如一一理论质量包括卡箍、端管、密封橡胶圈、螺栓和螺母的质量。一一Theoretical weight will be consisted of the weight of the clamps、end rings、sealing rubber rings、bolts and nuts。一一公称通径 150-700mm 的卡箍由两瓣组成,大于700-1000mm由四瓣组成。一一Clamp with