Rongbang · Rail HVAC fans and fabrication

Fan, housing or complete unit

Rongbang's catalogue separates rail HVAC equipment, fans, purifiers and precision sheet metal. The centrifugal-fan listing gives a name and an image. Ask which parts Rongbang designs, makes, buys in and integrates, and which controlled drawing and revision covers the offered assembly. The metro housing work shows sheet-metal capability; refrigeration-system design needs its own references.

For a fan, settle the impeller, casing, motor, mounting and inlet and outlet connections. For sheet metal, specify material, tolerances, welding, coating and dimensional inspection. For a complete rail HVAC unit, assign refrigeration, filtration, drainage, electrical and control work and installation separately.

Workshop equipment and the inspection plan

Rongbang lists laser cutting, turret punching, shearing, bending, spot, suspended and argon-arc welding, a fan wind-tunnel laboratory and impeller dynamic-balancing equipment. The 2024 government report mentions the laser cutting equipment and the housing orders then in production.

Ask for the inspection and test plan for your order. It should cover incoming material traceability, controlled fabrication, weld inspection where relevant, dimensional checks, coating, balancing and the selected fan's performance test. Request calibration records and the test conditions, and ask whether the wind tunnel holds any laboratory accreditation.

EN15085 and ISO 9001 certificates

The EN15085 certificate names Rongbang for welding of railway vehicles and components under EN15085-2:2020+A2:2025, class CL1, activities D/P. It runs from 8 January 2026 to 7 January 2028 and refers to an annex for the certified range. Ask for the annex and confirm status with the issuer if your contract depends on welding. CL1 is a welding class; aerodynamic, fire and shock performance need their own tests.

The quality certificate is ISO9001:2015 / GB/T19001-2016, recertified on 4 December 2025 and printed to expire on 26 December 2028. Its scope covers design, production and sales of railway HVAC ventilation fans and production and sales of sheet metal, with a branch annex. This replaces the ISO9001:2008 wording in the older profile.

Railway operating conditions

Tell Rongbang where the equipment mounts, the vibration and shock duty, ambient temperature, contamination, moisture and the corrosion protection required. Agree the electrical, fire and smoke and environmental requirements of the vehicle project with the vehicle integrator. The fan listing publishes no operating envelope.

Ask for test results on the actual assembly and mounting arrangement. Check that the test covered the delivered motor, bearings, wiring, fasteners, coating and anti-vibration mounts. Results from a similar impeller or another train project belong to that product.

Service access and change control

A rail fan has to fit the installed air path and stay maintainable. Check motor and bearing access, the removal route, connector reach, lifting points, guards and spare-part interchangeability. Approve drawing revisions and a change-control procedure, so a substitute motor or impeller cannot alter performance without review.

The contact page gives management and marketing phone numbers and no email address. The website sets no warranty period, lead time or overseas repair offer. Put spares, response and acceptance milestones into the contract.

Building the enquiry

Rongbang publishes a registered-capital figure; your delivery protection comes from contract terms and milestones. Start with the technical package and the contracting entity.

1. Define the assembly

   Vehicle and project, airflow and pressure duty, mounting envelope, electrical and control and environmental requirements.

2. Review the documents

   Exact-model curves, inspection and test reports, and the welding and quality annexes with issuer status.

3. Release and hand over

   Drawing and revision control, first-article and delivery inspection, installed tests, maintenance manuals, spares and the signed warranty.

Confirm in writing before ordering Rongbang equipment

Ask Rongbang to confirm: the plant address and the entity that signs; the fan model, performance curve, motor and electrical rating; the EN15085 annex range and issuer status; which tests the wind tunnel runs and under what accreditation; vibration, shock and fire test results on the delivered assembly; and warranty, spares and change-control terms.