Handling and Storage 1) The system components must be protected against weather, UV radiation and contamination. The components must be stored at minimum temperature of + 5 0C and storeroom should be separated from such areas where solvents, adhesives, paints or similar products are stored. Pipes in stock must be supported along their whole length to avoid deflection. Pipes should be stored in a pile with the maximum height of 1.0 m.
2) Pipes should be handled with care, avoiding any impact or deformation, especially during transport. They should be transported and stored in horizontal position on even, flat surfaces. During their transport it is not allowed to drag pipes over the ground or lorry deck. Bending of pipes should be avoided.
3) Bending - large bends can be obtained by cold forming. If the bend radius is shorter than 8 times the diameter of the pipe, it is recommended to heat up the part concerned by means of a hot air blower. (Use of a flame is strictly forbidden)
Joints of the indo green pipes and fittings are usually jointed together by poly-fusion welding which is a fundamental property of this system. This process consists of mixing of melted material of external surface of the pipe and internal surface of the fitting, after heating them up to 260 oC to 280 oC on the small welding machine called poly-fusion device. Properly made welded joint, when cut through, shows no traces of contact surface between two elements i.e. pipe and fitting in the entire volume of joint. Thus fusion process gives homogeneous, integral long lasting leak proof joints.
Cut the pipe square to the required length by cutter. Deburr the cut end if necessary. Pipe ends must be clean cut at right angles.
Prior to welding, the pipe and fitting should be dried and properly cleaned.
Mark the required insertion depth (welding depth) on the pipe with the help of suitable marker.
Ensure that the indicator light on the welding device signals that the device is hot enough (260 °C ) for welding. First weld can be made after 5 minutes when .heating light gets off. Heat the pipe and fitting on the polyfusion device as per the recommended heating times. (The heating time starts, when pipe and fitting have been pushed to the correct welding depth on the matrices.) While heating the pipe and fitting in the matrices, apply slight pressure from both sides.
After specified heating time remove the pipe and fitting out of the matrices. Heated end of pipe should be pushed in to the flared end of the hot fitting down to the previously marked depth. Do not turn or twist the pipe or fitting while pushing in to the matrices and pulling out of the matrices.
After the specified cooling time, the joint gets a first stiffness, after this phase next joint can be made.