... , 400 SJ75/33 SJ75/33 600 5.0 480 SGB600 225- 600 400, 500, 600 SJ90/33 SJ75/33 800 5 ... .0 580 SGB800 225- 800 500, 600, 800 SJ120/33 SJ90/33 1000 5.0 750 ... comprehensive survey and research, we successfully explored this HDPE double wall corrugated pipe equipment, filling a gap which has hitherto exist in ... setting, storage, modify, alarm and other functions. PE Double-Wall Corrugated Pipe Line