... , 133mm, 141mm, 152.4mm, 159mm, 168mm, 203mm, 219mm2) Square PipeSize: 10X10mm, 12X12mm, 12.7X12.7mm, 15X15mm, 17X17mm, 18X18mm, 19X19mm, 20X20mm, 22X22mm ... , 36X36mm, 38X38mm, 38.1X38.1mm, 40X40mm, 50X50mm, 50.8X50.8mm, 60X60mm, 70X70mm, 80X80mm, 90X90mm, 100X100mm3) Rectangle PipeSize: 10X15mm, 11X23mm, 12X24mm, 13X25mm ...