Heavy-Duty Workshop and Crane Girder Steel Fabrication
Heavy industrial buildings require more than a standard portal-frame package. Smelting workshops, process plants and manufacturing facilities may use thick plates, heavy built-up columns, crane girders, complex end plates and components that must be segmented for factory handling and international transport. FSS provides fabrication-focused support from drawing review and detailing through manufacturing, inspection, surface treatment and export packaging.
Our role is to manufacture the agreed structural steel package from approved project information. Local structural approval, foundation design, crane-system supply and site erection remain with the responsible project parties unless separately included in writing.
Typical project applications
- Smelting and metallurgical workshops
- Heavy manufacturing and assembly plants
- Industrial buildings with overhead crane systems
- Process facilities using heavy built-up columns and girders
- Workshop reconstruction or capacity-upgrade projects
- Industrial structures requiring controlled thick-plate welding
Key fabrication challenges
Heavy loads must be translated into manufacturable components
Large column bases, stiffened crane girders and heavy beam-column interfaces can create concentrated welds, restricted access and handling constraints. Before fabrication, the released drawings and component geometry need to be checked against plate availability, workshop equipment, lifting capacity and transport segmentation.
Welding distortion can affect crane alignment
Crane girders and built-up members require controlled assembly and welding sequences. Excessive distortion or inconsistent connection geometry can create difficulties during local erection and crane-rail alignment. Fabrication controls should therefore be linked to the project's approved tolerances and inspection plan.
Inspection requirements must be defined before production
The applicable welding standard, weld categories, NDT methods, acceptance criteria and hold points should be confirmed in the ITP before fabrication starts. This prevents inspection assumptions from being introduced after components are complete.
Heavy components need a shipment strategy
Maximum component dimensions and weights affect workshop handling, inland transport, port operations, container or break-bulk selection and the local lifting plan. Shipment segmentation and connection interfaces should be coordinated early.
FSS fabrication solution
- Review the released drawing package, fabrication scope, component interfaces and revision status.
- Prepare or coordinate Tekla models and shop drawings when detailing is included in the order.
- Plan thick-plate cutting, built-up member assembly, welding sequence and component handling.
- Control connection end plates, stiffeners, bolt-hole locations and other erection-critical dimensions.
- Execute welding and inspection according to the approved project documents and ITP.
- Apply the specified surface treatment and record agreed inspection results.
- Mark, group and package components for export delivery and local erection sequencing.
Confirmed FSS supply boundary
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Included when specified in the order |
Normally retained by client / local parties |
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Fabrication-document review and agreed detailing |
Engineer of Record approval and local professional stamping |
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Heavy columns, beams, crane girders and connections |
Crane equipment, rails and mechanical/electrical systems unless listed |
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Welding, inspection and specified NDT |
Foundation and anchor design unless released in the approved package |
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Painting or other confirmed surface treatment |
Local permits and statutory approvals |
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Component marking, export packaging and agreed documents |
Site erection labor, equipment, safety and local compliance |
Quality-control focus
- Material certificates and traceability according to the approved document requirements
- WPS, welder qualification and welding consumables applicable to the project
- Fit-up, weld appearance and dimensional inspection
- UT, MT or other NDT only where specified in the approved ITP
- Control of built-up member straightness, end-plate geometry and bolt-hole positions
- Surface preparation, coating inspection and release for packing
Featured project - Johannesburg industrial smelting workshop
A smelting-workshop reconstruction project in Johannesburg required more than 5,000 tonnes of structural steel. The fabricated package included heavy columns and crane girders. Individual steel column components weighed up to 30 tonnes, while the crane girders had a maximum stated design load of 120 tonnes.
FSS supplied crane girders and the main structural steel fabrication, including welding, UT and MT inspection, surface treatment and export packaging. Welding was executed to AWS D1.1 for this project. The fabrication period was six months. Local erection was carried out by the client's contractor, and FSS provided remote technical support. The facility has been installed and placed into operation.
Project facts: South Africa / more than 5,000 t / up to 30 t per column component / 120 t crane-girder design load / six-month fabrication period / AWS D1.1 / UT and MT.
Information required for review
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Information |
Why it is needed |
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General arrangement and member drawings |
Confirm component geometry, interfaces and fabrication scope |
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Crane data and approved structural loads |
Review the crane-girder package; FSS does not infer crane loads |
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Material grades and plate requirements |
Plan sourcing, traceability and fabrication |
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Welding standard and ITP |
Confirm WPS, qualifications, NDT and acceptance criteria |
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Surface-treatment specification |
Plan preparation, coating or other required treatment |
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Maximum transport dimensions and weights |
Coordinate component segmentation and shipment method |
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Destination and delivery schedule |
Review export route, packaging and production sequence |
FAQ
Q: Can FSS supply the overhead crane equipment?
A: This page covers structural steel and crane-girder fabrication. Crane equipment, rails, electrification and commissioning are not included unless they are specifically listed in the commercial and technical scope.
Q: Can FSS design the crane girder?
A: FSS works from the approved project information and can support detailing or fabrication coordination within the agreed scope. The responsible structural engineer must confirm design loads, calculations and local approval requirements.
Q: Which NDT methods does FSS provide?
A: NDT is performed according to the approved ITP. The South Africa reference project included UT and MT. Methods and acceptance criteria for a new project must be confirmed before fabrication.
Q: Does FSS install the workshop overseas?
A: Local erection is normally performed by the client's contractor. FSS can provide agreed erection documents and remote technical support, but does not present itself as the local installation contractor.
Send Your Heavy Workshop Drawings for Fabrication Review
Email the current structural drawings, crane information, project specification, inspection requirements and destination to serena@fss-china.com. FSS will review the available information against the requested fabrication and export scope.