方形管规格表 Ф6x1Ф34x2-8Ф71x3-11Ф152x3-21 Ф8x1-2Ф36x2-8Ф73x3-11Ф153x3-25 Ф11x1-2Ф38x2-8Ф76x2-16Ф168x3-31 Ф12x1-3Ф41x2-8Ф81x2-16Ф181x3-31 Ф14x1-4Ф42x2-8Ф83x2-16Ф213x4-35 Ф16x1-4Ф45x2-8Ф83x2-16Ф245x5-35 Ф18x1-4Ф48x2-8Ф35x2.5-16Ф273x5-41 Ф21x1-5Ф51x2-8Ф112x2.5-18Ф325x5-41 Ф22x1-5Ф51x2-8Ф118x2.5-18Ф355x7-41 Ф25x1.5-5Ф57x2-11Ф114x2.5-18Ф377x8-45 Ф27x2-5Ф61x2-11Ф121x3-18Ф426x8-51 Ф28x2-5Ф63x2-11Ф127x3-18Ф456x8-51 Ф31x2-8Ф65x3-11Ф133x3-18Ф531x8-51 Ф32x2-8Ф68x3-11Ф141x3-21Ф631x11-41。