BRIGHT STEEL BAR
Bright steel bar is carbon or alloy steel bar with shining bright surface which is improved by cold drawing, peeling, turning, grinding and polishing over hot rolled black surface bars. By cold drawing, the steel bar yield strength and tensile strength will be improved. By peeling and turning, the surface imperfections will be removed. By grinding, the diameter tolerance will be more precision. By polishing, the surface will be much more shining.
Except the shining bright surface, comparing with the hot rolled black surface bars, the bright steel bars has better surface roughness, better roundness, straightness, more precision size tolerance etc.
Heat treatment such as annealing, normalizing, quenching and tempering will be done before do cold finishing on the hot rolled bar to get bright steel bar, in such condition, the steel bright bar will get most suitable mechanical properties to meet different application requirement.
The advantages of steel bright bars we supply:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Heat treating furnaces to adjust the mechanical properties
3) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
4) Multiple packages to avoid broken packages and anti-rusty
Diameter tolerance
+0/-0.02mm
Straightness
0.5mm/m
Surface roughness
0.4um
Roundness
80% of diameter tolerance
Diameter range
14mm to 100mm
Steel grade
Kinds of carbon steel and alloy steel
Length
Any length can be cut with precision tolerance
Bright Steel Bar,Bright Steel Round Bar,Steel Bright Bar,Bright Polished Steel Bar,Alloy Steel Bright Bar Manufacturer SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdhighstrengthsteelbolts.com
Yesterday, the AQSIQ expert team led by Ma Xuetao, director of the Department of Science and Technology of the General Administration of Quality Supervision, Inspection and Quarantine of the General Administration of Quality Supervision, Inspection and Quarantine came to Shiyan to conduct research and demonstration on the National Automobile Parts Quality Supervision and Inspection Center (Shiyan) project. After investigation and verification, Cang Xuejun, head of the expert group, said that Shiyan was in line with the construction conditions for the National Auto Parts Product Quality Supervision and Inspection Center and agreed to establish the National Automobile Component Product Quality Supervision and Inspection Center (Shiyan). Deputy Mayor Zhang Huili participated in the research demonstration meeting.
The group of experts visited the Dongfeng Commercial Windmill Heavy Truck New Factory, Dongfeng Xiaokang Automobile Co., Ltd., and the National Auto Parts Product Quality Supervision and Inspection Center (Shiyan) project construction site to conduct research and visits, and heard relevant reports at the subsequent investigation and demonstration meeting held. Review related materials and credentials.
Zhang Huili expressed welcome on behalf of the municipal party committee and government to the arrival of the expert group. She said that the municipal party committee and the municipal government attached great importance to the construction of public inspection service platforms for auto parts and hoped that the expert group would provide more valuable opinions and build the national auto parts product quality supervision and inspection center (Shiyan) project into a model of the national quality inspection center.
The National Auto Parts Product Quality Supervision and Inspection Center (Shiyan) project was approved by the expert group