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.

成熟交bgmbgmbgm在线| 精品少妇人妻av一区二区三区| 和少妇人妻邻居做爰无码| 放荡娇妻张开腿任人玩h| 精品久久久久久久免费人妻| 大j8黑人bbw巨大怪物| 日韩精品极品视频在线观看免费| 男生自慰出精gay2022| 成熟丰满熟妇老狼xxxxx| 男女做爰猛烈叫床视频动态图| 免费人成年激情视频在线观看| 日韩精品极品视频在线观看免费| 污污污污污污网站| 亚洲 欧美 激情 小说 另类| 国产农村熟妇videos| 公与3个熄乱理在线播放| 体育生gary猛烈gary| 日本三级在线播放| 曰本丰满熟妇xxxx性| 性大毛片视频| 老板把我抱到办公室揉我胸视频| 人妻熟人中文字幕一区二区| 亚洲av无码乱码国产精品fc2| 亚洲日韩国产av无码无码精品| 一 级 黄 色 片一录像厅| 握住校花两团雪乳高h| 波多野结衣作品| 久久久久久精品无码| 极品白嫩的小少妇| 荫蒂添的好舒服视频囗交| 国产免费一区二区三区在线观看| 少妇扒开腿让我爽了一夜| 国产av无遮挡喷水白浆桃花视频| 国产网红女主播精品视频| 嗯啊小sao货奶头好硬视频| 啦啦啦中文免费视频高清观看| 精品香蕉99久久久久网站| 解开她的内衣含着她的柔软| 精品欧美一区二区三区久久久| 成人性生交大片免费看京东小视频| 国产午夜视频在线观看|