... with average wall thickness * High compressive strength * Productivity: 30-100pcs/8h Concrete pipe Making Machine Brief intruduction a) HF vertical extruding pipe-making machine ... high efficiency and release the mold immediately to maintenance, etc. Available raw materials sand, gravel, stone chips, fly ash and slag mixed with ... , 100mm for dia 1000mmSpeed of main shaft: 45 rolls / min Productivity(can ...