A steel structure building uses steel columns, beams, trusses, bracing and connection systems as its main load-bearing framework. Most components are fabricated before shipment and connected on site by engineered bolts or specified field welding.

Compared with conventional site-built systems, prefabricated steel structures can support large clear spans, organized factory production, phased expansion and flexible wall or roof configurations. Actual cost and construction efficiency depend on the project design, local labor, foundations, logistics and installation conditions.

The supply package may be configured as:

Fabricated primary and secondary steel only

Structural frame with bolts and connection accessories

Complete building-envelope package

Steel frame with roof and wall cladding

Steel frame with insulation, doors, windows and ventilation accessories

Project-specific package with crane beams, mezzanines or equipment platforms

Design responsibility, civil works, foundations, erection and local approvals must be clearly defined in the final contract.

Steel Structure Warehouses

Portal-frame and multi-span warehouse systems can be configured for logistics, material storage, distribution centers and industrial inventory. Selection should consider clear height, rack layout, loading doors, dock positions, future expansion and fire compartmentation.

Related Product: Steel Structure Warehouse Buildings

Steel Structure Workshops

Workshop buildings may require crane beams, equipment foundations, ventilation, daylight panels, large access doors and reinforced zones for production machinery. Crane capacity, wheel loads and equipment locations must be provided before structural design.

Related Product: Steel Structure Workshops for Manufacturing Plants

Steel Structure Hangars

Hangars normally require wide, column-free openings and large door systems. Long-span trusses or engineered portal frames may be selected according to aircraft size, door clearance, roof loads and local wind conditions.

Related Product: Prefabricated Steel Hangar Buildings

Industrial Steel Buildings

Industrial buildings can combine production areas, warehouses, utility rooms, maintenance zones and office sections. Equipment loads, pipe supports, cable routes, ventilation openings and corrosion exposure should be coordinated during the drawing stage.

Related Product: Industrial Steel Buildings and Plant Structures

Agricultural Steel Buildings

Steel buildings can be configured for machinery storage, grain handling, livestock facilities and agricultural warehouses. Ventilation, condensation, ammonia exposure, washable surfaces and local snow or wind loads require special attention.

Related Product: Agricultural Steel Structure Buildings

Multi-Storey Steel Structures

Multi-storey steel frames may be used for offices, commercial buildings, production facilities and mixed-use industrial projects. Floor vibration, lateral stability, fire protection, stair cores and composite floor systems must be evaluated.

Related Product: Multi-Storey Steel Frame Buildings

Steel Mezzanines and Platforms

Mezzanines and equipment platforms add usable floor area inside an existing or new building. Design inputs should include storage loads, equipment loads, concentrated loads, floor vibration, access stairs, handrails and fire-escape requirements.

Related Product: Industrial Steel Mezzanines and Platforms

Commercial and Logistics Buildings

Showrooms, service centers and logistics facilities may combine clear-span steel frames with insulated façades, glazed sections, office areas and loading systems. Architectural appearance should be coordinated with structural and thermal requirements.

Structural System	Suitable Projects	Main Advantages	Important Selection Limits
Portal frame	Warehouses, workshops, agricultural buildings	Efficient for regular single-storey layouts and clear spans	Crane loads, very large openings and irregular geometry require additional engineering
Steel truss	Hangars, wide-span roofs, heavy roof systems	Can accommodate long spans and roof service zones	More members, connections and weld inspection may be required
Braced steel frame	Industrial and multi-storey buildings	Efficient lateral-load resistance	Bracing positions may affect doors, windows and production layouts
Moment-resisting frame	Buildings requiring open façades or fewer braces	Greater layout flexibility	Connections and member sizes may be more complex
Mezzanine or platform	Storage floors and equipment support	Adds usable area within a building	Floor vibration and concentrated loads must be defined
Space frame	Exhibition halls and wide-roof projects	Suitable for large multidirectional roof systems	Higher connection, fabrication and installation complexity

No structural system should be selected solely from span or floor area. Building use, loads, serviceability, erection method and local code must be considered together.

All specifications are confirmed from approved drawings and the final purchase contract.

