Precision Tube. Open Sections

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Marion Caldwell
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1 Cold drawn tube

2 Stainless Steel Tube Structural Hollow Section Precision Tube Cold Drawn Tube Profile Tube Open Sections Tubes and Profi les for Greenhouses Carpentry Tube

Index Gas and General Use Tube Equipment and Crash Barriers Introduction to Grupo Condesa 4 General product characteristics 6 11 What it consists of 6 Types of cold drawn tubes 6 Production process 8

3 Index Gas and General Use Tube Equipment and Crash Barriers Introduction to Grupo Condesa 4 General product characteristics 6 11 What it consists of 6 Types of cold drawn tubes 6 Production process 8 Technological characteristics 10 Chemical composition 10 Mechanical characteristics 11 Product standards and quality certifi cates 12 Product supply conditions and options 12 Supply conditions 12 Finishes 12 Cutting to size 12 Packaging and strapping 12 Product applications 13 Product range and tolerances 16 3

4 Grupo Condesa 4

features at the service of our customers. The parent company of Grupo Condesa was founded in 1954, based on the Spanish company Conducciones y Derivados S.A.

5 Grupo Condesa Evolution means there is no going back. Progress and a will to succeed urge us to move forward just a little bit more every day. For that reason, Grupo Condesa wishes to share its international growth and convey a new and unifi ed image as the leading company in this sector, with an increasing range of products with better features at the service of our customers. The parent company of Grupo Condesa was founded in 1954, based on the Spanish company Conducciones y Derivados S.A. Today, this is a solid and expanding Group, the result of a combination of several initiatives based on a number of clear objectives: To become a leading international company through excellence, quality, experience and knowhow, to resolve the problems of our customers and in this way, move forward and develop together. Collaboration and coordination between the different members of the Group generate synergies that allow us to tackle large markets with guarantees and with an excellent capacity to respond to our customers needs. Thanks to our large international network, we are always very close to our customers, attending to their needs and providing solutions at each moment in time. Twelve manufacturing companies throughout Europe. Our sales offi ces can be found in Spain, France, Portugal, Italy, Germany, United Kingdom, Sweden, Belgium, the Netherlands and Morocco. Agents in Gran Canaria (Spain), Ireland and Switzerland. The Group is engaged in the manufacture of carbon steel tubes and profi les and stainless steel tubes also offering high value added solutions and products for many of the leading brand names in the most important sectors: automotive, construction, furniture, public works, etc. 5

General product characteristics What it consists of The cold drawn tube is obtained from welded hollows from which the internal weld is removed and one or several of the following cycles are applied:

provide the tube the special qualities and characteristics that differentiate it from precision tubes, such as: Strict dimensional tolerances in inside and outside diameters Uniform oval and defl

6 General product characteristics What it consists of The cold drawn tube is obtained from welded hollows from which the internal weld is removed and one or several of the following cycles are applied: Heat treatment Straightening Pointing Surface heat treatment Cold drawing Final straightening Nondestructive (NDC) and dimensional control Cutting As a result of the above mentioned processes we provide the tube the special qualities and characteristics that differentiate it from precision tubes, such as: Strict dimensional tolerances in inside and outside diameters Uniform oval and defl ection Exigent roughness level and surface fi nish Specifi c mechanical characteristics Types of cold drawn tubes Cold drawn tube is a product used in highrequirement applications with regard both to dimensional tolerances and mechanical and surface characteristics. Depending on the requirements of the fi nal application, tubes are manufactured according to different fi nishing processes and one, two or more heat treatment and drawing cycles may be applied. Examples of cold drawn tube applications include tubes for steering columns, shock absorbers, heat exchangers, silent blocks, gas springs, telescopic tubes, hydraulic circuits, etc. 6

7 General product characteristics 7

General product characteristics Production process HEAT TREATMENT The previously manufactured hollow is subjected to a normalising treatment.

STRAIGHTENING AND POINTING Due to the structure of the steel and the longitudinal welded seam area, the heat treatment causes defl ection in the tube.

In order to perform subsequent drawing operations, it is necessary to make a point in the end of the tube to hold and transmit the stress of the deformation.

