Features:
ER70S-6 is a kind of mild steel copper coated welding wire, suitable for 100% CO2 and Argon& CO2 mixed gas protective welding with stable feasibility, good welding seams, less spatters and excellent welding process properties.
Application:
Used to weld ship building steel(A,B,D,E,A36,D36,E36)and equivalent mild steel or 550Mpa grade mild alloy steel, such as container building, construction machine, railway construction, pressure vessel for semi-auto or automatic gas shielded welding.
Welding Wire ,Wire Welding,Stainless Steel Welding Wire,Metal Welding Wire Jiangyin Vankey Machinery Technology Co.,Ltd , https://www.wkweldingwire.com
Accelerated elimination of calcium carbide coking industry
At the start of this year, the National Development and Reform Commission (NDRC) released the list of companies to be phased out in the second batch of calcium carbide and coking industries. Notably, Shanxi and Inner Mongolia accounted for about 70% of the total eliminated production capacity. This rapid action, coming less than three months after the first batch was announced, reflects a growing national effort to accelerate the elimination of outdated industrial capacities.
Calcium carbide and coking are key sectors for energy conservation and emission reduction. The outdated facilities are typically characterized by inefficient equipment, high energy consumption, and significant pollution, which have made them a priority for government regulation in recent years. Both Shanxi and Inner Mongolia are major producers of these materials, with Shanxi alone accounting for over 40% of national calcium carbide output and more than 45% of coke production. These provinces host numerous small-scale plants with capacities ranging from 20,000 to 50,000 tons annually, which are now under strict scrutiny for closure.
A total of 211 enterprises were involved in this round of elimination: 20 in the calcium carbide industry and 146 in coking. A total of 22 and 213 outdated pieces of equipment were removed, respectively, resulting in the elimination of 221,400 tons/year of calcium carbide capacity and 12.23 million tons/year of coking capacity. Geographically, the calcium carbide phase-outs were concentrated in Shanxi, where 15 companies and 17 units were affected, eliminating 107,400 tons/year. In contrast, the coking sector’s outdated capacity was mainly found in both Shanxi and Inner Mongolia, with 34 and 75 companies involved, respectively, removing 4.89 million and 3.9 million tons/year.
This initiative aligns with previous efforts by the NDRC to regulate these industries. For instance, in October 2007, the first batch of companies was announced, including 20 calcium carbide firms and 146 coking enterprises. Shanxi and Inner Mongolia played central roles in both rounds of elimination, highlighting their significance in the national industrial landscape.
Shanxi has imposed strict controls on new calcium carbide projects during the “Eleventh Five-Year Plan†period, aiming to limit production to 2.65 million tons by 2009. By 2007, over 58% of its outdated capacity had already been phased out. In Inner Mongolia, a quota system was introduced, restricting calcium carbide output to 5 million tons in 2007, with further reductions planned. Enterprises failing to meet quotas faced power cuts, reinforcing the policy's enforcement.
The broader calcium carbide industry faces overcapacity, with an average operating rate below 50%, leading to weak profitability. Outdated facilities not only consume more energy and pollute more but also distort market competition. However, after the elimination of these capacities, larger installations are expected to increase their utilization, minimizing supply disruptions.
Similarly, the coking industry is struggling with overcapacity and environmental concerns. Shanxi, as the largest producer, has committed to shutting down all backward and illegal coking operations by 2008, closing 103 projects and eliminating 24.07 million tons of outdated capacity.
While such measures may temporarily affect local GDP, they bring long-term benefits by protecting the environment and improving resource efficiency. For example, in the first half of 2007, Shanxi’s large-scale coke enterprises reported a 51.4% increase in revenue and a 163% rise in profits and taxes. Energy consumption per unit of industrial added value and per unit of GDP also saw a “double drop,†reversing a trend of rising energy use during the Tenth Five-Year Plan.