They feature hardened and ground outer race and low-carbonalloy steel hardened studs and inner RACES.
它们的特点和地面硬化外圈和低碳合金钢硬化螺栓和内在的比赛。
2
The low-carbonalloy pump body, impeller and stirrer are highly corrosion-resistant, and the pump body is sprayed with multiple layers of anti-corrosion paint externally to ensure long service life.
泵体、叶轮、搅拌器采用低碳合金材料，具有较强抗腐蚀性，泵体表面喷涂多层防腐漆，使用寿命长。
3
Top lowcarbonalloy steel as gear material, adapting automatic carburizing and quenching heat treatment.