Pipe welding jobs

Recanatiservice: Welding for elettrofusione –. Preparation of the tube Welding for elettrofusione –. Preparation of the tube. The present documentation has been draft from the ITALIAN INSTITUTE Of PLASTICS - RECOMMENDATION nr. 10 - of June 1981 - Modernization May 1999 –. Installation of PE aqueducts. This system of welding concurs connections between tube and tube, between tube and connection, by means of element with resistance built-in electrical worker. The weldings for the realization of connections of user by means of collars belong to this system also of taken with resistance built-in electrical worker. The apparatus in order to knit (welder) is constituted from a distributing device of energy that can be to manual commando, semi-automatic or automatic rifle, characterizing several the types of welders. These devices regulate you the amount of energy in function to how much come they demanded from the circuit electrical worker incorporated in the elettrosaldabile element. Every welder must be only employed for the elettrosaldabili connections for which it has been qualified. It is not possible to knit elettrosaldabili elements with welders pertaining to various systems. Polyvalent "equipment exists in commerce specific" that concurs to knit elettrosaldabili pertaining to various systems. The execution of the weldings must be executed in correspondence to norm UNI 10521, to happen in a possibly dry place, protected from unfavorable atmospheric agents (rain, wind and humidity) and to temperatures ambient comprised between -5°.C and +40°.C. Where that was not possible, is indispensable to adopt opportune sagacities actions protect the welding operation. Before the welding operations it is necessary: - to verify the heads, so that the extremities to knit are cut flat and orthogonal to the proprioasse. - to correct the eventual ovalizzazioni of the advanced tubes to 1.5%, by means of I affixed arrotondatori devices to you and/or allineatori, waves to bring back the dimensions within the values tolerate to you. - to clean up with rags or soft papers, the parts to knit eliminating mud traces, powder, greased. CONCURRED E' I DO NOT USE It OF BURLAP EMERY, RASPS Or OTHER TOOLS $R-DI.FORTUNA FOR the REMOVAL Of The OXIDATION LAYER. - To clean up, if necessary, the zones abraded by means of cotton cloth white man or paper monouso and appropriate detergent liquid, and more just:. The use of others detergents is not concurred. - To clean up the inner part of the elettrosaldabile with the detergent and not to abrade it in the more absolute way. - To mark on the heads to combine the depth of insertion of the elettrosaldabile by means of one matita cerosa for approximately 1/3 of the circumference of the elements combining, inserting therefore the heads in the elettrosaldabile and to block the splice in the allineatore. - To verify the correct insertion of the elettrosaldabile on the elements to knit and their coassialità. - To execute the welding operation adhering itself to the directives given from the constructor of the elettrosaldabili and the welder. THE EXECUTED WELDINGS ARE NOT RELIABLE NOT HOLDING ACCOUNT OF THE PRESCRIPTION OF WHICH OVER, OR COMPYING ONLY PARTIALLY WITH THE SAME ONES. The welding parameters adopt you for the reached every execution of single can be record to you in a welding report.