At present, the main city of Maanshan Maanshan Steel, Laiwu Iron and Steel Co., Ltd., Rizhao Iron and Steel, Jinxi and Changzhi steel production. Magang is China's first production of H-shaped steel enterprises. September 1, 2005, China Brand Strategy Promotion Committee General Administration of Quality Supervision, Inspection and Quarantine authorized to formalize Maanshan Iron & Steel Corporation (Magang) hot-rolled H-beam as Chinese famous brand. September 1, 2005, China Brand Strategy Promotion Committee General Administration of Quality Supervision, Inspection and Quarantine authorized to formalize Shandong Laiwu Iron and Steel Group Corporation (Laiwu Steel) hot-rolled H-beam for the Chinese brand-name products. Die vacuum heat treatment technology vacuum heat treatment technology is developed in recent years a new type of steel heat treatment technology h latest prices, it has the characteristics h beam length, it is mold making urgently needed, such as to prevent oxidation and heating decarburization, vacuum degassing or outgassing light steel h-beam, eliminate hydrogen embrittlement, thereby enhancing material (parts) of ductility, toughness and fatigue strength. Vacuum heating is slow, small parts inside and outside temperature difference and other factors, determine the vacuum heat treatment process caused by deformation of parts and small. Large steel h | Fair Commerce Bo | Hefei h beam provided by the Hefei exhibition Bo Trading Company. Large steel h | Fair Commerce Bo | h beam Hefei Hefei Show Bo Trading Company (www.hfzhanbo.com) (www.hfzhanbo.com) this year introduced a new upgrade, the above picture is for reference only, please call this page or Tel picture on to obtain the latest information, contact: Mr. Huang.