In fastening systems, the hardness relationship between bolts and nuts is a critical factor in achieving reliable and effective fastening. Generally, nuts are manufactured to have a slightly lower hardness than bolts, and this difference is intentional to ...

Haihao Group is excited to announce our participation in the upcoming Abu Dhabi International Petroleum Exhibition & Conference (ADIPEC) 2024, which will take place from November 4th to November 7th. This prestigious event is held annually at the Abu D ...

Pressure vessels are essential components in various industries, designed to hold gases or liquids at high pressures. The shape of the pressure vessel significantly influences its design, application, and maintenance. Circular and square pressure vessels a ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...