勾型扳手:又称月牙形扳手，俗称勾扳子，用于拧转厚度受限制的扁螺母等；专用于拆装车辆,机械设备上的圆螺母,卡槽分为长方形卡槽和圆形卡槽.适用圆螺母的外径范围:S:22~26S:28~32S:34~36S:38~42S:45~52S:55~62S:68~72S:78~85S:90~95S:100~110S:115~130S:135~145S:150~160S:165~170S:180~200S:200~220S:240~260S:260~280S:280~300S:300~320S:320~350S:360~380S:380~400S:400~420沧州德安防爆特种工具制造有限公司生产的防爆工具包括以下几大类：一、防爆手拉葫芦、防爆滑车、防爆台虎钳、防爆套筒及附件类二、各种防爆扳手、防爆管钳类，如防爆梅花呆扳手、防爆敲击扳手三、防爆锤子类，如防爆八角锤、防爆奶头锤、防爆榔头四、防爆泥子刀、防爆除锈刀、防爆扁铲类、防爆挫类五、防爆撬棍类六、防爆钳子、防爆剪刀类，如防爆克丝钳、防爆鲤鱼钳七、防爆螺丝刀类防爆***、防爆听针类八、防爆提油泵、防爆水桶、防爆拉马等杂品九、防爆组合套装工具类.十：防爆***静电释放器（专利产品）、不锈钢防磁工具)