Cold drawn steel bar is produced by Hot Rolled Steel Bar or wire rod to get smooth surface, more precision size, higher mechanical properties, which improves machining characteristics. It can also get various sections and sizes. So cold drawn steel bar is a better choice for machining users.
For high carbon steel or alloy steel bars, to avoid the cracks in inner or surface, the bars are usually required to be annealed before cold drawing.
To get different mechanical properties or hardness depending on final usage, the cold drawn bars will also be heat treated such as annealed, normalized or quenched and tempered(Q&T).
For CNC machines usage, to get much more precision sizes or much more better surface roughness for chrome plating, the cold drawn steel bars can also be centerless ground or polished.
We have more advantages on producing cold drawn steel bars:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Wide range of cold drawn steel bar sizes: from 10mm to 150mm
3) Different cold drawing medias powder or oil to get different surface
4) Straightening machines to get better straightness up to 0.5mm/m
5) Grinding and polishing machines to get better roughness upto 0.4um
6) Heat treating furnaces to adjust the mechanical properties
7) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
8) Multiple packages to avoid broken packages and anti-rusty
Cold Drawn Steel Bar,Cold Drawn Steel Rod,Cold Drawn Steel,Cold Drawn Steel Bar Manufacturers,Cold Drawn Steel Properties SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdbrightsteelbar.com
Rapid growth momentum In October of this year, GM’s sales in China increased from 199,641 vehicles last year to 220,412 units, an increase of 10.4% year-on-year, which to some extent continued the high level of growth of 15% in September. In contrast, the current year's sales of GM in the United States increased only 1.7% year-on-year; the overall passenger car market in China saw a 4.2% decline.
Sales of Shanghai GM, which produced the Buick and Chevrolet brands, rose 4% year-on-year to 103,309 vehicles. SAIC-GM-Wuling, which produces Wuling Sunny Micros, contributed 111,957 units of sales, an increase of 19% year-on-year. In mid-October, General Motors announced that its cumulative sales in China this year have exceeded 2 million, and once again stressed that by 2015 sales in China will double to 5 million.
Wuling Microfabric Discounts Contributing Significantly Since January 2011, the Chinese government has eliminated auto sales tax deductions and vehicle tax rebates in rural areas, and General Motors and Toyota Motor have increased consumer discounts for this purpose and increased competition in the industry.
The Wuling Sunshine Minivan produced by SAIC-GM-Wuling has started to cut prices from the end of May and opened a larger discount in July to attract consumers. According to the data from the China Automobile Association, under the background of the slowdown in the growth of the Chinese auto market, cumulative sales in the first seven months of the year have fallen by around 10% year-on-year. Wuling also saw a drop in sales in July before it drastically stimulated the market.
According to Klaus Paur, executive director of Synovate Motoresearch's Synovate Markets Information & Automotive Research Co., Ltd., in Shanghai, “Wuling has given a substantial price reduction in order to maintain the original level of government concessions, which has an unexpected impact.â€
Last year, the total sales volume of General Motors in China was 2.35 million, of which SAIC-GM-Wuling occupied nearly half. This year is expected to maintain this situation.
Microcar price discount: The growth of GM sales in China
According to a recent disclosure by Bloomberg, GM’s sales in the Chinese market in October once again gained double-digit year-on-year growth; for several months, discounts have been the driving force behind growth, especially the microfabrication of SAIC-GM-Wuling’s production.