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
[ China Agricultural Machinery Industry News ] At present, it is at the critical stage of “Sanqiu†production. Affected by the continuous rainy weather, the autumn harvest in the main producing areas was blocked, and the planting progress was slower than that of the previous year. Recently, the Ministry of Agriculture dispatched 5 supervision teams to go to 10 wheat and rape producing provinces to carry out work supervision, promote the implementation of various measures, and complete the tasks of autumn and winter with high standards and high quality.
The supervision and implementation of work supervision and technical services combined, the focus is on three aspects: First, understand the situation. In each province, we investigated 2 counties, went deep into the rural areas where agriculture and agriculture were tight in the autumn and winter, and went to the village to go to the fields to understand the progress of autumn harvest, the quality of sowing, the supply of agricultural materials and the price changes, and listened to grassroots cadres and peasants. Suggestions. The second is to study countermeasures. This year's main producing areas have a lot of rain, which makes it difficult to harvest at the right time and plant at the right time. The supervision team worked with the local agricultural department to study countermeasures, strengthen information services, deploy agricultural machinery, and carry out social services such as sub-cultivation, collection and storage, and unified management, speed up the production of “three autumns†and promote key measures. implement. The third is to carry out guidance services. Focusing on the overall requirements for the target tasks and planting structure adjustments for this autumn and winter planting, we will guide local local conditions to develop varieties of strong gluten weak wheat, “double low†rapeseed and other market needs, and vigorously promote precision seeding, seed coating, and chemical dressing. And other green technologies to improve the scientific and technological content of autumn and winter production.