Industry procurement solution · Reviewed 10 August 2026
Steel for Offshore Platforms
Offshore steel selection connects waves, wind, fatigue, corrosion, splash-zone exposure, cathodic protection, welding, inspection, access and repair. Material certificates do not replace platform design, corrosion-management or structural-integrity requirements.
Answer first
There is no single metal specification for an entire project
Divide the project into systems, document each service environment and governing code, then select compatible materials, product standards, fabrication routes, protection systems and inspection plans.
Seawater, splash zone, marine atmosphere and cathodic-protection interfaces
Cyclic waves, wind, vibration, fatigue and impact loads
Fabrication, offshore transport, installation and repair constraints
System map
Material and product selection by project system
| System | Selection drivers and alternatives | Reviewed starting points |
|---|---|---|
| Jackets, tubulars and primary structure |
| Carbon steel plateCarbon steel pipe |
| Decks, modules and access steel |
| Carbon steel plateGalvanized coil |
| Process piping and corrosion interfaces |
| Stainless pipeCarbon steel pipe |
| Integrity records |
| Carbon steel plate |
Project control
Standards, certification and documents
- Environmental, load, fatigue and corrosion design basis
- Material, welding, coating, cathodic protection and inspection plan
- Fabrication, transport, lifting and installation requirements
- Certificates, NDE, coating and repair/turnover records
Fabrication and logistics
Package interfaces to control
- Fabrication drawings, welding, heat treatment, coating and repair procedures
- Inspection hold points, testing methods, acceptance criteria and document approval
- Identification through cutting and assembly, preservation, packing and consolidated shipping
- Destination rules, site storage, installation interfaces and delivery sequence
Risk register
Common procurement risks
Using atmospheric coating assumptions in splash-zone duty
Ignoring corrosion section loss and fatigue
Substituting tubular or plate without connection review
Omitting lifecycle inspection and repair documentation
Comparable offers
Structured RFQ checklist
Project location, governing code, design life, loads and service environment
Component, product form, grade, standard, dimensions and delivery condition
Fabrication, welding, NDE, coating and inspection requirements
Material certificates, marking, traceability, packing and delivery sequence
Required delivery date and site/approved-vendor constraints
Evidence
Sources and review
Project engineering documents and current governing standards supersede this general selection map.
Bureau of Safety and Environmental Enforcement · Offshore structural integrity research
ASTM International · Active standard; ordered edition controls
ASTM International · A53/A53M and A106/A106M scope; ordered edition controls
Project sourcing from China
Build a traceable Offshore platforms supply package
Share the design basis, system list, specifications, quantities, inspection plan, destination and delivery schedule.