Hot rolled GB 713 Q370R Pressure vessel steel plate

Q370R is a specific grade of high-strength steel plate manufactured to Chinese standard GB/T 713 for use in boilers and pressure vessels. It is a low-alloy steel that is known for its good resistance to hydrogen-induced cracking and sulfide stress corrosion cracking, making it suitable for applications in the chemical industry, petroleum, power plants, and gas storage. Its mechanical properties include a yield strength between 340-370 MPa and a tensile strength of 520-630MPa.

Note:

For Q345R and Q370R steel plates at thickness over 60mm, the carbon content can be increased 0.22% respectively; for Q245R steel plates at thickness over 60mm, the manganese content ban be increased 0.22% at most.

In order to improve performance of steel plates, the microelement (Nb, V and Ti) are allowed to be added in Q245R, Q345R and Q370R grade steels. The element content shall be filled in the quality guarantee. The content sum of the above three elements shall be no greater than 0.050% and 0.10% respectively.

Chemical Reaction Vessels

GB713 Q370R Boiler and Pressure Vessel Steel Plate is used in synthesis reactions (such as ammonia synthesis towers in fertilizer plants and polymerization reactors in chemical plants). It needs to withstand high temperatures and pressures (e.g., the ammonia synthesis tower operates at a pressure of 30MPa and a temperature of 450℃) and medium corrosion (such as hydrogen and acid gases) to ensure no leakage or structural failure occurs during the reaction process.

Petrochemical Storage Tanks and Towers

GB713 Q370R Low Temperature Pressure Vessel Steel Plate is used in storage tanks for crude oil, liquefied natural gas (LNG), and liquefied petroleum gas (LPG), as well as rectification towers and absorption towers in petroleum refining: normal temperature and pressure storage tanks (such as crude oil tanks); low-temperature storage tanks (such as LNG storage tanks, with temperatures as low as -162℃) require steel plates with excellent low-temperature toughness to avoid brittle fracture of steel at low temperatures; high-pressure hydrogenation towers (petrochemical hydrofining process).

Heat Exchange Vessels

GB713 Q370R High-quality Boiler Steel Plate is used in equipment for medium heat exchange (such as shell-and-tube heat exchangers and plate heat exchangers). Their shells and tube sheets need to withstand alternating hot and cold shocks, ensure fatigue resistance, and avoid weld cracking caused by frequent temperature changes.

Metallurgical Industry

The "blast furnace hot blast stove" in steel plants (which stores high-temperature hot air, with a pressure of 0.5-1.5MPa and a temperature of 1200℃) uses high-temperature resistant GB713 Q370R hot-rolled plate for its shell; the "autoclave" in non-ferrous metal smelting (such as the leaching autoclave in hydrometallurgical copper smelting) needs to be resistant to acid corrosion, and GB713 Q370R pressure vessel steel plate is commonly used.

GB713 Q370R Boiler steel plate,GB713 Q370R Pressure Vessel Steel plate, GB713 Q370R Storage Tanks Steel plate. GB713 Q370R Heat Exchanger Steel Plate .

UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.

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If you want to learn more about GNEE's products, you can send an email to alloy@gneesteelgroup.com. We are more than happy to assist you.