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  •  Heat expansion and cold contraction pipeline

    Heat expansion and cold contraction pipeline

    In the design and production process of petrochemical water supply and drainage steam heating pipeline, metal thermal expansion and cold contraction must be considered. The normal operation of pipeline transportation is analyzed and corresponding measures are taken. Usually, we will use the turning of the pipeline to make natural compensation for the pipeline, but this compensation is often not satisfied. When the pipeline is laid overhead, the thermal expansion and cold contraction of the pipeline are very harmful. If the corresponding scheme design and the positioning and installation of auxiliary devices are not carried out, serious problems such as pipeline leakage and fracture will occur. For many years, chhw has been researching and producing pipe fittings, rubber joints, expansion joints, compensators and other pressure piping components, and is good at solving the problems of thermal expansion and cold contraction of pipelines. Related products: high temperature rubber joint

  •  Vibration and noise reduction of pipeline

    Vibration and noise reduction of pipeline

    In the use and installation of water supply pump, air conditioning water pump, large fan, central air conditioning module unit, high lift water pump and other equipment, the vibration and noise of the equipment are often considered. For example, when the water pump and module machine are installed on the floor structural plate and roof panel, if the vibration and noise reduction measures are not considered, the floor vibration and noise will be caused. The relative vibration and noise will also harm the pump itself. If the vibration is too large, the bolts and other fasteners between different structures of the pump will be loosened, resulting in water leakage and pressure failure. Chhw specializes in the production of pipeline vibration reduction equipment. The following series and products are recommended for pipeline vibration reduction and noise reduction: rubber damping pad, rubber joint, flexible joint, rubber elbow, metal hose.

  •  Seismic displacement of pipeline

    Seismic displacement of pipeline

    Buried pipeline system is mainly used in water supply and drainage system, gas supply system, oil transportation system, heating system, etc. Historical experience shows that earthquake is a great threat to the safety of buried pipeline system. Once the buried pipeline is damaged in the earthquake, it will bring huge national economic losses and casualties, and the supply of energy and materials in the earthquake area is difficult, which will have a great impact on the earthquake emergency response and post earthquake recovery. Chhw has been continuously researching on the technology of pipeline anti vibration equipment. After many times of simulation and testing, chhw has designed a unique pipeline isolation device, which can improve the effect of seismic design for buried pipeline engineering. Pipeline anti vibration displacement related products: rubber joint, flanging rubber joint, expansion joint, compensator.

  •  Internal and external corrosion of pipeline

    Internal and external corrosion of pipeline

    Pipeline corrosion is one of the problems that are difficult to overcome in pipeline laying, especially when the pipeline is laid in embedded corrosion and adverse environment, such as internal corrosion, high temperature of steam fluid, impact and thinning of pipeline; poor quality of steam, many impurity ions, high conductivity, chemical corrosion and electrochemical corrosion occur in the pipe network, which causes serious pipeline corrosion, and causes serious corrosion to C in water The pH value of water quality changes, causing corrosion to pipelines and joints. External corrosion causes: when the insulation layer is damaged, the thermal pipeline is exposed to the air, causing atmospheric corrosion. The atmospheric corrosion belongs to electrochemical corrosion. The cathodic reaction is O2 + 2H2O + 4E - → 4OH -, and the anode reaction is m + xH2O → Mn + · xH2O + ne -. To avoid the harm of corrosive medium and external corrosion to pipeline, the following products should be used according to different requirements: high temperature resistant rubber joint, acid and alkali resistant rubber joint, oil resistant rubber joint, explosion-proof sun rubber joint.

  •  Food processing pipeline

    Food processing pipeline

    As we all know, food safety and people's life safety and health are closely linked, so the construction of food pipeline must strictly follow the food pipeline construction standards. Due to the particularity of the food industry, food grade pipes not only need good durability and anti-corrosion performance, but also strictly control the selection of materials. The silicone rubber joint produced by chhw is made of imported silica gel raw materials and scientific production technology. It is suitable for the laying of food processing pipeline. The following products are often used: PTFE lined joint, silicone rubber joint, silica gel negative pressure rubber joint (diversion cylinder), clamp type silicone rubber joint, stainless steel hose, stainless steel compensator.

  •  Maintenance of pipe network

    Maintenance of pipe network

    In the pipeline maintenance, the following products are often replaced: rubber joint, metal hose, metal expansion joint, expansion joint, corrugated compensator, etc. some of these pipe network accessories are damaged in normal operation, because the pipe network accessories themselves belong to consumable parts. Of course, some short-term failures are caused by product quality, improper installation and not using special accessories, especially If the raw materials and methods used in the production of rubber shock absorption products are not correct and there is no professional design, it is difficult to ensure the function and quality of each product. Chhw adheres to ISO9001 standard, strictly controls the production and inspection, so as to ensure the qualified delivery of each product. Chhw has announced in October 2019 that it will implement 5-year warranty service for non special customized products, and provide free on-site investigation service for high-end customers.