Bend PVC Pipe using the Series 'B' PVC Bendit bends PVC Pipe with inside diameter of 1 ¼ inch to 6 inch PVC pipe. The Series ‘B’ has an outside diameter of 1.06” and fits in 1 -1/4 and larger schedule 40 or 80 PVC pipe. The PVC ‘B’ Series PVC Bendits come in 3, 6 9 and the new 20 foot lengths. The 20B is used for 20’ lengths of pipe.