Product News
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Characteristics of Spiral welded steel pipe and seamless pipe
Spiral welded steel pipe Spiral welded steel pipe is also known as the spiral steel pipe and spiral welded pipe,which is use low carbon structural steel or low alloy steel strip according to the angle of the spiral line (called the forming angle) rolled into a tube, and then the tube welded toget...Read more -
Causes and control of cold-rolled steel surface black spot defects
Causes and control of cold-rolled steel pipe surface black spot defects If the emulsion removal on strip surface is not clean, easy to form black spot defects after annealing, seriously affect the quality of the strip surface. There are for the following reasons: 1, chilled coil-shaped mass can s...Read more -
carbon steel pipe &seamless steel pipe
Carbon seamless steel pipe selling leads: ASTM A 53 specification for black steel seamless pipes ASTM A 106 Gr. B seamless carbon steel pipes for high-temperature service ASTM A 161 seamless low-carbon and carbon molybdenum steel still tubes for refinery service ASTM A179 specification for seamle...Read more -
Carbon Steel Pipe Classification
Carbon steel pipe is a hollow steel bar, a large number of pipes for transporting fluids such as oil, natural gas, water, gas, steam, etc. In addition, engaged in bending, torsional strength, lighter, so it widely used in the manufacture of mechanical parts and engineering structures. Also used i...Read more -
Resistance welding steel pipe application in petrochemical industry
Because the pipeline transportation is particularly suitable for transporting oil, gas, therefore, the pipeline in petroleum and petrochemical industry was widely used. Former petrifaction Corporation annual crude oil 120000000 T, most used by pipeline; annual production of steam, coal, diesel 50...Read more -
Quality identification techniques of large diameter thick-walled seamless steel pipe
The quality identification techniques of large diameter thick-walled seamless steel pipe are as follows: 1 Inferior large diameter thick-walled seamless pipe is easy to fold. The fold is formed on the surface of large diameter thick-walled seamless tube polyline, this defect is often longitudinal...Read more