... choose. certification by ISO9001 HF V HF vertical extruding pipe-making machine is the ideal equipment to manufacture cement pipe. Reasonbale desigh ... inner diameter 150-800mm . The tubular products made by this machine has the following advantages :average wall thickness ,smooth inner ... (inside mm): φ200, φ300, φ400, φ500, Ø600, 700, φ800, φ1000 (2)Wall Thickness: 200 30mm, φ300 30mm, φ400 40mm, φ500 ...