Due to the long pipeline construction period, it is generally required if the soil resistivity is less than 20Q. m, it is necessary to install a magnesium anode for temporary protection and connect it to the pipeline through a test pile. When the impressed current cathodic protection is put into use, the temporary protection is […]
Description of pipeline anti corrosion Pipeline anti corrosion is a measurement to slow down or prevent corrosion and deterioration of the pipeline under the influence of chemical or electrochemical action or the metabolic activities of microorganisms What is pipeline corrosion phenomenon? Corrosion can be understood as a chemical reaction of materials in the environment in which […]
As buried pipe delivering water, 3PE anti-corrosion coated pipes has been widely used in government projects in various countries. This is the first time for Decho to export 3PE coated pipes since its new establishment in 2018 The customer for this order is a steel distributor in Bangladesh. He has been engaged in steel pipe sales for nearly 20 years and has a good supply relationship with the Bangladesh […]
YK30 steel is an oil-quenched carbon tool steel, often used in stamping dies, fixtures, gauges, paper knives, auxiliary tools, etc. Characteristic Vacuum degassing refined steel with stable quality; Good hardenability, oil-cooled hardening (less quenching and deformation); Good toughness and wear resistance, durable tools; YK30 adds Mn and Cr on the basis of SK105 to improve […]
How are seamless steel pipes produced? The production process of seamless steel pipes is mainly divided into two types: cold-drawn and hot-rolled. The production process of cold-rolled seamless steel pipes is more complicated than that of hot-rolled steel pipes. The pipe billet must firstly be under three-roll continuous rolling, and then sizing test after extrusion. If […]
Steel and aluminum have different chemical and physical properties, such as melting point, thermal expansion coefficient, elastic modulus, etc. When welding steel and aluminum by hot working welding process, they will face many problems, that is, aluminum and steel are prone to form very hard and brittle IMP phases (Intermetallic phase), the greater the welding […]