Item	Project Options
Structural system	Portal frame, truss frame, braced frame, moment frame, multi-storey frame, platform
Primary members	Hot-rolled or welded H sections, box sections, columns, rafters, trusses
Secondary members	C/Z purlins, wall girts, eave struts, bracing, tie rods
Structural steel grades	ASTM A36, ASTM A572 Grade 50, EN S235/S275/S355, Q235B, Q355B or drawing-specific grades
Hollow sections	ASTM A500, EN 10210, EN 10219 or project-specified material
Connections	High-strength bolts, ordinary bolts, anchor bolts, gusset plates and welded connections
Roof and wall systems	Profiled steel sheet, insulated sandwich panel or project-specified envelope
Insulation cores	Rock wool, EPS, PUR or PIR, subject to local fire and thermal requirements
Surface protection	Blast-cleaned and painted, hot-dip galvanized or duplex coating system
Fire protection	Intumescent coating, fireproof board or other approved system when required
Openings and accessories	Doors, windows, louvers, skylights, ventilators, gutters and downpipes
Optional systems	Crane beams, mezzanine floors, walkways, stairs, handrails and equipment platforms
Documentation	Material certificates, inspection records, packing list and project-specific QA documents
Packing	Piece-marked, bundled and protected for container or breakbulk shipment

Please provide the following information whenever available:

Project country, city and site location

Required design code and edition

Building length, width and eave height

Clear-span or internal-column requirements

Bay spacing and roof slope

Building use and occupancy

Design wind speed and exposure category

Ground snow load or roof snow load

Seismic parameters

Roof, floor and maintenance live loads

Crane capacity, span, class and wheel loads

Equipment, pipe rack or suspended service loads

Roof and wall cladding requirements

Insulation, condensation and ventilation requirements

Fire-resistance requirements

Corrosion environment and coating expectations

Door, window and service-opening locations

Destination port and site-access restrictions

If some load information is unavailable, send the project location and preliminary architectural layout for an initial scope review. Final design values still require confirmation by the responsible project engineer.

The following grades are common project options, but they are not automatic equivalents.

Grade	Standard Family	Selection Position
ASTM A36	ASTM carbon structural steel	Common structural shapes, plates and general building components
ASTM A572 Grade 50	ASTM high-strength low-alloy steel	Higher-yield structural components where permitted by the design
S235JR / S275JR	EN 10025-2	General European structural steel projects
S355JR / J0 / J2	EN 10025-2	Higher-strength projects with impact-toughness conditions selected by temperature and design
Q235B	GB/T 700	General structural members designed to applicable GB requirements
Q355B	GB/T 1591	Higher-strength structural members for project-specific designs

Grades must not be substituted solely because they have similar nominal yield strengths. The engineer should also review:

Thickness-dependent mechanical properties

Chemical composition and weldability

Impact-test temperature

Section and plate availability

Through-thickness properties where lamellar tearing is a concern

Bolting and welding compatibility

Destination-code acceptance

Material certification and traceability requirements

The governing code family and edition must be confirmed in the contract.

Market or Requirement	Common Reference Framework
United States and international projects using US practice	AISC 360 for structural steel design, ASCE/SEI 7 for project loads and AWS D1.1/D1.1M for structural welding
European projects	EN 1990, EN 1991 and EN 1993 with the applicable National Annex; EN 1090-2 for execution requirements
Australia and New Zealand	AS/NZS 1170, AS 4100 and AS/NZS 5131 as applicable
GB-based projects	GB 50009, GB 50011, GB 50017 and related fabrication standards
Welding quality system	AWS D1.1/D1.1M or the specified ISO 3834 quality level
Weld inspection	Project ITP and applicable VT, MT, PT, UT or RT standards
Painted corrosion protection	ISO 12944 series or project coating specification
Hot-dip galvanizing	ISO 1461 or the contract-specified galvanizing standard
Inspection documentation	EN 10204 3.1 documents when ordered and applicable

AISC 360 covers design and construction requirements for structural steel buildings, while ASCE/SEI 7 establishes project-load criteria. Eurocode 3 covers steel-structure resistance, serviceability, durability and fire design. Welding qualification and inspection may be specified under AWS D1.1/D1.1M. Corrosion and galvanizing requirements can be based on the ISO 12944 and ISO 1461 frameworks.

The coating system should be selected from the actual service environment—not from color or paint thickness alone.

