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The company PROMTUBE produces precision tubes with the following specifications:

CHEMICAL COMPOSITION OF STEEL

Steel grade E355+SR(St52.3 BK+S) Chemical elements content in %
Material number С
max
Si
max
Mn
max
P
max
S
max
1.0580 0.22 0.53 1.60 0.025 0.035

MECHANICAL PROPERTIES:

  • Interior surface roughness: Ra<=0,22;
  • Outer surface roughness: Ra<=4;
  • Minimum strength 600MPa;
  • Minimum yield strength 520 MPa;
  • Elongation А>=15%;
  • Maximum tube length 10000mm;
  • Straightness: partial deflection – 1mm per each meter of length, full scale deflection - 3,5 mm maximum for tube length < or = 6000 mm+0,5 mm per each further meter of tube > 6000 mm;
  • Eccentricity – up to 7,5%

TUBES ASSORTMENT

d internal tube diameter, mm D external tube diameter, mm Tube weight, kg/m L tube length, mm
50 60 6.78 up to 10000
50 65 10.63 up to 10000
50 70 14.79 up to 10000
55 65 7.39 up to 10000
55 70 11.55 up to 10000
60 70 8.22 up to 10000
60 72 9.97 up to 10000
60 75 12.7 up to 10000
60 80 17.5 up to 10000
60 90 27.74 up to 10000
63 73 8.38 up to 10000
63 75 10.2 up to 10000
63 78 13.03 up to 10000
63 83 17.99 up to 10000
70 80 9.48 up to 10000
70 82 11.5 up to 10000
70 85 14.6 up to 10000
70 90 20 up to 10000
70 100 31.23 up to 10000
80 90 10.48 up to 10000
80 95 16.18 up to 10000
80 100 22.18 up to 10000
80 110 35.12 up to 10000
80 121 50.81 up to 10000
100 110 12.95 up to 10000
100 115 19.87 up to 10000
100 120 27.11 up to 10000
100 125 34.68 up to 10000
100 130 42.52 up to 10000
100 135 50.36 up to 10000
100 140 59.16 up to 10000
110 125 21.72 up to 10000
110 130 29.58 up to 10000
110 140 46.22 up to 10000
115 125 14.8 up to 10000
115 130 22.66 up to 10000
115 140 39.3 up to 10000
120 135 23.57 up to 10000
120 140 32.04 up to 10000
120 150 49.91 up to 10000
125 135 16.02 up to 10000
125 140 29.49 up to 10000
125 145 33.27 up to 10000
125 146 34.85 up to 10000
125 150 42.36 up to 10000
125 155 51.76 up to 10000
130 150 34.51 up to 10000
130 160 53.61 up to 10000
140 160 36.97 up to 10000
140 165 46.99 up to 10000
140 170 57.31 up to 10000
140 180 78.87 up to 10000
145 165 38.2 up to 10000
145 165 38.2 up to 10000
145 170 48.53 up to 10000
150 170 39.44 up to 10000
150 180 61 up to 10000
160 170 20.33 up to 10000
160 180 41.9 up to 10000
160 185 53.18 up to 10000
160 190 64.7 up to 10000
160 200 88.73 up to 10000
180 200 46.83 up to 10000
180 205 59.31 up to 10000
180 210 72.1 up to 10000
180 220 98.59 up to 10000
200 210 25.26 up to 10000
200 220 51.76 up to 10000
200 225 65.47 up to 10000
200 230 79.49 up to 10000
200 273 212.88 up to 10000
200 245 123.39 up to 10000
220 245 71.63 up to 10000
220 250 86.88 up to 10000
220 273 161.01 up to 10000
250 280 97.98 up to 10000
250 300 169.46 up to 10000

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