>>> IMS ÖZEL ÇELIK TUBES
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Precision seamless tubes for hydraulic cylinders.
They are produced with two dimensional series with limited tolerance values to undergo, on the inner diameter, to peeling and rolling or polishing.
Two different grades of easily weldable steel are used, both of which can be supplied with a treatment of the inclusions so as to guarantee improved tool machinability.
The product can be supplied with two different machining allowances, either the ' 'DL Series ' ' or the ' 'DP Series ' '.
The DL series is characterised by a limited internal machining allowance which make s the tubes suitable for honing and/or lapping operations.
The DP series includes a kind of machining allowance which makes it possible for the tubes to undergo both skiving treatments with detachable chips and roller burnishing on their internal diameter.
Steel grades :
The supplied products can be made out of two different types of steel, either the PHC 355 or the PHC 460 type, and they can be supplied in two different supply conditions, either SR (stress relieving thermal treatment after the last cold-drawing operation) or N (normalizing treatment after the last colddrawing operation). Such supply conditions correspond to the following standards :
A Option : the PHC 460 grade can be produced with a controlled sulphur content of 0.020 ÷ 0.035%, so as to allow a better tool machinability.
B Option : it is possible to ask for different heat treatments, mechanical propertiesand steel grades.
Surface protection :
The surface of the supplied products is cold-finished. The tubes are protected with oil both internally and externally, so as to guarantee a temporary protection against oxidation under cover.
Hot rolled seamless tubes for mechanical applications.
They are in accordance to UNI EN 10297-1. These products are to be used in the fields specified by the ‘’Machinery Directive 98/37/EC’’, as well in mechanics and in the field of machinery construction. Particular applications, such as pressure vessels and structural applications, are not included. These applications refer to other EN standards, EC Directives or national laws in force in the different countries where the products are used.
Steel grades :
the following tables contains data on the applications, chemical analysis and mechanical properties of the stocked steel types. The products are designed in accordance with the EN 10297 standard and fulfill all the requirements foreseen by the relevant national regulations.