高精度专用冠齿轮牙齿。
高性能降维。
执行671规格符合API（美国石油学会）一致。
在处理钢合金和建设取得的阻力，表面硬度和冲击强度方面的优点。
动平衡的各个组成部分和组装单元。

High precision special crown gear teeth.
High performance with reduced dimensions.
Execution in conformity with API 671 specifications (American Petroleum Institute).
Construction in alloy and treated steel to obtain the best features in terms of resistance, surface hardness and impact strength.
Dynamic balancing of the individual components and of the assembled unit.
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