According to Chinese standard GB/T 1299-2014, the diameter of plastic mould steel round steel produced in China ranges from 6mm to 1000mm. the length of plastic mould steel round steel is generally 3m or 6m, which can also be adjusted according to the requirements of the negotiating parties. In terms of permissible deviations, the deviation of the diameter of the plastic mould steel round steel shall be in accordance with the requirements of the corresponding class H in GB/T 702-2008. The length deviation of plastic mould steel round steel should be in accordance with the corresponding L level requirements in GB/T 702-2008. The weight of the plastic mould steel round steel needs to be calculated according to the diameter and length. The specific weight values can be calculated using the formulae in the standard.

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