司筒与顶针配套使用叫做司筒针组件，是塑胶模具配件中的一种。在一般的模具厂中，老师傅习惯叫做推管，是一个道理
射咀、鹅头、压射头及料壶司筒采用德国优质热作钢制造，使用用寿命长；
Nozzle, gooes neck, injection plunger head and melting pot sleeve are made from hot work steel from Germany, so their life spans are long.
该产品具有良好易切削性能和机械加工性能，从而避免了薄壁推管(司筒)因热处理而产生变形。
The product has excellent tooling quality and machining performance, so as to alleviate and avoid the deformation of ejector pin because of heat treatment.
司钻摘掉辊筒离合器，刹住绞车。
The driller disengages the drum clutch and secures the drawworks.
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