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Steel Tube Weld Cold Crack
Cold crack reasons: the person to be subjected to welding when a large tensile force can be easily torn in the process of cooling the welding material hardenability; welding cooling rate was too late to escape the residual hydrogen in the weld, a hydrogen atom bonded to a hydrogen molecules to a ...Read more -
How to check the quality of galvanized seamless steel pipe?
There are two types of galvanized seamless steel pipes, hot-dip galvanizing (hot-dip galvanizing) and cold-dip galvanizing (electro-galvanizing). Hot-dip galvanizing has a thick galvanized layer, which has the advantages of uniform coating, strong adhesion, and long service life. However, the cos...Read more -
What are the application fields of welded steel pipe?
Welded steel pipes are widely used in the structural parts of bicycles, motorcycles, tractors, automobiles and large buses. The pipe has a large forging coefficient, strong bending and torsion resistance, smooth surface and light weight. Variable cross-section tubes are used to make collector pol...Read more -
Treatment method for damage of parts of cold drawn welded pipe
The maintenance of cold drawn welded pipe requires regular maintenance according to the corresponding maintenance standards. Even if the working condition is good, it is necessary to carry out all-round maintenance on the welded pipe unit to fundamentally avoid mechanical failure and ensure smoot...Read more -
Identification method of welded pipe and seamless pipe
There are three main ways to identify welded pipes and seamless pipes (smls): 1. Metallographic method Metallographic method is one of the main methods to distinguish welded pipes and seamless pipes. High-frequency resistance welded pipe (ERW) does not add welding materials, so the weld seam in t...Read more -
Steel Pipe Uses in Gas Project
Steel pipe is the most widely used gas pipe project. Its main advantages are: high strength, good toughness, bearing stress, impact resistance and tight, good plasticity, easy welding and thermal processing, the wall thickness is thinner, saving metal. But its poor corrosion resistance, need to h...Read more -
Is carbon steel pipe a welded steel pipe?
Is carbon steel pipe a welded steel pipe? Carbon steel pipe is not welded steel pipe. Carbon steel pipe refers to the specific material of steel pipe is carbon steel, which refers to iron-carbon alloy with carbon content Wc less than 2.11%. In addition to carbon, it generally contains a small amo...Read more -
Advantages of carbon steel pipe
Due to the continuous development of urbanization, materials in the building materials market emerge in endlessly. Although these materials are relatively common in our daily life, people who do not usually run in the building materials market may not know carbon steel pipes. We will not understa...Read more -
ASTM A36 carbon steel pipe
ASTM A36 conforms to the standards of the American Society for Testing and Materials, and the ordinary carbon steel pipes produced according to the ASME standards are equivalent to China’s Q235 material, which belongs to the American Standard and Common carbon steel plate. ASTM A36 is suita...Read more -
Common Surface Defects of Welded Steel Pipe
Common surface defects of welded steel pipe: (1) layered steel Layered wall steel tube means the cross section is divided into two floors, exposed steel surface showing the hierarchical vertical cracks. Some exhibits inside and outside surfaces of steel recessed or raised locally, layered renderi...Read more -
3PE Spiral Steel Pipe in Oil and Gas Pipelines Use
3PE anti-corrosion steel pipe for buried pipeline life is critical, the same material pipes buried in the ground for decades and some non-corrosive, and some years it leaks occur. Because they use different outer coating. In which ordinary steel for use in harsh environmental conditions, there wi...Read more -
Carbon Steel Weldability
Welding means for welding materials under defined conditions for the construction of a member according to the design requirements, and the ability to meet the requirements of the predetermined service. By welding materials, welding, component type and use requirements affecting four factors. Low...Read more