Q690E high strength steel chemical composition: C: 0.08-0.15, Si: 0.17-0.37, Mn: 0.40-0.70, S: ≤0.035, P: ≤0.035, Cr: 0.30～0.60, Cu: ≤0.030, Ni: ≤0.030, V: 0.15-0.30, Mo: 0.25-0.35 Q690E mechanical properties: Tensile strength σb (MPa): ≥440 Yield strength σs (MPa): ≥225 Elongation δ5 (%): ≥22 Reduction of area ψ (%): ≥50 Impact energy Akv (J): ≥78
According to the data of Tianyan Inspection, recently, a series of changes have taken place in the steel e-commerce company Minmetals E-commerce Co., Ltd., and Alibaba's investment entity, Hangzhou Ali Venture Capital Co., Ltd., has withdrawn from its ranks of shareholders. Previously, Alibaba Banner held 44% of the company's shares. Minmetals E-Commerce Co., Ltd.'s business scope includes international ship management; international shipping; domestic water transportation; online trade agents; online operation of computers, metal materials, hardware, etc.
Hot-rolled coil is a commonly used steel product in the industry. It has a relatively wide variety of products and a wide range of uses. A572 Gr 65 ms steel coil, Hot-rolled coils are widely used in related industries such as petrochemical equipment, automobiles and bridges. Hot-rolled coils are also used in machinery industries such as ships and automobiles because of their good toughness and relatively high strength.
Seamless steel pipe refers to the steel pipe made of a whole piece of metal without joints on the surface. According to the production method, it can be divided into hot rolling tube, cold rolling tube, cold drawing tube, A572 Gr 65 ms steel coil, extrusion tube and spinning tube. According to the shape of the section, it can be divided into two types: circular and irregular. The seamless tube has a maximum diameter of 650 mm (expanding tube) and a minimum diameter of 0.3 mm (capillary tube), which can be divided into thick walled tube and thin walled tube according to the thickness.
