Seamless Precision Steel Tubesfor Hydraulic and Pneumatic tubes, stator tubes or quenched and tempered tubes

2

Content

Tubes for hydraulic and pneumatic pistons

Tubes for hydraulic and pneumatic cylinders

Tubes for hydraulic and pneumatic pressure lines

Company profi l Page 3

Tubes for hydraulic and pneumatic cylinders and pistons Page 4

Tubes for hydraulic and pneumatic pressure lines Page 7

Quenched and tempered tubes Page 10

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Salzgitter Mannesmann PrecisionFollowing the takeover of Vallourec Précision Etirage (VPE), France, by the Salzgitter AG, the new European market leader of cold-drawn seamless and welded precision steel tubes has been founded under the name of Salzgitter Mannesmann

Precision GmbH. As a leading European manufacturer Salzgitter Mannesmann Precision offers a wide range of products and services with great scope for intelligent, tubing-related solutions.

*A Company of Salzgitter Mannesmann Stainless Tubes GmbH

Production of seamless and welded precision steel tubes in accordance to international standards e. g. EN 10305-1, EN 10305-2, EN 10305-3, EN 10305-4, EN 10216 and EN 10217,

ASTM A 179, A 192, A 209, A 210, A 213, A 556 Japan Industrial Standard, British Standards, Other standards on inquiry.

Welded precision steel tubes of special dimensional accuracy according to ASTM A513 (DIN EN 10305-2) Outside diameter: 0.781” - 4.718”Wall thicknesses: 0.0468” - 0.296”

Seamless precision steel tubes of special dimensional accuracy according to ASTM A519 (DIN EN 10305-1)Outside diameter: 0.0625” - 14.953” Wall thicknesses: 0.0156” - 0.984”

Outs

ide

diam

eter

, inc

h

Wall thickness, inch0.047 0.078 1/8 0.156 0.203 0.234 0.281 0.313 0.359 0.391 0.438 0.569 0.469 0.516 0.547 0 .594 5/8 0.672 0.703 0.781 0.859 0.9840

0.390

0.781

1.187

1.578

1.968

3.937

5.906

7.875

11.812

13.781

14.953

Salzgitter Mannesmann Precision GmbH

Salzgitter MannesmannPräzisrohr GmbH, Hamm

Hamm

Wickede

Brackwede

Holzhausen

Remscheid *

Salzgitter MannesmannRohr Sachsen GmbH, Zeithain

Zeithain

Salzgitter AG

Mannesmannröhren-Werke GmbH

Salzgitter MannesmannPrécision Etirage SAS, St. Florentin

Salzgitter MannesmannPrecisie B.V., Helmond

St. Florentin

Vitry

Rachecourt

Tonnerre

Helmond

Salzgitter MannesmannPrecisión S.A. de C.V., Guadalajara

Guadalajara

Company

DOM Tubes according to ASTM A513 (DIN EN 10305-2)Outside diameter: > 10” - 15”Wall thicknesses: 1/4” - 7/8”

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Cylinder tubes

The dimensions and allowances shown are valid for the +SR „SRA“ (stress releaved annealed) delivery condition, allowances and dimensions for other delivery conditions are available on request. Modifi ed steel grades are only available with tolerances as per type II.

