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Common Welding Defects
In the production process of steel welding, there will be the emergence of steel defects if the welding method is not correct. The most common defects are hot cracking, cold cracking, lamellar tearing, lack of fusion and incomplete penetration, stomata and slag. Hot cracking. It is produced duri...Read more -
Decarbonized of spiral steel pipe
Life and surface decarburization of spiral pipe is a definite link, if the rear surface decarbonization, spiral strength and wear resistance will reduce direct impact on the spiral of life. If the carbon layer on the spiral steel pipe not clean, spiral surface layer hardness and wear resistance w...Read more -
ERW steel pipe price list
ERW steel pipe price list Standard：GB/T3091-2008 specification Thickness GB/T3091 specification Thickness GB/T3091 Q235B Q345B Q235B Q345B 33.4 （1″） 2.1-2.4 604.29 645.71 Φ152 3.0-4.5 597.14 651.43 2.5-3.25 584.29 654.29 4.75-5.75 600.00 651.43 3.5-4.0 594.29 668...Read more -
Carbon steel seamless pipe
Carbon steel seamless pipe is a hollow cross section, no seams around long steel. Steel tube with a hollow cross-section, for a large number of pipes conveying fluid, such as the transportation of oil, natural gas, coal gas, water and some solid materials pipeline. Solid steel such as steel pipes...Read more -
Antirust varnish
Antirust varnish is a rust-proof to protect the metal surfaces from the atmosphere, water and other chemical or electrochemical corrosion coatings. Mainly divided into physical and chemical rust two categories. The former rely on a suitable pigments and paints with the formation of a dense film t...Read more -
Anti rust process
Anti rust process Steel surface treatment is mainly anti rust, the following is anti rust process: First step is to clean, use cleaning solvent emulsion cleaning the steel surface, in order to achieve the removal of oil, grease, dust, lubricants and similar organic matter, but it can not remove t...Read more