One Supply Channel for More of the Building System

Promisteel supports steel structure fabricators, PEB manufacturers, EPC contractors, project procurement teams, and distributors with an integrated supply range covering primary structural steel, secondary framing, decking, roofing and wall materials, connection products, and selected fabrication services.

Instead of sourcing every material category from a different supplier, buyers can consolidate more of the steel package through one commercial and quality-control channel-reducing specification gaps, document mismatches, packing complexity, and coordination work across an international project.

The exact scope depends on your drawings, standards, quantities, destination, and required level of processing. Promisteel can support projects from raw structural steel procurement through selected processed and fabricated components, secondary framing, cladding materials, and related accessories.

See the broader Promisteel Structural Steel range and

auxiliary materials for PEB applications.

Real workshop views from Promisteel's published fabrication page.

Structural Steel for Main Frames

The primary frame carries the major structural loads of a steel building. Promisteel can coordinate structural plate and section supply around the grade, standard, dimensions, fabrication drawings, welding requirements, surface treatment, and inspection plan specified by the buyer.

Structural Plates and Raw Material

Heavy plate is the starting material for many welded H-beams, box columns, base plates, stiffeners, gussets, and custom structural components. The final grade must follow the approved structural design rather than a generic 'equivalent' assumption.

Rolled H-Beams and Custom Welded Sections

Standard rolled sections are efficient within mill ranges. Drawing-specific depths, flange/web combinations, long spans or crane-support frames may require built-up sections. See Rolled vs. Welded H-Beams in Steel Structures.

Galvanized Purlins and Steel Decking

C/Z Purlins and Secondary Framing

C- and Z-purlins are commonly formed from galvanized structural-quality steel, with section geometry, thickness, yield strength, coating, hole pattern, and length selected according to the structural design. Pre-punched or drawing-specific components should be confirmed against the approved hole layout before production.

Do not specify only "galvanized." State the steel grade and zinc coating mass. Review Promisteel's galvanized steel grades and zinc coatings guide.

Steel Decking for Floors and Mezzanines

Promisteel publishes galvanized decking options with zinc coating of 60–275 g/m² or galvalume with AZ coating of 70–150 g/m², thicknesses of 0.7–1.5 mm, effective cover widths of 600–1000 mm, customizable lengths typically from 2–12 m, and yield-strength options spanning 235–550 MPa. The project design governs the final selection. Review available decking profiles.

Real product views from Promisteel's decking range.

PPGI / PPGL Roofing and Wall Cladding

The building envelope must be matched to substrate, metallic coating, paint system, thickness, profile, environment, service conditions, and architectural requirements. Buyers can source prepainted coil for local profiling or discuss finished roofing and wall-sheet requirements.

For quotation, specify substrate, grade, thickness, width or finished profile, zinc or aluminum-zinc coating, top/back paint system, RAL color, surface finish, quantity and packing.

Fasteners, Welding Materials and Accessories

Structural bolts, nuts, washers, anchor-related hardware, self-drilling screws, welding consumables, trims, flashings, gutters and downpipes should be defined as part of the supply scope rather than assumed.

The bill of materials should identify every item as included, excluded, optional or buyer-supplied. Use the steel structure scope-of-supply checklist to reduce omissions.

Material and dimensional verification in a structural-steel workshop.

Quality Control Built Around Traceability

For downstream steel-structure customers, trust depends on evidence. Material must match the specification, fabricated dimensions must match approved drawings, welds must meet agreed acceptance criteria, and the shipment must remain traceable through packing and delivery.

Review the full steel fabrication quality-control framework.

Fewer Supplier Interfaces

Consolidate primary steel, secondary framing, decking, cladding and agreed accessories.

Specification Coordination

Review grades, dimensions, coatings and processing requirements against the RFQ.

Processing Flexibility

Combine standard supply with slitting, cutting, leveling and selected fabrication.

Quality Documentation

Coordinate MTCs, inspection records and traceability for the agreed scope.

Project Packing & Marking

Organize identification and packing around the approved list and site receiving needs.

