Recently, Haihao Group successfully supplied a batch of ASTM A36 steel products to a long-term client in Côte d’Ivoire. The order included: 75×40×9mm steel channels (6m length) 40×40×4mm steel angles (6m length) 50×50×6mm steel angles (6m length) 2m× ...

Large-diameter flanges, such as ASME B16.47 welding neck (WN) and blind flanges, play a critical role in high-pressure and high-temperature pipeline systems. To ensure their reliability, strict quality inspection and testing are essential before shipment. ...

What is duplex stainless steel S31803? Duplex stainless steel ASTM A240 UNS S31803 is a widely used duplex alloy that combines the best properties of austenitic and ferritic stainless steels. It has a two-phase microstructure consisting of approximately eq ...

In industries dealing with low-temperature applications, material toughness is a crucial factor in ensuring safety and reliability. ASTM A420 WPL6 pipe fittings, commonly used in LNG plants, cryogenic systems, and pipelines operating in freezing environmen ...

When selecting valves for industrial piping systems, understanding the differences between gate valves and butterfly valves is essential. Both are widely used, yet their distinct designs, operating mechanisms, and applications mean that each is suited to d ...

Gate valve seat and gate leakage is one of the most common issues encountered during installation and maintenance. This type of leakage generally falls into two categories: Sealing surface leakage Seal ring root leakage Proper preventive measures can signi ...

When it comes to industrial piping systems, selecting the right pipe fittings is essential for ensuring efficiency, durability, and corrosion resistance. One of the most widely used materials in high-performance piping systems is ASTM A403 WP316/316L stain ...

Heat treatment is essential for enhancing the mechanical properties, stability, and machinability of valve body castings. Different materials require specific heat treatment processes to achieve optimal performance. Below are the heat treatment processes b ...

Valve bodies are made from various materials depending on their temperature range, pressure rating, and application environment. Below are nine commonly used materials: 1.Gray Cast Iron Suitable for operating temperatures between -15°C to +200°C. Used in l ...

Control valves play a crucial role in regulating fluid flow in industrial systems. Any malfunction can significantly impact system stability and performance. Proper maintenance is essential to reduce failure rates and ensure long-term reliability. Control ...

Control valves are critical components in industrial processes, ensuring precise control of fluid flow and pressure. Their reliability and longevity directly impact production efficiency and quality. To maximize their service life, it’s essential to ...

Haihao Group is proud to introduce our high-quality ASME B16.11 ASTM A105 3000# couplings, designed to meet the rigorous demands of industrial piping systems. These couplings are manufactured with precision and are ideal for applications requiring a secure ...

Haihao Group has solidified its reputation as a leading provider of comprehensive pipe fitting solutions by successfully fulfilling a diverse order for a client in Singapore. This contract highlights our ability to supply a wide range of high-quality produ ...

Haihao Group is thrilled to unveil the successful manufacture of premium ASME B16.9 ASTM A815 UNS S32750 concentric reducers tailored for a highly esteemed client based in Singapore. Crafted from seamless super duplex stainless steel ASTM A815 UNS S32750, ...

Check valves are essential components in fluid systems, preventing backflow and ensuring unidirectional flow. Among them, lift check valves, swing check valves, and butterfly check valves serve similar functions but differ in structure, operation, and appl ...

Air release valves play a crucial role in various heating and water circulation systems, including independent heating systems, central heating, boilers, central air conditioning, underfloor heating, and solar heating systems. As water circulates, dissolve ...

In a recent order from our Singaporean client, Haihao Group received a request for pipe fittings made from ASTM A860 WPHY65 and ASTM A694 F65 materials, with the requirement to perform impact testing at -46°C. This article provides an in-depth look at the ...

uPVC (unplasticized polyvinyl chloride) and PVC (polyvinyl chloride) are both widely used materials in piping systems, but they have key differences that make them suitable for different applications. uPVC pipe fittings 1.Material Composition and Flexibili ...

Safety valves and pressure reducing valves (PRVs) are both crucial for pressure control in industrial systems, but they serve different functions. Safety Valves Safety Valve: Function and Operation A safety valve is designed to protect equipment from overp ...

Low-temperature pressure vessels primarily face brittle fracture as a failure mode. Steel materials tend to become more brittle and lose toughness at low temperatures, which necessitates stricter requirements compared to materials used in non-cryogenic ves ...