Hot-dip galvanizing is a widely used method to enhance the corrosion resistance of steel components, including flanges. This process involves coating steel with a layer of zinc, which acts as a protective barrier against environmental elements, thereby significantly extending the product’s ...

Haihao Group has been actively participating in offshore engineering projects in recent years. This article introduces the swivel flange, a common component used in marine pipeline systems. Swivel flanges consist of two primary components: a forged hub and a forged outer ring. The outer ring is ...

A Singaporean client recently placed an order for ASTM A694 GR. F65 compact flanges, specifying strict requirements for the chemical composition and heat treatment of the material to ensure the highest quality and reliability. Chemical Composition (%, max values): Carbon (C) Manganese (Mn) Ph ...

The new expansion techniques for connecting heat exchanger tubes to tube sheets include hydraulic expansion and rubber expansion methods. Below, we will provide a detailed introduction to these two techniques. tube sheet inspection Hydraulic Expansion Method: This technique involves applying hig ...

The traditional expansion joint techniques for connecting heat exchanger tubes to tube sheets include the roller expansion method and the explosive expansion method. Let’s take a closer look at these two methods. forged tube sheets Roller Expansion Method: This technique involves embedding ...

The connection between tubes and tube sheets is a crucial structural component in the design of shell and tube heat exchangers. This process not only involves significant machining work but also requires that every connection maintains a leak-proof seal and withstands the pressure of the working ...

Haihao Group proudly participated in Tube China 2024, where we successfully handled hundreds of clients from various industries. Our team’s professionalism, strict standards, and genuine approach earned the trust of many, making them choose Haihao Group as their preferred piping solutions ...

A tube sheet is a flat metal plate featuring multiple circular holes for connecting to pipelines. Typically, it appears as a relatively thick rectangular or circular plate, with hole arrangements and sizes designed to match the diameters of the connected pipes. The edges of the tube sheet often ...

Haihao Group is pleased to announce the delivery of the ASME B16.5 ASTM A350-LF2 C1.1 weld neck flanges for our valued client in Indonesia. This product underscores our commitment to quality and precision in manufacturing essential piping components. A weld neck (WN) flange features a long taper ...

In recent years, offshore wind power in China has seen rapid growth, despite its late start compared to Europe. By the end of 2023, the total installed capacity of offshore wind power in China reached 37.3 GW, making it the world’s largest market. Projections indicate that by 2025, this ca ...

The 2024 International Pipe Exhibition will be held at the Shanghai New International Expo Center from September 25 to 28, 2024.This premier event will showcase the latest advancements in tube and pipe manufacturing technologies, and we are thrilled to be part of it. Haihao Group invites you to ...

Orifice flanges are essential components in flow measurement systems, widely used across industries to measure the flow rate of liquids and gases. To ensure accurate flow readings, it is crucial to follow strict installation practices and pipeline design standards. Haihao Group will take you to ...