Select a Product Part NumberMaterialSizePipe OD ASTB10Aluminum1" (25mm) ASTB15Aluminum1-1/4" (32mm) ASTB20Aluminum1-1/2" (40mm) ASTB30Aluminum2-1/2" (65mm) ASTB35Aluminum3" (75mm) ASTB40Aluminum4" (100mm) ASTB60Aluminum6" (150mm) RSTB10316 Stainless Steel1" (25mm)33.4mm RSTB15316 Stainless Steel1-1/4" (32mm)42.2mm RSTB20316 Stainless Steel1-1/2" (40mm)48.3mm RSTB25316 Stainless Steel2" (50mm)60.3mm RSTB30316 Stainless Steel2-1/2" (63.5mm (USA))73.0mm RSTB35316 Stainless Steel3" (75mm)75.0mm RSTB40316 Stainless Steel4" (100mm)114.3mm RSTB60316 Stainless Steel6" (150mm)168.0mm RSTB80316 Stainless Steel8" (200mm)219.1mm STB1Unplated Steel1/2" (15mm)21.3mm STB10Unplated Steel1" (25mm)33.4mm STB100Unplated Steel10" (250mm)273.0mm STB120Unplated Steel12" (300mm)323.9mm STB15Unplated Steel1-1/4" (32mm)42.2mm STB20Unplated Steel1-1/2" (40mm)48.3mm STB25Unplated Steel2" (50mm)60.3mm STB30Unplated Steel2-1/2" (65mm) STB35Unplated Steel3" (75mm)75.0mm STB40Unplated Steel4" (100mm)114.3mm STB5Unplated Steel3/4" (20mm)26.7mm STB50Unplated Steel5" (125mm)139.7mm STB60Unplated Steel6" (150mm) STB80Unplated Steel8" (200mm)219.1mm ASTB80Aluminum8" (200mm) ASTB100Aluminum10" (250mm) ASTB50Aluminum5" (125mm) RSTB5316 Stainless Steel3/4" (20mm)26.7mm ASTB25Aluminum2" (50mm)