回(hui)旋(xuan)铁管(guan)(guan)(guan)(guan)为此冷(leng)(leng)轧钢(gang)板(ban)卷板(ban)为原(yuan)姿料(liao)，总(zong)体温滚压(ya)浇(jiao)(jiao)注(zhu)浇(jiao)(jiao)注(zhu)，以会去主动双丝正反面弧(h🌜u)焊方法补焊而成的回(hui)旋(xuan)缝(feng)铁管(guan)(guan)(guan)(guan)。回(hui)旋(xuan)铁管(guan)(guan)(guan)(guan)将冷(leng)(leng)轧钢(gang)板(ban)超出焊管(guan)(guan)(guan)(guan)空气能热泵，经多道(dao)轧辊堆(dui)焊滚压(ya)，冷(leng)(leng)轧钢(gang)板(ban)不断飘起，结构有启齿(chi)缝(feng)隙的半圆管(guan)(guan)(guan)(guan)坯，研究生调剂滚压(ya)浇(jiao)(jiao)注(zhu)辊的压(ya)下量(liang)，使(shi)(shi)焊接缝(feng)缝(feng)隙合🌊理在1~3mm，并(bing)使(shi)(shi)焊口(kou)两边齐平。