Oil Refinery Modular Steel Structure Assembly

Modular construction allows a refinery or chemical project to move a larger share of structural work from the jobsite into a controlled fabrication environment. Dunbon supplies refinery steel structure and modular steel assembly packages based on project drawings, defined interfaces and the selected transport method. Typical scope can include module frames, equipment-support steel, access levels, bracing, secondary members and connection details.

A successful oil and gas module is more than a group of welded beams. The frame must be stable during fabrication, lifting, transportation and final installation. Dunbon therefore plans the fabrication sequence together with module split lines, lifting considerations, temporary supports, connection accessibility and match-marking. All final design responsibilities and values are agreed in the project documents.

Module Planning and Interface Management

At the start of a process plant module package, approved drawings are reviewed for equipment loads, pipe and cable routes, operating platforms, stair interfaces and site tie-in points. The model is divided into production and shipping blocks that suit the workshop, lifting equipment and route limitations. Connection faces and reference datums are identified early because accumulated dimensional errors can affect several disciplines at once.

Shop drawings provide member marks, weld information, bolt arrangements and assembly relationships. When a critical interface is difficult to verify by measurement alone, trial assembly can be included in the inspection plan. This is particularly useful for multi-level refinery steel structure frames with closely coordinated equipment or piping connections.

Controlled Workshop Execution

• Incoming material verification and documented identification.

• Precision cutting, drilling and preparation of built-up members.

• Sequenced fit-up and welding to manage distortion.

• Dimensional inspection of module width, height, diagonals and tie-in points.

• Specified non-destructive testing and surface protection.

• Logical packing and marking for rapid reconstruction at site.

Documented Refinery Project References

Dunbon's historical portfolio includes module assembly work for the Kuwait KIPIC Al-Zour new refinery project, with an identified scope of about 700 tons. It also includes approximately 2,500 tons of steel truss work for the Sinochem Quanzhou refining and ethylene expansion project. These references show practical exposure to large process facilities, international logistics and the coordination demanded by refinery and petrochemical construction.

The quantities above refer to specific completed project records. A new oil and gas module is priced and planned only after its steel grades, module dimensions, inspection level, coating system, delivery point and schedule are confirmed.

Delivery Built Around the Erection Plan

For export shipment, Dunbon can prepare packing lists, member identification and assembly references in the form required by the contract. Transport frames, loose parts and connection materials can be separated and labelled by module or erection zone. The objective is to deliver an industrial steel fabrication package that can be received, checked and installed in a predictable sequence.

This modular steel assembly service is applicable to oil refineries, gas-processing units, chemical plants, energy facilities and other complex process projects. Provide the general arrangement, module split strategy, design criteria, shipping restrictions and inspection requirements so the team can evaluate a suitable fabrication and preassembly route.