Haihao Group, a leading manufacturer and supplier of pipe fittings renowned for its commitment to excellence and customer satisfaction, is pleased to announce the successful securing of a significant order from a esteemed client in Iran. This latest collab ...

Haihao Group, a global leader in precision-engineered pipe fittings, is thrilled to announce the successful delivery of a specialized weldolet order to clients in Singapore. Manufactured to MSS SP-97 standards and crafted from ASTM A182 GR. F51 duplex stai ...

High carbon steel presents significant challenges in welding due to its high hardenability and susceptibility to cracking. To ensure strong and defect-free welds, the following precautions should be taken: 1.Welding Thin Plates (≤5mm Thickness) For workpie ...

Weldability of High Carbon Steel High carbon steel, with a carbon content greater than 0.6%, has high hardenability and tends to form brittle, hard martensite. This makes it highly prone to cracking in the weld and heat-affected zones, making welding diffi ...

As an expert in pipeline systems, Haihao Group frequently handles prefabrication orders, many of which involve welding. Medium carbon steel welding presents specific challenges due to its higher carbon content compared to low carbon steel. Weldability of M ...

In the competitive world of industrial supplies, finding a reliable partner who can deliver high-quality products while meeting stringent international standards is crucial. At Haihao Group, we pride ourselves on being that partner for our valued clients, ...

Temperature plays a crucial role in the accuracy of measurements, and its influence should never be underestimated. While factors like humidity, vibration, dust, and corrosive gases can also affect measurement precision, temperature variations have the mos ...

ASTM A234 is a standard specification that covers pipe fittings made from various materials, typically used in high-temperature and high-pressure applications. Within this standard, ASTM A234 GR WP5 and ASTM A234 GR WP9 are both widely used for carbon stee ...

Stainless steel is one of the most commonly used materials in industrial applications due to its excellent corrosion resistance, strength, and versatility. However, not all stainless steel materials are created equal. Two common standards you may encounter ...

Haihao Group recently supplied Belarusian clients with a range of high-quality piping components, including elbows and tees, manufactured from two distinct materials: ASTM A182 GR F347 and ASTM A182 GR F5. While both are premium-grade materials used in ind ...

At Haihao Group, we are dedicated to providing premium piping solutions tailored to meet the diverse needs of our customers. Recently, we successfully fulfilled an order from a valued client for over 500 meters of ASME B36.19M seamless pipes (SMLS) made fr ...

As a trusted expert in the field of pipeline systems, Haihao Group specializes in providing high-quality, customized pipe fittings tailored to meet the unique needs of our clients. Recently, we signed a contract with a Latvian client to manufacture a batch ...

In piping systems, tees are essential fittings used to combine or split fluid flow. Two common types of tees are the reducing tee and the straight tee. While they serve similar purposes, their structural differences influence their specific applications an ...

Reducers are essential components in pipeline systems, enabling the connection of pipes with different diameters. Two common types of reducers are concentric reducers and eccentric reducers. Though they serve a similar purpose, their structural differences ...

Pipe elbows are essential components in pipeline systems, providing a smooth directional change to ensure fluid flow efficiency. Among the various types, SMLS (Seamless) elbows and ERW (Electric Resistance Welded) elbows are the most common. While both typ ...

Haihao Group is proud to supply a comprehensive range of pipeline system components tailored to meet the specific requirements of our global clients. Among the products in our recent order for a Singaporean client are EN 10253-2 Seamless 45° and 90° long r ...

When it comes to pipeline systems, every component matters—whether it’s a large piece of equipment or a small yet crucial fitting. At Haihao Group, we pride ourselves on being a one-stop solution provider for all pipeline system requirements. Recentl ...

In the fast-paced world of industrial manufacturing, meeting tight deadlines without compromising on quality is a challenge that requires precision, planning, and execution. At Haihao Group, we have honed our systems to deliver on ambitious promises, such ...

Oxygen valves play a critical role in industrial processes, and their cleanliness is paramount for safety and efficiency. During manufacturing, transportation, storage, and installation, oxygen valves can accumulate contaminants such as welding slag, rust, ...

3-Layer Polyethylene (3PE) coated pipelines are widely used in the transportation of oil, gas, and water due to their superior corrosion resistance, durability, and mechanical strength. This article explores the construction process, key features, and qual ...