无缝钢管的规格对照表如下：
大外径系列
DN15-ф18mm, DN20-ф25mm, DN25-ф32mm, DN32-ф38mm, DN40-ф45mm, DN50-ф57mm, DN65-ф73mm, DN80-ф89mm, DN100-ф108mm, DN125-ф133mm, DN150-ф159mm, DN200-ф219mm, DN250-ф273mm, DN300-ф325mm, DN350-ф377mm, DN400-ф426mm, DN450-ф480mm, DN500-ф530mm, DN600-ф630mm
小外径系列
DN15-ф18mm, DN20-ф25mm, DN25-ф32mm, DN32-ф38mm, DN40-ф45mm, DN50-ф57mm, DN65-ф73mm, DN80-ф89mm, DN100-ф108mm, DN125-ф133mm, DN150-ф159mm, DN200-ф219mm, DN250-ф273mm, DN300-ф325mm, DN350-ф377mm, DN400-ф426mm, DN450-ф480mm, DN500-ф530mm, DN600-ф630mm
其他规格
70*4.5-5-6-7-8-9-245*8-10-14-17-20, 12*1-1.5-2.5, 10-12-15-16-22-30-40, 73*4-4.5-5-6-7-8-273*7-8-10-16-18, 14*1.5-2.5-3, 9-10-12-15, 20-25-30-45-60, 78*4-4.5-5-6-7-8
这些规格涵盖了多种无缝钢管的尺寸，适用于不同的工业应用和需求。