• Corporate vision to become the pipeline industry Toyota
  • Corporate mission to enhance the quality level of Chinese manufacturing
  • Business goals domestic industry first
Plastic-coated pipes and 3PE anti-corrosion steel pipes have unique performance characteristics to meet a wide range of industrial and infrastructure needs. Let’s take a closer look at their unique features and applications to understand their versatility and benefits. Plastic lined flange ...

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Ensuring the chemical composition of steel pipes is crucial for determining if a batch meets product standards. Here, we outline the methods used to test this composition and their significance. EN10225 pipe SAW 610×25.4×11.8m S355ML Direct Reading Spectrometer Utilizing the principles ...

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When it comes to verifying material quality and compliance, the EN10204 3.2 certificate is an affirmation of compliance with European standards. Typically issued by an EU-authorized third-party agency, this certificate plays a key role in confirming product integrity. At Haihao Group, we often p ...

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In the realm of industrial engineering, precision and reliability are paramount. When it comes to ensuring seamless connections and optimal performance, look no further than ASME B16.5 RF A350 LF2 CL1 weld neck flange. This exceptional product stands as a testament to innovation and excellence i ...

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Magnetic particle testing sensitivity is influenced by several factors, each playing a crucial role in the effectiveness of the inspection process. Here are some key factors to consider: External Magnetic Field Strength: The sensitivity of magnetic particle testing is closely related to the magn ...

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Last week witnessed various fluctuations in the raw materials market. Haihao Group closely monitored these changes to stay informed and adapt to market dynamics. Iron ore prices experienced slight fluctuations during the week. While prices in the overseas market were higher than those at ports, ...

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Haihao Group has been deeply involved in the field of pipeline systems for more than 40 years. Our pipeline system products have been increasingly used in pipeline system projects around the world. Therefore, we have also attracted more and more overseas customers to visit and negotiate business ...

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In a marine environment, frequent sea winds and waves create a challenging atmospheric environment. The sea breeze stirs the waves and mixes a large amount of seawater with the atmosphere, resulting in the presence of a large number of salt particles in the atmosphere, especially chloride ions, ...

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When it comes to pipelines, there are several commonly used connection methods based on their purpose and the type of pipe material. Let’s explore these methods and find the best fit for your requirements: ANSI ASME B16.11 ASTM A105 threaded 90 degree elbows Threaded Connections: These con ...

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Introducing duplex 2205, a nitrogen-enhanced duplex stainless steel designed to address common corrosion issues faced by the 300 series stainless steels. “Duplex” describes a range of stainless steels that are neither fully austenitic like 304 stainless steel nor purely ferritic like ...

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Last week witnessed a general downward trend in the raw material market across various categories. Prices of iron ore continued to plummet; the fourth round of coke price reduction was largely implemented; while the price of coking coal remained relatively stable with slight declines. Meanwhile, ...

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Galvanized steel pipes are vital construction materials widely used in building, manufacturing, and various other industries. They boast excellent corrosion resistance, durability, and cost-effectiveness. But do you know what the main materials of galvanized steel pipes are? Let’s delve in ...

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In the aftermath of the Spring Festival, the domestic scrap steel market is experiencing a sluggish trend, characterized by low trading activity and limited circulation resources. Processing enterprises are resuming work at a slower pace, resulting in steel mill arrivals generally falling below ...

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Eddy current testing, rooted in the principle of electromagnetic induction, plays a pivotal role in ensuring the integrity and reliability of pipeline systems. This non-destructive testing method relies on the generation of eddy currents within metallic materials when subjected to alternating ma ...

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Reducing tee fitting is a special type of tee joint. The branch pipe of the reducing tee has a different diameter than the other two. Due to their versatility, reducing tees are widely used in various industries and have become an important part of piping systems around the world. As an expert i ...

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Haihao Group has been engaged in the field of pipeline systems for more than 40 years. Our company pays close attention to the changes in the steel raw material market and shares it with customers. This article will introduce to you the changes in the raw material market last week. In the domest ...

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Haihao Group has been deeply involved in the field of pipeline systems for many years, and we fully understand the impact of high-quality raw materials on product performance. Stainless steel is prized for its corrosion resistance and is widely used in piping system products, but what exactly ma ...

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Stretching wind energy projects from land to sea is no easy task. The natural environment presents complex challenges with varying distances offshore and regional conditions. In the past thirty years of development practice, the offshore wind energy industry has gradually formed two different te ...

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Pipe elbows are crucial components in piping systems, enabling smooth directional changes and efficient flow of fluids. Let’s delve into the various types of elbows available: Reducer Elbow: This type of elbow features different diameters at each end, facilitating transitions between pipes ...

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As a strategic reserve supplier of CNOOC, Haihao Group plays a key role in the field of offshore pipeline engineering. In recent years, we have cooperated with CNOOC to complete a number of offshore pipeline projects, and we pay close attention to the latest developments in offshore engineering ...

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Upgrade your pipeline system with the reliability and durability of ASME B16.9 A234 GR WPB pipe cap. At Haihao Group, we prioritize the safety and efficiency of your operations, and our pipe caps are engineered to meet the highest standards, ensuring seamless performance and peace of mind for yo ...

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As experts in the field of pipeline systems, Haihao Group not only provides customers with a variety of high-quality pipeline system products but also possesses expertise in the professional knowledge of pipeline systems. Stainless steel threaded pipe fittings play a crucial role in various indu ...

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As experts in the field of pipeline systems, Haihao Group is committed to providing high-quality pipeline system products, including various steel pipes, flanges, elbows, tees, olets, and other fittings used in pipeline systems. We pay close attention to fluctuations in steel prices and promptly ...

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Haihao Group, which has been involved in the field of pipeline systems for more than 40 years, once again demonstrated its excellent solution capabilities. We are always committed to providing customers with high-quality products and excellent services. This time we successfully helped Indonesia ...

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