粗一硬一长一进一爽一a级小说,少妇被又大又粗又爽毛片久久黑人,娇小的学生videos16hd,中文字日产幕码三区的做法大全

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.

99国产精品白浆在线观看免费| 夜色福利站www国产在线观看| 亚洲国产精品18久久久久久| 免费a级毛片在线播放不收费| 野花日本大全免费视频720| 被下人玩弄的嫡女np| 亚洲色综合狠狠综合区| 中国妇被黑人xxx猛交| 天堂网在线最新版www中文网| 国产成人a人亚洲精v品无码| 大胆人体艺术| 日本巨大超乳爆乳| 精品国产制服丝袜高跟| 一 级 黄 色 片一录像厅| 处破初破苞一区二区三区| 永久免费av无码网站性色av| 他跨越山海而来电视剧免费观看| 丝袜灬啊灬快灬高潮了AV| 大炕上和亲亲公个取所需| 美女脱内衣让男生揉摸的视频| 亚洲国产av一区二区三区| 天美传媒av妇女干部| 真实刺激交换娇妻13篇| 小处雏一区二区三区精品视频| 熟女肥臀白浆大屁股一区二区| 欧美a一片xxxx片与善交| 好爽毛片一区二区三区色欲| 国产精品自产拍高潮在线观看| 日韩人妻一区二区三区蜜桃视频| 野战肉高h男友和闺蜜| 偷看各类wc女厕嘘嘘近距离| 亚亚洲精品黑人巨大在线播放| 被老外添嫩苞添高潮np| 被男人吃奶跟添下面特舒服| 波多野中文无码av人妻系列视频| 婷婷丁香五月久久综合啪啪图区| 巨大巨粗巨长 黑人长吊| 奇米影视7777久久精品人人爽| 92久久偷偷做嫩草影院免费看| 在公交车上弄到高c了怎么办| 国产做a爱免费视频在线观看|