Low welding crack sensitivity of steel WDB620 
 WDB620 is Wugang west to east to adapt to and meet the research and development of hydropower projects penstock, scroll case with new low-60kg class high strength steel weld crack susceptibility (referred to as CF steel), points C, D two levels. Available 8-100mm Thickness Gauge Plate, where <= 50mm thick steel plate produced by TMCP technology,> 50-100mm steel production process by quenching and tempering, steel has good strength and toughness match, excellent low temperature impact toughness and cold formability good welding performance, especially <= 50mm steel plate with no preheating before welding, heat treatment after welding without the characteristics of the site construction is simple. From 2001 has been the successful development of dozens of large and medium hydropower to meet domestic penstock, spiral case of the use of technology requirements, simplifying the steel production process, saving production costs. At present, the plate number of Hydropower Design Institute has been approved and construction units, a total supply capacity of 10,000 tons or more, while the steel can also be used for bridges, ships, offshore oil platforms, mining machinery, engineering machinery and other industries. 
 ? Technical delivery conditions: 
 ? 1, controlled rolling and tempering time of delivery, Pcm <= 0.2%, Ceq <= 0.42%; quenched state delivery Pcm <= 0.24%. 
 ? 2, 炲 refining method: Steel from the electric smelting + furnace refining, vacuum treatment and after VD. 
 ? 3, mechanical and technological properties: 
 ? 
 o corresponding to the foreign grades plate: HITEN610U2, SUMITEN62F. 
 o specifications are available from stock or futures, please be rolling. 
 o Thank you for your interest!