1.单槽圆管外径尺寸 槽宽ⅹ槽深 壁厚 38.1mm 15×15mm 1.0~2.0mm 38.1mm 23.5 ×13mm 1.0~2.0mm 42.2mm 19.7 ×26.2mm 1.0~2.0mm 42.4mm 15×15mm 1.0~2.0mm 42.4mm 24×24mm 1.0~2.0mm 48.3mm 19.7 ×31.8mm 1.0~2.0mm 48.3mm 27×30mm 1.0~2.0mm 50.8mm 15×15mm 1.0~2.0mm 50.8mm 20×20mm 1.0~2.0mm 50.8mm 13.8 ×15mm 1.0~2.0mm 63.5mm 20×20mm 1.0~2.0mm 63.5mm 25×25mm 1.0~2.0mm 63.5mm 15×15mm 1.0~2.0mm 76mm 25×25mm 1.5~2.5mm 60