Protection System	Typical Selection Situation	Procurement Considerations
Shop primer or standard paint system	Indoor or controlled environments	Confirm surface preparation, primer compatibility and required finishing coats
Multi-coat protective paint	Outdoor industrial or corrosive environments	Specify ISO 12944 corrosivity category, durability target, surface preparation and total system
Hot-dip galvanizing	Exposed secondary steel and suitable fabricated members	Member size, venting, drainage, distortion and galvanizing-bath limits must be reviewed
Duplex system	Marine, coastal or severe industrial exposure	Combines galvanizing and an additional compatible coating system
Fire-protective system	Buildings with a specified fire-resistance period	Must be treated separately from corrosion protection and supported by the required system documentation

For painted structures, inspection may include surface-cleanliness checks, environmental-condition records, dry-film-thickness measurements and visual examination. Requirements must be defined in the inspection and test plan.

Roof, Wall and Insulation Selection

Single-Skin Profiled Steel Sheet

Suitable for unconditioned warehouses, sheds and selected industrial buildings where thermal performance is not the main requirement. Condensation control may still be necessary.

Insulated Sandwich Panels

Available with project-selected insulation cores. Thermal conductivity, fire classification, panel thickness, joint design and facing material should be confirmed rather than selecting only by panel thickness.

Rock Wool Panels

Often considered where acoustic performance or non-combustible insulation is required. The complete panel assembly and local fire classification must be verified.

PUR or PIR Panels

Can provide higher thermal efficiency at a lower thickness than some alternative cores. Fire-performance requirements and local acceptance must be reviewed.

EPS Panels

May suit cost-sensitive thermal-envelope applications, but fire limitations and local building-code restrictions require careful confirmation.

No insulation product should be described as “fireproof” unless the complete tested assembly supports that claim.

 

1. Project Requirement Review

Building dimensions, loads, destination code, supply boundary, architectural requirements and delivery conditions are reviewed.

2. Preliminary Configuration

The structural system, material family, cladding option, coating approach and quotation exclusions are defined.

3. Engineering and Drawing Confirmation

Structural calculations, connection design, shop drawings, anchor-bolt layouts and erection drawings are prepared when included in the contracted scope. Client approval and destination-specific engineering review are completed before production.

4. Material Preparation

Steel plates, sections and secondary members are identified according to the bill of materials and traceability requirements.

5. Fabrication

Project-specific operations may include cutting, drilling, beveling, assembly, welding, straightening and trial fitting.

6. Surface Protection

Members are blast-cleaned, painted, galvanized or otherwise protected according to the approved coating specification.

7. Inspection and Documentation

Dimensions, welds, coatings, quantity, piece marks and packing are checked against the drawings and inspection plan.

8. Packing and Shipment

Components are grouped by erection sequence where practical, marked to match drawings and prepared for container or breakbulk transport.

Inspection requirements should be established before production.

Control Stage	Possible Verification
Incoming materials	Grade, dimensions, heat number and material certificate review
Cutting and drilling	Length, hole position, plate geometry and edge condition
Welding	WPS/PQR review, welder qualification, visual inspection and specified NDT
Member geometry	Straightness, camber, overall dimensions and connection locations
Surface preparation	Cleanliness, profile and environmental conditions where specified
Coating	System identification, coat sequence, dry-film thickness and appearance
Bolts and accessories	Grade, quantity, dimensions and batch documents
Pre-shipment	Piece marks, quantity, packing list, visible condition and loading plan

Project-specific documents may include:

Material test certificates

Bill of materials

Approved shop drawings

Welding procedure documents

Welder qualification records

Dimensional inspection reports

NDT reports

Coating inspection reports

Bolt certificates

Packing list and piece-mark schedule

Third-party inspection release note when arranged

The scope and format of these documents must be confirmed in the purchase order.

Application	Important Procurement Requirements
Logistics warehouse	Clear height, rack layout, loading bays, dock doors and expansion plan
Manufacturing workshop	Crane loads, equipment foundations, ventilation and service openings
Aircraft or vehicle hangar	Clear opening, door dimensions, long-span system and wind effects
Agricultural building	Ventilation, condensation, ammonia exposure and washable surfaces
Cold storage facility	Insulation continuity, vapor control, airtightness and hygienic detailing
Industrial plant	Equipment loads, pipe supports, access platforms and corrosion exposure
Commercial building	Façade appearance, fire design, floor systems and occupant comfort
Mining or energy facility	Heavy loads, remote logistics, abrasive exposure and maintenance access

Steel structure prices are normally calculated from the approved configuration and steel weight rather than floor area alone. Major price factors include:

Building length, width, height and roof geometry

Required clear span and bay spacing

Governing structural code

Wind, snow, seismic and live loads

Steel grade and calculated member weight

Crane beams, mezzanines and equipment loads

Connection complexity

Roof and wall cladding

Insulation and fire-performance requirements

Paint, galvanizing or duplex protection

Doors, windows, skylights and ventilation systems

Inspection and documentation requirements

Component length and shipping method

Destination port and project schedule

For an accurate quotation, submit drawings or a completed project data sheet rather than requesting only a price per square meter.