Eccentricity 5.0 %Eccentricity 7.5 %Eccentricity 10.0 % on request

Inside diameter, Nominal size

For skiving and roller-burnishing, Nominal wall thickness/Tolerance

Inch mm 0.203 0.234 0.296 0.390 0.484 0.593 0.687 0.781 0.890 0.984> 0.984-1 1/8

1.57” 401.77” 451.97” 50

2.16” 55-0.0015/-0.0217

2.36” 602.48” 632.56” 65

2 3/4” 702.95” 753.15” 80

3.35” 85-0.0158/-0.0276

3.54” 903.74” 953.94” 1004.13” 1054.33” 110

4.53” 115-0.0197/-0.0354

-0.0315

4.72” 120 -0.0512

4.92” 125 -0.0197/-0.0354

5 1/8” 130

5.31” 135-0.0197/-0.0393

5.51” 140-0.0197/-0.0472

-0.0394

5.71” 1455.90” 1506.10” 155

6.30” 160-0.0197/-0.0393

-0.0393

6 1/2” 165 -0.05916.69” 1706.89” 1757.09” 1807.28” 1857.48” 1907.68” 195

7 7/8” 2008.07” 205 -0.04728.27” 210 -0.07488.46” 215

8.66” 220-0.0669/-0.0551

8.86” 2259.06” 230

9 1/4” 235

9.45” 240-0.0669/-0.0551

-0.0551

9.65” 245 -0.08279.84” 250

10.04” 25510.24” 26010.43” 265

10 5/8” 270 -0.0630

11.23” 280-0.0393/-0.1004

-0.0945

11.42” 29011.81” 300

12.20” 310-0.0393/-0.1063

-0.0630

12.60” 320 -0.102413.00” 330 -0.0630

13.39” 340-0.0393/-0.1102

-0.1102

13.78” 350

Table 1: Product range, dimensions and tolerances of seamless cylinder tubes Manufacturing range The piston seal requires a high quality surface which in the case of cylinder tubing is achieved by machining. The required machining allowances and tolerances vary according to the machining process employed (honing – typeI, skiving and roller-burnishing – type II). Table 1 shows the SMP manufacturing range for cylinder tubing.

Dimensions and tolerancesInside diameter and wall thicknessestolerances are shown in table 1. The outside diameter tolerances are shown in the Salzgitter Mannesmann Precision ”Product range – seamlessand welded, cold-drawn precision steel tubes”. Cylinder tubing is specially straightened to match subsequent machining requirements. The straightness measurement is carried out on 1 metre tube sections. The maximum permissible out-of-straightness is 0.001 · L. It is measured between the tube outside surface and a straight line (chord) which connects the tube ends. Higher requirements on tube straightness are subject to special agreement.

Steel gradesCylinder barrels for hydraulic systems are mainly made from grade E355 (St 52), P550MOD (St 52MOD), P460 (StE460), P650MOD (StE460MOD) and P700MOD (StE690MOD) steels. Yield strength vary tylically from 235 MPa (= 34 ksi) up to 800 MPa (= 116 ksi).

Delivery conditionsCylinder tubing is supplied in the +SR „SRA“ (stress releaved annealed) delivery condition. As a result of the stress relieving treatment after the fi nal cold forming step, residual stresses are reduced, forming within defi ned limits is made possible, and dimensional changes during machining are minimized. If +N (normailzed) or +C (cold drawn) is ordered, we supply tubes for cylinders.

Surface conditionThe outside surface in the „SRA“ (stress releaved annealed) delivery condition is in accordance with ASTM A519 (EN 10305-1). The outside surface of other delivery conditions must be agreed.

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Cylinder tubes

Conventional Cylinder Tubes

Modifi ed steel grades bring higher strengths with safer Charpy-V values and allow for a safe use of the cylinder! P550MOD, shows optimized burst behavior

Modifi ed steel grades bring higher strengths with safer Charpy-V values and allow for a safe use of the cylinder! P700MOD, shows optimized burst behavior

Worst Case:

• extremely low temperatures• high pressure/peaks• bad low temperature ductility

Possible Effect:

• multi-part failure of the cylinder

Cylinder Tubes, modifi ed

Advantages:

• reliable use of hydraulic cylinders at temperatures of -20 °C/ -4 °F• avoid multi-part failure• wall thickness reduction• weight reduction • increase of work load

P550MOD, shows optimized burst behavior P700MOD, shows optimized burst behavior

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1) The addition of micro-alloying elements is permissible at the manufacturer’s option.

2) Al/N ≥ 2; if nitrogen is bound by niobium, titanium or vanadium, then the defi nition of a minimum aluminium share is not required.

3) SWB = special heat treatment. Figures are maximum values, if not indicated otherwise.4) CEV = Carbon Equivalent

Table 2: Chemical composition

Table 3: Mechanical and technological properties, delivery condition +SR (BKS) 6)

5) A 1/1-ISO-V-notch test lengthways in material at the stated temperature (average of three samples,

whereby only one single value may fall short of the given average by a maximum of 30 %. The values for the given notch test sampling (KV) are valid for CV – full samples. The test cross-section from a full sample measures 10 mm x 8 mm.

