ZSJH
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Longitudinal frame spacing of 6–9m provides a starting range for planning repeated production modules. A machine cell may fit within one bay, while a longer assembly line can extend across several bays. Frame spacing is measured along the building length; it is different from the clear span across the workshop.
A 6m grid places frames and support points closer together. A 9m grid reduces the number of frame lines over the same building length but increases the spans of secondary members and, where applicable, crane runway beams. The overall cost depends on loads, sections, foundations and cladding support. A wider bay is not automatically a lower-cost solution.
Position machine loading areas, forklift aisles and internal transfer routes before fixing columns and doors. In multi-span buildings, align internal columns with equipment boundaries or aisles where practical. Keep permanent bracing out of required vehicle openings and maintain its structural function when partitions change.
Item | Configuration and design basis |
Structural system | Single-storey steel portal frame; single-span or multi-span layout to suit the process. |
Longitudinal frame spacing | 6–9m planning range; final grid verified for equipment, loads and overall economy. |
Workshop span | Project-specific; establish clear working width, internal columns and crane span separately. |
Building height | Determined by equipment clearances, crane hook height and overhead services. |
Crane option | Runway structures for 5–25t rated overhead cranes, subject to supplier data and engineering. |
Steel materials | Q355B, ASTM A572 Grade 50 or EN S355 where specified; grades are not automatically interchangeable. |
Secondary structure | C/Z purlins, wall girts, bracing and opening supports sized for the selected system. |
Roof and wall options | Profiled metal cladding or insulated assemblies; thermal, condensation and fire requirements defined by project. |
Design actions | Local wind, snow and seismic actions, crane actions and confirmed equipment or service loads. |
Connections and welding | Shop-welded and site-bolted connections; applicable welding standard and inspection scope agreed in the specification. |
Protective finish | Paint or galvanizing as appropriate; corrosion exposure and any required fire protection defined separately. |
These are configuration options, not a pre-approved universal kit. Member sizes, plate thicknesses and foundation reactions follow the project calculations and approved drawings.


The quoted building package may include main frames, secondary steel, bracing, connection components, agreed roof and wall systems, door supports and crane-supporting steelwork. The bill of materials and drawings establish the included items.
Confirm crane rails, clips, stops, bridge crane, hoist, power supply and controls as separate line items. Foundations, machine bases, slab, internal partitions, electrical systems, ventilation, fire systems and erection are included only when stated in the contract.
ZSJH coordinates structural design, detailing, fabrication and export delivery for steel building projects. Production layouts and crane information can be incorporated into the drawing review before member fabrication. Agreed quality documentation can address materials, welds, dimensions, bolt holes and coatings; component marking and packing lists support site identification.

It depends on the layout and structural demands. Fewer frames can mean longer secondary-member and runway spans. Compare complete schemes, including foundations and crane supports, against the same operating requirements.
No. A crane configuration is selected for the project. The lifting machine and its supporting steelwork must each be identified in the quotation; the rated capacity alone is insufficient for runway design.
Non-load-bearing partitions may be adapted after checking anchorage, services, exits and fire requirements. Structural columns and bracing cannot be moved or removed as part of a routine partition change.
Only where the weights, locations and attachments have been included in the design. Identify suspended services and maintenance loads before fabrication approval.
Send ZSJH your production plan and lifting requirements. We can discuss the frame grid, crane-support arrangement, access openings and building package around the way your factory will operate.
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Email: sales@zsjhsteel.com
WhatsApp: +86 15122582058