Welded components
for Jack-up rig legs
Offshore oil & gas fields are explored using jack-up rigs that must guarantee the highest level of operating safety. The steel making up the structural elements, particularly the legs, must offer exceptional mechanical characteristics, in particular very high yield strength in addition to high toughness at low temperatures and sufficient weldability.
Industeel produces the racks, chords and welded elements used to raise and lower jack-up platforms on their legs. These fabricated components, cut and welded, must support the weight of the platform during both travel to the site and subsequent operations. Industeel has been producing these leg components for more than 25 years and is recognized as one of the few major suppliers worldwide.
Applications
Welded components for jackup rigs.
- Racks with teeth that mesh with the lifting machines to raise and lower the platform
- Chords welded on both sides of the rack for reinforcement
Industeel also produces the rack chocks used to block the racks when the rig has reached the desired position.
Products
| Racks Length: 8 m up to 15.5 m Thick.: 160 mm up to 210 mm Width: 775 mm up to 1060 mm |
Welded elements Length: 8 m up to 24.5 m Weight: 11mT up to 60 mT |
Chords Length: 4 m up to 6.2 m Thick.: 80 mm up to 115 mm Width: 380 mm up to 680 mm |
Products / Racks
These pieces are flame-cut from very high quality quenched and tempered plates:
- Very high tensile properties (YS 690 MPA) and very high levels of toughness at low temperature (-60°C / -76°F) with improved weldability.
- Very tight tolerances comparable to machined parts, with in particular stringent guarantees on squareness.
Products / Chords
These pieces are hot-pressed from high yield strength plates (690 MPa), quenched and tempered, with high toughness values at low temperatures (- 60°C).
Thickness up to 127 mm with tight tolerances on width and height.
Products / Welded elements
Welded elements assembled from racks and chords with exceptional sizes.
Usual sizes:
Length : 12-13 m
Weight :15-20 mT
Tight tolerances on flatness and camber chord twist on finished welded elements.
The properties in the weld deposit metal and the heat affected zone are strictly homogeneous with the base metal.
Grades
SuperElso®: quenched and tempered steels with high yield strength (400 to 830MPa) and improved weldability
Racks: SuperElso® 690CR
Chords: SuperElso® 400 to 690
Rack chocks: SuperElso® 830/HY120
Services
Industeel can help in selecting materials and make recommendations on their use (welding, forming, cutting). The CRMC research center is available to carry out special studies on company products and their applications.
The technical know-how acquired by Industeel puts us in a position to optimize our products for each application. The result is a high-end range of steel products for the world market and the capacity to find innovative solutions to new problems you may encounter.
If you are not sure which steel is best suited to your needs, why not give us a call.
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