Properties
The standard steel grade of RD400–RD800 piles is S355J2H. Grades X60 and X70, S440J2H and S550J2H are also possible.
Chemical composition, max
| Steel Grade |
C (%) |
Mn (%) |
P (%) |
S (%) |
CEV(%) |
| S355J2H |
0.22 |
1.60 |
0.030 |
0.030 |
0.39 |
| S440J2H |
0.16 |
1.60 |
0.020 |
0.018 |
0.39 |
| S550J2H |
0.12 |
1.90 |
0.020 |
0.015 |
0.43 |
| X60 |
0.19 |
1.75 1) |
0.030 |
0.030 |
0.43 |
| X70 |
0.19 |
2.00 1) |
0.030 |
0.030 |
0.43 |
1) Content of Mn can be increased when C content is decreased.
Mechanical properties
| Steel grade | fy min(MPa) | fu (MPa) | A5 min (%) | T (°C) | KV min (J) |
|---|
| S355J2H |
355 |
470-630 |
20 |
-40 |
27 |
| S440J2H |
440 |
490-630 |
17 |
-402) |
27 |
| S550J2H |
550 |
605-760 |
14 |
-202) |
27 |
| X603) |
415 |
≥520 |
18 |
0 |
27 |
| X703) |
485 |
≥570 |
19 |
0 |
27 |
2) Impact strength requirement must be agreed separately with material thicknesses over 12.5 mm.
3) According to API 5L.
Design tools
Steel pipe piles are dimensioned in accordance with valid European (CEN) norms and standards and/or national regulations and guidelines. The extensive size range and steel grade alternatives of Ruukki steel pipe piles support economical foundation design.
Design software and objects
To make both architectural and structural design work easier with accurate product information in 3D form, Ruukki offers a selection of free CAD / BIM-objects and tool sets developed as add-ons for professional designing software such as ArchiCAD and Tekla Structures to be downloaded from the Software Toolbox.
Download Ruukki pile component package for Tekla Structures 15.0 / 16.0 / 16.1
Order and delivery
The pile pipes are delivered equipped with load labels that indicate the manufacturer and dimension data as well as the steel grade of the RR piles. If these markings are not present, the pile pipe must not be used in RR piles.
A material certificate of the SFS-EN 10204, type 2.2, standard at minimum will be provided for the steel pipe material. Also a material certificate as defined in SFS-EN 10204 for type 3.1 is possible.
The technical terms of delivery for steel pipes manufactured by Ruukki are in accordance with the EN 10219-1 or DIN 17120 standards. The dimensions and tolerances are as defined in EN 10219-2.