A694 Gr. 60 is a high-strength carbon steel material widely used in the oil and gas industry, particularly for manufacturing flanges, fittings, and other pipeline components. It is specifically designed to withstand high-pressure and high-temperature condi ...

The DIN 912 A4-80 hex socket head bolt is a premium-grade fastening component, widely recognized for its exceptional strength, durability, and resistance to harsh environments. Designed to meet the stringent standards of DIN 912, this bolt is a reliable ch ...

Haihao Group has successfully completed the production and delivery of a batch of ASME B16.9 A403 WP304L eccentric reducers for a domestic customer. These high-quality reducers are designed to meet rigorous industrial requirements, providing reliable perfo ...

Haihao Group recently fulfilled an order from a valued client in the UAE for a batch of ASME B16.9 A234 GR.WPB pipe caps. The ordered pipe caps were specified at a size of 24 inches with a black-painted surface finish. The client set stringent requirements ...

Haihao Group recently completed an order for a UK client, delivering a batch of ASME B16.9  A234 WPB concentric reducers. This order included sizes ranging from 3/4″ x 1/2″ to 16″ x 14″, all with a durable black-painted surface for ...

At Haihao Group, we take pride in delivering premium piping components that meet stringent industry requirements. Recently, we successfully completed an order of ASTM A234 GR. WPB 90-degree short radius (SR) elbows for our valued customer in Singapore. The ...

We are pleased to announce the successful fulfillment of an order for hex bolts with nuts for our valued Russian customer. These components are made from high-quality carbon steel, ensuring durability and reliability in various applications. Carbon steel h ...

MSS-SP-97 A182 F11 CL.1 weldolet is a high-quality branch connection fitting designed to provide a seamless and reinforced solution for pipe branching. Known for its robust mechanical properties and exceptional corrosion resistance, this product is widely ...

At Haihao Group, we are dedicated to delivering high-quality pipeline products that meet the diverse requirements of our customers. Recently, we successfully completed an order for our Malaysian customer, providing ASME B16.9 A234 WPB pipe caps with the fo ...

Recently, a domestic client ordered DN80 (3-inch) threaded caps for use in their high-pressure system, reflecting the practical value of this product in various industrial applications. What is a threaded cap? A threaded pipe cap is a pipe fitting used to ...

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 ...