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Steering Suspension System Specification Example for Municipal Fleets: Fixed Type

Source:Injection Valves / Time:2026-09-18

Steering Suspension System Specification Example for Municipal Fleets: Fixed Type

This is a worked specification for steering suspension system in a fixed type programme. It is the document we would send a buyer who asks what exactly they are getting: the material, the dimensions that are actually controlled, the finish, and the checks that happen before anything is packed.

The fixed type version exists because the duty cycle on municipal fleets is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually inconsistent hardness between lots.

Steering Suspension System

Example specification

ItemSteering Suspension System
ApplicationMunicipal Fleets
VersionFixed Type
Base materialSintered Metal
Controlled dimensions3 key dimensions, recorded per lot
Tolerance band±0.05 mm
Finishpainted
MOQ2,000 pieces per specification
Sampling7 working days, 5 days per revision
ComplianceSAE J431

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Sintered Metal, in this example.
  3. List the dimensions that are actually controlled and the tolerance on each.
  4. Name the finish and what it has to survive.
  5. State the inspection level and who pays when a lot fails.

Steering Suspension System example

Processes involved

  • laser cutting
  • die casting
  • sintering
  • anodising
  • electroplating
  • powder coating

Where this example applies

Programmes that run fixed type most often specify this build for municipal fleets. Related applications include assembly programmes, utility trailers, fleet maintenance, light trucks, scooter fleets.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 2.5 sampling on the finished lot.
  • Finish inspection under agreed lighting.
  • Carton drop test on the first lot of a new packing specification.

Questions buyers ask

What testing is included?

Standard lots ship with dimensional and hardness reports. SAE J431 documentation is issued with the shipment when your market requires it.

How long does sampling take?

Samples leave the factory in 7 working days, and each revision round adds about 5 days once you have seen the first piece.

Can you match an existing sample?

Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.

How is packing specified?

Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.

Share a sample or a drawing and we will quote against a written specification, not against a photograph.

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