As an important economic hub in southern Europe, Italy plays a vital role in China-Europe trade, especially in the fields of industrial equipment, piping systems and pressure fittings. Over the past decade, Haihao Group has established solid partnerships a ...

Valve leakage is one of the most common problems in industrial piping systems. Whether used in oil and gas, chemical processing, water treatment, or power generation, faulty valves can lead to costly fluid loss, environmental contamination, equipment damag ...

Valve seats are critical components that ensure tight sealing in industrial systems. However, over time, valve seat damage can occur due to a variety of factors, from abrasive wear and chemical attack to improper installation or operational errors. Underst ...

At Haihao Group, delivering products that meet both international standards and customer expectations is our top priority. Recently, we conducted a full quality inspection for a domestic client’s order consisting of various stainless steel pipe fittings an ...

In the intricate architecture of industrial pipelines – spanning oil & gas, power generation, chemical processing, and water treatment – elbows are indispensable for directing fluid flow. Among the most critical of these pipe fittings is the long radiu ...

At Haihao Group, we recently completed a customized production order of 24-inch ASTM A860 WPHY 52 Long Radius Elbows for one of our long-term clients in Singapore. These elbows are specifically designed for use in demanding pipeline systems, such as those ...

In industrial piping systems, choosing the right fitting standard is critical to ensuring safety, reliability and system performance. Haihao Group recently produced orders for Singapore customers, including ASME B16.11 socket fittings and ASME B16.28 fitti ...

Industrial valves play a critical role in controlling the flow of fluids and gases in various industries, from petrochemical plants to water treatment facilities. Ensuring their reliability and safety is essential. One key aspect of this assurance process ...

In corrosive environments such as offshore platforms, chemical plants or oil and gas pipelines, stainless steel elbows are a common choice due to their excellent corrosion and high temperature resistance. However, they are not the only solution. For exampl ...

If you are purchasing steel pipes for mechanical or industrial purposes, especially in Russia, Eastern Europe or CIS countries, the GOST 8734-75 seamless steel pipes recently provided by Haihao Group to Russian customers are a good choice. Below I will int ...

During the construction of the pipeline system, we often encounter elbow fittings. They have various angles, such as 45°, 60°, 90°, 180,etc. These values ​​describe the bending radius of the elbow fittings, which directly affects the total length, pressure ...

Haihao Group, an integrated industrial-trading service provider specializing in end-to-end pipeline solutions, has successfully supplied MSS SP-97 A182 F316 45° socket weld latrolets to a Singaporean energy client. This precision-engineered component featu ...

Butterfly valves are widely used in various industries due to their compact structure, cost-effectiveness, and suitability for regulating or isolating flow. However, selecting the right butterfly valve for a specific application requires a systematic evalu ...

Pneumatic valves are widely used in automated control systems for various industrial applications. To enhance their performance, reliability, and efficiency, pneumatic valve accessories play a critical role. These accessories support the core functions of ...

As a leading enterprise in the global industrial piping system field, Haihao Group has recently successfully delivered a batch of high-quality concentric swage nipples to our strategic partner in Singapore. This batch of concentric swage nipples strictly f ...

1.Gas Porosity Gas porosity refers to small voids formed when gases fail to escape during the metal solidification process. These pores have smooth inner walls and contain gases, making them highly reflective to ultrasonic waves. However, due to their typi ...

When it comes to pipeline systems operating in sour service environments, selecting the right materials is not just a recommendation—it’s a necessity. ASTM A234 WPB seamless pipe fittings are widely recognized for their mechanical strength, reliabili ...

In March 2025, Haihao Group successfully delivered a custom order of 90 alloy steel pipe fittings to a Russian client. The order included a variety of high-quality seamless elbows and reducers made of 15X5M, a high-performance alloy steel with minimum chro ...

Haihao Group, a global leader in piping solutions, has completed delivery of ASME B16.9 ASTM A234 Gr.WPB pipe fittings to a Russian energy client. The order included 45° and 90° LR elbows, tees, concentric reducers, and eccentric reducers, all manufactured ...

At Haihao Group, we take pride in delivering high-quality products tailored to the specific needs of our global clients. Recently, we successfully completed the production of a batch of ASTM A387 Gr22 Cl2 material hemispherical pressure vessel heads for a ...