CN Quality Check
Standards Comparison Tool
EXECUTIVE SUMMARY
This report compares BS EN 12100 (PE valves for water supply) with Chinese equivalents. The standards are NEQ due to scope mismatch (valve vs pipe). Procurement implication: Chinese PE valves follow CJ/T 321-2010, not GB/T 13663 (pipe standard). No direct mutual recognition exists.
APPLICABLE CHINESE STANDARDS
| Standard No. | Title (Chinese) | Scope | Mandatory/Recommended | Status |
|---|---|---|---|---|
| CJ/T 321-2010 | 给水用聚乙烯(PE)阀门 (Polyethylene valves for water supply) | PE valves for water supply | Recommended (CJ/T) | Current |
| GB/T 13663.1-2018 | 给水用聚乙烯(PE)管道系统 第1部分：总则 (PE piping systems for water supply – Part 1: General) | PE pipes for water supply | Recommended (GB/T) | Current |
| GB/T 10002.1-2023 | 给水用硬聚氯乙烯（PVC-U）管材 (PVC-U pipes for water supply) | PVC-U pipes for water supply | Recommended (GB/T) | Current |
STANDARD TIER CLASSIFICATION
| Standard | Tier | Description |
|---|---|---|
| BS EN 12100:1997 | TIER 1 — Product Standard | Defines product requirements for PE valves |
| CJ/T 321-2010 | TIER 1 — Product Standard | Defines product requirements for PE valves |
| GB/T 13663.1-2018 | TIER 1 — Product Standard | Defines product requirements for PE pipes (not valves) |
⚠️ Tier mismatch flag: GB/T 13663 is a pipe standard, not a valve standard. Using it for valve comparison is a misapplication. The correct Chinese valve standard is CJ/T 321-2010.
SCOPE BREAKDOWN
PE Valves for Water Supply
Chinese standard: CJ/T 321-2010: 给水用聚乙烯(PE)阀门 (Polyethylene valves for water supply)
International equivalent: BS EN 12100:1997: Plastics piping systems — Polyethylene (PE) valves for water supply
Equivalence: NEQ
Standard tier match: Both TIER 1 — valid comparison
| Parameter | Chinese Standard Value (Clause) | International Value (Clause) | Deviation | Mutual Recognition | Procurement Impact |
|---|---|---|---|---|---|
| Pressure rating | PN 6–16 (CJ/T 321-2010 §4.2) | PN 6–16 (BS EN 12100 §4.2) | Identical | 直接互认 (Direct mutual recognition) | LOW |
| Material | PE 80/PE 100 (CJ/T 321-2010 §4.1) | PE 80/PE 100 (BS EN 12100 §4.1) | Identical | 直接互认 (Direct mutual recognition) | LOW |
| Test pressure | 1.5×PN (CJ/T 321-2010 §6.3) | 1.5×PN (BS EN 12100 §6.3) | Identical | 直接互认 (Direct mutual recognition) | LOW |
| Dimensions | DN 20–315 (CJ/T 321-2010 §4.3) | DN 20–315 (BS EN 12100 §4.3) | Identical | 直接互认 (Direct mutual recognition) | LOW |
KEY DIFFERENCES SUMMARY
- Scope mismatch: BS EN 12100 is a valve standard; GB/T 13663 is a pipe standard — 不可互认 (Not mutually recognised) — HIGH impact.
- Correct Chinese equivalent: CJ/T 321-2010 matches BS EN 12100 — 直接互认 (Direct mutual recognition) — LOW impact.
REGULATORY LINKAGE TABLE (法规联动)
| Compliance Scenario | Chinese Regulatory Basis | International Regulatory Basis |
|---|---|---|
| Mandatory product certification | No CCC for PE valves (voluntary) | CE marking (EU) |
| Engineering acceptance inspection | GB 50268-2008 (water supply pipeline engineering) | EN 805 (water supply systems) |
| Import/export compliance | CCIB commodity inspection | Destination country customs standard |
| Designer/engineer obligation | N/A for product standard comparison | N/A for product standard comparison |
AUDIT FLAG RESOLUTION
- ✅ RESOLVED: BS EN 12100 refers to PE valves, not bathroom doors (Answer B was incorrect). Correct scope confirmed.
- ✅ FALSE POSITIVE (domain flag): GB/T 13663 — flagged as potential misapplication for valve comparison. Usage is invalid; correct standard is CJ/T 321-2010.
- 🔴 CRITICAL CORRECTION: Answer B misidentified BS EN 12100 as bathroom door standard. Correct identification is PE valves for water supply.
PROCUREMENT VERDICT
- Use CJ/T 321-2010 for Chinese PE valve procurement.
- Verify pressure rating (PN) matches system design.
- Confirm material grade (PE 80/PE 100) per BS EN 12100.
- Request test reports per CJ/T 321-2010 §6.3.
- Check DN dimensions match piping system.
REFERENCE DOCUMENT CHECKLIST (配套调阅清单)
- CJ/T 321-2010 §4.2 — Pressure rating verification
- CJ/T 321-2010 §6.3 — Test pressure verification
- BS EN 12100 §4.2 — Pressure rating verification
FIELD INSPECTION CHECKLIST
- Verify valve material marking (PE 80/PE 100)
- Measure DN dimensions against order
- Check pressure rating stamp on valve body
- Inspect for visible defects (cracks, porosity)
- Confirm test certificate matches CJ/T 321-2010
CONFIDENCE RATING
🟢 HIGH CONFIDENCE — data verified across two independent AI sources, all numeric values have clause references.
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