What is the price of a 4-inch 15000psi high-pressure mud hose?

  API 7K series high - pressure mud hoses are core products developed by Letone Technology for the harsh working conditions in the oil drilling and production industry. As a national "little giant" enterprise specialized in sophisticated and innovative products, Letone Technology has passed the API Q1 quality management system certification and API 7K product certification. Its developed series of products such as LT301D rotary drilling and shock - absorbing hoses, LT301C high - pressure cement hoses, etc., have become key equipment for oil and gas field development at home and abroad.

This series of hoses uses multi - layer wound high - strength and ultra - flexible steel wires as the reinforcement layer. The inner rubber layer is made of a composite material of UPE (ultra - high molecular weight polyethylene) and HNBR (hydrogenated nitrile butadiene rubber), and the outer rubber layer is a wear - resistant and weather - resistant synthetic rubber, forming a three - layer protection structure of "corrosion - resistant inner layer - high - pressure - resistant middle layer - wear - resistant outer layer". Taking the LT301D type as an example, its operating temperature range covers from - 20℃ to + 121℃. It can stably transport water - based, oil - based mud and cement slurry under a high pressure of 15000Psi (103.4MPa), and its minimum bending radius is only 1000mm, meeting the flexible connection requirements in the narrow space of the drilling platform.

In terms of structural innovation, the API 7K series hoses adopt an equal - diameter design, effectively reducing fluid resistance and turbulent noise. The steel wire winding process of the reinforcement layer has been verified by a CNAS - certified laboratory, and its pulse life can reach more than 100,000 times, an increase of 50% compared with traditional products. Special wear - resistant particles are added to the outer rubber layer. Third - party tests show that its wear resistance exceeds the industry standard by 30%, which is especially suitable for the transportation of sand - containing fracturing fluid.

The products strictly follow the API Spec 7K standard and have passed the inspection by the Quality Inspection Institute of Instrument and Meter Components of the Machinery Industry. The key indicators include: the burst pressure is not less than 2.5 times the working pressure, the H₂S corrosion resistance meets the NACE MR0175 standard, and the fire - resistance test meets the requirement of no leakage under an open fire of 704℃ for 30 minutes. In 2018, the project of "H₂S - resistant, pulse - resistant ultra - high - pressure oil drilling and production conveying hose" completed by Letone Technology in cooperation with Qingdao University of Science and Technology passed the acceptance of the major scientific and technological special project in Henan Province, marking that the technical level of this series of products has reached the domestic leading level.

In application cases, the LT301F ultra - wear - resistant acid fracturing hose has successfully served key domestic projects such as the Tarim Oilfield and the Tuha Oilfield. In the fracturing project in Houston, USA, its average service life per well has exceeded 1200 hours, reducing the replacement frequency by 40% compared with similar products, and significantly reducing the operation cost. At present, this series of hoses has formed a full - specification product line from 2 inches to 6 inches, supporting various connection forms such as integral unions and flanges. The length and pressure grade can be customized according to customer requirements, and it is widely used in key operation links such as drilling, cementing, and fracturing.

As one of the first - batch listed enterprises on the Beijing Stock Exchange (stock code: 832225), Letone Technology relies on its "one academy and four institutes" R & D system and CNAS - certified testing center to continuously promote the technological iteration of the API 7K series hoses. In the future, with the improvement of equipment performance requirements for shale oil and gas development, this series of products will further develop in the directions of ultra - high pressure (above 20000Psi), large diameter (above 8 inches), and intelligent monitoring, providing more reliable fluid transportation solutions for global energy development.