Domestic market trends and plastic raw materials determine the quality of electrofusion fittings

Data show that in the country's new construction and reconstruction projects, 70 per cent of the building drainage pipeline using electrofusion pipe, building rainwater pipeline 50 per cent of the use of plastic pipes, Ningbo PE co-layered siphon fittings 10 per cent of the city drainage pipeline using plastic pipes, building water supply, hot water supply and heating 60 per cent of the use of plastic pipes. City water supply pipe (DN400mm below) 50% of the plastic pipe, 70% of the village and town water supply pipe plastic pipe, city gas pipe (medium and low pressure pipe) 20% of the plastic pipe, wire sheathing pipe 80% of the plastic pipe.

At present, the city project drainage pipe road and construction of plastic pipes with good prospects for development, the development company from the price of many pipe materials, ignoring the use of specific conditions of the pipe, ‘water-saving irrigation, environmental protection’ is the country's livelihood, and urban management departments related to the design and construction units in the application of the drainage pipe scientific analysis, combined with the pipe The cost and comprehensive price of the project, pay attention to long-term social benefits.

Developers in use at the same time, Taizhou PE cohesive siphon pipe fittings electrofusion fittings nearly 2 years, China's development has been unsuccessful, high value-added electrofusion pipe products are few, at present, the domestic plastic water pipes and pipe fittings are widely used in the general-purpose products, the use of high-demand, high value-added tubing, pipe fittings are relatively short, can only be used as a sanitary pipe, which greatly restricts the market application of the application of the advanced field of electrofusion fittings still In the preliminary stage.

Increase the price of pe conduit cylinder heating temperature, if not within certain limits, otherwise it will cause the decomposition of the material. Usually, the extruder's plasticising (melting) capacity is insufficient, the screw's length-to-diameter ratio is too small, or the compression ratio is too large, the compression section is too short, Cixi PE homogeneous siphon fittings basically belongs to the extruder's the problem, if the design problem is not serious, the extrusion rate can be lowered or appropriately increase the barrel's heating temperature to alleviate the price of pe conduit. Since the preheated powder material is more likely to coalesce and cross-link in the hopper, the hopper must be configured with a machine