CN Quality Check
Standards Comparison Tool
GB/T 13752, GB/T 5031, GB 5144 vs EN 14439 — Tower Crane Standards: Final Certified Comparison
EXECUTIVE SUMMARY
This report covers the tower crane (塔式起重机) standard family: two recommended product/design standards (GB/T 13752, GB/T 5031), one mandatory safety code (GB 5144), versus the European harmonised product standard EN 14439. All four sit at TIER 1 (product/design/safety), so direct comparison is valid — but the Chinese set splits design, product and safety across three documents while EN 14439 consolidates them. The single most important procurement implication: GB 5144 is mandatory (强制性) and cannot be substituted by EN 14439; CE marking under EN 14439 does not confer Chinese market access.
APPLICABLE CHINESE STANDARDS
| Standard No. | Title (Chinese) | Scope | Mandatory/Recommended | Status |
|---|---|---|---|---|
| GB/T 13752-2017 | 塔式起重机设计规范 (Design rules for tower cranes) | Design loads, structural calculation, mechanisms, safety devices | Recommended (推荐性) | Current |
| GB/T 5031-2019 | 塔式起重机 (Tower cranes) | Classification, technical requirements, test methods, marking | Recommended (推荐性) | Current |
| GB 5144-2006 | 塔式起重机安全规程 (Safety code for tower cranes) | Mandatory safety: stability, safety devices, erection/dismantling, inspection | Mandatory (强制性) | Current |
| GB/T 3811-2008 | 起重机设计规范 (Design rules for cranes) | General crane design (umbrella standard) | Recommended | Current |
| GB 50278-2010 | 起重设备安装工程施工及验收规范 (Code for construction and acceptance of crane installation) | On-site installation & acceptance | Mandatory | Current |
| GB/T 5972-2016 | 起重机用钢丝绳检验和报废实用规范 (Wire ropes for cranes — inspection and discard) | Rope inspection/discard criteria | Recommended | Current |
STANDARD TIER CLASSIFICATION
| Standard | Tier | Description |
|---|---|---|
| GB/T 13752-2017 | TIER 1 — Design/Product Standard | Design rules for tower cranes |
| GB/T 5031-2019 | TIER 1 — Product Standard | Finished-crane requirements & testing |
| GB 5144-2006 | TIER 1 — Mandatory Safety Standard | Safety requirements (强制性) |
| EN 14439:2006+A2:2009 | TIER 1 — Product Standard | EU harmonised tower crane standard |
| GB 50278-2010 | TIER 3 — Installation/Acceptance Code | On-site installation verification |
FLAG: No tier mismatch — all four primary standards are TIER 1. GB 50278-2010 is cited only for the regulatory-linkage row, not for parameter comparison.
SCOPE BREAKDOWN
Design & Structural Calculation
Chinese standard: GB/T 13752-2017: 塔式起重机设计规范 (Design rules for tower cranes)
International equivalent: EN 14439:2006+A2:2009 — Cranes — Tower cranes — ⚠️ verify current edition
Equivalence: MOD
Standard tier match: Both TIER 1 — valid comparison
| Parameter | Chinese Standard Value (Clause) | International Value (Clause) | Deviation | Mutual Recognition | Procurement Impact |
|---|---|---|---|---|---|
| Load classification | Duty classes per GB/T 3811-2008 [Verify: GB/T 13752-2017 ~§4] | ISO 4301-1 classes A1–A8 (EN 14439 §4) | Different classification scheme | 附加测试后互认 (Mutual recognition after additional testing) | HIGH |
| Wind load | Per GB/T 13752-2017 [Verify: ~§5] | ISO 4302 / EN 13001-2 | Different method (no direct comparison) | 附加测试后互认 (Mutual recognition after additional testing) | HIGH |
| Stability | Per GB 5144-2006 [Verify: ~§4] | EN 14439 §5 stability | Different method | 附加测试后互认 (Mutual recognition after additional testing) | HIGH |
Product Requirements & Testing
Chinese standard: GB/T 5031-2019: 塔式起重机 (Tower cranes)
International equivalent: EN 14439:2006+A2:2009
Equivalence: MOD
Standard tier match: Both TIER 1 — valid comparison
| Parameter | Chinese Standard Value (Clause) | International Value (Clause) | Deviation | Mutual Recognition | Procurement Impact |
|---|---|---|---|---|---|
| Safety devices | Mandatory set per GB 5144-2006 [Verify: ~§5] | EN 14439 §6 | Comparable scope | 附加测试后互认 (Mutual recognition after additional testing) | HIGH |
| Test/verification | Type test per GB/T 5031-2019 [Verify: ~§6] | EN 14439 §7 verification | Different procedure | 附加测试后互认 (Mutual recognition after additional testing) | MEDIUM |
Mandatory Safety Code
Chinese standard: GB 5144-2006: 塔式起重机安全规程 (Safety code for tower cranes)
International equivalent: EN 14439:2006+A2:2009 (safety clauses)
Equivalence: NEQ
Standard tier match: Both TIER 1 — valid comparison
| Parameter | Chinese Standard Value (Clause) | International Value (Clause) | Deviation | Mutual Recognition | Procurement Impact |
|---|---|---|---|---|---|
| Mandatory status | 强制性 (Mandatory) | Harmonised (voluntary basis for CE) | Regulatory, not technical | 不可互认 (Not mutually recognised) | HIGH |
| Erection/dismantling | Governed by GB 5144-2006 [Verify: ~§8] | EN 14439 + national rules | Different regime | 不可互认 (Not mutually recognised) | HIGH |
KEY DIFFERENCES SUMMARY
- Mandatory status — GB 5144 is 强制性 (mandatory); EN 14439 is harmonised/voluntary. 不可互认 (Not mutually recognised). HIGH.
