Carbon Steel Pipe

Large diameter steel pipe often refers to the out diameter with more than 1000mm. large diameter steel pipe use is generally more widely, generally used for large-scale pipeline projects, water gas engineering, pipe network construction of large projects.

Large diameter seamless steel pipe is a kind of engineering material widely used in petroleum, automobile, ship and other industries. The biggest difference between this material and the general steel pipe is that the thickness of its steel pipe wall is special. We generally take the outer diameter of steel pipe as a reference to measure the wall thickness. The distinctive feature of large-caliber thick wall seamless steel pipe is that the ratio of wall thickness to pipe diameter is greater than 0.02. If this condition is not met, it is not called thick wall steel pipe, but should be classified as thin wall steel pipe.

Large straight seam steel pipe generally refers to the straight seam steel pipe with an outer diameter of more than 500mm. At present, the maximum diameter of double weld can reach 2020mm, and the maximum diameter of single weld can reach 1220mm. Large straight seam steel pipe generally refers to the straight seam steel pipe with an outer diameter of more than 500mm. At present, the maximum diameter of double weld can reach 2020mm, and the maximum diameter of single weld can reach 1220mm. The common materials of large straight seam steel pipe are Q235A, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X70, X80.

The main production technology is double-sided submerged arc welding. The products meet the relevant standards and requirements through bending, seam, internal welding, external welding, straightening, flat head and other processes.

1. Large diameter steel pipe impact toughness galvanized square pipe: at a high speed on the parts of the load is called impact load, metal under the impact of load resistance damage ability is called impact toughness.
2. Large diameter steel pipe strength: strength refers to the resistance of metal materials to damage (excessive plastic deformation or fracture) under static charge. Due to the mode of action of the load has tensile, compression, bending, shear and other forms, so the strength is also divided into tensile strength, compressive strength, flexural strength, shear strength and so on. There is often a corresponding relationship between various strengths, and tensile strength is generally used as a more basic strength pointer.
3. Large diameter steel pipe seamless and weld: large diameter steel pipe is the seamless tube extrusion molding.
4. Large diameter steel pipe plasticity: plasticity refers to the ability of metal materials to produce plastic deformation (long-term deformation) without destruction under the action of load.
5. Fatigue of large diameter steel pipes: the strength, plasticity and hardness discussed above are all indicators of mechanical properties of metals under static load. In fact, many machine parts are operated under cyclic loads, and fatigue can occur under these conditions.
6. Large diameter steel pipe hardness: hardness is a measure of the degree of metal materials. At present, the hardness measurement method is commonly used in the production of indenter hardness method, it is the corresponding geometric shape of the indenter under the corresponding load into the surface of the tested metal material, according to the degree of being pressed to determine the hardness value.

Large diameter steel pipe often refers to the out diameter with more than 1000mm. large diameter steel pipe use is generally more widely, generally used for large-scale pipeline projects, water gas engineering, pipe network construction of large projects.

1. Petrochemical: crude oil, refined oil, petrochemical raw material finished product pipeline and oil field pipe network.
2. Natural gas: subsea and onshore long-distance pipelines; Natural gas receiving station transmission pipe; Gas field and urban natural gas pipeline network.
3. Coal: transportation of coal, coal water slurry, etc.
4. Structure: pier steel pipe pile tube curtain; Steel pipes for high-rise buildings and bridge structures; Structural steel pipes for offshore platforms.
5. Other categories: tap water delivery; Power plant drainage pipe line and high pressure pipeline.
 

1. Large diameter steel pipe has good adhesion, corrosion resistance, which can be resistant to acid, alkali and other chemical corrosion, non-toxic, does not rust, abrasion resistance, impact resistance, permeability, smooth pipe surface will not adhere to any substance, can reduce the transmission of resistance, large diameter steel pipe to improve traffic and transportation efficiency, reduce delivery pressure loss.
2. Coating solvent-free, no leaking substances, and thus will not contaminate the transmission medium, thus ensuring fluid purity and hygiene at -40 ℃ to +80 ℃ range can be used alternately hot and cold cycles, aging, no cracks, which can in cold areas such harsh environments.

As a leading line pipe distributor, Metleader has been exporting line pipes with big quantity to many countries and areas. Our company have been passed several certificates including ISO9001: 2008, ISO14001, OHSAS18001, CE certificate, one member of supplier system of Sinopec, and CNPC. In situations like high pressure, temperature, and corrosion, our Carbon Steel Pipes are perfectly suitable. We will provide the best service to our customers. welcome your inquiry timely sales@metleader.com .