For thinner wall thicknesses the notch test values for the relevant sample wall thickness are achieved. For wall thicknesses < 5 mm, the verifi cation of the fi neness of grain in the structure can take place in accordance with Euronorm 103 and/or the specifi cation of the grain refi ning elements in the chemical composition. The improved ductility in the

material concept for precision steel tubes for use in cylinder construction which has been modifi ed by Salzgitter Mannesmann Precision and Salzgitter Mannesmann Stainless Tubes achieves a clear safety gain if the construction component does fail. The calculation of the quantitative link between notch test values for transversal and longitudinal samples in the Charpy impact test means that the transversal samples can be replaced by longitudinal samples using the conversion factors which are produced. The substitution of the transversal sample by a longitudinal sample is practical when the geometry of the tube does not permit the production of a standard sample section.

6) The data is for minimum values.

7) Only by separated order with extra charge. Tensile tests at higher temperatures can be performed with tube strips specimen in the range from 5.5 – 7.5 mm wall thickness and with tubular specimen from 7.5 – 25 mm of average wall thickness. The manufacturing of specimen for pressure tests as well as the tests itselves requires a minimum wall thickness of 7.5 mm.

8) SWB = special heat treatment

Cylinder tubes

Steel grade1)

C Si Mn P S Al Cu Cr Ni Mo V Ti W N Nb Nb+Ti+V CEV4)

% % % % % % % % % % % % % % % %

E355 (St 52) ≤0,22 ≤0,55 ≤1,60 ≤0,025 ≤0,025 - - - - - - - - - - - 0,50P460 (StE460)2) ≤0,20 ≤0,60 1,00-1,70 ≤0,025 ≤0,030 ≥ 0,020 ≤0,70 ≤0,30 ≤0,80 ≤0,10 ≤0,20 ≤0,040 - ≤0,020 ≤0,05 ≤0,22 0,60E355 (St 52) [SWB]3) ≤0,22 ≤0,55 ≤1,60 ≤0,025 ≤0,025 ≥ 0,020 - - - - - - - - - ≤0,22 0,50P550MOD (St52MOD) ≤0,22 ≤0,55 ≤1,60 ≤0,025 ≤0,025 ≥ 0,020 - - - - - - - - - ≤0,22 0,50P650MOD (StE460MOD) ≤0,20 ≤0,60 1,00-1,70 ≤0,025 ≤0,025 ≥ 0,020 ≤0,30 ≤0,80 ≤0,70 ≤0,40 ≤0,15 ≤0,020 - - - - 0,60P700MOD (StE690MOD) ≤0,20 ≤0,60 1,40-1,90 ≤0,025 ≤0,025 ≤0,070 ≤0,40 ≤0,80 ≤0,80 ≤0,50 ≤0,15 - ≤0,80 - - - 0,60

Steel grade mean wall thickness Tensile strength Yield strength Elongation Impact energy5)

s Rm (RT) ksi Rp0,2(RT) ksi Rp0,2 ksiσd0,2

(RT)7)ksi A5 (RT) KV ft lb KV ft lb KV ft lb

(80°C/176°F)7)

inch MPa MPa MPa MPa % Joule

length -20 °C/-4 °F -20 °C/-4 °F -40 °C/-40 °F

length transverse length/tranverse“

E355 (St 52) ≤ s ≤ 0.984 570 82.667 520 75.416 - - 520 75.416 16 - - - - - -

0.984 ≤ s ≤ 1.122 540 78.316 500 72.515 - - - - 16 - - - - - -

P460 (StE 460) 0.197 ≤ s ≤ 0.984 700 101.521 660 95.720 - - - 15 - - - - - -

E355 (St 52) [SWB]8) 0.197 ≤ s ≤ 0.984 570 82.667 540 78.316 - - 520 75.416 16 27 - - - - -

0.984 ≤ s ≤ 0.984 540 78.316 500 72.515 - - - - 16 27 - - - - -

P550MOD (St52MOD) 2.165 ≤ s ≤ 0.709 620 89.919 550 79.767 550 79.767 550 79.767 18 100 73 80 59 27 20

0.708 < s ≤ 0.886 620 89.919 520 75.416 520 75.416 520 75.416 18 100 73 80 59 27 20

0.886 < s ≤ 0.984 560 81.217 500 72.515 500 72.515 500 72.515 17 80 59 60 44 27 20

P650MOD(StE460MOD) 0.197 ≤ s ≤ 0.787 700 101.521 650 94.270 650 94.270 650 94.270 18 100 73 80 59 27 20

0.787 < s ≤ 0.984 640 92.819 590 85.568 590 85.568 590 85.568 17 80 59 60 44 27 20

