Q345 large-diameter spiral steel pipe is a general term, generally referring to Q345 large-diameter spiral steel pipe with a diameter greater than 1 meter. […]

Q235B spiral tube is a material commonly used in spiral tubes. It is a spiral seam steel pipe welded by automatic double-wire double-sided submerged arc welding process, which is made of strip steel coil as raw material, extruded at regular temperature. […]

Q235A spiral steel pipe is a kind of carbon steel spiral steel pipe. Our commonly used materials are Q235B, Q355B and so on. Now the most commonly used material is Q235B, and Q235A is basically replaced by Q235B material due to the lower steel grade. […]

35# steel pipe is a kind of material in steel. It is a high-quality carbon structural steel. […]

45Mn2 alloy steel pipe is a medium-carbon quenched and tempered steel with high strength, wear resistance and hardenability. The critical hardening diameter in oil is 10-25 mm, and the critical hardening diameter in water is 22-45 mm. […]