Hebei Huayang Steel Pipe Co., Ltd is one of the leading manufacturers and suppliers of buttweld caps in China. Please feel free to buy cheap buttweld caps from our factory. All customized products are with high quality and low price.
Rigorous selection of special steel, building a solid foundation of quality
We select the alloy steel that has been specially refined for the welded pipe cap. When smelting, the use of advanced refining technology outside the furnace, the depth of the removal of sulfur, phosphorus and other impurities to ensure the purity of the steel. Carbon, manganese, chromium, molybdenum and other elements are accurately deployed to ensure the basic strength of carbon, manganese to enhance toughness and processability, chromium to enhance corrosion resistance, and molybdenum to improve the stability of high-temperature and high-pressure. Before each batch of steel enters the factory, it has to go through spectral analysis, metallurgical inspection and mechanical property tests such as tensile, impact, hardness, etc., so as to guarantee the quality from the source.
Innovative technology, carving high-quality pipe caps
The manufacturing adopts hot spinning and precision welding process. In hot spinning, the heated billet is fixed on the high-precision spinning equipment, and the billet is shaped into the prototype of pipe cap by rotating the mould and applying pressure accurately to optimize the internal grain arrangement of the steel, and improve the strength and fatigue resistance. Next, we enter the precision welding process, using automatic welding equipment and special welding materials, applying welds according to precise parameters, and ensuring that the welds are even and solid, and perfectly integrated with the base material with the help of real-time monitoring. After welding, non-destructive testing such as ultrasonic flaw detection and radiation flaw detection is carried out to detect defects in the weld seam and ensure the quality.
Excellent performance to cope with complex working conditions
Butt-welded pipe cap has excellent performance. After tempering heat treatment, yield strength and tensile strength increased significantly, can withstand tens to hundreds of megapascals of high pressure in the pipeline, to prevent deformation and rupture, to protect the pipeline safety. In terms of corrosion resistance, the alloying elements form a dense oxidative protective film, but also according to the environment of thermal spraying zinc-aluminium coating, coating corrosion-resistant paint and other anticorrosion treatments, to adapt to humidity, strong acids and alkalis and other harsh environments. Excellent sealing performance, well-designed sealing structure and high-precision sealing surface, with high-quality gaskets, close to the pipeline port, to prevent media leakage.
Multiple applications, help industry development
Butt-weld pipe caps are widely used in multi-industry pipeline systems. In the field of oil and gas, it is used to seal the end of pipeline, branch port and temporary blind break to prevent oil and gas leakage and ensure energy transmission. Chemical industry, with corrosion resistance, used for strong corrosive media transport pipeline. In the electric power industry, it is used to meet the demand for blocking steam pipelines of thermal power generation and cooling pipelines of nuclear power plants under different working conditions. In shipbuilding, it is used in fuel pipe, water pipe, exhaust pipe, etc., adapting to the marine environment and helping the construction and stable operation of pipelines in various industries.
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