-
Classification of pipes
1. Classification by production method (1) Seamless pipe – hot rolled pipe, cold rolled pipe, cold drawn pipe, extruded pipe, pipe jacking (2) Welded pipe (3) According to the process – arc welded pipe, electric resistance welded pipe (high frequency, low frequency), gas welded pipe, ...Read more -
Steel prices or weak operation
This week, the mainstream price in the spot market is mainly down. Specifically, the market was disturbed by the epidemic and there were heavy rains in many parts of South China and Southwest China, and the market demand weakened. At the same time, the coke was raised in two rounds, the raw mater...Read more -
Steel prices should not be overly bearish
On May 12, the domestic steel market price fluctuated weakly, and the ex-factory price of Tangshan common billet rose 20 to 4,660 yuan/ton. Today, the black futures market fell across the board. Coupled with the impact of heavy rainfall in southern and eastern China, the market mentality deterior...Read more -
Design principle of seamless steel pipe plant
Design principle of seamless steel pipe plant: Seamless steel pipe plant 1. Using the three-dimensional space simulation module, the three-dimensional coordinate system of the curved surface is established according to the relationship between the curved surface and the building axis provi...Read more -
Causes of magnetic properties of seamless steel pipe
When constructing and repairing gas pipelines for welding, sometimes magnetic bias blowing will affect the welding process. Gb6479 seamless steel pipe is mainly used to produce products of pneumatic or hydraulic components, such as air cylinder or oil cylinder. The chemical composition of precisi...Read more -
Terminology of seamless steel pipe
Nowadays, many fields have their own professional terms. For example, the auto repair industry, the chef industry and other fields have their own professional terms, and our seamless steel pipe factory is no exception. We also have professional terms. If you don’t understand it, you may com...Read more -
Measurement method of straightness of steel pipe
Generally speaking, there are two ways to calculate straightness or curvature: 1、 Local curvature of seamless steel pipe or straight seam steel pipe: measure the chord height (mm) at the maximum bending of the steel pipe with a ruler with a length of one meter, which is the value of local curv...Read more -
Characteristics and application of finishing pipe
Finish rolled pipe, also known as cold-rolled precision steel pipe, is a production process of seamless steel pipe. Characteristics of finish rolled pipe: 1. The tolerance dimension accuracy of cold rolled precision steel pipe is high, and the product accuracy is controlled within ± 0.05mm...Read more -
Difference between cold rolled precision steel pipe and cold drawn seamless steel pipe
Cold rolled precision steel pipe is a kind of high-precision steel pipe material after cold drawing or hot rolling. Because there is no oxide layer on the surface and inner wall of cold-rolled precision steel pipe, no leakage under high pressure, high precision, high brightness, cold bending fixe...Read more -
Application of medium and low pressure boiler tubes
Medium and low pressure steam boiler tubes are made of steel ingots or solid tube blanks through perforation, and then made by hot rolling, cold rolling or cold drawing. Seamless steel pipe has a tight position in China’s steel pipe industry. According to incomplete statistics, there are ab...Read more -
Application of medium and low pressure steam boiler pipe
Medium and low pressure steam boiler pipe is made of steel ingot or solid pipe blank through perforation, and then made by hot rolling, cold rolling or cold drawing. Seamless steel pipe has a tight position in China’s steel pipe industry. According to incomplete statistics, there are about ...Read more -
Characteristics of cold drawn finish rolled pipe
Cold drawn finish rolled pipe, also known as cold rolled tight steel pipe, is a manufacturing process of finish drawn pipe. Features of finish rolled pipe: 1. The size accuracy of cold drawn finish rolled pipe is high, the product accuracy is controlled at ± 5mm, the surface and inner wall brig...Read more