- Document structure — CN splits design/product/safety across three standards; EN 14439 consolidates. 附加测试后互认 (Mutual recognition after additional testing). MEDIUM.
- Load classification — CN uses GB/T 3811 duty classes; EN uses ISO 4301-1 A1–A8. 附加测试后互认 (Mutual recognition after additional testing). HIGH.
- Wind load method — CN GB/T 13752 vs ISO 4302/EN 13001-2. 附加测试后互认 (Mutual recognition after additional testing). HIGH.
REGULATORY LINKAGE TABLE (法规联动)
| Compliance Scenario | Chinese Regulatory Basis | International Regulatory Basis |
|---|---|---|
| Mandatory product certification | CCC / type approval (起重机械制造许可) | CE marking under Machinery Directive 2006/42/EC |
| Engineering acceptance inspection | GB 50278-2010 | National installation rules / EN 14439 |
| Import/export compliance | CCIB commodity inspection | Destination-country customs |
| Designer/engineer obligation | GB/T 13752-2017 (design) | Eurocode / local building regulation |
AUDIT FLAG RESOLUTION
- ✅ RESOLVED: GB 5144-2006 correctly cited as GB (mandatory), not GB/T. Confirmed CURRENT per std.samr.gov.cn.
- ✅ RESOLVED: GB/T 13752-2017 and GB/T 5031-2019 confirmed CURRENT — no supersession note added.
- ✅ FALSE POSITIVE (domain flag): GB/T 3811-2008 — cited as umbrella design standard; valid extension because GB/T 13752-2017 references it for load/duty classification.
- ⚠️ UNRESOLVED: EN 14439 edition currency — verify against CEN catalogue (possible post-2009 amendment).
- ⚠️ UNRESOLVED: All clause numbers marked [Verify] — confirm against official texts.
PROCUREMENT VERDICT
- Confirm GB 5144-2006 compliance separately — EN 14439 CE marking does NOT satisfy it.
- Obtain GB/T 13752-2017 and GB/T 5031-2019 full texts to map duty-class equivalence.
- Verify EN 14439 current edition before accepting supplier CE documentation.
- Require type-test reports against GB/T 5031-2019 for Chinese market entry.
- Confirm installation acceptance against GB 50278-2010.
- Map wind-load and stability calculations between GB/T 13752 and EN 13001-2.
REFERENCE DOCUMENT CHECKLIST (配套调阅清单)
- GB/T 13752-2017 §4–§5 — load classification, wind load
- GB/T 5031-2019 §6 — type test procedure
- GB 5144-2006 §4–§8 — stability, safety devices, erection
- GB/T 3811-2008 — duty classification basis
- EN 14439:2006+A2:2009 §4–§7 — classification, stability, verification
FIELD INSPECTION CHECKLIST
- Verify safety devices (moment limiter, anti-collision) against GB 5144-2006.
- Confirm duty-class marking matches GB/T 5031-2019.
- Check wire rope inspection records per GB/T 5972-2016.
- Verify erection/dismantling plan against GB 5144-2006.
- Confirm installation acceptance records per GB 50278-2010.
CONFIDENCE RATING
🟡 MEDIUM — core standard identities and mandatory/recommended status verified across two AI sources and official authority; clause-level numeric values flagged [Verify] pending official text confirmation.
Technical comparison report — CN Quality Check Standards Tool. This report is NOT a substitute for official standard texts or on-site engineering verification. For physical compliance inspection in China: contact Yang Jia, Registered Supervision Engineer (注册监理工程师).
Need on-site compliance verification in China?
This report is an AI-assisted technical reference. For physical inspection, material testing, and official acceptance in China, contact Yang Jia directly.
Request an Inspection →