P700MOD(StE690MOD) 0.197 ≤ s ≤ 0.787 750 108.773 700 101.521 650 94.270 700 101.521 18 100 73 80 59 27 20

0.787 < s ≤ 0.984 680 98.620 640 92.819 590 85.568 640 92.819 17 80 59 60 44 27 20

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Tubes for pressure lines

Table 4: Product range, dimensions, permissible deviations and fl ow cross section

Standard dimensions in accordance with DIN 2445-2/Sept. 2000Other dimensions available on request

Outsidediameter

Tolerances Insidediameter

Tolerances Wallthickness

Flow cross section

inch inch inch inch inch sq inch0.156 +/- 0.003 0.094 +/- 0.006 0.031 0.0070.156 +/- 0.003 0.078 +/- 0.006 0.039 0.005

0.203 +/- 0.003 0.141 +/- 0.006 0.030 0.0150.203 +/- 0.003 1/8 +/- 0.006 0.039 0.011

0.234 +/- 0.003 0.156 +/- 0.005 0.039 0.0200.234 +/- 0.003 1/8 +/- 0.006 0.059 0.0110.234 +/- 0.003 0.078 +/- 0.006 0.079 0.005

0.313 +/- 0.003 0.234 +/- 0.004 0.039 0.0440.313 +/- 0.003 0.203 +/- 0.004 0.059 0.0300.313 +/- 0.003 0.156 +/- 0.006 0.079 0.0200.313 +/- 0.003 1/8 +/- 0.006 0.098 0.011

0.391 +/- 0.003 0.313 +/- 0.003 0.039 0.0780.391 +/- 0.003 0.281 +/- 0.005 0.059 0.0600.391 +/- 0.003 0.234 +/- 0.006 0.079 0.0440.391 +/- 0.003 0.203 +/- 0.006 0.098 0.030

0.469 +/- 0.003 0.391 +/- 0.003 0.039 0.1220.469 +/- 0.003 0.359 +/- 0.004 0.059 0.0990.469 +/- 0.003 0.313 +/- 0.005 0.079 0.0780.469 +/- 0.003 0.281 +/- 0.006 0.098 0.060

0.547 +/- 0.003 0.469 +/- 0.003 0.039 0.1750.547 +/- 0.003 0.438 +/- 0.003 0.059 0.1470.547 +/- 0.003 0.391 +/- 0.004 0.079 0.1220.547 +/- 0.003 0.203 +/- 0.005 0.098 0.099

0.594 +/- 0.003 0.516 +/- 0.003 0.039 0.2060.594 +/- 0.003 0.469 +/- 0.003 0.059 0.1750.594 +/- 0.003 0.438 +/- 0.004 0.079 0.1470.594 +/- 0.003 0.391 +/- 0.005 0.098 0.1220.594 +/- 0.003 0.203 +/- 0.006 0.118 0.099

5/8 +/- 0.003 0.547 +/- 0.003 0.039 0.2395/8 +/- 0.003 0.516 +/- 0.003 0.059 0.2065/8 +/- 0.003 0.469 +/- 0.006 0.079 0.1755/8 +/- 0.003 0.438 +/- 0.006 0.098 0.1475/8 +/- 0.003 0.391 +/- 0.006 0.118 0.1225/8 +/- 0.003 0.359 +/- 0.006 0.138 0.099

0.703 +/- 0.003 5/8 +/- 0.003 0.039 0.3120.703 +/- 0.003 0.594 +/- 0.003 0.059 0.2740.703 +/- 0.003 0.547 +/- 0.003 0.079 0.2390.703 +/- 0.003 0.516 +/- 0.006 0.098 0.2060.703 +/- 0.003 0.469 +/- 0.006 0.118 0.175

0.781 +/- 0.003 0.672 +/- 0.003 0.059 0.3520.781 +/- 0.003 5/8 +/- 0.003 0.079 0.3120.781 +/- 0.003 0.594 +/- 0.006 0.098 0.2740.781 +/- 0.003 0.547 +/- 0.006 0.118 0.2390.781 +/- 0.003 0.516 +/- 0.006 0.138 0.2060.781 +/- 0.003 0.469 +/- 0.006 0.157 0.1750.781 +/- 0.003 0.438 +/- 0.006 0.177 0.147

