Page 9 of Steel Pipe News

1. The history of ductile iron pipes In 1947, H. Morrogh from the UK discovered that when cerium was added to hypereutectic gray cast iron, the graphite would be spherical with the content above...

4. The calculation of the water hammer protection 4.1 Check valves A check valve is a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself...

Abstract: In the long-distance pressure sewage pipeline project, the water hammer protection measures play a vital role in ensuring the safe and stable operation of the pipeline. A sewage pipeline...

Seamless steel pipes are widely used in automobile, national defense, aerospace, machinery, shipbuilding and other fields. In recent years, with the improvement of China's scientific and...

Abstract: After a high-pressure boiler has been in service for 6 years, its seamless steel pipe has cracked. The seamless steel pipe is tested and analyzed by chemical composition analyses,...

In the welding process of steel pipes, it's better to choose the carbon dioxide gas welding and the following steps should be paid attention to: ① Preheating before welding Before the welding, preheat...

Abstract: This article mainly focuses on the research on the installation and construction technology of large-diameter water supply steel pipes, combined with the current installation and construction...

Cracks of High Pressure Bends A high-pressure pipe joint is also known as the high-pressure fluid control part. It is widely used in well cementation, fracturing and acidification testing, and wellhead...

2.2 Designing drainage facilities In order to ensure the normal operation of the steam pipeline, it is required to establish drainage facilities in the system. For example, there is superheated steam...

Abstract: common design points in chemical process design are introduced, including the design of reducers, elbows, valves, and connections. The protective pipe of steam pipelines of...

A stainless steel flange is widely used in marine pipeline engineering because of its good corrosion resistance. As an important part of pipeline connection, it has the advantages of convenient...

 Inspection of Stainless Steel Reducers 1. Geometry analyses of stainless steel reducers The distribution trends of wall thickness of big and small concentric reducers are exactly the same....