技術(shù)參數(shù)：內(nèi)徑（mm）夾布層數(shù)（層）螺旋鋼絲直徑（mm）管接頭長度（mm）膠管長度公稱尺寸公差尺寸公差尺寸（m）公差（mm）381.2232.0751010150511.2342.61001510150641.5342.61001510150761.5452.61001510150891.5453.210015101501022.0453.212520101501272.0563.212520101501522.0564.015020101502032.5675.0