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, ...

Three-layer polyethylene (3PE) coating is a commonly used external anti-corrosion system for buried steel pipelines. This coating system combines fusion bonded epoxy (FBE), adhesive (copolymer), and polyethylene layers, delivering excellent resistance to m ...

Haihao Group takes pride in contributing to large-scale, high-stakes marine projects. With extensive experience in providing piping solutions for shipbuilding and offshore engineering, Haihao Group holds certifications from multiple globally recognized cla ...

Haihao Group, a globally recognized leader in the pipe fittings industry, has successfully produced and delivered a batch of ASME B16.9 45° short-radius elbows for a valued client in Singapore. This order further highlights Haihao Group’s commitment ...

In mid-December, Haihao Group signed a supply contract with a valued client from Russia for the production and delivery of a variety of high-quality piping components. The ordered products include: Seamless Caps made from AISI 321 ASTM A240, Seamless Tees ...

Haihao Group, a leader in piping system solutions, recently conducted ferrite testing on a batch of elbows. This testing ensures product reliability by analyzing the ferrite content in austenitic stainless steel, a critical factor affecting material perfor ...

As an expert in the field of pipeline systems, Haihao Group has extensive experience in heat treatment of many pipe fittings we produce. This article will introduce what mixed grain structures are and why they occur during heat treatment. Heat treatment of ...

ASTM A182 GR. F316/F316L and ASTM A403 GR. WP316/WP316L both specify 316 stainless steel but cater to different applications, manufacturing processes, and performance requirements. B16.11 ASTM A182 F316 Socket Weld Coupling 1.Application ASTM A182 GR. F316 ...

Haihao Group recently completed a custom order for a client in Côte d’Ivoire, featuring hot-dip galvanized U-bolts with padded sleeves and PTFE-lined washers. This specialized product was designed and manufactured according to the client’s prov ...

Haihao Group recently received a custom order from a domestic client, demonstrating our ability to meet complex and precise requirements in the pipeline systems industry. The order includes a variety of products, such as couplings, tee joints, elbows, hydr ...

At Haihao Group, we continue to meet the diverse needs of our global clients with premium pipeline products. Recently, we successfully fulfilled an order for a Korean customer, delivering a batch of ASME B16.5 ASTM A105 weld neck flanges with meticulou ...