0.859 +/- 0.003 0.781 +/- 0.003 0.039 0.4870.859 +/- 0.003 3/4 +/- 0.003 0.059 0.4390.859 +/- 0.003 0.703 +/- 0.003 0.079 0.3940.859 +/- 0.003 0.703 +/- 0.003 0.098 0.3520.859 +/- 0.003 5/8 +/- 0.006 0.118 0.3120.859 +/- 0.003 0.594 +/- 0.006 0.138 0.2740.859 +/- 0.003 0.547 +/- 0.006 0.157 0.239

0.984 +/- 0.003 0.853 +/- 0.003 0.059 0.5890.984 +/- 0.003 0.828 +/- 0.003 0.079 0.5370.984 +/- 0.003 0.781 +/- 0.003 0.098 0.4820.984 +/- 0.003 3/4 +/- 0.006 0.118 0.4390.984 +/- 0.003 0.703 +/- 0.006 0.138 0.3940.984 +/- 0.003 0.703 +/- 0.006 0.157 0.352

Outsidediameter

Tolerances Insidediameter

Tolerances Wallthickness

Flow cross section

inch inch inch inch inch sq inch 0.984 +/- 0.003 5/8 +/- 0.006 0.177 0.312 0.984 +/- 0.003 0.547 +/- 0.006 0.217 0.239 0.984 +/- 0.003 0.516 +/- 0.006 0.236 0.206

1.109 +/- 0.003 0.984 +/- 0.003 0.059 0.7611.109 +/- 0.003 0.938 +/- 0.003 0.079 0.7011.109 +/- 0.003 0.906 +/- 0.003 0.098 0.6441.109 +/- 0.003 0.859 +/- 0.006 0.118 0.5891.109 +/- 0.003 0.828 +/- 0.006 0.138 0.5371.109 +/- 0.003 0.781 +/- 0.006 0.157 0.4821.109 +/- 0.003 0.703 +/- 0.006 0.197 0.394

1.188 +/- 0.003 1.031 +/- 0.003 0.079 0.8231.188 +/- 0.003 0.984 +/- 0.003 0.098 0.7611.188 +/- 0.003 0.938 +/- 0.006 0.118 0.7011.188 +/- 0.003 0.859 +/- 0.006 0.157 0.5891.188 +/- 0.003 0.781 +/- 0.006 0.197 0.4821.188 +/- 0.003 0.703 +/- 0.006 0.236 0.394

1 3/8 +/- 0.006 1.219 +/- 0.006 0.079 1.1701 3/8 +/- 0.006 1.188 +/- 0.006 0.098 1.0961 3/8 +/- 0.006 1.141 +/- 0.006 0.118 1.0241 3/8 +/- 0.006 1.109 +/- 0.006 0.138 0.9541 3/8 +/- 0.006 1.063 +/- 0.006 0.157 0.8881 3/8 +/- 0.006 0.984 +/- 0.006 0.197 0.7611 3/8 +/- 0.006 0.906 +/- 0.006 0.236 0.644

1 1/2 +/- 0.006 1.297 +/- 0.006 0.098 1.3261 1/2 +/- 0.006 1.266 +/- 0.006 0.118 1.2471 1/2 +/- 0.006 1.188 +/- 0.006 0.157 1.0961 1/2 +/- 0.006 1.109 +/- 0.006 0.197 0.9541 1/2 +/- 0.006 1.063 +/- 0.006 0.217 0.8881 1/2 +/- 0.006 1.031 +/- 0.006 0.236 0.8231 1/2 +/- 0.006 0.938 +/- 0.006 0.276 0.7011 1/2 +/- 0.006 0.859 +/- 0.006 0.315 0.5891 1/2 +/- 0.006 0.703 +/- 0.006 0.394 0.394

1.656 +/- 0.008 1 1/2 +/- 0.008 0.079 1.7581.656 +/- 0.008 1.422 +/- 0.008 0.118 1.5781.656 +/- 0.008 1.344 +/- 0.008 0.157 1.4071.656 +/- 0.008 1.266 +/- 0.008 0.197 1.2471.656 +/- 0.008 1.188 +/- 0.008 0.236 1.0961.656 +/- 0.008 1.031 +/- 0.008 0.315 0.823