8 General product characteristics Production process HEAT TREATMENT The previously manufactured hollow is subjected to a normalising treatment. This treatment is made under a controlled, oxygenfree reducing atmosphere, that allows us to obtain perfectly clean and rustfree tubes. STRAIGHTENING AND POINTING Due to the structure of the steel and the longitudinal welded seam area, the heat treatment causes defl ection in the tube. This defl ection must be eliminated in a straightening installation, exceeding the yield point of the material. In order to perform subsequent drawing operations, it is necessary to make a point in the end of the tube to hold and transmit the stress of the deformation. CHEMICAL SURFACE TREATMENT After normalising, the tubes are subjected to a surface treatment that can be of two types: Pickling, washing, phosphating and soaping Reactive oil The aim of this surface treatment is to prepare the surface and to provide a lubricating effect that facilitates deformation by drawing. 8

9 General product characteristics COLD DRAWING The drawing process is made with an interior mandrel, through an external ring. The tube is held in two clamps, through which the mechanical force required to produce the cold deformation is transmitted, reducing the diameter and thickness of the initial tube to produce the fi nal tube. In this way, the process affects both diameters (outside and inside), the thickness and both surfaces. FINAL STRAIGHTENING The processes described above cause a great deal of defl ection in the pipe due to the stress to which it is subjected during the drawing process. This defl ection is eliminated by the straightening process, by exceeding the material s yield point. FINAL TUBE CONTROLS The fi nal manufacturing process consists of cutting the ends and the tube to the fi nal length required by the customer. In the same installation, all the tubes are subjected to the following controls: Crack detection, welding and surface defects through of nondestructive tests (Eddy Current) and/or ultrasonic tests Dimensional Moreover, the following fi nal controls are performed: Technological tests: Flatening at 0º and 90º and expansion Measurement of surface roughness Destructive tests: Tensile strength, yield point, elongation Hardness Microscopic inspections: Grain size, decarburisation, inclusions, etc. The steps described above represent the minimum manufacturing cycle of a cold drawn tube. On some occasions, complete or partial additional cycles must be performed, depending on the hollows, fi nal supply conditions, surface, dimensional and mechanical properties to be obtained. 9

10 General product characteristics Technological characteristics E 155 TYPE OF STEEL STATE OF SUPPLY +C (BK) +A (GBK) +N (NBK) H = CRUSHING 1.1e 0.1+ e / D TECHNOLOGICAL CHARACTERISTICS 20% MINIMUM ROLLING e 4 e 4 15% NON DESTRUCTIVE CONTROL Yes E 195 (St 342) E 235 (St 372) E 275 (St 442) E 355 (St 523) +C (BK) +A (GBK) +N (NBK) +C (BK) +A (GBK) +N (NBK) +C (BK) +A (GBK) +N (NBK) +C (BK) +A (GBK) +N (NBK) H = H = H = H = 1.09e 0.1+ e / D 1.09e 0.1+ e / D 1.07e 0.1+ e / D 1.07e 0.1+ e / D 20% 18% 15% 15% 15% 12% 10% 10% Yes Yes Yes Yes * For +A, it is recommended to apply the following ratio for the calculation: Re 0.5 Rm. For +C, it is recommended to apply the following ratio for the calculation: Re 0.8 Rm. For +LC, it is recommended to apply the following ratio for the calculation: Re 0.7 Rm. SUPPLY CONDITIONS Precision cold drawn tubes can be supplied in the following states: bright hard drawn, bright soft drawn, annealed and normalised. +C (BK) : Hard cold drawn. No heat treatment is made after the last cold drawing process. Therefore, the tubes have a small capacity for deformation. : Soft cold drawn. After the fi nal heat treatment the tubes are slightly colddrawn. These tubes can be colddeformed within specifi c limits. +A (GBK) : Annealed. After the last colddrawing operation, tubes are annealed in a controlled atmosphere. These tubes are appropriate for plastic deformation. Rolling, Crushing, etc. +N (NBK) : Normalising. After the last colddrawing operation, tubes are normalised (heat treatment at a temperature above the critical or upper transformation point). These tubes are appropriate for plastic deformation. Rolling, Crushing, etc. Chemical composition STEEL GRADE C Máx. Si Máx. Mn Máx. P Máx. S Máx. Al Máx. E (1) E 195 (St 342) (1) E 235 (St 372) (1) E 275 (St 442) (1) E 355 (St 523) (1) These steel grades can be killed only with aluminium. 10

