Heat treatment is a very important process to improve the performance of BV grade D refrigerated cargo ship steel etc. metal materials. The process of heating, heat preservation and cooling the steel in solid state to obtain the required structure and properties.
On March 19, 2020 the us international trade commission (ITC) vote on imports from China and India's carbon alloy BV grade D refrigerated cargo ship steel steel screw (Carbon and Alloy Steel Threaded Rod) to make a positive final anti-dumping and anti-subsidy industry damage. All five members of the international trade commission voted in favor of the ruling. The us department of commerce will issue anti-dumping and countervailing duty orders on imports of BV grade D refrigerated cargo ship steel carbon alloy steel screws from China and India, according to the itc's affirmative ruling.
The weight of seamless steel pipe is only 1 / 5 of that of square steel. Seamless steel pipe corrosion resistance acid, alkali, salt and atmospheric environment corrosion, high temperature resistance, good impact and fatigue resistance, do not need regular maintenance. The effective service life of product BV grade D refrigerated cargo ship steel more than 15 years.
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