Buying pressure equipment from China for installation in the European Union requires more than asking whether the factory can “provide CE.” Under the Pressure Equipment Directive 2014/68/EU (PED), the manufacturer must first establish whether the equipment is in scope, classify it using the directive, select an allowed conformity-assessment procedure and satisfy the applicable Essential Safety Requirements. The required level of Notified Body involvement depends on the category and module.
1. PED scope begins with maximum allowable pressure
The European Commission describes PED 2014/68/EU as applying to the design, manufacture and conformity assessment of stationary pressure equipment with a maximum allowable pressure PS greater than 0.5 bar, subject to the Directive’s scope and exclusions. Pressure vessels, piping, safety accessories, pressure accessories and assemblies are treated differently in parts of the classification rules.
Do not classify using normal operating pressure when the Directive requires maximum allowable pressure. Also check whether another specific EU directive/regulation or an exclusion applies.
2. SEP versus Categories I, II, III and IV
Pressure equipment within the PED framework is classified according to equipment type, fluid state/group, PS and capacity parameter such as vessel volume V or piping DN, using Annex II tables. Equipment below the Category I thresholds may fall under Article 4(3) Sound Engineering Practice (SEP).
SEP equipment does not receive CE marking under the PED. The Commission’s PED guidance explicitly states that Article 4(3) equipment must not have PED CE marking or an EU Declaration of Conformity under PED. This is a frequent procurement misunderstanding: “PED applicable” does not mean every pressure item will bear CE.
3. Fluid Group 1 and Group 2 affect classification
PED Article 13 divides fluids into Group 1 and Group 2 using hazard classifications. The same vessel pressure and volume can therefore fall into different categories depending on the contained fluid. The process engineer/purchaser should provide fluid identity and safety classification rather than asking the fabricator to infer it from a generic service name.
4. Category determines the permitted conformity-assessment modules
| PED category | Modules listed in Article 14 | Procurement implication |
|---|---|---|
| I | A | Manufacturer internal production control; no Notified Body module involvement |
| II | A2, D1, E1 | Third-party/quality-system involvement depends on selected route |
| III | B (design type)+D/F; B (production type)+E/C2; H | Notified Body involvement becomes substantial |
| IV | B (production type)+D/F; G; H1 | Highest category; route includes extensive Notified Body involvement |
The manufacturer may choose among the modules allowed for the category, subject to the Directive. The commercial quotation should identify the proposed module because the inspection plan, design review, quality-system assessment and certificate package depend on it.
5. Use a Notified Body that is actually notified for PED and the required task
A famous inspection company is not automatically an acceptable PED Notified Body for every module. The European Commission’s NANDO database lists bodies notified by legislation and scope. Buyers should verify the body under Directive 2014/68/EU and confirm that its notified scope covers the selected conformity-assessment procedure.
This matters when sourcing from outside the EU because commercial “CE certificates” issued outside a notified legal scope do not replace the required PED conformity assessment.
6. ASME and PED can coexist, but one does not replace the other
A purchaser may specify ASME Section VIII Division 1 as the pressure-vessel design/construction basis while also requiring PED conformity for EU market placement. This can be feasible, but the project must demonstrate compliance with PED Essential Safety Requirements, including materials, permanent joining, examination, final assessment, marking and technical documentation. ASME authorization or a U-designated vessel by itself is not a PED conformity certificate.
The design team should prepare an ESR compliance approach and address any differences between the chosen design code and harmonized EN standards. Use of harmonized standards can provide a presumption of conformity for the requirements they cover, but their use is not the only theoretical route; alternative technical solutions require adequate demonstration.
7. Materials require a PED compliance route
PED material compliance can involve harmonized materials, European Approval for Materials or Particular Material Appraisal depending on the case. Material certificates alone do not resolve every PED material requirement. The Notified Body should be engaged early where its module/scope requires material or design review, especially for ASME material specifications or non-harmonized grades.
8. Welding and NDT personnel requirements must be planned before fabrication
PED Essential Safety Requirements address permanent joining and non-destructive testing. Depending on equipment category and the applicable requirements, approvals/qualifications by competent third parties can be necessary. Do not wait until welding is complete to ask whether existing WPS/PQR or NDT personnel qualifications satisfy the chosen PED route.
9. Final assessment, marking and EU Declaration of Conformity
For CE-marked pressure equipment, the manufacturer performs the required final assessment under the selected module, draws up the EU Declaration of Conformity and applies CE marking. Where the module requires it, the Notified Body identification number accompanies the CE marking under the Directive’s rules. The equipment marking must also include required identification and allowable-limit information.
The technical file and retained records should be defined in the document plan. The Directive requires the manufacturer to retain certain conformity documentation for the specified legal period; project owners may also require a separate turnover dossier.
10. Importer and manufacturer responsibilities should not be confused
For equipment manufactured outside the EU, the economic operator chain includes manufacturer and importer obligations. The importer must verify defined conformity elements before placing equipment on the EU market, but this does not transfer the manufacturer’s fundamental responsibility for designing/manufacturing compliant equipment and completing its required conformity tasks.
11. Practical PED RFQ workflow
- Confirm destination is EU/EEA market placement and check PED scope/exclusions.
- Identify equipment type, PS, V or DN, fluid phase and Group 1/2 classification.
- Determine SEP or Category I–IV using the correct Annex II table.
- Select an allowed conformity-assessment module.
- Engage/verify the PED Notified Body in NANDO when the route requires one.
- Agree design code and ESR compliance strategy.
- Freeze material compliance route, welding/NDT qualification plan and ITP.
- Define technical-file documents, final assessment, marking and Declaration of Conformity.
- Include importer/project-specific documentation and language requirements.
12. What to ask a Chinese supplier before award
- What PED category and module are you quoting, and who classified the equipment?
- Which Notified Body will be used, and what is its NANDO scope under 2014/68/EU?
- Which design code will be used and how will PED ESR compliance be demonstrated?
- How will ASME/Chinese material grades be handled under PED?
- Are welding procedure/personnel and NDT qualifications acceptable for the category/module?
- What certificates, reports, Declaration of Conformity and marking will be delivered?
- Which activities are hold points for the Notified Body?
- Does the quoted price include all NB review/inspection fees and re-visits?
Frequently asked questions
Does every PED pressure vessel need a Notified Body?
No. Notified Body involvement depends on category and module. Category I uses Module A. SEP equipment is handled under sound engineering practice and is not CE-marked under PED.
Can SEP equipment carry a CE mark under PED if the buyer asks for it?
No. European Commission PED guidance explicitly states that Article 4(3) SEP equipment must not be CE-marked under PED.
Can an ASME U-stamped vessel automatically receive PED CE marking?
No. ASME certification and PED conformity assessment are separate systems. PED classification, ESR compliance and the selected conformity module still have to be completed.
How do I verify a Notified Body?
Use the European Commission NANDO database and check the organization under Directive 2014/68/EU for the relevant conformity-assessment scope/module.
Should PED classification be done before quotation?
Yes, at least to a reliable preliminary level. Category and module affect material approval, design review, inspection, documentation, cost and lead time.
Related technical guides
Standards and references
The following official or industry technical resources were checked when preparing this guide. Always verify the edition and project-specific requirements before design or procurement.
- European Commission – Pressure Equipment Directive overview
- EUR-Lex – Directive 2014/68/EU
- European Commission NANDO information system
- European Commission pressure-equipment sector warning on unregulated certificates
Need a technical review before you send the RFQ?
Send the available datasheet and drawings to yifan.zhang@trilee.cn. TriLee can review manufacturability, missing inputs and quotation scope for custom shell-and-tube heat exchangers and related pressure equipment.