1. square plastic tube 2. Material: acrylic,polycarbonate 3. Diameter: ... 5mm We have more than 8 years experience about square plastic tube extrusion. We have 10 production lines and complete ... 164, 172,180,190,200,225,250,300,400 square plastic pipe(mm):8,10,58,66,75 triangular tube ... 75,65 We also supply the square tubes, deltoid tubes and some special style for customer's request. square plastic tube