Comparison chart of S690QL1 steel tubing structural

The company attaches great importance to systematic management, and has passed the S690QL1 steel tubing ISO9001 quality management system, ISO14001 environmental management system, OHSAS18001 occupational health and safety management system, and ISO 9001: 2008 certification. Insist on S690QL1 steel tubing quality and promote brand development. The company's physical and chemical testing equipment is fully equipped and the quality management operation is standardized. Since 2002, the national, provincial, and municipal product quality inspection random inspection pass rates are all 100%.

St52-3 steel, S690QL1 steel tubing is low alloy high strength steel. The main characteristics of St52-3 steel are high tensile strength and yield point. St52-3 steel is used in civil construction, underground engineering, bridge structure, ocean structure, container manufacturing, automobile and machine manufacturing. Based on the principle of quality oriented, the company has established a perfect quality standard inspection system to provide customers with high-quality and low-cost steel products and after-sales services, which has been supported and praised by new and old users from all walks of life.

Common carbon killed steel plates are steel plates made by hot-rolling ordinary carbon structural steel killed billets. The advantage of S690QL1 steel tubing, killed steel is that the chemical composition is uniform, so the mechanical properties of each part are also uniform, the welding performance and plasticity are good, and the corrosion resistance is strong. Common killed steel plates are mainly used to produce components that withstand impact at low temperatures, welded structures and other structural parts that require higher strength.

If the chromium content in S690QL1 steel tubing alloy steel reaches about 12%, dense chromium oxides will be formed on the surface of the steel, which will greatly improve the corrosion resistance of steel in oxidizing media. Chromium, aluminum, silicon and other elements can improve the oxidation resistance of steel and the corrosion resistance of high-temperature gas, but excessive aluminum and silicon will deteriorate the thermoplasticity of steel.

13CrMo4-5 seamless pipe is a kind of pressure resistant seamless pipe in accordance with the European standard EN 10216-2. The chemical composition of 13CrMo4-5 seamless pipe is C 0.10-0.17, Si ≤ 0.35, Mn 0.40-0.70, P ≤ 0.025, S ≤ 0.020, Cr 0.70-1.15, Ni ≤ 0.30, Mo 0.40-0.60, Al ≤ 0.04, Cu ≤ 0.03. Mechanical properties of 13CrMo4-5 seamless pipe: tensile strength: 440-590 MPa, yield strength: ≥ 290 MPa, elongation: ≥ 22%, impact energy: ≥ 40J. S690QL1 steel tubing, 13CrMo4-5 seamless pipe is used in petroleum, chemical industry, power station, boiler and so on industries.

Before delivering our hot rolled plate product we apply various tests to check the quality of carbon steel S690QL1 steel tubing plates such as- mechanical test, chemical test, hardness test, toughness test, eddy current test, impact test, micro test, flaring test, flattening test, etc. We are provided best packing for structural steel plates to avoid rust. Our after-sales service team will contact you if you have any question.