Metal pipe quite joint

The invention relates to a metal pipe quite joint. The structure of a biting and grabbing piece is improved, the biting and grabbing piece is an annular piece with an opening, one end of the biting and grabbing piece is provided with clamping claws, the outer wall of the other end is provided with an annular positioning seat, and the inner wall of the middle is provided with clamping teeth; and an elastic positioning piece is arranged between the biting and grabbing piece and a limiting fixer and located on the outer side of the biting and grabbing piece. A double-locking structure is provided, the elastic positioning piece has sufficient flexible space, and the metal pipe quite joint has the advantages of being reasonable in structure, good in locking effect and reliable and stable. 本发明涉及种金属管快速接头，对咬抓件的结构进行改进，咬抓件为带开口的环状件，咬抓件的端设置有卡抓，另端的外壁设置有环状定位座，中部内壁设置有卡齿，弹性定位件设置在咬抓件与限位固定器之间并位于咬抓件的外侧，本发明具有两重锁紧结构，弹性定位件具有充分伸缩空间，具有结构合理，锁定效果好，可靠稳定的特点。