管件类: 弯头、三通、四通、活接头、卜芯、大小头、管帽、堵头、内丝、外丝、翻边、异径管。
By several decades of exploration and practice, the designer has profound acquaintance with stressing mechanism of choke plug that does not rely on shear force to maintain the balance.经过几十年的探索和实践,设计人员对封堵堵头的受力机理已有了深刻地认识,堵头并不完全是靠基础面的剪摩作用维持平衡。