The bending test is the main item to measure the technical performance of thin coil, but the requirements of various galvanized coil are not consistent, the American standard in addition to the structural level, the rest do not require bending and tensile test.
And Japan in addition to structural level, building corrugated coil and general corrugated coil, the rest are required to make bending test.
Requirements: technical performance galvanized coil bending 180, the outer surface of the zinc layer shall not be separated, coil base shall not crack and fracture.
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