■产品特点
.铸铝合金外壳,表面喷塑
.圆筒隔爆面防爆性能好 安全可靠
.铃碗表面镀铍青铜,打击时不会引起火花.
■Features
。The shell is made of diecasted AI-alloy with plastic-sprayed surface
。Cylinder enclosure can be well explosion-proof safe and secure
。The surface of bell is brass plated which won＇t produce sparkle when being hitten
■型号含义 ■Model Meaning