Standard : ASTM
TL1406 steel sheet and strip size, shape, weight and tolerances shall comply with the provisions of Q / BQB 301's.
Steel sheet and strip surface quality is divided into two by the
Grade
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Suitable surface treatments
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feature
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Ordinary level surface（FA）
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Rolling surface
Pickled surface
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Allow the surface depth (or height) no more than half the plate thickness tolerance of pitting, concave, scratches and other minor, localized imperfections, but should ensure that the minimum thickness of the steel sheet and strip allowed.
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Higher surface（FB）
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Pickled surface
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Allowed surface does not affect the moldability of local imperfections, such as minor scratches, slight indentation, slight pitting, slight roll printing and color and so on.
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TL1406 steel structural parts can be used for good formability, such as wheels, large Liangheng Liang, etc.
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