Uff. comm.: Lumezzane - Via P. Bolognini, 19 - Tel Vicenza: Grisignano di Zocco - Via Monte Ortigara, 25 - Tel

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1 Commercial organization Branches: Division TUBES: licensed distributors TenarisDalmine Brescia: Brescia - Via Stassano, 10 (zona Ind.) - Tel Seamless mechanical tubes. Bologna:40012 Lippo di Calderara di Reno - Via F.lli Rosselli, 9 - Tel Seamless mechanical tubes. Tubes for drawn and lapped cylinders Division ABRASION-RESISTANT PLATES: Products special antiabrasion and sheets: Milano: Cambiago - Via R. Sanzio, 7 - Tel Modena: Modena - Via Salvador Allende, 63 - Tel IMS S.p.A. - Headquarters: Via Alessandro Polini, Arcore - Milano - Tel Internet: ims.italia@ims-group.com Tubes division Hot-rolled olled seamless steel t tubes u b e s f for o r m mechanicale c h a n i c a l applications. Authorized distributor TenarisDalmine Edizione Settembre 2007 / Inglese Division LONG PRODUCTS: special structural steels - for tools and moulds Milano: Arcore - Via Alessandro Polini, Tel Torino: Orbassano - Strada Torino, 25/1 - Tel Brescia: Brescia - Via Stassano, 10 (zona Ind.) - Tel Brescia: Visano - Via dell Industria, 31 - Tel Uff. comm.: Lumezzane - Via P. Bolognini, 19 - Tel Padova: Limena - Via I Maggio, 11 - Tel Vicenza: Grisignano di Zocco - Via Monte Ortigara, 25 - Tel Bologna: Lippo di Calderara di Reno - Via San Vitalino, 40/A - Tel Division CHROMED BARS: Bologna:40012 Lippo di Calderara di Reno - Via F.lli Rosselli, 9 - Tel Division COLD WORKED: as drawn, grinded, peeled common steels, carbon, alloys and stainless steels. Milano: Cusano Milanino - Via Bellini, 2 - Tel Division STAINLESS STEEL: stainless steels - long products and profiles Milano: Arcore - Via Alessandro Polini, Tel PER UTENSILI SPECIALI ACCIAI

2 2 The hot-rolled seamless mechanical tubes are used in the mechanical field as well as in the field of machinery construction. They are produced in accordance with the current reference regulations and in compliance with the UNI EN10297:2003 standard. The supplied tubes are produced with a wide range of grades and dimensions, designed both for traditional and for special applications.

3 Hot-rolled seamless steel tubes for mechanical applications Product description and applications Tenaris produces tubes for mechanical applications in accordance with the European EN standard and the current national regulations. The steel grades provided are listed in the following table. The table also specifies an approximate correspondence between the steel grades foreseen by different regulations. The products described by such regulations are to be used in the fields specified by the Machinery directive 98/37/EC, as well as in mechanics and in the field of machinery construction. Particular applications, such as pressure vessels and structural applications, are not included. Such applications refer to different EN standards, EC directives or national laws in force in the different countries where the products are used. Service Centre IMS S.p.A. has various Service Centres at its disposal, where it is possible to ask for additional machining operations, such as custom-made cuts, chamfering, drilling and boring, as well as to agree on quantities, markings, and packaging different from the ones included in this catalogue. 1. Order definition Essential data Product: Mechanical tube (MT) Manufacturing norm Steel grade and heat treatment Nominal dimensions Outside diameter and wall thickness in mm Length Quantities and tolerance values Options a) Demand for a steel type with controlled sulphur content b) Specific tolerance values c) Non-standard lengths d) Specific controls e) Certifications and markings not included in this specification f) Colour coding of one end only AND SUPPLY CONDITIONS STANDARD SUPPLY CONDITIONS Quenched & tempered Steels Steels for mechanical applications Casehardening Steels Stocked steels ROUGH ROUGH ROUGH ROUGH ROUGH NORMALIZED NORMALIZED NORMALIZED NORMALIZED NORMALIZED OR NORMALIZED OR NORMALIZED OR NORMALIZED OR NORMALIZED OR A Option Some of the above mentioned steel grades can be supplied with a controlled sulphur content of 'd60.035%. In this case, the writing S will be added to the steel acronym (from page 8). 3

