Steel Frame Workshop

Product Introduction

01Product Overview

Steel frame workshop under erection with crane

A steel frame workshop is a prefabricated building for manufacturing, repair and assembly, built on a bolted portal-frame steel skeleton with crane beam, color-coated or sandwich-panel cladding. It gives you a wide, bright, column-light floor for machine tools, workbenches and vehicle bays. As a dedicated steel frame workshop manufacturer, BBN Steel supplies the primary frame, crane beam, purlins, wall / roof panels, rolling doors and windows — engineered to your machine loads, crane capacity and local wind, snow and seismic code.

What We Can Build

Crane-ready fabrication and machine workshops
Assembly, packing and maintenance workshops
Sandwich-panel insulated workshops for comfort / clean use
Auto / vehicle service bays and wide rolling-door repair shops

Services We Provide

Free layout design, 3D model and structural calculation
Factory fabrication, galvanizing and export packaging
Global on-site guidance and full English documentation

Typical Workshop Applications

Machine Shop Fabrication Workshop Assembly Workshop Maintenance & Repair Auto / Vehicle Bay Woodworking Shop Agricultural Workshop Warehouse-Workshop Combo

02Professional Steel Frame Workshop Types

All types share a bolted, prefabricated portal frame for fast on-site assembly. Choose by crane, span, height and insulation need.

Clear-Span Portal

Single rigid frame, no interior columns. The standard steel frame workshop for open machine floors.

Multi-Span

Two or more column rows for very large footprints; economical above 30 m width.

Crane-Ready Frame

Overhead crane beam (up to 20 t) for machine shops and fabrication halls.

Insulated Workshop

PU / PIR sandwich panels keep a comfortable, clean working environment.

Service Bay Workshop

Wide rolling / sectional doors for vehicles, buses and equipment repair bays.

Lightweight Prefab

Light-gauge steel for small workshops, sheds and rural fabrication units.

03Applicable Workshop Scenarios

Our prefab steel workshops fit manufacturing, maintenance and agriculture. Common deployment scenarios:

Machine & Fabrication Shop

Crane-ready halls for CNC, welding and metal fabrication, with heavy floor loads.

Assembly Workshop

Bright, open floors for product assembly, packing and quality inspection.

Repair & Maintenance

Service bays with wide rolling doors for vehicle, equipment and plant upkeep.

Auto / Vehicle Bay

Steel structures for car, truck and bus service centers with drive-through access.

Agricultural Workshop

Farm machinery sheds, feed processing and tool workshops, naturally ventilated.

Warehouse-Workshop Combo

Front fabrication bay plus rear storage under one bolted steel roof.

04Steel Material & Grade Selection

We build workshops in the full range of structural grades. Grade is selected by span, crane and environment — the first driver of a durable steel frame workshop solution.

Steel Grade	Standard	Yield (MPa)	Use in Workshop
Q235B	GB/T 700	235	Secondary members, purlins and small sheds
Q355B (Q345B)	GB/T 1591	355	Main frames of medium / large workshops, crane beams
SS400	JIS G3101	245	General frame members for Asia projects
S355JR / S355J2	EN 10025-2	355	EU main frames, J2 for low-temperature impact
A36	ASTM A36	250	North America project frames
Q355GNH (weathering)	GB/T 4171	355	Low-maintenance outdoor frames, no paint needed

05Technical Specifications

Standard design envelope engineered to your machines, crane and local wind, snow and seismic loads.

Technical Parameter	Typical Range / Option
Design Standards	GB 50017, EN 1993 (Eurocode 3), AISC 360, ASCE 7
Steel Grade	Q235B / Q355B / SS400 / S355JR / A36
Span (clear)	12 – 45 m (clear-span), multi-span up to 100+ m
Eave Height	6 – 15 m (custom, crane-ready)
Overhead Crane	Up to 20 t, single / double girder
Wind Load	Up to 45 m/s (custom per region)
Snow Load	0.3 – 2.0 kN/m² (custom)
Wall / Roof Cladding	Color steel sheet / PU-PIR sandwich panel / glass wool
Anti-corrosion	Hot-dip galvanizing 80–120 µm / epoxy paint system
Optional Fitting	Crane beam, mezzanine, rolling door, ventilator, skylight

06Full-Cycle One-Stop Services

As a direct steel frame workshop manufacturer we control quality, cost and lead time from design to shipment.

Free Custom Design

Layout, 3D model and shop drawings delivered in 5–7 days, optimized to your machines and crane.

In-factory Fabrication

CNC cutting, drilling and welding under ISO 9001; bolted connections for fast on-site assembly.

Export-Grade Packaging

Members bundled, tagged and wrapped for container shipping to any port worldwide.

Global On-site Support

Remote guidance or site engineers for erection, alignment and final acceptance.

Official Documents

Mill Test Certificate, WPS, inspection reports and English installation manuals supplied.

07Quality Control & Certification

Every steel frame workshop is inspected before shipment to guarantee 20–50 year service life.

✓

Mill Test Certificate (MTC)

EN 10204 3.1 MTC for every steel batch, matching the ordered grade and thickness.

✓

Welding Procedure (WPS)

Qualified WPS and welder certificates; main joints UT / MPI inspected.

✓

Crane Beam Check

Crane girder alignment and rail tolerance verified before packing.

✓

Galvanizing / Coating

Hot-dip galvanizing per ISO 1461 or paint DFT checked with gauges.

✓

Dimension Check

Pre-assembly test-fit of frames and bolt holes before packing.

08FAQ

Q1Are you a steel frame workshop manufacturer or a trading company?

We are a direct steel frame workshop manufacturer with our own fabrication plant and QC team. You buy from the source, which is why our metal workshops for sale are competitively priced and lead times are controllable.

Q2Can you build a crane-ready workshop?

Yes. We design overhead crane beams up to 20 t (single / double girder) into the main frame, with reinforced columns and crane rail tolerance verified before shipment.

Q3Can you customize span, height and cladding?

Yes. Span, eave height, bay, roof slope, doors, windows, mezzanine and sandwich-panel insulation are all customizable. Send a site drawing and we return a 3D model.

Q4How do you handle wind, snow and seismic loads?

Every project is engineered to your local code (GB, Eurocode, AISC or ASCE) with wind up to 45 m/s, snow up to 2.0 kN/m² and seismic design where required.

Q5What is the lead time and minimum order?

Typical lead time is 25–70 days by area; we accept small workshops (from 300 m²) and full factory plants alike.

09Get Your Steel Frame Workshop Quotation

Get Your Custom Workshop Solution

Send us your site area, span, eave height, crane capacity, cladding and local wind / snow load. Our engineers return structural drawings, a calculation report and a formal steel frame workshop price within 24 hours.

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