JB T 4751-2003 螺旋板式换热器.pdf
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本标准规定了螺旋板式换热器的设计、制造、检验与验收要求。本标准适用于可拆和不可拆换热器。本标准适用的公称直径和公称压力范围：a) 公称直径DN2200mm；b) 公称压力PN2.5MPa；c) 公称直径(mm)和公称压力(MPa)的乘积不大于3000。注：超出上述参数范围的换热器也可参照本标准进行设计与制造；但PN4.0MPa时，须经全国锅炉压力容器标准化技术委员会评定认可。本标准适用的设计温度范围：a) 不可拆换热器的设计温度范围按钢材允许的使用温度确定；b) 可拆换热器的设计温度范围按垫片允许的使用温度确定。
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