As structural steel, SS400/SS490/SS540 follows certain standard specifications, such as SS400 complies with JIS G 3101 standard, which ensures the stability and reliability of product quality and can meet the requirements of different projects for steel performance.
20/45/C22/C45 steel bar is a high-quality low-carbon steel, which is cold extruded, carburized and hardened steel. In the unheat-treated state, the hardness is ≤156HBS. Normalizing can promote the spheroidization of the steel, refine the large proeutectoid ferrite, and improve the cutting performance of the blank less than 160HBS.
Black square tube, also known as black square tube, is a common building material, usually made of hot-rolled or cold-drawn steel strip. Its surface is usually treated with rust prevention to prevent oxidation and corrosion.
Q235B is a common carbon structural steel. "Q" stands for yield strength and "235" means that the yield strength of this steel is 235MPa. Q235B galvanized steel coil is a layer of zinc coated on the surface of Q235B steel through hot-dip plating and other processes to enhance its corrosion resistance. The thickness of the zinc layer generally has a variety of specifications, such as Z30 - 275g/m² mentioned on Alibaba's English site.
Hot dip zinc coated steel pipe is made of Q195, Q235, Q345, etc., with a thickness between 2.75mm - 6mm, and a length of 12m, 6m, 6.4m, etc. The length can also be customized. The surface is galvanized, and the galvanized layer can provide good anti-corrosion protection for the steel pipe.
A36 and A53 GradeB galvanized square pipes are common construction and industrial steels with a variety of characteristics and uses. A36 is a common carbon steel with good strength and toughness; A53 GradeB is a welded or seamless carbon steel pipe commonly used in structural and mechanical applications. Galvanizing can improve the corrosion resistance of steel and extend its service life.
