No. 1 edge: has a precise profile (round or square), suitable for edge conditions that require very precise width or plating. This edge is often used in applications that require high precision, such as electronic components, medical devices, etc.
No. 2 edge: the natural edge formed by cold rolling of hot-rolled strip steel, without additional processing. This edge is often used in applications that do not require high precision, such as building materials, mechanical parts, etc.
No. 3 edge: the approximate square edge formed by trimming, the burr is not eliminated, and the location of the burr cannot necessarily be determined by conventional winding or stacking. This edge is often used in applications that do not require high precision, such as packaging materials, paper, etc.
No. 4 edge: the round edge formed by the natural edge of hot-rolled steel strip or longitudinally cut steel strip through rolling, suitable for situations where width tolerance and edge conditions are not so strict. This edge is often used in applications that require a certain degree of precision, but do not require very high precision, such as mechanical parts, automotive parts, etc.
No. 5 edge: the approximate square edge made of trimming material, the burr is usually eliminated by rolling or filing. This edge is usually used in applications that require a certain degree of accuracy but do not require very high accuracy, such as mechanical parts, electronic components, etc.
No. 6 edge: A square edge formed by rolling the natural edge of hot-rolled strip or longitudinally cut strip, suitable for situations where width tolerance and edge conditions are not so strict. This edge is usually used in applications that require a certain degree of accuracy but do not require very high accuracy, such as mechanical parts, automotive parts, etc.
Chamfered edge: A custom-shaped edge produced by mechanical chamfering using special tools. This edge is usually used in applications that require very high accuracy, such as aerospace, medical devices, etc.