1.969 +/- 0.008 1.656 +/- 0.008 0.157 2.1471.969 +/- 0.008 1.578 +/- 0.008 0.197 1.9481.969 +/- 0.008 1 1/2 +/- 0.008 0.236 1.7581.969 +/- 0.008 1.422 +/- 0.008 0.276 1.5781.969 +/- 0.008 1.344 +/- 0.008 0.315 1.4071.969 +/- 0.008 1.266 +/- 0.008 0.354 1.2471.969 +/- 0.008 1.188 +/- 0.008 0.394 1.0961.969 +/- 0.008 1.109 +/- 0.008 0.433 0.9541.969 +/- 0.008 0.938 +/- 0.008 0.512 0.701

2.172 +/- 0.010 1.844 +/- 0.010 0.157 2.6892.172 +/- 0.010 1.688 +/- 0.010 0.236 2.2512.172 +/- 0.010 1.531 +/- 0.010 0.315 1.8522.172 +/- 0.010 1 3/8 +/- 0.010 0.394 1.491

2.359 +/- 0.010 1.969 +/- 0.010 0.197 3.0432.359 +/- 0.010 1.734 +/- 0.010 0.315 2.3572.359 +/- 0.010 1.578 +/- 0.010 0.394 1.9482.359 +/- 0.010 1 3/8 +/- 0.010 0.492 1.491

2 3/4 +/- 0.012 2.359 +/- 0.012 0.197 4.3822 3/4 +/- 0.012 2 1/8 +/- 0.012 0.315 3.5502 3/4 +/- 0.012 1.969 +/- 0.012 0.394 3.0432 3/4 +/- 0.012 1.766 +/- 0.012 0.492 2.465

3.156 +/- 0.014 2.672 +/- 0.014 0.236 5.6293.156 +/- 0.014 2.516 +/- 0.014 0.315 4.9863.156 +/- 0.014 2.359 +/- 0.014 0.394 4.3823.156 +/- 0.014 2.172 +/- 0.014 0.492 3.682

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Tubes for pressure lines

Table 5: Corrosion Protection

Type of chromating/passivation Cr6 [µg/cm2] Salt spray resistance (SMP surface)

Requirement acc. to norm (rack/barrel)

Yellow Chromating 5-20 > 120 h 72 h/96 h

High Performance Passivation < 0,02 > 200 h 8 h/16 h

Type of passivation Zinkschichtdicke Salt spray resistance (SMP surface)

Requirement acc. to norm

High Performance Passivation 12-15 > 380 h 192 h

Comparison based on DIN EN ISO 9227 Salt spray testing, requirements according to DIN EN ISO 2081.

White layer on the zinc or zinc coated surfaces due to insuffi cient storing (e. g. damp environment, insuffi cient ventilation). This is no protection against (red) rust.

Red rust is caused by atmospheric corrosion and is a product of tube surface and oxygen in the air. Red rust has a brown to red color and a loose, porous appearance.

Resistance against white rust

Resistance against red rust

GeneralHPL tubes are seamless cold-drawn precision steel tubes predominantly for use as pressure lines in hydraulically or pneumatically operated equipment. In hydraulic systems the velocity and pressure of the fl ow medium are subject to variations. The resulting pressure surges are superimposed on the internal pressure. Accordingly, pulsating stresses are prevalent in pressure lines. When dimensioning the tubes for such lines, the actual stress profi le under service conditions must be carefully considered.

Dimensions and permissible deviationsThe selection of sizes shown in table 4 is in accordance with EN 10305 ”Steel tubes for precision applications – Technical delivery conditions-Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems” and DIN 2445 Sheet 2, ”Seamless steel tubes for dynamic loads; cold drawn tubes, nominal pressures 100 to 500 bar“ and also takes into account established dimensions in hydraulic and pneumatic engineering practice. When new construction projects are being considered we recommend using the standardized dimensions (DIN 2445) shown in the grey fi elds of the manufacturing range of the table 4.The supply of tubes in other dimensions is subject to special agreement.

9

Yellow Chromating High Performance Passivation

Cold workabilityThe fi nal heat treatment gives HPL tubing good cold workability. When bending is performed, the associated reduction in wall thickness on the outer bend and out-of-roundness on the inner bend must be taken into consideration. The corresponding reduction factors for the design of bends and oval cross sections are given in DIN 2413 Part 2.

