Quick answer: Write five figures: load per shelf, adjustment pitch, locking and key tiers, fixing method, and door opening angle. All are measurable and comparable; total load and outer size hand the decision to the supplier.

Table of contents

  • The five specifications
  • Shelves: load against pitch
  • Locking: three forms and the record
  • Fixing: combining three methods
  • Acceptance and how to write the sheet
  • FAQ

1. The five specifications

Shelf load is usually twenty to forty kilograms: a long weapon with optics runs five to seven, three to five per shelf, so forty is a sensible ceiling. Beyond it the shelf deflects and the brackets fail first.

Close-up of the shelf load label area and shelf bracket
Close-up of the shelf load label area and shelf bracket

Adjustment pitch sets adaptability: fifty millimetres covers most types, a hundred forces compromise after a weapon change. Welded shelves lock capacity to one configuration permanently.

Locking and fixing follow: three-point or single, with or without key tiers; anchors, anti-tip bracket and ballast in combination; and a door angle above 120 degrees, or the innermost item requires a sideways reach.

FigureTypicalTestIf short
Shelf load20 to 40 kgdistributed load for 24 hoursdeflection, bracket failure
Adjustment pitch50 mmmove one shelfwill not fit after a change
Lockingthree-point with key tierswalk the key tiersno traceability
Fixinganchors or anti-tip with ballastpush the cabinettips when knocked
Door angle120 degrees or moremeasure the openinghard to reach the far end

2. Shelves: load against pitch

Load and pitch conflict: a denser pitch improves adaptability but adds stiffener holes, lowering shelf stiffness for the same material — so fifty-millimetre cabinets usually add a fold or ribs to compensate.

Close-up of the three-point locking bar and key cylinder
Close-up of the three-point locking bar and key cylinder

Judge a shelf by fold height and bracket count: below fifteen millimetres with two brackets, a forty-kilogram distributed load deflects past five millimetres; a twenty-five millimetre fold and three brackets fix it in the same steel.

3. Locking: three forms and the record

A single-point lock secures one side and relies on door stiffness; a three-point locks top, middle and bottom; a linked cabinet lock ties doors to internal partitions. Pry resistance differs by an order of magnitude for about twenty percent more.

Doors open showing adjustable shelf positions
Doors open showing adjustable shelf positions

Key tiers should match the staffing: manager, supervisor, duty officer. More tiers is not safer — past the number of real roles, keys get lent and traceability worsens.

4. Fixing: combining three methods

Anchors suit concrete and resist tipping best but prevent moving; an anti-tip bracket suits wall placement and costs little but needs a sound wall; ballast suits field stores but eats the bottom of the cabinet. Combine anchors, then bracket, then ballast.

Close-up of the base fixing brackets and anchor bolts
Close-up of the base fixing brackets and anchor bolts

Check level after fixing: an out-of-level cabinet swings its doors and misaligns the bolt. Measure top and bottom, and shim beyond two millimetres of difference.

5. Acceptance and how to write the sheet

Five actions: distributed load for a day, move a shelf, walk the key tiers, push the cabinet, measure the door angle. Twenty minutes, no instruments; a refusal to run any one of them usually means the figure is not held.

Write numbers and positions, not adjectives: reinforced shelf cannot be accepted, a twenty-five millimetre fold with three brackets can. The price difference lives in exactly those details.

Conclusion

Five figures: shelf load, adjustment pitch, locking with tiers, fixing, door angle. Write numbers and accept them, or the quotation reduces to price — and price is where these five get cut. Put all five into the technical conditions and take three quotes on the same terms before negotiating, so acceptance follows the numbers rather than individual judgement.

This article covers container-side specifications and design implications only, not the handling, loading or use of the contents.

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