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Pipes: Seamless Pipes

  • Seamless Pipe

Seamless OSNA® - 10 CuNi 90 / 10 to EEMUA Publication N0. 144: Section 1.

  • Outside Diameter (OD)

Tube sizes 1/2" / 16 mm to 4"/108 mm conform to BS 2871: Part 2: Table 3
and EEMUA Publication No. 144: Section 1.

  • Inside Diameter (ID)

Tube sizes 6" / 159 mm and up, conform to EEMUA Publication No. 144: Section 1.

  • Wall Thickness (T)

Wall thicknesses conform to EEMUA offshore requirements for 16 and 20
bar systems. In addition the wall thicknesses for a 14 bar system are also indicated for pipes only.

  • Condition

'O' annealed properties to BS 2871: Part 2 and EEMUA Publication.



  • Seamless Pipes


Size Specified Wall Theoretical
  Nominal Spezified Thickness (mm) T Weight/Metre (kg)
(in) (mm) 14 bar 16 bar 20 bar 14 bar 16 bar 20 bar
1/2 16.00 1.0 2.0 2.0 0.42 0.78 0.78
3/4 25.00 1.5 2.0 2.0 0.99 1.29 1.29
1 30.00 1.5 2.5 2.5 1.20 1.93 1.93
1 1/4 38.00 1.5 2.5 2.5 1.55 2.49 2.49
1 1/2 44.50 1.5 2.5 2.5 1.81 2.94 2.94
2 57.00 1.5 2.5 2.5 2.33 3.82 3.82
2 1/2 76.10 2.0 2.5 2.5 4.15 5.15 5.15
3 88.90 2.5 2.5 2.5 6.05 6.05 6.05
4 108.00 2.5 3.0 3.0 7.40 8.82 8.82
6 159.00 2.5 3.0 3.5 11.00 13.10 15.24
8 219.10 3.5 4.0 4.5 21.10 24.10 27.04
10 267.00 4.0 4.5 5.5 29.50 33.10 40.27
12 323.90 5.0 5.5 7.0* 43.50 49.05 62.10
14 368.00 5.5 6.5 8.0* 56.20 65.80 80.64
16 419.00 6.0 7.0* 77.30 80.75
*Pipes are available seamless or seam-welded.

KME maintains an extensive stock of seamless / seam-welded pipes and fittings of all the standard ODs and wall thicknesses, ensuring fast delivery even where large quantities are required.


  • Stock Sizes of OSNA®-10 Pipes


O.D. wall thickness
(mm) (mm)
8.00 1.00
10.00 1.00
12.00 1.00
16.00 1.00 1.50 2.00
20.00 1.00 1.50
25.00 1.50 2.00
30.00 1.50 2.00 2.50
38.00 1.50 2.00 2.50
44.50 1.50 2.00 2.50
57.00 1.50 2.00 2.50
76.10 (76.00) 2.00 2.50
88.90 (89.00) 2.00 2.50
108.00 2.50 3.00
133.00 2.50 3.00
159.00 2.50 3.00 3.50
194.00 3.00
219.10 (219.00) 3.00 3.50 4.00 4.50
267.00 3.00 4.00 4.50 5.50
323.90 (324.00) 4.00 5.00 5.50 7.00
368.00 4.00 5.50 6.50 8.00
419.00 4.00 6.00 7.00 9.00
457.20 4.50 8.00
508.00 5.00 8.50
610.00 5.00 10.50
711.00 6.00
813.00 6.00



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