通键式气胀轴可选用高强度的挤制铝材料制成，也可采用钢材料，常见规格有3"和6"，也可按用户要求定制。特点是维修简便，重量轻，空气需要量少，成本低。
Continuous Lug type air shafts can be made of extruded aluminium for high strength,the common specifications 3" and 6", Bespeaking available.Features:Easy maintenance,Light weight,Low air volum requirement and Cost effective.