Export Coordination

Support international packing, shipment planning and mixed-product consolidation where practical.

Send Your RFQ

Drawings/BOM, grades, standards, quantity, destination and delivery target.

Technical Review

Identify material categories, processing, boundaries and missing information.

Itemized Quotation

Define materials, processing, accessories, packing, Incoterm and exclusions.

Drawing Confirmation

Use the approved revision for custom components and fabrication.

Material & Production

Schedule raw material, processing and fabrication to the confirmed scope.

Quality Inspection

Complete agreed inspections, documents and third-party checkpoints.

Packing & Shipment

Mark, pack and document components for export and site receiving.

After-Delivery Support

Coordinate document clarification and agreed after-sales issues.

What to Send for an Accurate Quotation

The more complete your RFQ, the faster the technical and commercial review can move. For a steel structure or PEB inquiry, send:

• Project type and destination country / port
• Approved, IFC, shop or preliminary drawings
• Bill of materials / member list / quantity schedule
• Steel grades and governing standards
• Member dimensions, plate thicknesses and section sizes
• Welding code and joint requirements
• Required tolerances and connection details
• Surface preparation, paint, galvanizing or coating
• MTC, testing, NDT and inspection requirements
• Roof/wall profile, substrate, coating and color
• Fastener and accessory scope
• Delivery schedule and preferred Incoterm

Use Promisteel's complete RFQ guide for custom steel structure fabrication if you need a detailed procurement checklist.

What steel materials can Promisteel supply for pre-engineered buildings?

Depending on the project scope, Promisteel can support primary structural steel such as plate and H/I sections, custom welded sections, galvanized C/Z purlins, steel decking, PPGI/PPGL roofing and wall materials, fasteners, welding-related materials, and selected building accessories.

Can Promisteel supply both raw steel and fabricated structural components?

Yes, the supply model can include raw material and selected drawing-based processing or fabrication. The exact fabrication capability must be confirmed against your drawings, steel grade, dimensions, welding requirements, tolerances, NDT scope, quantity, and delivery schedule.

Can you supply a complete PEB material package?

Promisteel can consolidate multiple PEB material categories, including primary steel, secondary framing, decking, cladding and agreed accessories. A complete project scope should be reviewed line by line so included, excluded, optional and buyer-supplied items are clear.

What information is needed to quote a steel structure project?

Send drawings or a BOM, steel grades and standards, dimensions, quantities, welding and tolerance requirements, surface treatment, inspection/document requirements, destination, delivery schedule and preferred Incoterm. Roofing and cladding inquiries should also specify substrate, coating, paint system, profile and color.

How does Promisteel control structural steel quality?

Quality controls can include material verification and MTC traceability, dimensional inspection, process checks, weld inspection, agreed NDT, coating checks, final inspection, marking and packing verification. The exact inspection plan should be defined in the order or ITP.

Can third-party inspection be arranged?

Third-party inspection can be incorporated when required by the buyer or contract. The inspection agency, scope, hold/witness points, acceptance criteria and notification requirements should be agreed before the relevant production stage.

Can Promisteel supply galvanized steel decking?

Yes. Promisteel publishes decking options in galvanized and galvalume steel, with multiple profiles and customizable lengths. Final thickness, grade, coating and profile should follow the structural design.

Can you supply PPGI/PPGL for roofing and wall cladding?

Yes. Promisteel supplies prepainted galvanized and galvalume steel for construction applications. Buyers should specify substrate, grade, thickness, metallic coating, paint system, RAL color, profile or width, quantity and packing.

Do you provide C and Z purlins?

Promisteel supports galvanized steel and secondary-framing supply for PEB applications. For formed C/Z purlins, provide the section drawing, thickness, grade, coating, length, hole pattern and quantity so the exact scope can be confirmed.

How do I start a steel structure inquiry?

Send your project drawings, BOM or material list together with the project location, required standards, quantities, inspection requirements and delivery target. Promisteel can then review the scope and identify the information needed for a project quotation.