4 2. Steel grade The following tables contain data on the applications, chemical analysis and mechanical properties of the stocked steel types. The products are designed in accordance with the EN standard and fulfill all the requirements foreseen by the relevant national regulations. APPLICATION FIELD APPLICATION Steel for mechanical applications Steel for mechanical applications Steel for mechanical applications, with guaranteed toughness High-yield steel for mechanical applications Quenched and tempered steel type with high resistance to tensile stress and C 0,20% Quenched and tempered steel Quenched and tempered steel Resulphurized casehardening steel CHEMICAL ANALYSIS* % * All the steel types are completely killed. ** It is possible to add chemical elements such as Al, Ti, Nb or V for the nitrogen fixation as well as to obtain the mechanical properties required. MECHANICAL PROPERTIES: steels for mechanical structures SUPPLY CONDITIONS* TENSILE PROPERTIES Wall thickness mm IMPACT STRENGTH** U U N U N QT QT * U = rough (untreated) - N = normalized - QT = quenched and tempered ** The impact strength values indicated above are obtained by calculating the average value of three 10 mm wide specimens. We guarantee single values higher than 70% of the minimum value required. The certification includes information on the specimen dimensions and the values measured during the test, expressed in J. If the specimen is less than 10 mm wide, the 4

5 MECHANICAL PROPERTIES: quenched and tempered steels SUPPLY CONDITIONS* TENSILE PROPERTIES Wall thickness mm IMPACT STRENGTH** QT QT * U = rough (untreated) - N = normalized - QT = quenched and tempered ** The impact strength values indicated above are obtained by calculating the average value of three 10 mm wide specimens. We guarantee single values higher than 70% of the minimum value required. The certification includes information on the specimen dimensions and the values measured during the test, expressed in J. If the specimen is less than 10 mm wide, the minimum KV10 values needed are reduced to the new KVW value according to the following formula: KVW = KV10 x (W / 10) 3. Dimensional tolerances In accordance with the DIN1629 and EN standards. The table of the dimensional range contains all the possible dimensions which are not included in the regulation. B Option It is possible to agree on tolerance values not included in the table. Straightness: 1.5 e4 4. Lengths The products are supplied in commercial lengths. 5. Controls The product undergoes the following tests: - Cast analysis - Tensile strength test - Impact test (only for normalized or quenched & tempered products) - Electromagnetic test. - Visual and dimensional control. D Option Specific additional controls can be agreed at the moment of the order. C Option At the moment of the order, it is possible to ask for non-standard lengths. 6. Surfaces The surface of the supplied products is hot-finished. Service Centre The Service Centre can supply fixed length cuts with mm tolerance values. 7. Certification The supplied products have the 3.1 specific approval test certification in compliance with the EN standard. IMS S.p.A. guarantees the total traceability of its products. The casting number is written on each tube. C Option At the moment of the order, it is possible to ask for a 3.2 certification. Should a 3.2 certification be necessary, then the customer will have to inform the organisation or the person who is responsible for the inspection as soon as the order is sent. 5

6 9. Identification and marking In order to be identified, the mechanical tubes are marked along their entire length with the following information: Painted: - Manufacturer s trademark - MT - Steel grade - Manufacturing norm - Outside diameter x Wall thickness - S (Production process) - Casting HARDNESS JOMINY TEST ON STEEL 16MnCrS5 IMS DISTANCE (mm) Through dye stamping: - Manufacturer s trademark - MT - Steel grade - S (Production process) - Plant inspector JOMINY TEST ON STEEL 30CrMo4 IMS F Option It is possible to demand the colour coding of one end only. 9. Packaging For diameters above 200 mm: loose For diameters b2 200 mm: in bundles IMS S.p.A. provides technical assistance for custom-tailored applications and usages according to the product. Hardenability - Jominy Test The hardenability of casehardening as well as quenched & tempered steels is assessed by carrying out a Jominy Test: a steel sample is hardened in the standard way, then the HRC hardness values are measured at various distances from the hardened end. IMS S.p.A. is able to commercialize steel types with a limited hardness deviation from the values foreseen by the regulation. HARDNESS JOMINY TEST ON STEEL 42CrMo4 IMS DISTANCE (mm) DISTANCE (mm) 6

7 DIMENSIONAL RANGE WALL THICKNESS OUTSIDE DIAMETER The number in each case corresponds to the weight per metre (Kg/m) Standard range EN Tolerance values according to EN Outside diameter Wall thickness to be agreed Upon request, it is possible produce the following diameters: 21, ,8-52,5-55,6-61,2-68,1-74,5-81, ,3-98,4-102,4-142,9-157,1-165,1-172,3-184,2-187,3-196, , , , The minimum and maximum thicknesses available are to be checked. 7

