We use strip steels or steel plates as billets, bend them into tube shells with different methods, and then weld them with different ways so as to obtain welded pipes with sealed cross sections formed by a certain strength welding seams. There is a wide range of materials for producing welded pipes, including carbon steels,...

Ductile Cast Iron Pipes are mainly used for transporting tap water and are the ideal choices for tap water pipes. Mechanical Properties Minimum tensile strength: 420/Mpa; minimum yield strength: 300/Mpa; minimum elongation: 7% . GB / T13295-2008 ISO2531-2009 Diameter: DN80-DN2600 Advantages When ductile iron pipes are...

OCTG is a kind of upscale product made of steel pipes, and it has many kinds. There are 15 kinds of specifications for OCTG diameters, and the outer diameter ranges from 114.3mm to 508mm. There are 11 kinds of steel grades, such as J55, K55, etc. There are many types and requirements of the pipe ends' threads, and...

Stainless steel pipes are hollow long round steels, which are mainly used in industrial pipelines and mechanical components of petroleum, chemical, medical, food, light and mechanical instrument industries, etc. Under the condition of having the same bending and torsional strength, stainless steel pipes also have lighter...

With the development of China's national economy, large-diameter LSAW pipes are more and more welcomed by oil and gas, ore pulp transportation and steel structure engineering industries due to the advantages of strong bearing ability, low resistance, low temperature resistance, corrosion resistance and easy installation. ...

1. The main features of seamless steel pipe are welding without seam and can bear great pressure. The products can be made from rough casts or cold drawn parts. 2.Precision steel pipes appear just in recent years, and there are strict tolerance and roughness between the inner hole and the outer wall size. Cold drawn precision...

Fertilizer pipe is mainly used for transporting high temperature and high pressure fluid. Pipes for fertilizer: GB6479-2000(seamless steel pipe for high pressure fertilizer equipment). It is mainly used for high-temperature and high-pressure chemical equipment. The typical kinds of materials are 20, 16Mn, 12CrMo, 12Cr2Mo,...

Choose the right site and warehouse: 1) The site and warehouse for storing steel products should be clean, with good drainage, and away from factories and mines which produce harmful gases or dust. Weeds and other stuff should be removed in order to keep the steel clean.  2) Steel products should not be put with acid,...

1. Welded steel pipe(GB/T3092-1993) is used for transporting low-pressure fluid, commonly known as black steel pipe. It is applied to low pressure fluid such as  water, gas, air, oil and heating steam, as well as other fields. Steel pipe is classified into ordinary steel pipe and heavy steel pipe based on wall thickness;...

The performances of square tube 1. The analysis of plasticity of square tube  Plasticity refers to the plastic deformation(permanent deformation) of metal material under the action of the load, which can not be damaged. 2. The analysis of hardness of square tube  Hardness is a measure of softness and hardness...