Two type, commonly combination washer , or male cone screw cooperate with female cylindrical screw as Europe standard.

有两种，一般的组合垫圈，或者欧标用圆柱内螺纹配圆锥外螺纹。

youdao

Two type, commonly combination washer , or male cone screw cooperate with female cylindrical screw as Europe standard.

有两种，一般的组合垫圈，或者欧标用圆柱内螺纹配圆锥外螺纹。

youdao