大战熟女丰满人妻AV,18禁免费久久久久久久,人妻互换AV无码打压3p,国产 婬片A片AAA片欧美,成人欧美一区二区三区黑人动态图
PRODUCTS

Pipe products
Pipe products Oil production machinery Castings and forgings

  The Technical Center of the company has developed new products of API and Non-API series, like High-collapse, Anti-H2S Tubing & Casing, thermal application Tubing & Casing, Drill pipe body, line pipe, special drift casing, perforating barrel, insulated tubing, super strength sucker rod, pumping unit with high strength. Many of them have been tested and evaluated by authoritative departments, and been exported to America, Russia, Middle-East, Southeast Asia etc.
  On November 28, 2007, during the centralized procurement of Tubing & Casing on CNPC Energy Ahead for 2008, the company continued to be qualified for the supply of API Tubing & Casing to all the oil fields of CNPC in 2008. The company believes that with the continuous development and application of new products and technologies, it will meet the needs of the international and domestic petroleum industry in the high-end field, effectively improve the competitiveness of the company's products, enhance the company's position in the industry, create good business performance, and maintain the company's steady, high-speed and long-term development.
  Capacity:Up to end of 2007, the capacity is that Rolling: 400,000 tons, Upsetting: 100,000 tons, Heat treatment: 200,000 tons(high grade OCTG), threading: 350,000 tons(finished tubing and casing).
  Product features:high purity, stable chemical compositions, good surface, high precision of geometric dimensions, excellent comprehensive mechanical and technological properties.
  Key equipment: the key equipment for tubing & casing production line are introduced from Europe, Japan and large-scale professional manufacturers in China. The whole process of manufacturing is controlled by computer automation equipped with professional, complete and advanced online and offline inspection and testing equipment. There are advanced automatic monitoring, temperature control system and pipe rotating quenching system with internal and external spraying water on two heat treatment lines. In 2006, a Multi-functional automatic Ultrasonic Testing Machine was imported from UK with the most advanced detection technology, including oblique and lamination inspection in addition to transverse & longitudinal inspection and full-length wall thickness.

9久久9毛片又大又硬又粗 | 性无码专区免费看7777 | 国产精品高清无码在线观看 | 91在线精品无码秘 入口九色 | 麻豆91熟妇人妻中文字幕茄子 | 五月丁香婷婷狠狠爱 | 国产精品无码久久久久沙龙 | 三级片国产无遮挡白浆 | 欧美馒头BBBB高潮喷水 | 色欧美片视频在线观看 | 农村女少妇系列一级片 | 乱码丰满人妻一二三区竹菊影视 | 香蕉一级婬片A片久久精 | 近親相姦中出し親子白木优子 | 美女裸体无遮挡免费视频网站 | 梁家辉在春晚后台哭了3次 无码无套太粗太大太猛视频 | 91人妻无码专区A片奶水牛牛 | 亚洲一区免费在线观看 | 无码在线免费观看视频 | 国产精品国产三级国芦专播精品人 | 蜜桃AV秘 无码二三区 | 台湾无码婬片A片AAA毛片 | 欧美丰满少妇东北少妇 | 亚洲国产精品无码久久久久久 | 国产AV久久久海角社区 | 狂野欧美性猛交XXⅩ大乱3超A | 无码粉嫩虎白一线天在线观看视频 | 一级黄色免费观看视频 | 国产精品久久久久久久久夜色 | 污黄视频在线免费观看 | 国产老师娇喘喷白浆在线播放 | 麻豆91茄子 在线观看 | 国产又粗又猛又爽又黄 | 国产高清无码在现观看 | 午夜一级毛片在线免费观看 | 16videosex性欧美69 | 美女裸体啪啪挤奶黄网站免费看 | aV国产乱码一区二区三在线观看 | 午夜视频在线观看免费视频 | 无码人妻精品一区二区三区欧美色涩 | 成全老司机黄色视频 |