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 ...

In pressure piping systems, valves perform critical functions—controlling flow, ensuring safety, and maintaining system integrity. To guarantee their performance under various operating conditions, type testing of industrial valves is not optional; it’s a ...

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 ...

1.Definition of Pipe Schedule (Sch) The pipe schedule number, abbreviated as Sch, is a numerical designation that represents the wall thickness series of pipes. It is defined as the ratio of the design pressure to the allowable stress of the pipe material ...

The ASME B16.9 A234 WPB eccentric reducer plays a critical role in the petrochemical industry, facilitating the smooth transition between different pipe sizes and ensuring efficient fluid flow. This article delves into the specific applications of this com ...

Stainless steel grades 304, 304L, 316, and 316L are widely used across various industries for their excellent properties. Here’s a focused comparison highlighting their key differences: ANSI B36.19 SS304 SCH30 concentric reducer 304 vs. 304L Stainles ...

As a significant partner in the Belt and Road Initiative, Qatar has become an important market for Haihao Group. In recent years, we have expanded our business operations extensively in the region. Our piping system products are widely utilized in various ...

Thickness is one of the most critical structural parameters in the design of pressure vessels. It ensures structural strength, rigidity, and longevity under specified load conditions. Various thicknesses are strictly regulated by standards to ensure the re ...

Stainless steel welded elbows are integral components in various piping systems, renowned for their high performance and ease of installation. They are crucial for maintaining corrosion resistance and structural integrity in diverse industrial applications ...

For stainless steel pressure vessels, when designing according to ASME VIII – Ⅰ, the commonly used material standards for plates, pipes, forgings, bolts, and nuts can be found in ASME II Part A, mainly including the following: stainless steel pressur ...

Pressure vessels are critical components in various industries, designed to hold gases or liquids at high pressures. One of the most important aspects of their design is the selection and integration of heads and sealing devices. These elements ensure the ...

At Haihao Group, we understand the critical importance of staying updated with market trends, particularly in the raw materials sector, to better serve our clients and ensure optimal operational decisions. A recent iron ore market report from June 29 to Ju ...