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Bearing seamless steel pipe physical properties

The physical properties of bearing steel mainly to check the microstructure, decarburized layer, non-metallic inclusions, mainly based on low magnification. Under normal circumstances are hot-rolled annealing, cold-drawn annealing delivery. Delivery status should be indicated in the contract. Low magnification of the organization must have no shrinkage, subcutaneous bubbles, white spots and micro-pores. Center loose, generally loose no more than 1.5, segregation shall not exceed 2. Annealing of steel should be uniform distribution of fine-grained pearlite. Depth of decarburization, non-metallic inclusions and carbide non-uniformity shall comply with the relevant provisions of the relevant national standards.

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