Hebei Haihao Group

  • Preventive measures for corrosion in open-loop EGCS piping systems

    Preventive measures for corrosion in open-loop EGCS piping systems

    To effectively prevent and control corrosion in open-loop Exhaust Gas Cleaning Systems (EGCS) piping, the following measures can be implemented: 1.Increase Inspection Frequency For vessels equipped with open-loop EGCS, it is essential to increase the inspe ...
  • Causes of corrosion in open-loop EGCS piping systems

    Causes of corrosion in open-loop EGCS piping systems

    Open-Loop Exhaust Gas Cleaning Systems (EGCS) are widely used on ships to reduce sulfur emissions. However, these systems can cause significant corrosion in piping systems due to various factors. Below are the main causes of corrosion in open-loop EGCS pip ...
  • Working principle and characteristics of open-loop EGCS

    Working principle and characteristics of open-loop EGCS

    Open-loop EGCS (Exhaust Gas Cleaning System) is a type of exhaust gas treatment system used on ships, commonly known as an open-loop scrubber. According to data from DNV·GL, around 80% of the currently installed scrubbers are open-loop types, followed by h ...
  • What is a 180° short radius elbow?

    What is a 180° short radius elbow?

    A 180-degree short radius elbow is a fitting used to change the flow direction of fluids or gases in a piping system by 180 degrees. Its main feature is its short bend radius, typically equal to the diameter of the pipe (R = 1D). This design allows the 180 ...
  • Sandblasting vs Shot Peening: A clash of giants in metal processing

    Sandblasting vs Shot Peening: A clash of giants in metal processing

    In the realm of metal processing and surface treatment, sandblasting and shot peening are two prevalent and essential techniques. Each has its unique characteristics and applications, playing a critical role in various scenarios. In this article, we will d ...
  • Types and forms of welding joints

    Types and forms of welding joints

    In welding, the type of joint varies depending on the thickness, structure, and usage conditions of the workpieces. The most common types of welding joints include butt joints, tee joints, corner joints, and lap joints. Below, we provide a detailed introdu ...
  • Reliable supply of ASME B16.9 pipe fittings to Qatar

    Reliable supply of ASME B16.9 pipe fittings to Qatar

    At Haihao Group, we are pleased to announce our latest order fulfillment for a valued client in Qatar. This order includes a comprehensive batch of ASME B16.9 pipe fittings, specifically designed to meet the rigorous demands of various industrial appli ...
  • Haihao Group's successful participation in Tube China 2024

    Haihao Group’s successful participation in Tube China 2024

    Haihao Group proudly participated in Tube China 2024, where we successfully handled hundreds of clients from various industries. Our team’s professionalism, strict standards, and genuine approach earned the trust of many, making them choose Haihao Gr ...
  • Methods of bevel and edge thermal cutting

    Methods of bevel and edge thermal cutting

    Beveling and edge thermal cutting are crucial processes in metal fabrication, especially for preparing metal components for welding. These methods are essential for creating the correct edge geometry to ensure proper weld penetration, minimize defects, and ...
  • Understanding hydrostatic testing of pipe fittings

    Understanding hydrostatic testing of pipe fittings

    Hydrostatic testing is a critical procedure in the pipeline and piping industry, ensuring the integrity and safety of pipe fittings before they are put into service. This testing method involves the use of water or another liquid to assess the strength and ...
  • Specification selection of pipes on pressure vessels (international and domestic parameters)

    Specification selection of pipes on pressure vessels (international and domestic parameters)

    When designing pressure vessels, the specifications and wall thickness of the steel pipes used for pipes can be selected according to the data in the table below. The minimum wall thickness of carbon steel and low alloy steel in the table includes a corros ...
  • Welding of low carbon steel and medium carbon steel

    Welding of low carbon steel and medium carbon steel

    As a professional supplier of pipeline system components, Haihao Group produces a wide range of fittings in various materials, often requiring extensive welding operations. With our rich welding experience, we understand the nuances of welding different ty ...
  • Haihao Group invites you to attend the 11th Tube China

    Haihao Group invites you to attend the 11th Tube China

    The 2024 International Pipe Exhibition will be held at the Shanghai New International Expo Center from September 25 to 28, 2024.This premier event will showcase the latest advancements in tube and pipe manufacturing technologies, and we are thrilled to be ...
  • Golar and CIMC raffles sign major EPC contract for MK II FLNG

    Golar and CIMC raffles sign major EPC contract for MK II FLNG

    In a significant development for the offshore energy industry, Golar LNG Limited, a global leader in floating liquefied natural gas (FLNG) solutions, has signed an EPC (Engineering, Procurement, and Construction) contract with CIMC Raffles for the construc ...
  • Market outlook: cold and hot rolled coil prices expected to stabilize and rise

    Market outlook: cold and hot rolled coil prices expected to stabilize and rise

    Haihao Group closely monitors the fluctuations in the raw materials market and provides timely analysis to customers. Looking ahead, scholars predict that the cold and hot rolled coil market is likely to stabilize and show an upward trend. In August, the d ...
  • Iron ore weekly report (August 24 - August 30)

    Iron ore weekly report (August 24 – August 30)

    In the final week of August, imported iron ore prices showed an upward trend compared to the previous week. From a supply perspective, the volume of iron ore arriving at ports increased slightly. Australia’s iron ore shipments rose marginally, while ...
  • All-position automatic welding: A revolutionary technique for long-distance heat transmission pipelines

    All-position automatic welding: A revolutionary technique for long-distance heat transmission pipelines

    All-position automatic welding is a highly efficient and quality-assured welding process that has gained considerable attention in the industry. This technique involves fixing and aligning the pipeline, after which a welding carriage moves the welding gun ...
  • What is low temperature corrosion of boilers? How is low temperature corrosion formed?

    What is low temperature corrosion of boilers? How is low temperature corrosion formed?

    Low-temperature corrosion in boilers refers to the sulfuric acid corrosion that occurs on the low-temperature heat exchange surfaces, such as economizers and air preheaters, located at the rear of the boiler. This type of corrosion is called low-temperatur ...
  • Principles for determining the minimum thickness of pressure vessels

    Principles for determining the minimum thickness of pressure vessels

    In the design of pressure vessels, the difference and connection of various thicknesses is a confusing problem that designers need to pay attention to, only a clear concept and a deep understanding of its internal meaning can be handy in determining the th ...
  • Causes and prevention of valve cavitation

    Causes and prevention of valve cavitation

    Over time, valves in piping systems can degrade, leading to cavitation—a phenomenon that causes significant damage to the system. Cavitation typically results from vibration and noise, accelerating the corrosion process. This issue occurs when high noise l ...