thread head meaning in Chinese

螺纹头

The company ' s main products include : ordinary - type , forward - and - backforward - thread typeandcalibre - changed type , three series and 50 - odd varieties of steel straight thread connecting sleeve piece and steel straight thread screw rolling machine , screw rolling wheel , cutting tool , reinforced thread head special gauge , moment spanner ect . , auxiliary tools which are used in construction
公司主要产品有标准型、正反丝型、变径型三大系列五十多个品种的建筑用钢筋直螺纹连接套筒和钢筋直螺纹（剥肋）滚丝机及滚丝轮、切削刀具、钢筋丝头专用量规、力矩扳手等辅具。