场供应也将从此打破国外产品“一统天下”的垄断局面。
据了解，直径超过1000毫米的高压球阀是我国“西气东输”工程建设所需的重大装备。以前，受我国整体加工装配技术水平限制，“西气东输”所需大口径高压球阀全部依赖进口，不仅产品价格昂贵，而且带来了售后服务困难等“后遗症”。
为了解决这一难题，中石油天然气集团将油气长途运输管线大口径高压球阀研制列入“十一五”发展规划的50项重大科技攻关项目。经过10个月的艰苦奋战，完成了零配件加工、装配和气密、液密、设计压力下的开闭等试验，高质量地完成了全部试制工作。这套全焊接结构的大口径高压球阀，设计压力100公斤/平方厘米，达到了国外同类产品标准，标志着我省装备制造业在阀门领域站上了一个新的高度。(甘肃日报 杨世智 罗显琦)
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