Steel Structure Warehouse · Standard Building Series
The Warehouse Quote You Can Compare Line by Line — Here's the Actual Bill of Steel
Most warehouse quotes are one number, three renderings and a promise. That's why the cheapest bidder always wins the email round and the most expensive one wins at fabrication. We publish the member-by-member list — section sizes, grades, coatings, bolt classes. Compare any quote against ours, line by line. That's the dare.
Q355B Main Frame stated, not "or equal" | HDG Secondaries purlins & bracing, no paint touch-up race | ±5% Tolerance checked against shop drawings pre-packing | 50-Year Life −50 °C to +50 °C service envelope |

The Bill of Steel — and Where a Cheap Quote Quietly Thins It
Every line below is what our standard 8–10 m eave warehouse ships with, and the exact place competitors shave 8–15% off their price:
| Component | Our shipped standard | The classic 10% cheaper… |
|---|
| Columns & beams | Welded H, (300–550)×200×6×10 mm sized by YOUR loads · Q355B with mill certs | "Q235 or equal," web thickness quietly 6→5 mm, no section listed at all |
| Purlins & girts | C180×75×50×2.5 mm hot-dip galvanized — 15+ years without a ladder | 1.5–2.0 mm painted, "galvanized optional extra" — rust shows in year 3, from the roof side |
| Bracing set | Ø20 rods, L50×4 angle braces, Ø89 tie bars, knee braces — full stability system drawn | "Bracing included" with no layout — arrives as an assortment your crew improvises with |
| Bolts & anchors | 10.9 HS bolts, 4.8 ordinary, M24 anchors — grades stamped and listed | "High-strength bolts, one set" — grade revealed only when the inspector asks |
| Panels | EPS/rockwool/PU sandwich 50–200 mm, core & thickness written on the quote | "Sandwich panel, 50 mm" — density and steel face gauge are the missing 20% |
| Tolerance & QC | ±5% key dimensions verified against approved shop drawings BEFORE packing — records ship with the steel | No dimensional promise; errors become your site drilling on day 4 of erection |
Every line on our list carries a standard number. Ask any competitor to add theirs to their quote — then notice how long the reply takes. That delay is this table's sales pitch.
Performance Numbers, Translated Into Your Engineer's Language
| As tested & built | What it means on your site |
|---|
| Wind resistance "Grade 12" | frame designed for gusts of ≈ 35 m/s — your ASCE 7-22 / EN 1991 site value governs, we recalculate to it free |
| Seismic "intensity 8" | ≈ 0.15–0.2 g ground motion capacity — AISC 341 / EC8 detailing available for higher zones |
| Wall U-value 0.35 kcal/m²·h·°C | ≈ U 0.41 W/m²K — European practice for conditioned storage |
| Roof live load 0.5 kN/m² · bearing 150 kg/m² | maintainable roof with walkway pads; solar rails or units on request |
| Service −50 °C to +50 °C · design life 50+ years | Siberia to Gulf in one product line; fracture-checked steels for cold sites |
| Certificate trail | CE EN 1090 · AISC/AWS D1.1 · AS 5131 · ISO 1461/12944 — paperwork follows YOUR market, per the first email |
See Your Building Before It's Built — Our In-House 3D Designer
A real output from the parametric design tool our engineers run in-house: send dimensions, get the 3D model, a render of your actual building and a budget breakdown with an item-by-item BOQ — in minutes, not engineering weeks.

Standard Package
| Item | Standard Warehouse Package |
|---|
| System | Clear-span portal frame, welded H sections, all-bolted assembly · spans 15–60 m, eave 6–12 m |
| Frame steel | Q355B standard (Q235B available) · A36/A572 · S235–S355 to your market |
| Secondaries | HDG C/Z purlins & girts, full bracing set drawn — nothing "TBD on site" |
| Envelope | Single sheet or sandwich panels 50–200 mm; gutters in color steel, galv or stainless |
| Openings | Roller shutters & personnel doors sized to your traffic; aluminum/PVC windows on the designed line |
| Fasteners | M24 anchors, 10.9 HS bolts, 4.8 ordinary — all grades listed, delivered numbered |
| Codes & certificates | ASCE 7-22 / EN 1991 site loads · AISC 360 / EC3 / AS 4100 · CE EN 1090 · ISO 9001 · HDG ISO 1461 |
| What ships | Numbered members, erection drawings, this bill filled with YOUR actual sections, certificate file, seaworthy load plan |
| Lead time | 20–40 days · T/T 30% deposit, 70% before shipment |
| Send three sizes — get this same list filled with your real numbers: |
| width × length × eave height + site city + what you store — 48 h later you have GA drawings, the member-by-member bill of steel with section sizes, and a total you can defend in procurement. |