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 ...

Manufacturing Process: The manufacturing of mitre elbows involves modern techniques such as computer-aided design (CAD) drafting to ensure precise results. The CAD system calculates the lengths of the straight segments, which form the mitre elbow, ensuring ...

In the daily operation of valves, one of the most common issues encountered is leakage. Valve leakage generally manifests in two forms: internal leakage and external leakage. Understanding the difference between the two is essential for effective troublesh ...

As a leading expert in the pipeline system field, Haihao Group is committed to offering comprehensive solutions to our clients’ pipeline challenges. Recently, we received an order from a customer in Russia who provided us with detailed drawings for a ...

Steam traps are crucial components in steam systems, designed to automatically discharge condensate, air, and non-condensable gases from the system while preventing the release of steam. These devices ensure the efficient and safe operation of steam equipm ...

Haihao Group, a leading manufacturer of high-quality pipe fittings and valves, is proud to announce a significant order from a valued Brazilian customer. The order comprises ASME B16.9 A420 GR WPL6 seamless 90-degree elbows and concentric reducers, further ...

Check valves play a crucial role in preventing backflow in pipeline systems. They are commonly installed at the outlets of pumps and compressors to ensure that the medium flows in the intended direction. In general, check valves are essential for protectin ...

In a piping system, fasteners and accessories play a crucial role in ensuring secure connections, stability, and durability. At Haihao Group, we provide a comprehensive range of fasteners and components to meet the diverse needs of our clients. Recently, w ...

Haihao Group, a leading global manufacturer of industrial pipe fittings, is proud to announce the successful delivery of a customized order to clients in Iran. The shipment includes 90-degree seamless elbows, seamless eccentric reducers, and seamless equal ...

Haihao Group, a trusted and leading manufacturer of high-quality piping components, is pleased to announce the successful completion and shipment of a significant MSS SP-97 weldolet order to a valued customer in Singapore. This latest achievement underscor ...

When it comes to reliable and efficient piping systems, the butt weld reducing tee plays a pivotal role in directing and controlling fluid flow across industries. At Haihao Group, we specialize in manufacturing premium butt weld reducing tees that meet glo ...

Tees are essential pipe fittings used to connect three sections of pipe, allowing fluid or gas to flow through the pipeline. Depending on their application and design, tees can be classified in various ways. In this article, we’ll explore the differe ...