一本加勒比hezyo无码专区,97久久久久人妻精品专区,国产高潮国产高潮久久久,全免费a级毛片免费看网站

PRODUCTS

Oil production machinery
Pipe products Oil production machinery Castings and forgings

  Sucker rod is one of our main products with the essence of advanced technology from home and abroad. Different categories are organized and manufactured in the accordance with SY/T5029, SY/T6272 and API SPEC 11B, including sucker rods of Grade D, Grade HL and HY, ultra-high strength and polished of ultra-high strength and special sucker rod according to user’s requirements. Some of them are authorized to use API monogram and China Industrial Permit.
  In the manufacturing process, the advanced German direct reading spectrometer is used for material analysis; the magnetic leakage detector is used for flaw detection on the production line one by one; the far-infrared thermometer is used to monitor the forging heating temperature during forging; the thermal insulation or air cooling device is implemented according to the requirements of rod body material to control the cooling rate after forging; the fluorescent magnetic particle detector is used to inspect the forged part of the sucker rod after grinding; the forged rod body is tempered to eliminate the stress in the heating zone and the strength is checked by the hot stretch straightening; the rod body is reinforced by overall surface shot blasting to improve the fatigue strength of the rod before threading; the CNC hex lathe is used for machining of the rod head to realize the PLC industrial control automation; the processing accuracy is rechecked one by one after threading with a complete quality assurance system.
  Sub-surface sucker rod pump is one of main equipment in oil production. The pumps are made through advanced surface nickel and phosphate plating, carbonitriding and carbonnitroboriding featured in corrosion resistance, wear resistance, reliability, durability, and high efficiency. In 2011, the pump and its parts used to be authorized to API monogram.
  The main products:tubular pump, rod pump, multi-functional pump, inclined well pump, sand preventing pump, feedback pump, with Φ 32 - Φ 102mm and strokes of 1.8-8m.

亚洲av成人无码一二三在线观看| 亚洲日韩精品无码专区网址| 欧美性受xxxx黑人xyx性爽| 青青国产揄拍视频| 曰欧一片内射vα在线影院| 亚洲成a∨人片在线观看无码| 人妻巨大乳hd免费看| 好大好深好猛好爽视频免费| 99精品国产在热久久无码| 中文字幕亚洲乱码熟女在线萌芽| 国产在线aaa片一区二区99| 久久免费看少妇高潮v片特黄| 国产亚洲av夜间福利香蕉149| 亚洲国产精品va在线看黑人| 欲妇荡岳丰满少妇岳| 国产精品久久久久久久久岛国| 日韩高清亚洲日韩精品一区二区| 色欲av无码一区二区人妻| 日韩少妇内射免费播放| 免费a级毛片樱桃视频| 亚洲中文字幕无码中字| 亚洲色大成网站www久久九九| 免费大片黄在线观看| 亚洲精品~无码抽插| 精品国产三级a在线观看| 亚洲国产精品无码一线岛国| 国产乡下妇女做爰| 狠狠色丁香婷婷综合| 亚洲中文字幕久久精品无码app| 日韩精品中文字幕无码专区| 国产精品国产精品国产专区不卡| 国产精一品亚洲二区在线播放| 精品日韩欧美一区二区在线播放| 四虎影视成人永久免费观看视频| 日韩内射美女片在线观看网站| 人妻少妇精品无码专区app| 亚洲午夜精品久久久久久浪潮| 国产成人精品无码一区二区老年人| 18分钟处破好疼哭视频在线观看| 日本欧美大码a在线观看| 国产精品视频二区不卡|