Corrosion is one of the important elements that cause valve damage. Therefore, valve protection is an important issue to consider in valve protection. PetroChina and Sinopec talk about anti-corrosion: What is the corrosion of the valve? How to carry out valve anti-corrosion? What is the basis for the selection of corrosion-resistant valves? 1. Valve corrosion form The […]
Application of corrosion resistant steel and corrosion resistant alloy in oil and gas industry
Despite our efforts to promote renewable resources, oil and gas will continue to be the main force of energy in the coming decades. Since most of the traditional resources available have been exhausted, it has to be developed to make it more difficult to exploit oil and gas fields. In order to meet the rapid […]
Material selection for chemical pipelines
There are many factors affecting the choice of pipeline materials: process design conditions, material properties, economy, processability, contamination of the final product, process safety, corrosion resistance, etc. Cast iron pipe: Ordinary cast iron pipe: It is mainly used for water pipe, gas main pipe, sewage pipe, etc. buried in the ground, which has good corrosion resistance […]
The most practical 6 solutions for flange corrosion
The integrity of the flange connection is critical to the delivery of fluid piping systems. Whether it is a piping system that transports chemical media (such as hydrocarbons) or a water supply line, flange connection leakage can cause serious environmental and economic impacts, and may even pose a huge safety hazard. If the flange is not protected, […]
The overall market trend of stainless steel seamless pipes
First. China’s stainless steel seamless pipe production and consumption trends With the development of China’s economy and the acceleration of industrialization, oil, petrochemical, boiler, nuclear power, military, shipbuilding, fertilizer and other enterprises that have long relied on imported stainless steel pipes have turned their attention to stainless steel pipe products produced by Chinese enterprises. Development and construction […]
Research and future development of duplex stainless steel
1. Introduction to duplex stainless steel Duplex stainless steel refers to a stainless steel in which the solid solution structure is composed of a ferrite and austenite duplex, and one of the comparative examples is about 45% to 55%. Due to the characteristics of the two-phase structure, the duplex stainless steel has the advantages of both […]
Development and application of duplex stainless steel
Duplex stainless steel has two kinds of metal phase structure, so the duplex stainless steel can combine the properties of ferritic stainless steel and austenitic stainless steel by properly controlling the chemical composition and heat treatment process, that is, the good toughness and welding of austenitic stainless steel. Performance combined with higher strength and chloride stress […]
Technical research on intergranular corrosion performance of TP321 stainless steel seamless pipe
Intergranular corrosion of stainless steel is a phenomenon of corrosion damage, which is manifested by the loss of bonding force between grains, so that the strength of the material deteriorates. There are many different theories for the cause of intergranular corrosion, such as chromium-depleted theory, grain boundary adsorption theory, precipitation phase metastable theory, metastable phase […]
Matters needing attention in welding of stainless steel water pipes for water supply
When welding the stainless steel pipe, the grinding wheel used only for grinding stainless steel pipes; the steel wire brushes used and the tools to remove the slag are made of stainless steel; the stainless steel pipe surface is not allowed to be exposed to the flame processing place, otherwise the corrosion resistance of the stainless […]
Common rust conditions and treatment methods for stainless steel water pipes
The stainless steel water pipe does not mean that it will not rust, but it is not easy to rust with respect to iron and copper pipes. A good quality stainless steel water pipe for a dozen years is still not a big problem, but it should be used well. The stainless steel water pipe is not […]
Recent Comments