GERDAU SIDENOR CALIBRADOS



		"Maximum benefits in the Quality of our steel"

In our steel we seek the maximum benefits and we only obtain them by controlling the quality from beginning to end, we never leave anything at random.

Our products are means of transformation in cold and we apply non-destructive controls to all of them.These controls are made methodically and constantly day by day, according to the necessity, at the end of the line of manufacture in cold, assuring a finished product free of defects. Thereby products free of internal and external defects are guaranteed, and all this fulfilling rigorously the norm or specification that protects these products.

STEEL

The steel we provide includes practically all the steel of industrial use that nowadays is used.

We can calibrate by drawing, turning and/or rectifying most of the construction and quality steels contemplated in the effective norms.

If you wish you can see the tables of aid that we resented afterwards of the chemical compositions and equivalencies, or those of mechanical characteristics of the most common steel.

To visualise tables in PDF format you have to download Acrobat Reader. Click on the link to go to the Adobe official website and download the free program.
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	STEEL	Composition	Mechanics Carac

	Easy mecanization	See table	See table

	Not alloyed	See table	See table

	Cemented	See table	See table

	Temper and dried out	See table	See table

	Marthensitic stainless	See table	----

	Austenitics stainless	See table	----

Download technical handbook

PROFILES and SIZES

The forms that can be manufactured are in bars of round, square, hexagonal profile, in addition to the octagonal.We include practically any diameter in our products.Normally they are provided in bars that can go from 3 to 6 meters of length or in a bobbin when it is a material of small diameter.

If you wish you can consult the weights of the steel bars according to the different profiles in the following tables. They are aid tables that we facilitated to you.

		We have grouped the steel bars with round, square, hexagonal and octagonal profile in "various" and those of rectangular profile in another profile.
TYPES OF PROFILES	WEIGHTS

Various	See table

Rectangular	See table

			FINAL CONTROL Once the product is finished we apply the following controls:
			1.	Superficial Inspection:Controls with induced current.Circograf: Equipment for the non destructive verification of round ferric, austenitic and non ferric (wires, bars, rods and tubes), that works on the base of the method of the induced current (DIN EN 10277-1) by means of rotating bobbins which collect signals. This method offers a sensitivity of extremely high detection of defects. Defectomat: Equipment for the non destructive verification of round ferric, austenitic and non ferric (wires, bars and tubes), that works on the base of the method of the induced current (DIN EN 10277-1) by means of way through bobbins.
			2.	Antimixtures Inspection: Spectro-test.
			3.	Tolerance:In continuous, by means of laser incorporated in all the lines of manufacture in cold.

			INDUSTRIAL APPLICATIONS The products thus obtained could be adapted to the multiple applications: construction, mechanics in general, automobile, oleo-pneumatic, galvanised, etc.



			The control of the Quality operates with the procedures of the System of Quality implanted in our Group according to norm ISO/TS 16949 and norm OHSAS 18001. The internal control of production participates actively and is a fundamental part in our productive cycle. Constantly samples are taken, according to the frequency established in our sampling plans assuring: the continuous verification of the characteristics of the product, the fulfilment of the norm of reference or the specification of our customer indicated in his orders. Our internal laboratory of control , is equipped with the most modern means of control and it is at the exigency level that our customers require.The tests needed are made so that the control of the product and its consequent verification is guaranteed:

1.	Mechanical tests:
	�	Machine of traction Shimadzu Rh-30 with a capacity of 20 Tn, equipped with extensometer and computer science program JBA/FORDEF. The test consists of putting under a test tube a tensile stress, generally until the break up, to determine one or several of the characteristics that are mentioned next: -Traction Resistance (Rm) -Conventional Elastic limit (Rp) -Total Extension of breakage (AT or A).
2.	Chemical/spectrometric tests: The method is applicable to all the qualities of steel, in calibrated/turned or laminated.The used equipment is the spectrometer model SPECTROLAB M of the Spectro company.The equipment is completely computerizad and makes immediate controls of all the samples that are taken from the productive cycle.
3.	Metallurgical studies: The method is applicable for the microscopic observation of the structure of the steel in order to determine the heat treatment, which they were put under, or any other structural characteristic of interest.

Our metallurgical laboratory is qualified to carry out tests in the steel, tests that are applicable to the norms in force. All these tests are made with the Maximum attention by our technicians and with the suitable methods, with the purpose of obtaining to the Maximum reliability of the results.

We also count on a photographic device to allow, in case of necessity, the photographic documentation of the test made.