双槽圆管外径尺寸
50.8mm 15×15mm 1.2﹏1.5mm
76.2mm 25×25mm 1.5﹏2.0mm
3.单槽椭圆管外径尺寸 
60×30mm 15×20mm 1.2﹏2.0mm
80×40mm 24×24mm 1.2﹏2.0mm
80×40mm 25×25mm 1.2﹏2.0mm
80×37.7mm 33×26mm 1.5mm
87×65mm 24×28mm 1.2﹏2.0mm
100×50mm 30×30mm 1.2﹏2.0mm
100×50mm 25×30mm 1.2﹏2.0mm
110×40mm 33×26mm 1.2﹏2.0mm
110×40mm 24×24mm 1.2﹏2.0mm
4.单槽方管外径尺寸
31.8×31.8mm 15×15mm 1.2﹏2.0mm
50×40mm 25×20mm 1.2﹏2.0mm
60×40mm 24×24mm 1.5mm
75×45mm 20×25mm 1.5~2.0mm
50×50mm 20×20mm 1.5~2.0mm
140×50mm 25×20mm 1.5~2.0mm
5.双槽方管
40×40mm 15×15mm 1.2~2.0mm
40×40mm 20×20mm 1.2~2.0mm