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78 Series 73 Series API HOSE FITTINGS
77 Series Parker hose fittings
SS316 Stainless Steel 43 series Hose Fittings,Metric adapters,Verious types for your option.
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SAE adapters ,large stocks

we have a large inventory of Parker 43/71/56 series ＆ HY series compatiable Hydraulic Crimp Hose Fittings, Contact us Now!

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HAINAR Hydraulics CO., Ltd. commenced manufacturing hydraulics hose fittings, adapters and hydraulic hose assembly in 2007, Our product range and main product line is for High-pressure hydraulic fittings and hose assembly.

After 14 years develop, HAINAR Hydraulics got a good reputation in domestic customer and oversea customers. We supply the hydraulic high-pressure hose assembly and fittings to machinery factory in domestic market. Such like injection molding machine, Construction machinery, mining machinery and drilling machine Fishing Equipment for ship etc. Now we have 40% of our hydraulic hose fittings, adapters and hydraulic quick couplings are exported to Western Europe, Eastern Europe, North American, South American and South East Asia.

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  • How to ensure reliable sealing of high-pressure tube fittings with O-ring seals?

    O-ring Both SAE flange seals and O-ring end seals are sealed by O-rings. These fittings are generally used in applications with very high pressure and the reliability requirements for machinery equipment are also very high. These application occasions are generally static pressure seals. How can we ensure the reliability of O-ring seals The sealing principle of O-rings used in static pressure sealing After the O-ring is installed in the sealing groove, its cross-section is subjected to contact pressure, resulting in elastic deformation, and generates a initial contact pressure P0 on the con...

  • Production safety hazard – low-quality hoses

    In the early 21st century, a liquid ammonia tanker truck at a fertilizer plant in a certain county in Shandong Province suddenly rupt the flexible hose connecting the tanker truck and the liquid ammonia storage tank during unloading, causing a large amount of liquid ammonia to leak. The accident resulted in 4 deaths, more than 30 people being poisoned, and more than 3,000 people being urgently evacuated and relocated. It is a typical accident caused by problems with the flexible hoses used in liquefied gas loading and unloading. According to the investigation, during the regular inspection ...

  • Selection, installation, maintenance, and safety considerations of steam pipes

    I. Selection of rubber hoses: . Confirm the selection of hoses suitable for conveying steam. The category of the rubber hose should not only be printed on the packaging, but also be printed on the body of the rubber hose in the form a trademark. Identify the fields where steam pipes are used. What is the actual pressure of the hose? What is the temperature of the hose? Whether it can reach the working pressure. Is saturated steam high humidity steam or dry high temperature steam. How often is it expected to be used? How are the external conditions for the use of rubber hoses. Check for any...

  • Pollution in the hydraulic system of injection molding machine

    The quality of the hydraulic system of injection molding machine depends not only on the rationality of system design and the performance of system components, but also on the protection and treatment of system pollution, it is directly related to the reliability of the hydraulic system of injection molding machine and the service life of components. 1.Contamination and wear of components Various contaminants in the oil lead to various forms of parts wear, solid particles into the clearance of the motion pair, resulting in parts of the surface cutting wear or fatigue wear. The impact of sol...

  • Industrial hose working pressure and burst pressure

    The working pressure and burst pressure of industrial hoses are the most important parameters in their design and application, which directly determine the safety and reliability of hoses under specific working conditions. Here is a more detailed explanation of the two parameters: Working pressure: Working pressure refers to the hose in normal working conditions, can continue to withstand the internal pressure, without leakage, deformation or damage. It mainly depends on the hose material, structure, wall thickness, diameter and the working environment of the temperature, media properties ...

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