PRECISION COLD DRAWN SEAMLESS STEEL TUBE
PRECISION COLD DRAWN SEAMLESS STEEL TUBE
PRECISION COLD DRAWN SEAMLESS STEEL TUBE
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6. Tubes for cylinders<br />
6.2 Tubes “ready to use” (HP)<br />
Dimensions<br />
Dimensions and weights are given in the Table 8.<br />
Tolerances<br />
• outside diameter according to standards DIN 2391-1, EN 10305-1<br />
• inside diameter – see Table 8 – ISO H8<br />
• wall thickness ± 7,5%<br />
• eccentricity is included in the tolerances of wall thickness<br />
Lengths<br />
• production 3–6 m<br />
• fixed – max. 6 m<br />
Straightness<br />
1 mm / m (1 : 1000 ) – measured on outside diameter<br />
Steel grade<br />
• St 52 according to satndard DIN 2391<br />
• E 355 according to standard EN 10305-1<br />
Delivery condition<br />
BKS (+SR) – cold finished / stess relieve annealed<br />
Outside surface<br />
Smooth after cold drawing (DIN 2391)<br />
Inside surface<br />
Roughness Ra
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