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As a conventionally used bridge structure steel plate, A588 Grade A, A588 Grade B, A588 Grade K strucutural steel, Q420qENH steel plate is mainly used in places where roads and bridges require relatively high conditions, and can be rolled and produced according to customer specified requirements.
As a basic building material, steel plates are currently widely used in automobiles, shipbuilding, chemical industry, aerospace and other fields. Reasonable selection of flaw detection methods to ensure the quality of A588 Grade A, A588 Grade B, A588 Grade K strucutural steel steel plates is of great significance to safe production. Common defects of steel plates are folding, inclusion, shrinkage, air bubbles, delamination and cracks. These problems can be discovered in time through flaw detection.
How to distinguish the inferior steel plate? 1. The surface of the fake and inferior steel plate is easy to produce scab. 2. The material of fake and inferior steel plate is not uniform and there are many impurities. The surface of fake and inferior steel plate is often pitted. Pitting is an irregular and uneven defect on the surface of A588 Grade A, A588 Grade B, A588 Grade K strucutural steel, steel plate caused by serious wear of rolling groove. Due to the pursuit of profit by the manufacturers of fake and inferior steel plates, the groove rolling often exceeds the standard.
On March 19, 2020 the us international trade commission (ITC) vote on imports from China and India's carbon alloy A588 Grade A, A588 Grade B, A588 Grade K strucutural 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 A588 Grade A, A588 Grade B, A588 Grade K strucutural steel carbon alloy steel screws from China and India, according to the itc's affirmative ruling.