need to pay attention for 4m cement pipe while producing

1200 × 4000 cement pipe mould is emerging in recent years,used for producing a 4 m length, diameter 1200mm flexible socket concrete pipe , the socket depth of the mold is completely designed and manufactured in accordance with national standards to ensure that the pipe size space reserved interface with diameter head installation.

to make perfect 4m cement pipe, belowing technique is required:

1. cement pipe mould requires sufficient rigidity, which is to ensure the mold  can still maintain the status after repeated turnover

2. The production quality:
 in addition to accurate size, the joint, detail design of the retaining ring is also very important. our factory produced cement pipe mold using a single slit mould, compared to the double-slit mould, its easy to remove, not eacy deformed.

According to the pipe making machine process characteristics and pipe size after molding , ring control bore size should be 3-5mm larger than a predetermined value  In addition, the cement pipe vertical cylinder mold should be avoided to prevent the adapter plate welded straight degree of deformation of the tube.

Cement concrete pipes belonging to certain  impermeability  concrete. According to the characteristics of suspended roller molding process, with the concrete mix design, the sand rate higher than ordinary concrete 2% to 6%, so have enough stone mortar filled the gap, to achieve a higher density. Usually for hanging roller machine ,concrete sand was 30% to 40%. Construction by the test match, for C30 concrete, we use the mix (cement: sand: stone: water) is 1: 2.25: 4.00: 0.39, the work of 27 degrees, 36% sand.

Due to low water-cement ratio of cement concrete pipes, gravel aggregate and often be used, not easy to disperse evenly when stirring, for these reasons, we have chosen to compulsory mixer in the construction, and an appropriate extension of stirring constantly, usually from 2 ~ 3min, while strictly control aggregate weighing accuracy. But in the actual operation, taking into account the quality of appearance after forming tube, usually for the first time, more dilute slurry mix slump controlled between 2 ~ 4cm.