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Common Surface Treatments For Bolts

This article introduces four common surface treatments for bolts: coating, hot-dip galvanizing, electroplating, and Dacro. These methods can improve the corrosion resistance and appearance of bolts. Coating and electroplating can make the surface of the bolt smoother and more beautiful, but they are not durable and are easily scratched; hot-dip galvanizing and Dacro can enhance the anti-corrosion ability, but the surface is not beautiful enough. Now there is a hexavalent chromium-free formula for Dacro, which is more environmentally friendly. This article briefly introduces the advantages and disadvantages of each treatment method, as well as their importance.

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A graph showing the price of steel flange in Chinese yuan.

Analysis of Steel Prices 2021

During the 75th UN General Assembly in 2020, China proposed that “carbon dioxide emissions should peak by 2030 and achieve carbon neutralization by 2060”.

At present, this goal has been formally entered into the administrative planning of the Chinese government, both in public meetings and local government policies.

According to China’s current production technology, carbon emissions control in the short term can only reduce steel production. Therefore, from the macro forecast, the future steel production will be reduced.

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A group of people sitting in a conference room, discussing the design and specifications of a Customized Flange.

JMET CORP holds the 2022 annual summary and commendation conference

On the afternoon of January 16th, JMET held its 2022 summary and commendation conference in the conference hall on the 2nd floor of Building G of Sainty International Group. Gao Song, the general manager of Sainty International Group, attended the meeting and delivered a speech, and Zhou An, the vice general manager of Sainty International Group and chairman of the company, presented the work report for 2022. The conference commended the advanced collectives and individuals of 2022.

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Application and Difference of Hot Forging and Cold Heading Processes in Fastener Products

This article discusses the application and difference of hot forging and cold heading processes in fastener products. Cold heading is fully mechanized, resulting in a low defect rate, but the strength of products produced is limited to a maximum of 10.9 and requires heat treatment to reach higher strength levels. Cold heading machines have a basic minimum order quantity of 1 ton. On the other hand, hot forging involves manual labor and can produce products with up to 12.9 strength. However, the labor cost is high, and the hot forging process is more expensive than cold heading in mass production. The article concludes that the hot forging process can be used for small inquiry quantities and low appearance requirements.

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A graph displaying the price of steel, specifically for HEX BOLT.

STEEL PRICE ANALYSIS REPORT FROM DECEMBER TO FEBRUARY

The market demand has fallen, the prices of production factors have continued to rise, and the risk of stagflation has increased. Under such a background, steel prices will gradually break away from excessive premiums and slowly return to regular price fluctuations.

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A graph displaying the fluctuating price of steel in China.

STEEL PRICE ANALYSIS REPORT FROM JUNE TO JULY

Affected by many factors, China’s steel prices have fluctuated tremendously this year, and the price regular pattern in previous years have lost their reference value. Therefore, this article analyzes the changes in steel prices from May to July 19 from multiple angles, and predicts steel prices in the next August to November.

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