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.

国产jk白丝美女裸体在线免费看 | 性爱插插插动态图120秒免费看 | 欧美福利老妇女操大逼 | 午夜无码熟熟妇丰满人妻 | 国产寡妇婬乱a毛片视频1 | 后入内射欧美99二区视频 | 18j禁羞羞在线 | 国产妓女精品一区二区 | 久久久国产精品人妻AⅤ麻豆网红 | 18禁日本美女网站视频 | 欧美揉BBBBB揉BBBBB | 中文字幕在线永久视频观看 | 国产精品538一区二区在线 | 精品人妻少妇嫩草Av无码专医 | 国产一线二线三线在线观看 | 影音先锋女人aV鲁色 | 欧美性猛交Ⅹ乱大交3 | 久久高清欧美国人妻精品 | 无码av亚洲一品精品老司机 | 人妻97精品无码一区二区三区 | 重庆美女揉BBBB搡BBBB | A片 XXXX受爽 | 美国做受XXXⅩ性视频A片秀色 | 国产成人无码免费一区二区三区 | 搡BBBB搡BBB搡视频一级 | 精品无码一区二区Av蜜桃 | 梁家辉在春晚后台哭了3次 无码无套太粗太大太猛视频 | 国产农村妇女一级A片免黑人 | 国产 孟若羽 在线播放 | 欧美一区二区三区蜜桃 | 山东少妇AAA凸凸凸BBB | 漂亮人妻偷人伦BD | 亚洲AV无码区国产乱 | 色妻手机在线免费视频 | 成人高潮AA 毛片免费 | 国产伦精品一区二区三区视频黑人 | 日本一级毛片免费播放 | 国产黄污视频在线观看 | 黄色视频免费观看120秒aaaaa | 无码免费婬AV片在线观看沙滩 | 91人人澡人人妻人人精品 |