Pipeline

How entrained air, gas bubbles, cavitation, and changing flow patterns affect industrial flow measurement accuracy. In an industrial liquid pipeline, the pump operates at a constant speed, the control valve remains in the same position, and the process appears stable. However, the flowmeter reading suddenly increases, drops, or fluctuates continuously. The pressure transmitter may show […]

Negative pressure in pipelines refers to the condition where the pressure inside the pipeline is lower than atmospheric pressure. This is a common yet often underestimated issue in engineering. In real-world operations, negative pressure can lead to a range of serious consequences, including: Pipe collapse or deformation Equipment damage due to excessive suction Infiltration of

Understanding DN, D, De and Ø in Engineering Practice In many projects, pipes and flanges fail to fit during installation. This problem is often attributed to poor communication, purchasing mistakes, or site workmanship.However, from an engineering and inspection perspective, the root cause is usually much deeper — and far less intuitive. DN itself is not

Introduction In industrial piping systems, strainers are rarely the most expensive components, nor are they usually the focus during the design stage. However, in actual operation, many problems that appear to be incidental—such as abnormal pump wear, control valve sticking, or gradual deterioration of heat exchanger performance—can often be traced back to insufficient filtration or

In many engineering systems, gas and liquid do not flow independently, but coexist, interact, and flow together. This phenomenon is known in fluid dynamics as gas-liquid two-phase flow. Two-Phase Flow: Definition and Characteristics Two-phase flow refers to the simultaneous interaction of two different phases (gas and liquid) within a pipe or conduit, resulting in unique

Introduction Negative pressure in pipelines—defined as internal pressure falling below atmospheric pressure—is a common but often underestimated engineering issue.In practical operation, negative pressure can lead to serious consequences, including: Pipeline collapse or deformation Equipment damage caused by excessive suction forces Ingress of air or toxic gases into the system Increased leakage risk and accelerated fatigue

When working with piping systems, understanding the relationship between Nominal Diameter (DN) and Outside Diameter (De) is crucial for accurate pipe selection, installation, and compatibility with fittings. This guide provides detailed insights into the DN and De relationship across different types of materials, including steel pipes and plastic pipes (PVC/PE/PPR). What is Nominal Diameter (DN)?

1. Introduction Pipeline purging is a common industrial operation that plays a critical role in ensuring system reliability and safety. It removes impurities such as welding slag, rust, and other debris from pipelines, preventing potential damage to downstream equipment. In applications such as syngas production and compressor systems, effective purging is essential for stable and

Introduction High-temperature steam and dense chemical liquids are at the core of coatings, adhesives, high-performance lubricants, and specialty fluids. For chemical plants, processing these high-viscosity materials means mastering intense heat and shear forces to ensure stable quality and consistent production. This article explores cutting-edge process technologies to overcome common issues such as pipeline clogging and

1. Common Pitfalls in Piping Installation Piping installation is often perceived as a routine task in industrial projects. However, even minor mistakes can lead to catastrophic system failures. Based on years of field experience, here are six common issues encountered during piping installation: 1.1 Poor Interpretation of Drawings and Improper Fit-Up In many projects, construction