Steel members are normally marked to correspond with shop and erection drawings. Secondary members may be bundled or nested, while bolts and smaller accessories should be packed separately and clearly identified.

A project packing plan may include:

Durable piece marks

Bundled purlins and bracing members

Protected connection plates and fasteners

Separated roof and wall accessories

Moisture and edge protection for cladding

Container loading sequence

Packing list linked to member marks

Container, flat-rack or breakbulk planning

Member length can materially affect freight costs. Where transport splices are proposed to improve container loading, they must be included in the structural and connection design—not added during packing.

Xi'an Dongmeng Group Co., Ltd. combines industrial steel-material experience with project-based supply coordination for structural frames, secondary members, cladding and related building components.

Our procurement approach focuses on:

Reviewing the complete project requirement before quoting

Defining the supply and engineering boundary clearly

Matching materials and fabrication to the specified code

Providing processing and surface-protection options

Coordinating inspection documents with the purchase order

Preparing piece-marked components for export shipment

Supporting third-party inspection when requested

Actual engineering, fabrication, inspection, delivery and site-support scope is confirmed for each project.

What information is required to quote a steel structure building?

Provide the project location, building dimensions, use, design code, wind and snow data, seismic conditions, crane or equipment loads, cladding, coating, quantity and destination. Architectural or structural drawings should be attached whenever available.

Can a steel structure be quoted by square meter?

A preliminary budget may sometimes be estimated from area, but an accurate price requires calculated steel weight and a defined supply scope. Buildings with the same area can have significantly different steel quantities because of span, height, loads and structural systems.

Which structural design standards can be used?

Projects may be configured around AISC/ASCE, EN Eurocodes, AS/NZS or GB requirements, subject to contract review. The selected code, edition and destination requirements should be confirmed before engineering begins.

What is the maximum clear span available?

There is no responsible universal maximum. The feasible span depends on the structural system, building height, roof loads, wind, snow, seismic conditions, serviceability limits, transportation and project budget.

Are ASTM A572 Grade 50, S355 and Q355B equivalent?

No. They may have similar strength positioning, but their chemical composition, thickness rules, toughness, tolerances and certification requirements differ. Any substitution requires engineering and contractual approval.

Should I choose painted or galvanized steel?

Painted systems can suit many indoor and outdoor projects when designed for the exposure category. Hot-dip galvanizing may be preferred for suitable exposed components, but member size, venting and distortion must be considered. Severe environments may require a duplex system.

Can crane beams and mezzanine floors be included?

Yes, when included in the project scope. Crane capacity, duty class, span and wheel loads must be provided. Mezzanine design requires floor loads, equipment positions, vibration criteria and access requirements.

Can roof and wall panels be supplied with the steel frame?

A complete building-envelope package can be configured with profiled sheets or insulated sandwich panels. Panel type, thickness, coating, insulation core, fire performance and thermal requirements must be specified.

What quality documents are available?

Possible documents include material certificates, approved drawings, dimensional reports, welding documents, NDT reports, coating reports, bolt certificates and packing records. Required documents must be listed in the RFQ and purchase order.

Are foundations and erection included?

Foundation design, civil works and site erection are project-specific and should not be assumed. When included in the engineering scope, column reactions, anchor-bolt layouts or related drawings may be provided. Local approval remains subject to the destination authority and responsible engineer.

Can third-party inspection be arranged?

Third-party inspection can be incorporated into the inspection plan when requested before production. The inspection agency, hold points, test scope and reporting requirements should be agreed in advance.

What affects production time?

Engineering approval, material availability, project tonnage, fabrication complexity, coating system, inspection requirements and shipping plan all affect the schedule. Lead time should be confirmed after drawings and the supply scope are approved.

For an accurate technical and commercial quotation, please send:

Project location

Building use

Length × width × eave height

Required clear span

Design code

Wind, snow and seismic information

Crane or equipment loads

Roof and wall requirements

Corrosion and fire-protection requirements

Required documentation

Total quantity

Destination port

Architectural or structural drawings

 

 

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