S355JR, like S355J0 and S355J2, belongs to the European standard EN10025 for low-alloy high-strength structural steel. Each variant represents a different impact temperature, S355JR represents room temperature impact, S355J0 represents 0 degree impact, and S355J2 represents -20 degree impact.
Th ...
In the first half of March, the cold and hot rolled coil markets in the Shanghai region showed no signs of improvement. Taking specific varieties as examples, the price of 1.0mm cold rolled sheets produced by Angang Steel dropped from 4,810 yuan/ton on March 1st to 4,620 yuan/ton on March 20th, ...
In the realm of pipe fittings, two primary manufacturing processes stand out: seamless and welded. Understanding the differences between these methods is crucial for selecting the right components for various industrial applications. Let’s delve into the distinctive production techniques o ...
At Haihao Group, we remain vigilant about market dynamics, especially in terms of raw materials, to provide our customers with the best solutions. Recently, according to the China Steel Price Index (CSPI) weekly report from March 11 to March 15, domestic steel prices continue to fall sharply, an ...
At Haihao Group, our dedication to excellence extends beyond producing high-quality pipeline system components. We pride ourselves on our mastery of various welding and surface treatment techniques, allowing us to meet the diverse needs of our customers effectively.
Weld Cladding Piping Products ...
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 ...
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 ...
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 ...
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 ...
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 ...
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, ...
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 ...
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, ...
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 ...
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 ...
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, ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
