135 【Reference】Calculation of irregular pipe (required pipe length .) dimensions (When the dimension of elbow-to-elbow, elbow-to-tee and tee-to-tee is set to L) R (Outer Pipe Length) R (Inner Pipe Length) L (Overall Length) Size Required Pipe Length R Inner Pipe Outer Pipe Inner Pipe Outer Pipe 16 65 L- (460-7 × TS Socket quantity) L- (300-3 × VU Socket quantity) 20 65 L- (470-7 × TS Socket quantity) L- (300-3 × VU Socket quantity) 25 75 L- (524-7 × TS Socket quantity) L- (344-4 × VU Socket quantity) 40 75 L- (554-7 × TS Socket quantity) L- (344-4 × VU Socket quantity) 50 100 L- (658-7 × TS Socket quantity) L- (434-5 × VU Socket quantity) 65 125 L- (770-23 × TS Socket quantity) L- (550-5 × VU Socket quantity) 75 150 L- (892-27 × TS Socket quantity) L- (666-5 × VU Socket quantity) 100 200 L- (1,148-32 × TS Socket quantity) L- (880-5 × VU Socket quantity) 125 250 L- (1,382-32 × TS Socket quantity) L- (1,074-6 × VU Socket quantity) 150 250 L- (1,438-36 × TS Socket quantity) L- (1,074-7 × VU Socket quantity)