Steel structure manufacturer since 2009 · 8 fabrication bases in China
Steel Buildings
Steel buildings for grain reserves and bulk materials
Stored grain, fertiliser or ore pushes on the walls, and the push changes as the pile is filled from one side. Fertiliser also attacks bare steel. Those two facts, not the roof span, set the design of a bulk store.
750 ألف طن
Shenshan grain reserve capacity
60 m
Typical flat store span
C4–C5
Coating categories used
Conveyor
Galleries and trestles supplied
Store types
Which building for which material
| النوع | المواد | Structure | Key design check |
|---|---|---|---|
| Flat grain store | Wheat, rice, maize | Frame with retaining walls | Wall pressure, aeration ducts |
| Bulk shed | Fertiliser, salt, clinker, coal | Truss or arch on concrete push walls | Corrosion, abrasion, dust |
| Conveyor gallery and trestles | All bulk | Truss galleries on trestles | Span, wind, conveyor loads |
| Transfer towers | All bulk | Braced frame | Vibration, equipment loads |
We do not supply silos. We supply flat stores, sheds and the structures around silos.
Wall pressure
What we need to size the walls
| Input | Why it matters |
|---|---|
| Material and bulk unit weight | Pressure is proportional to weight; fertiliser and ore are heavier than grain |
| Angle of repose and wall friction | Sets how much of the pile pushes sideways |
| Pile height against the wall | Pressure grows with depth; the top metre is light, the bottom is not |
| Filling and emptying method | Filling from one side or by loader gives uneven, asymmetric load |
| Vehicles inside | Loader impact and surcharge at the wall base |
Material properties per EN 1991-4 Annex E or tested values. Deep bins follow Janssen theory; flat stores are closer to retaining wall pressure.
Rule we design to: material against the wall is retained by concrete push walls up to pile height. Steel columns and cladding start above the pile. Where steel walls take grain directly, we design heavy girts and sheeting for the full pressure.
Fertiliser and salt
Why bulk stores corrode from the inside
Many fertilisers are hygroscopic: they draw moisture from the air and form a corrosive solution on any steel they touch. Damage is fastest at the base of columns and where dust settles.
- No steel in contact with the stored material
- Hot-dip galvanizing plus top coat, or a C5 system per ISO 12944
- No ledges, open channels or water traps facing the pile
- Sealed column bases above the push wall
- Cladding fixed so dust cannot collect behind it
Dust, air and access
Checks beyond the structure
Dust explosion
Grain, sugar and coal dust can explode. Follow NFPA 61 or ATEX zoning: venting, earthing of the frame, cleanable surfaces.
Ventilation and aeration
Roof monitors, louvres and floor aeration ducts set openings in the frame.
Loader impact
Column bases protected with concrete plinths or guards.
Inspection access
Walkways along trusses for inspection and cleaning.
مشروع مرجعي
Shenshan Grain Reserve
A grain reserve with storage capacity of 750,000 t in the Shenzhen-Shanwei Special Cooperation Zone.
- Flat stores with large clear spans
- Coating designed for humid coastal exposure
- Conveyor and handling interfaces coordinated
Can steel walls take grain pressure directly?
For low piles, yes, with heavy girts and sheeting. For higher piles, concrete push walls take the pressure and steel sits above.
Which coating for a fertiliser store?
Typically galvanizing plus a C5 top coat with sealed details, and no steel in contact with the material.
Do you supply conveyor galleries?
Yes, galleries, trestles and transfer towers, coordinated with your conveyor supplier.
Do you supply silos?
No. We supply flat stores, sheds and the structures around silos.
التخزين بالجملة
Tell us the material and the pile height
Material, capacity, pile height, filling method and site are enough for a first scheme.