8 TAM Plus Seamless steel tubes for mechanical applications, quality above the standard level thanks to: - machinability - limited tolerance values on diameter and thickness - straightness. Machinability Thanks to the lubricating quality of the tool-chip interface, the micro-inclusions of manganese sulphide into steel can delay the wear of the cutting edge and allow the chip crashing, thus making it easier to work the piece. Advantages Lower tool temperatures with the same cut, and the possibility to increase the cutting speed. Reduction of the cutting effort and less wear and tear, which leads to a longer tool life. Reduction of the built-up edge. Easily removable chip. Limited tolerance values on wall thickness Thanks to the Diescher cross rolling process and to the continuous investments in technology, Tenaris is able to guarantee limited tolerance values, measured on the total length of the tubes, as shown in the table on page 11. Advantages Absence of raw residues after mechanical working. Reduction of the tube weight, as a lower thickness is necessary to obtain the dimension of the finished piece through mechanical working. Straightness Thanks to the controls carried out on the process, it is possible to obtain a percentage of straightness equal to or lower than 1, which can be cumulated on the entire length of the tube. Advantages Better concentricity with consequent reduction of the chips which need to be removed. Fewer vibrations/oscillations inside the machine. Reduction of the machine standstills. Higher productivity. 8

9 10. Steel grade APPLICATION FIELD E355 S E470 S E420J2 S APPLICATION Highly workable steel for mechanical applications Highly workable steel for mechanical applications with high yield Highly workable steel for mechanical applications, with guaranteed toughness * S = Highly workable steel CHEMICAL ANALYSIS* % E355 S E470 S E420J2 S 0,020-0,035 0,020-0,035 0,020-0,035 * All the steel types are completely killed. It is possible to add chemical elements such as Al, Ti, Nb or V for the nitrogen fixation as well as to obtain the mechanical properties required. MECHANICAL PROPERTIES: steels for mechanical structures SUPPLY CONDITIONS* Wall thickness mm TENSILE PROPERTIES Wall thickness mm IMPACT STRENGTH** E355 S E470 S E420J2 S U U N * U = as rolled (untreated) - N = normalized It is possible to normalize the steel by rolling it in a specific temperature range, so as to develop in the material the same state that would be obtained through a normalizing process. The foreseen mechanical values also apply after normalization. ** The impact strength values indicated above are obtained by calculating the average value of three 10 mm wide specimens. Single values can be lower than the minimum value required, but higher than 70% of such value. The certification includes information on the specimen dimensions and the values measured during the test, expressed in J. If the specimen is less than 10 mm wide, the minimum KV10 values needed are reduced to the new KVW value according to the following formula: KVW = KV10 x (W / 10). It is not necessary to carry out a stress impact test if the nominal thickness is lower than 6 mm. 9

10 11. Dimensional tolerances They are indicated in the dimensional range table according to the values of outside diameter and the wall thickness. B Option It is possible to agree on tolerance values which are not indicated. Straightness: 1 e4 (cumulative). 12. Lengths The products are supplied in commercial lengths. B Option At the moment of the order, it is possible to ask for non-standard lengths. Service Centre The Service Centre can supply fixed length cuts with mm tolerance values. Cut obliquity: 1.5 mm 13. Controls The product undergoes the following tests: - Mechanical tests, in compliance with the regulation - Electromagnetic test according to the EN standard F2 Level - Visual and dimensional control. 16. Identification and marking In order to be identified, the mechanical tubes are marked on their total length with the following information: Painted: - Manufacturer s trademark - TAM a8 Plus - Steel grade - Manufacturing norm - Outside diameter x Wall thickness - S (Production process) - Casting Through dye stamping: - Manufacturer s trademark - TAM a8 Plus - Steel grade - S (Production process) - Plant inspector 17. Packaging In strapped bundles. IMS S.p.A. offers technical assistance for custom-tailored applications and usages of the product. D Option Specific additional controls can be agreed at the moment of the order. 14. Surfaces The surface of the supplied products is hot-finished as rolled. 15. Certification The supplied products have the 3.1 specific approval test certification in compliance with the EN standard. IMS S.p.A. guarantees the total traceability of its products. 10

11 DIMENSIONAL TOLERANCE WALL THICKNESS DIAMETER Tolerance values on thickness Tolerance values on the outside diameter DIAMETER WALL THICKNESS The technical staff of IMS S.p.A. is at your disposal to specify which starting dimension of the tube makes it possible to obtain the required finished measure after mechanical working. 11