Hydrostatic testing is a crucial method used to evaluate the integrity and pressure-holding capacity of pipes, vessels, or components. This process involves filling the test object with water and applying a specific pressure to assess its sealing performan ...

Pipeline prefabrication is a process in which the various parts of the pipeline system are pre-processed, assembled and welded into modules or sections in a factory environment. These prefabricated modules or sections are then transported to the installati ...

At Haihao Group, we understand the importance of staying updated with the latest trends and data in the steel raw materials market. By sharing relevant industry information, we aim to keep our clients informed and help them make well-informed decisions. He ...

Butterfly valves are widely used in various industries for their efficient flow control and compact design. A crucial aspect of their functionality is the sealing mechanism, which ensures the valve’s ability to prevent leakage. There are two primary ...

The API 5L GR.B ERW pipes are widely used material in the oil and gas industry. This pipe specification is designed to meet the stringent requirements for transporting natural gas, oil, and other fluids in both onshore and offshore applications. In this ar ...

In the field of material science and engineering, the integrity and durability of materials used in harsh environments are critical. Particularly in industries such as oil and gas, where equipment is constantly exposed to corrosive conditions, understandin ...

Hardness is a measure of a metal material’s resistance to localized deformation, particularly plastic deformation, indentation, and scratching. Higher hardness often implies better wear resistance. The hardness value depends not only on the material& ...

Effective maintenance of petrochemical equipment is crucial to ensure its longevity and efficiency. One of the key maintenance strategies employed in the industry is the “One Removal and Four Injections” technique, which plays a significant rol ...

Since entering June, the domestic cold and hot rolled coil market has not improved significantly. The market transaction is generally sluggish, and the prices of cold and hot rolled coils are fluctuating. Traders are generally cautious and optimistic about ...

At Haihao Group, we pride ourselves on our meticulous manufacturing processes and stringent quality control measures, particularly in the production of pressure pipeline components such as valves. Our commitment to excellence ensures that every valve we pr ...

As we enter June, the domestic market for hot and cold rolled coils remains stagnant, with trading activity showing little improvement. Currently, most traders are adopting a cautious outlook towards the future market trends. Recent Price Trends: In early ...

In the world of engineering and piping systems, threads play a crucial role in ensuring secure and reliable connections. Among the various types of threads, straight threads and tapered threads are two of the most commonly used. Understanding their differe ...

Haihao Group is proud to announce the successful delivery of a batch of premium pipe fittings to our valued customer in the United Kingdom. This shipment includes ASME B16.9 90° long radius elbows, ASME B16.9 45° long radius elbows, ASME B16.9 caps, and AS ...

Haihao Group is delighted to announce the successful production of a custom order for our esteemed Indonesian client. This order includes high-performance ball valves and associated components, crafted to meet stringent specifications and industry standard ...

At Haihao Group, we pride ourselves on delivering the highest quality industrial piping components to our esteemed clients worldwide. Today, we are thrilled to announce the successful production of a range of ASME B16.9 products specifically tailored for o ...

At Haihao Group, we prioritize keeping our clients informed about the latest trends and changes in the raw material market. Understanding these fluctuations helps our clients make informed decisions, optimize their procurement strategies, and manage costs ...

Haihao Group is proud to announce the successful shipment of a batch of high-quality pipeline products to our esteemed Russian customers. The products shipped this time include: ASME B16.9 45 ° And 90 ° Elbow LR ASTM A420 Grade WPL6 ASME B16.9 Tee ASTM A42 ...

Haihao Group is proud to announce the successful delivery of a bulk shipment to our valued client in Bangladesh. This shipment includes a variety of high-quality pipeline products tailored to meet the specific needs of our client’s projects. Among th ...

In the dynamic realm of pipeline systems, precision and reliability stand paramount. It is under this guiding spirit that Haihao Group proudly unveils our latest endeavor: fulfilling the order for our esteemed Romanian client concerning EN 10253-2 P275NL1 ...

The welding process for metal pressure piping typically follows the steps outlined below: Pre-Welding Preparation: Welding Procedure Qualification: If the construction unit lacks a qualified welding procedure for pressure piping, a welding procedure qualif ...