At Haihao Group, we are proud to have successfully fulfilled a critical order for our Singapore-based client, consisting of ASTM A182 F51 S31803 JIS B2220 10K RF blind flanges. These flanges are engineered to meet the demanding requirements of industries such as oil and gas, chemical processing, ...

The red lead test is primarily conducted to assess the contact quality between octagonal gaskets and the sealing surfaces of high-pressure flanges. This straightforward yet effective test ensures optimal sealing performance by identifying irregularities in the contact area. Testing Procedure 1.P ...

Overlay welding, a welding process that applies a layer of specialized material to a base metal, plays a critical role in enhancing the performance and lifespan of components across various industries. By introducing wear-resistant, corrosion-resistant, or impact-resistant properties to the surf ...

Among the products that Haihao Group has recently delivered to Indonesian customers,In addition to the steel pipe end caps, Haihao Group also produced a batch of LDPE flange covers for our Indonesian client. The transportation method for these products was similarly divided into two parts: some ...

At Haihao Group, we prioritize the highest standards of quality control to ensure that our clients receive products that meet their exact specifications and requirements. Recently, we completed a rigorous quality inspection for a batch of flanges ordered by a valued client. The order included DI ...

At Haihao Group, we recently prepared a shipment of flange products for our esteemed client in Vietnam, which includes the DIN 2502 PN16 PL flange made from S235JR material. These plate flanges are an essential component in numerous piping systems, known for their reliable performance and durabi ...

When it comes to piping systems, the choice of flange type is crucial for ensuring the integrity and functionality of the system. Two common types of flanges are threaded flanges and weld neck flanges. Each has its unique characteristics and applications, making them suitable for different scena ...

In the piping system, flanges play a vital role in establishing a safe connection between pipes and other components. Among the various types of flanges, reducing diameter flanges and threaded flanges are two common flanges. This article will introduce to you what is a reducing diameter flange a ...

In the production of spiral wound gaskets, the choice of materials for the metal and non-metal strips is critical for ensuring optimal sealing performance. Here’s an overview of the specifications for basic type wound metal strips and non-metal strips. Basic Type Wound Metal Strip 1.Basic ...

Spiral wound gaskets are essential components in a variety of industrial applications, providing reliable sealing in extreme conditions. The performance of these gaskets depends largely on the materials used for the inner ring and the spiral wound metal strip. This article explores the hardness ...

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 Dhabi National Exhibition Centre (ADNEC), ...

In the realm of piping systems and flange connections, understanding the various sealing face types is crucial for ensuring leak-proof and efficient operations. Two common types of sealing faces are Raised Face (RF) and Ring Type Joint (RTJ). Each type has distinct characteristics and applicatio ...