11 General product characteristics Mechanical characteristics E 155 TYPE OF STEEL E 195 (St 342) E 235 (St 372) E 275 (St 442) E 355 (St 523) STATE OF SUPPLY +C (BK) +A (GBK) +N (NBK) +C (BK) +A (GBK) +N (NBK) +C (BK) +A (GBK) +N (NBK) +C (BK) +A (GBK) +N (NBK) +C (BK) +A (GBK) +N (NBK) MECHANICAL CHARACTERISTICS MINIMUM VALUES Rm (N / mm 2 ) *Re (N / mm 2 ) A % * For +A, it is recommended to apply the following ratio for the calculation: Re 0.5 Rm. * For +C, it is recommended to apply the following ratio for the calculation: Re 0.8 Rm. * For +LC, it is recommended to apply the following ratio for the calculation: Re 0.7 Rm. SUPPLY CONDITIONS Precision cold drawn tubes can be supplied in the following states: bright hard drawn, bright soft drawn, annealed and normalised. +C (BK) : Hard cold drawn. No heat treatment is made after the last cold drawing process. Therefore, the tubes have a small capacity for deformation. : Soft cold drawn. After the fi nal heat treatment the tubes are slightly colddrawn. These tubes can be colddeformed within specifi c limits. +A (GBK) : Annealed. After the last colddrawing operation, tubes are annealed in a controlled atmosphere. These tubes are appropriate for plastic deformation. Rolling, Crushing, etc. +N (NBK) : Normalising. After the last colddrawing operation, tubes are normalised (heat treatment at a temperature above the critical or upper transformation point). These tubes are appropriate for plastic deformation. Rolling, Crushing, etc. The values indicated in these tables correspond to the EN standard Part 2. The names equivalent to the DIN 2393 standard for steel grades and supply conditions are indicated in brackets. 11

Product standards and quality certifi cates Due to their fi nal applications, the requirements for these tubes are as follows: Strict dimensional tolerances Limited surface roughness Special

The main standards under which these tubes are applied are as follows: EN 103052 (replaces DIN 2393) ASTMA 513 ASTMA 178 ASTMA 214 ASTM A226 SAEJ 525b Our quality assurance and production systems are

12 Product standards and quality certifi cates Due to their fi nal applications, the requirements for these tubes are as follows: Strict dimensional tolerances Limited surface roughness Special mechanical characteristics Our current production facilities guarantees a full range of tolerance for inside diameter of 0.04 and Ra (roughness average), of up to 0.4 mm maximum. The main standards under which these tubes are applied are as follows: EN (replaces DIN 2393) ASTMA 513 ASTMA 178 ASTMA 214 ASTM A226 SAEJ 525b Our quality assurance and production systems are guaranteed by the TS16949, QS9000 and ADW certifi cates. Product supply conditions and options Supply conditions Our cold drawn tube manufacturing range is: Outside diameter from 14 to 80 mm Thickness from 0.8 to 5 mm The standard lenght is from 4,000 mm to 6,000 mm with a cutting tolerance of +0/500 mm. Finishes Brushed and debured Machining of inside and outside chanfers according to drawing Washing and drying Cutting to size Shorter lengths and tighter cutting tolerances are available on demand. Packaging and strapping The standard packaging is made in accordance with the state of supply:: Tube with +C (BK) or fi nish: hexagonal package Tube with +N (NBK) or +A (GBK) fi nish: square package with metal edges on corners Five strips are applied to a package of 6,000 mm. in length, cardboard or plastic protectors are placed between the tube and the strip. 12

Product applications The most typical applications

absorbers Stabiliser bars Gas springs Camshafts

machinery Hydraulic cylinders Telescopic tubes

13 Product applications The most typical applications are as follows: Automotive industry Shock absorbers Stabiliser bars Gas springs Camshafts Steering columns Silentblocks Airbags Hydraulic machinery Hydraulic cylinders Telescopic tubes Protective reservoir tubes Other uses Hydraulic circuits Bushings 13

14 Product applications 14

15 Product applications 15

16 T Product range and tolerances z ID y y OD z THICKNESS mm (T) OUTSIDE DIAMETER (OD) / TOLERANCES mm INSIDE DIAMETER (ID) / TOLERANCES ± 0.08 ± 0.15 ± 0.20 ± 0.25 ± 0.30 ± 0.35 ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± 0.40 T< 0.025D 0.025D <T< 0.05D T> 0.05D The tolerances indicated correspond to the EN Stricter tolerances can be manufactured on demand. 16

