The hot-dip galvanization process is widely used to enhance the corrosion resistance of pipe fittings by applying a protective zinc layer. One of the key quality control aspects of this process is achieving the desired thickness of the zinc coating. Proper ...

Hot-dip galvanization is a widely used method of protecting metal surfaces from corrosion and extending the life of steel products, such as pipe fittings. This process involves immersing the steel in molten zinc, which forms a protective layer that adheres ...

Recently, Haihao Group successfully completed the production of over 2000 pieces of pipe system components for a domestic client. This order included a variety of essential fittings, such as pipes, elbows, and tees. One of the product in this shipment was ...

A420-WPL6 is a low-temperature carbon steel material commonly used in piping systems that require excellent toughness and strength at sub-zero temperatures. Its unique combination of chemical and mechanical properties makes it suitable for applications in ...

Recently, Haihao Group was approached by an Indonesian client in need of a large order of LDPE pipe end caps. The client required caps in a range of sizes from 1 inch to 30 inches, all in blue color, totaling over 300 pieces. Understanding the urgency and ...

Hydrogen induced cracking (HIC) testing is a crucial evaluation method used to ensure that metal components, such as weldolets, are resistant to hydrogen-induced cracking. This form of cracking often occurs when materials are exposed to corrosive environme ...

Haihao Group is proud to announce the production and delivery of MSS SP-97 weldolet BW (Butt Weld) fittings forged from ASTM A105 normalized steel for our valued client in Iran. These specialty fittings are engineered to meet stringent industry standards a ...

In the realm of pipeline systems, reducing tees are essential components that facilitate the connection between pipes of different diameters, allowing for changes in the flow path. For our Iranian customer’s recent order, Haihao Group supplied ASME B ...

In piping systems, tees play an essential role in creating branch connections. Among the types of tees, reducing tees and straight tees are the most common, each serving specific functions based on system design needs. Understanding the difference between ...

Reducing tees are key components in many piping systems, especially where there’s a need to connect pipes of different diameters within one fitting. Haihao Group recently supplied seamless reducing tees to a Korean client, reflecting the demand for h ...

Recently, Haihao Group applied sandblasting treatment to a batch of elbows, aiming to enhance the durability and quality of these essential pipe fittings. Sandblasting is a surface preparation technique that involves propelling abrasive particles, typicall ...

When it comes to piping systems,the choice of flange is critical to ensure stability and performance. In this article, we will mainly introduce the differences between anchor flanges and weld neck flanges. Anchor Flanges Anchor flanges are specifically des ...

Haihao Group is committed to providing the highest quality products to our clients. Recently, we received an order for half couplings from our Iranian customer, who has specified rigorous quality inspection requirements before shipment. This commitment to ...

Haihao Group is pleased to announce the recent order from our Iranian client for a batch of half couplings made from high-quality alloy steel. These half couplings are designed to meet stringent industry standards, ensuring their reliability and performanc ...

Recently, Haihao Group has completed a comprehensive quality inspection of a batch of steel pipe coatings. This rigorous process ensures that our products meet the highest industry standards and provide reliable protection against corrosion and environment ...

Haihao Group is excited to announce our participation in the upcoming Abu Dhabi International Petroleum Exhibition & Conference (ADIPEC) 2024, which will take place from November 4th to November 7th. This prestigious event is held annually at the Abu D ...

Haihao Group received a request from a client in the UK, seeking to order a batch of U channel earth beam uprights. This specific product is designed according to Drawing provided by customers, showcasing our commitment to providing tailored solutions for ...

In piping systems, selecting the right component for sealing the ends of pipelines is essential for ensuring safety, reliability, and functionality. Two common solutions for closing off pipelines are pipe caps and blind flanges. Though they may seem simila ...

Haihao Group recently delivered an order of EN 10253-3 316L equal tee fittings to our valued Russian customer. This fitting plays a crucial role in piping systems across various industries, such as chemical processing, oil and gas, and water treatment faci ...

Recently, a German client ordered a batch of ASME B16.9 A106 Gr. B 180° SR elbows from Haihao Group. This product is a critical component in pipeline systems, especially where a 180-degree turn is required in compact spaces. The ASME B16.9 A106 Gr. B 180° ...