WeldabilityThe tubes are weldable without preheating and post-weld heat in accordance with current procedures.

Corrosion protectionAll tubes are provided with corrosion protection:

HPL Tubes, black2 mm ≤ dia < 0.236”: internal and external surface lubricated dia ≥ 0.236”: internal and external surface phosphatized lubricated or only lubricated

HPL Tubes, galvanizedExternally galvanized tubes with a zinc coating of 8 to 12 μm and subsequently passivated or chromated, plus temporary corrosion protection (inhibitor containing mineral oil), resistance against white corrosion according to table 5.

Explanation of high performance passivating of HPL TubesSalzgitter Mannesmann Precision’s high performance passivating is a process which provides chrome VI-free coating with clearly improved resistance to white rust. High performance passivated tubes have the typical appearance of blue chromated tubes. Here Salzgitter Mannesmann Precision offers a product that completely satisfi es the demands for chrome VI-free coatings, in accordance with the directive 2000/53/EC of the EU on end-of-life vehicles which came into force in 2007. Other coating thicknesses and outside diameters > 42 mm are subject to enquiry.

Permissible deviations:• Outside diameter and inside diameter as shown in table 4.• Straightness in accordance with EN 10305-4 (DIN 2391-2).• If tubes are ordered according to outside diameter and wall

thickness, the eccentricity is 7.5 % at a maximum.• The tubes are supplied in exact lengths 20 ft in accordance with EN 10305-4 (DIN 2391-2); shorter lengths 13 ft mm are bundled

separately.

The values indicated above apply to straight tubing sections, shaping process reduces the corrosion resistance.

Steel gradesFor ”Seamless tubes of non-alloy steels with very high quality requirements” (St 37.4 in accordance with DIN 1630) applies fi ne-grain steel (RR) E235 in accordance with EN 10305-4. HPL tubing in E355 (St 52.4) steel grade in accordance with EN 10305-4 (DIN 1630) is available on request.

Technical delivery conditionsThe tubes are normalized +N (NBK) under controlled atmosphere in accordance with EN 10305-4.

Surface conditionsThe tube inside surface is free from productionrelated residues which could affect the service effi ciency of a pressure line. The tubes show a roughness of Ra 4 μm (EN 10305-4).

10

Quenched and Tempered tubes

Quenched and Tempered Production Line

Capacity: 6 t/h C-Steel

Max. temperature HS: 1.200 °C/2,192 °F

Max. temperature AS: 760 °C/1,400 °F

Quenching: Water shower - 3600l/min.

Dimension range: OD: 3.15 – 15.98 inch, Wall thickness: 0.157 – 1.377 inch C-Steel

Tube length: 14 – 52 ft

Products from C-Steel: Modifi ed engineering, fi ne grain steels, Q+T Steels

Drawing Process

Table 6

11

Quenched and Tempered tubes

Scheme QT – Line plant Remscheid

Special grade (Stator tubes)

Stator tubes are mainly quenched and temepered tubes made from steels shown in table 7 Due to the technically sophisticated Q+T Line installed in Remscheid SMP can produce a wide range of machanical values for downhole equipment such as stator tubes.

Overview Quenched and Tempered Steel gradesMaterial Rm ksi Rp 0,2 ksi Elongation

(MPa) (Mpa) %Grade 4140 Q+T 965 -1200 140 - 174 min.: 750 109 A5 min.: 11Grade 4140 Q+T 1000 -1173 145 - 170 min.: 930 135 2‘‘ min.: 13Grade 4140 Q+T min.: 1000 145 min.: 930 135 2‘‘ min.: 13Grade 4142 Q+T 966 -1173 140 - 170 min.: 759 110 4D min.: 1342CrMo4 Q+T 930 -1200 135 - 174 min.: 750 109 5D min.: 12Grade 4142 Q+T 896 130 758 110 14Grade 4140 M Q+T 965 140 896 130 14

Table 7

Salzgitter Mannesmann Precision GmbHWiesenstraße 36, 45473 Mülheim / Ruhr, Germanywww.smp-tubes.com

Salzgitter Mannesmann Präzisrohr GmbHWiesenstraße 3645473 Mülheim / RuhrPhone: +49 208-458-1507Fax: +49 208-458-1635E-Mail: industrie@smp-tubes.com

Internet: www.smp-tubes.com

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