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2024-12-09Product News
What is concrete weight coating?
Concrete Weight Coating (CWC) is a type of protective coating applied to steel pipes, primarily used in pipeline construction to provide ballast and prevent buoyancy, ensuring the pipes stay in place during installation and transportation, particularly in underwater or marine environments. The concrete layer also provides protection against mechanical damage and corrosion, making it an essential part of pipeline systems that operate in challenging conditions such as offshore oil and gas pipelines or subsea water transport.
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2024-12-09Product News
What is EFW pipe?
EFW pipe, or Electric Fusion Welded Pipe, is a type of welded steel pipe that is produced by using an electric fusion welding process. The manufacturing process involves the use of high-frequency electrical current to heat the edges of the steel plate or coil, which are then fused together to form a strong and seamless bond. This welding method is commonly used to produce pipes for various applications in industries such as construction, oil and gas, water distribution, and infrastructure projects.
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2024-12-06Product News
Boiler tube standard specifications
Boiler tubes are critical components in pressure vessels and boilers, requiring adherence to stringent standards to ensure safety, reliability, and durability. Various countries and organizations have established their own specifications for boiler tubes to meet diverse industrial requirements. Below is an overview of these specifications categorized by regional and organizational standards.
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2024-12-06Product News
Nondestructive testing of boiler steel pipes
The interior of boiler steel pipes often contains hard-to-detect defects, such as lack of fusion, incomplete penetration, slag inclusions, pores, and cracks in the welds. Since destructive testing of every boiler or pressure vessel is impractical, nondestructive testing (NDT) methods are essential. These methods assess internal structures and defects by examining changes in physical properties without damaging the workpiece.
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2024-12-04Product News
Applications of carbon steel pipes in pipeline engineering
With the rapid advancement of industrialization, pipeline engineering has become a vital component across various industries. As a key material for pipeline construction, carbon steel pipes are highly regarded for their exceptional properties and versatility. This article highlights the characteristics of carbon steel pipes, their extensive applications in pipeline engineering, and the challenges associated with their use.
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2024-12-04Product News
Application of carbon steel pipes in the automotive field
Carbon steel pipes are essential components in the automobile manufacturing process, valued for their high strength, excellent wear resistance, and cost-effectiveness. Their versatility makes them widely used across various automotive systems. Below is an in-depth look at the types of carbon steel pipes used in automobiles and their applications.
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2024-12-03Product News
Specifications and models of pipe piles
Pipe piles are a versatile and widely used construction material in various fields. They are primarily composed of steel or concrete pipes, with additional equipment such as swing arms and hooks added based on specific project requirements. Below are the common specifications and models for pipe piles.
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2024-12-03Product News
In what projects are pipe piles used?
Pipe piles are long, narrow cylindrical structural elements typically made from steel pipes or reinforced concrete pipes. They are widely used in foundation reinforcement and support for various engineering structures, including buildings, bridges, and other infrastructure projects.
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2024-12-02Product News
Spiral steel pipe connection skills
Spiral steel pipes, or SSAW steel pipes, are welded pipes made from strip steel coils as raw materials, which are extruded at a regular temperature and welded using an automatic double-wire, double-sided submerged arc welding process. The quality of the joint in SSAW pipes directly affects the strength and sealing performance of the connection. Here are some essential operational tips and key considerations for ensuring seamless, misalignment-free joints.
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2024-12-02Product News
Details of SSAW steel pipe for drainage application
The drainpipe typically uses SSAW (Spiral Submerged Arc Welded) steel pipe, which is manufactured using the submerged arc welding method. The spiral weld creates a continuous seam, which helps distribute the pressure from the liquid inside the pipe evenly across the pipe's surface, enhancing the strength of the SSAW steel pipe. In contrast, if straight seam steel pipes (such as ERW pipes) were used, larger steel plates would be required to form the pipe, complicating the manufacturing process and increasing costs.
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2024-11-26Product News
Advantages of LSAW steel pipe JCOE forming
The JCOE process is one of the key forming techniques used in the production of straight seam steel pipes. It involves several steps such as bending, jointing, internal welding, external welding, straightening, and flattening. These processes ensure that the final product meets the relevant industry standards. The steel pipe's inner and outer surfaces must be smooth, free from defects such as folding, cracks, delamination, lap welding, arc breakage, or burn-through. Any local defects with a depth exceeding the lower wall thickness deviation are not allowed, though minor defects within acceptable limits are permissible.
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2024-11-26Product News
Pre-welding technology of LSAW steel pipe
LSAW (Longitudinal Submerged Arc Welded) steel pipes are produced by rolling a single medium or thick steel plate into a cylindrical shape using a mold or forming machine, followed by double-sided submerged arc welding. This process not only joins the edges of the plate but also expands the pipe diameter. One critical aspect of the LSAW steel pipe production process is the pre-welding stage, where the forming seam is subjected to "shallow welding" along the entire length of the pipe. This specialized technique is essential to ensure the integrity of the final welded pipe.
