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On-site transport, unloading and storage
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Earth works, temporary access roads
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Excavation of the trench and backfilling
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Bending, preparation of pipe ends and cleaning
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Assembling and welding
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Inspection, testing and repair
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Coating of weld joints and fittings
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Lowering-In
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Hydrostatic testing and cleaning
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Erection of foundations
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Installation of instrumentation and electrical equipment
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Pre-commissioning and commissioning support