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 ...

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 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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 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 ...

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 ...

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 ...

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 ...

General valves encompass a wide range of types including gate valves, globe valves, throttle valves, check valves, ball valves, butterfly valves, diaphragm valves, plug valves, piston valves, solenoid valves (electromagnetic drive open/close structures), s ...

On August 15th, Qidong COSCO Marine Engineering (Qidong COSCO) celebrated the grand naming ceremony of the first NG20000 wind turbine installation vessel, custom-built for Denmark’s Cadeler company. The vessel, named “Wind Peak,” was offi ...

As an expert in the piping systems field, Haihao Group has actively participated in numerous FPSO (Floating Production Storage and Offloading) construction projects in recent years, supplying a wide range of piping system products certified by classificati ...

As August begins, the domestic market for cold and hot rolled coils continues to show no signs of recovery. Market transactions remain sluggish, and prices are on a steady decline. The overall sentiment among steel traders is pessimistic, with most adoptin ...

The hydrogen energy industry is composed of several key segments, including hydrogen production, storage, transportation, refueling, and utilization. Among these, the storage and transportation of hydrogen serve as critical links between production and end ...