Hardness refers to a material’s resistance to local deformation, especially plastic deformation, indentation, or scratching. Hardness testing is the most widely used mechanical performance test, categorized into indentation and scratch methods. Within indentation methods, there are static ...
The ability of a material to resist impact loads is known as its impact performance. Impact load refers to the load applied to a component at a high velocity. When a component is subjected to an impact load, the stress and deformation caused by the instantaneous impact are much greater than thos ...
The American Society for Testing and Materials (ASTM) sets standards for steel and iron material pipeline fittings. ASTM standards specify the manufacturing processes and precise chemical composition requirements for steel pipes, fittings, and flanges, including the percentages of carbon, mangan ...
Thermal performance testing is a method of inspecting product quality by using thermal instruments to determine the thermal properties of products. The thermal characteristics of products mainly include melting point, freezing point, boiling point, heat resistance, thermal conductivity, thermal ...
In recent years, shale gas development in China has progressed rapidly. In early April, China Petrochemical Corporation announced the successful completion of the trial gas production from the first set of conventional pressure shale gas wells in Daozhen County, Guizhou Province. The Zhenye 1 we ...
In the world of metal surface treatments, two popular methods stand out: cold galvanizing and hot-dip galvanizing. While both processes aim to protect metal from corrosion, they differ significantly in their application techniques, properties, and uses. Let’s delve into the distinctions be ...
Haihao Group has been committed to providing customers with high-quality pipeline system products and paying close attention to changes in the steel raw material market. The latest market conditions show that the domestic scrap steel market first strengthened and then weakened from March 23 to M ...
At Haihao Group, we pride ourselves on being the go-to destination for customized pipeline solutions. As experts in the field of pipeline systems, we specialize in manufacturing a wide range of products tailored to our customers’ unique requirements.
Recently, a valued client from Brazil a ...
Haihao Group, with certifications from ABS, DNV, RINA, BV, RS, and other major classification societies, has seen its pipeline system products increasingly utilized in the pipeline systems of large vessels. We are closely monitoring the latest developments in the world of FPSOs and are ready to ...
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 ...
