Weld porosity is a common defect that occurs during the welding process, resulting from gas entrapment in the weld metal. Understanding the different types of weld porosity and their causes is crucial for preventing this issue and ensuring the integrity of ...

Haihao Group recently completed an order for a domestic client who required specialized A234 WP22 Class 1 180° elbows. These elbows are specifically engineered for high-pressure and high-temperature applications, showcasing our capability to deliver custom ...

At Haihao Group, we are committed to providing our clients with the highest quality pipeline products, engineered to meet the demands of industries worldwide. Recently, we completed the successful shipment of a range of ASME B36.10 ASTM A106 Grade B pipes ...

In piping systems, both seamless and welded pipe fittings play essential roles. However, their manufacturing processes differ, and as a result, their quality control requirements also vary. This article will highlight the key differences in the inspection ...

ASTM A860 is a standard that covers the specifications for forged low alloy high strength butt-weld fittings used in high-pressure oil and gas transmission and distribution systems. These fittings, made from seamless or electric fusion welded pipe material ...

When it comes to piping systems, flanges play a crucial role in ensuring the integrity and performance of connections. Two widely recognized standards for flanges are ASME B16.5 and ASME B16.47. While both standards serve important functions in the industr ...

ASTM A182 F9 is a specification that covers forged or rolled alloy steel flanges, fittings, valves, and parts for high-temperature service. This material, known for its exceptional strength and resistance to high temperatures, is particularly suited for de ...

In fastening systems, the hardness relationship between bolts and nuts is a critical factor in achieving reliable and effective fastening. Generally, nuts are manufactured to have a slightly lower hardness than bolts, and this difference is intentional to ...

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 ...

Pressure vessels are essential components in various industries, designed to hold gases or liquids at high pressures. The shape of the pressure vessel significantly influences its design, application, and maintenance. Circular and square pressure vessels a ...

To effectively prevent and control corrosion in open-loop Exhaust Gas Cleaning Systems (EGCS) piping, the following measures can be implemented: 1.Increase Inspection Frequency For vessels equipped with open-loop EGCS, it is essential to increase the inspe ...

Open-Loop Exhaust Gas Cleaning Systems (EGCS) are widely used on ships to reduce sulfur emissions. However, these systems can cause significant corrosion in piping systems due to various factors. Below are the main causes of corrosion in open-loop EGCS pip ...

Open-loop EGCS (Exhaust Gas Cleaning System) is a type of exhaust gas treatment system used on ships, commonly known as an open-loop scrubber. According to data from DNV·GL, around 80% of the currently installed scrubbers are open-loop types, followed by h ...

A 180-degree short radius elbow is a fitting used to change the flow direction of fluids or gases in a piping system by 180 degrees. Its main feature is its short bend radius, typically equal to the diameter of the pipe (R = 1D). This design allows the 180 ...

In the realm of metal processing and surface treatment, sandblasting and shot peening are two prevalent and essential techniques. Each has its unique characteristics and applications, playing a critical role in various scenarios. In this article, we will d ...

In welding, the type of joint varies depending on the thickness, structure, and usage conditions of the workpieces. The most common types of welding joints include butt joints, tee joints, corner joints, and lap joints. Below, we provide a detailed introdu ...

At Haihao Group, we are pleased to announce our latest order fulfillment for a valued client in Qatar. This order includes a comprehensive batch of ASME B16.9 pipe fittings, specifically designed to meet the rigorous demands of various industrial appli ...

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 Gr ...

Beveling and edge thermal cutting are crucial processes in metal fabrication, especially for preparing metal components for welding. These methods are essential for creating the correct edge geometry to ensure proper weld penetration, minimize defects, and ...

Hydrostatic testing is a critical procedure in the pipeline and piping industry, ensuring the integrity and safety of pipe fittings before they are put into service. This testing method involves the use of water or another liquid to assess the strength and ...