Effect of cooling process on microstructure and properties of weather resistant Q355GNH steel

Considering the large workload of allocation and transportion for our steel materials, we have built special shipping department, and make it independent form transportation department. The transportation department is in charge of transporting steel materials from our mill and warehouse to the port, and our shipping department is in charge of the shipping matters. So that our whole shipping efficiency is improved, and shorten time for customers to receive goods.

The comprehensive mechanical properties of weather resistant Q355GNH steel, Q345B steel plate are good, the low temperature performance is acceptable, and the plasticity and weldability are good. Q345B steel is used for medium and low pressure containers, oil tanks, vehicles, cranes, mining machinery, power stations, bridges and other structures that bear dynamic loads, mechanical parts, building structures, general metal structural parts. Plate Q345B is the most versatile and the most used pressure special steel plate for container.

Normalizing is to heat the steel parts to 30~80℃above the critical temperature for a period of time. Then the parts are taken out of the furnace and cooled in air. Since the cooling rate of normalizing is faster than that of annealing, the strength and hardness of normalized weather resistant Q355GNH steel are higher than that of annealed weather resistant Q355GNH steel, but the elimination of internal stress is not as good as annealing. The normalizing operation of weather resistant Q355GNH steel is simple, the cost is low, the productivity is high, and it is widely used in actual production.

ASTM A333 Grade 6 pipe weather resistant Q355GNH steel for low temperature services at above -45℃.
Pipe Sizes: 1/8” to 24”
Wall thickness Schedules: SCH 10, SCH 20, SCH 40, SCH STD, SCH 80, SCH XS to SCH 160, SCH XXS
Length: Single Random Length, Double Random Length, 20 ft, 40 ft
Ends Types: Plain, Beveled
Coatings: 3PE/3LPE, FBE, Galvanized, Varnished, CRA or stainless clad and lined

The company adheres to the needs of customers, adheres to win-win integrity, and relies on scientific and technological innovation to continue to improve the level of logistics equipment technology and information technology, and enhance the logistics technology research and development and innovation capabilities. Based on market demand and innovation as the driving force for development, the company actively expands the field of logistics services, accelerates the extension of the logistics industry chain, and scientifically advances the diversification of the logistics industry.

The alloy steel plate is among our business scope, and it is one of our main product. If you have any demands or questions about alloy steel plate, such as 34CrMo4 weather resistant Q355GNH steel material properties, 42CrMo4 AISI equivalent, 12Cr1MoV equivalent ASTM, 40Cr material specification, 42CrMo hardness, 50CrMo4 chemical composition and so on, please free free to communicate with us. We have professional technical team and sales team, who will give you weather resistant Q355GNH steel professional answers and quotation about alloy steel plate in time.