17 Product range and tolerances 17

20 Production Plants Commercial Offi ces Production Plants Commercial Offi ces AUSTRIA POLAND LONGTAIN Rue E. Vandervelde 1/ Bois d Haine, Belgium Tel Fax SRW Schwarzwälder Röhrenwerk GmbH Freudenständter Straße 58 D72213 Altensteig Walddorf, Germany Tel Fax LORRAINE TUBES 100, rue du Maréchal Foch F54720 Lexy, France Tel Fax LORRAINE TUBES, FRESNOY PLANT Vallée d Epinois F02230 Fresnoy le Grand, France Tel Tel ALESSIO TUBI Strada Statale 20, Km La Loggia (Torino), Italy Tel Fax BENELUX GERMANY FRANCE ITALY CONDESA DEUTSCHLAND 100, rue Maréchal Foch F Lexy, France Tel Fax CONDESA BENELUX Rue E. Vandervelde 1/ Bois d Haine, Belgium Tel Fax NORDIC COUNTRIES CONDESA DEUTSCHLAND Freudenständter Straße 58 D72213 Altensteig Walddorf, Germany Tel Fax CONDESA DEUTSCHLAND 100, rue du Maréchal Foch F54720 Lexy, France Tel Fax CONDESA DEUTSCHLAND Westenhellweg D44137 Dortmund, Germany Tel Fax CONDESA DEUTSCHLAND Fahrradstr Nürnberg, Germany Tel Fax CONDESA FRANCE 100, rue du Maréchal Foch F54720 Lexy, France Tel Fax CONDESA FRANCE 10 rue Roger Lapébie ZA Chanteloiseau Villenave D Ornon, France Tel Fax CONDESA FRANCE 51 rue Emile Decorps Villeurbane, France Tel Fax IRELAND BISCAY SHIPPING 10 Grants Row Dublin 2, Ireland Tel Fax CONDESA ITALIA Strada Statale 20, Km La Loggia (Torino), Italy Tel Fax CONDESA NORDIC Stora Åvägen ASKIM Sweden Tel Fax CONDESA FABRIL Carretera de Bergara por Urbina, Km Legutiano (Àlava), Spain Tel Fax Spain: Fax Europe: MIERES TUBOS Calle Naves de Sueros Mieres (Asturias), Spain Tel Fax PERFIL EN FRÍO Ctra. Guipúzcoa, Km. 7, Berrioplano (Navarra), Spain Tel Fax TUBOS DE CELRÀ Polígiono Industrial de Celrà C/ Ter s/n Celrá (Girona), Spain Tel Fax TUMESA Polígono Industrial SEPES C/ Isaac Newton s/n Sagunto (Valencia), Spain Tel Fax ZALAIN TRANSFORMADOS Barrio Zalain Zoko s/n Bera, Spain Tel Fax PORTUGAL SPAIN SWITZERLAND CONDESA POLAND Al. Kijowska 24/LU Kraków, Poland Tel Fax CONDESA PORTUGAL Rua Dr. João Corte Real, 583 Alto Saboga Ovar, Portugal Tel Fax CONDESA CATALUÑA Rambla del Celler, 133, 3º San Cugat del Vallès (Barcelona), Spain Tel Fax CONDESA CENTRO C/ Marie Curie, 17 Edifi cio Autocampo II, Of. B Rivas Vaciamadrid, Spain Tel Fax CONDESA LEVANTE Polígono Industrial SEPES C/ Isaac Newton s/n Sagunto (Valencia), Spain Tel Fax CONDESA NORTE C/ Albert Einstein Edifi cio 6 Ofi cina 206 Parque Tecnológico de Alava Miñano (Alava), Spain Tel Fax CONDESA NOROESTE Centro de Empresas La Guía Av. Jardín Botánico 4081º Of Gijón (Asturias), Spain Tel Fax CONDESA SUR Avda. de la Aeronáutica, s/n Edif. Helios, planta 4ª, Mód Sevilla, Spain Tel Fax CANARIAS C/ Juan XXIII, Las Palmas de Gran Canaria, Spain Tel Fax CONDESA FRANCE 100, rue du Maréchal Foch F54720 Lexy, France Tel Fax UNITED KINGDOM CONDESA UK Regency House Hagley Road Edgbaston Birmingham B16 8LA, United Kingdom Tel Fax OTHER EUROPEAN COUNTRIES CONDESA DEUTSCHLAND 100, rue Maréchal Foch F Lexy, France Tel Fax Ver AZK/

Gas and General Use Tube

Gas and General Use Tube Stainless Steel Tube Structural Hollow Section Precision Tube Cold Drawn Tube Profile Tube Open Sections Tubes and Profi les for Greenhouses Carpentry Tube Index Gas and General