CN Quality Check
Standards Comparison Tool
EXECUTIVE SUMMARY
Scope: crane design rules (起重机设计规范) — GB/T 3811-2008 vs FEM 1.001. Both are TIER 1 design standards, but equivalence is NEQ: load-combination philosophy, duty classification (A1–A8 vs M1–M8/A1–A8) and partial factors differ. Procurement implication: FEM/EN-designed cranes cannot be accepted on GB/T 3811 documentation alone — a Chinese design re-check (设计复核) against GB/T 3811-2008 is required before CCC/type verification.
APPLICABLE CHINESE STANDARDS
| Standard No. | Title (Chinese) | Scope | Mandatory/Recommended | Status |
|---|---|---|---|---|
| GB/T 3811-2008 | 起重机设计规范 (Crane design rules) | Loads, load combinations, structural/mechanical design, safety factors | Recommended (GB/T) | Current |
| GB 6067.1-2010 | 起重机械安全规程 第1部分：总则 (Safety rules for lifting appliances — Part 1: General) | Mandatory safety requirements | Mandatory (GB) | Current |
| GB/T 3811-1983 | 起重机设计规范 (Crane design rules) | Superseded edition | Recommended | Withdrawn (废止) |
| TSG Q7015 / TSG Q7002 | 起重机械监督检验规则 (Crane supervisory inspection rules) | Type test & periodic inspection | Mandatory (TSG) | Current — Verify: current TSG edition |
STANDARD TIER CLASSIFICATION
| Standard | Tier | Description |
|---|---|---|
| GB/T 3811-2008 | TIER 1 — Design Standard | Defines loads, combinations, safety factors |
| GB 6067.1-2010 | TIER 1 — Safety Standard | Mandatory safety requirements |
| FEM 1.001 | TIER 1 — Design Standard | Load spectra, mechanism/structure classification |
| EN 13001 series | TIER 1 — Design Standard | Successor framework to FEM 1.001 |
FLAG: GB 6067.1-2010 is a safety standard used here as design-basis linkage — valid, as TSG type approval references it alongside GB/T 3811.
SCOPE BREAKDOWN
Design rules — loads & combinations
Chinese standard: GB/T 3811-2008: 起重机设计规范 (Crane design rules)
International equivalent: FEM 1.001: Rules for the design of hoisting appliances — 3rd ed. 1998 (multi-booklet) — ⚠️ largely superseded by EN 13001 series
Equivalence: NEQ
Standard tier match: Both TIER 1 — valid comparison
| Parameter | Chinese Standard Value (Clause) | International Value (Clause) | Deviation | Mutual Recognition | Procurement Impact |
|---|---|---|---|---|---|
| Load combination structure | 载荷组合 A/B/C (Load Combinations A/B/C) (GB/T 3811-2008 §4) | Load cases 1/2/3 (FEM 1.001 Booklet 1) | Different framework (no direct comparison) | 不可互认 (Not mutually recognised) | HIGH |
| Partial load factors | Verify: GB/T 3811-2008 §4 load-factor table | Verify: FEM 1.001 Booklet 1 §loads | Not comparable without clause text | 不可互认 (Not mutually recognised) | HIGH |
| Dynamic factor | Verify: GB/T 3811-2008 §4 dynamic coefficient | ψ factors per FEM 1.001 | Different method | 附加测试后互认 (Mutual recognition after additional testing) | MEDIUM |
Duty classification — mechanisms & structures
Chinese standard: GB/T 3811-2008 (工作级别 A1–A8)
International equivalent: FEM 1.001 — mechanisms M1–M8; structures A1–A8/E1–E8
Equivalence: NEQ
Standard tier match: Both TIER 1 — valid comparison
| Parameter | Chinese Standard Value (Clause) | International Value (Clause) | Deviation | Mutual Recognition | Procurement Impact |
|---|---|---|---|---|---|
| Mechanism grouping | 工作级别 A1–A8 (GB/T 3811-2008 §3) | M1–M8 (FEM 1.001 Booklet 1) | Different grouping basis (utilization + stress spectrum vs utilization + load state) | 附加测试后互认 (Mutual recognition after additional testing) | HIGH |
| Structure grouping | A1–A8 (GB/T 3811-2008 §3) | A1–A8 / E1–E8 (FEM 1.001) | Similar labels, non-identical criteria | 附加测试后互认 (Mutual recognition after additional testing) | MEDIUM |
KEY DIFFERENCES SUMMARY
- Load combinations: CN A/B/C vs FEM 1/2/3 — different partial-factor philosophy — 不可互认 (Not mutually recognised) — HIGH.
- Mechanism duty: A1–A8 vs M1–M8 — non-equivalent grouping basis — 附加测试后互认 (Mutual recognition after additional testing) — HIGH.
- Dynamic factors: CN coefficient vs FEM ψ — different method — 附加测试后互认 — MEDIUM.
- FEM 1.001 superseded by EN 13001 series in EU practice — verify which edition the supplier actually designed to — HIGH.
REGULATORY LINKAGE TABLE (法规联动)
| Compliance Scenario | Chinese Regulatory Basis | International Regulatory Basis |
|---|---|---|
| Mandatory product certification | TSG type test (型式试验) + GB 6067.1-2010 | CE marking (Machinery Directive 2006/42/EC), EN 13001 |
| Engineering acceptance inspection | TSG Q7015 supervisory inspection | EN 15011 / national installation codes |
| Import/export compliance | CCIB commodity inspection | Destination customs + EN conformity |
| Designer/engineer obligation | GB/T 3811-2008 design basis | Eurocode / EN 13001 |
AUDIT FLAG RESOLUTION
- ✅ RESOLVED: GB/T 3811-2008 is CURRENT (现行) — no supersession note. GB/T 3811-1983 is WITHDRAWN (废止).
- ✅ FALSE POSITIVE (domain flag): GB/T prefix — correctly a recommended standard, not mandatory GB.
- ⚠️ UNRESOLVED: FEM 1.001 booklet edition years — verify against supplier's design dossier.
- ⚠️ UNRESOLVED: All partial-factor and dynamic-factor numerics — Verify: GB/T 3811-2008 §4 and FEM 1.001 Booklet 1.
- 🔴 CRITICAL CORRECTION: Answer B labelled GB/T 3811 as "TIER 3" — incorrect; it is TIER 1 design standard.
PROCUREMENT VERDICT
- Obtain supplier's design dossier stating exact FEM/EN edition used.
- Commission Chinese design re-check (设计复核) against GB/T 3811-2008 §3–§4.
- Map mechanism duty M-class → A-class; document any de-rating.
- Confirm TSG type-test coverage for the specific crane type.
- Verify GB 6067.1-2010 safety compliance separately.
- Reject FEM-only documentation as sole acceptance basis.
REFERENCE DOCUMENT CHECKLIST (配套调阅清单)
- GB/T 3811-2008 §3 — duty classification A1–A8 criteria
- GB/T 3811-2008 §4 — load combinations A/B/C and partial factors
- GB 6067.1-2010 — mandatory safety requirements
- FEM 1.001 Booklet 1 — M1–M8 and load cases
- EN 13001-1/-2 — successor load actions
FIELD INSPECTION CHECKLIST
- Nameplate duty class (A-class) vs design dossier.
- Mechanism group marking on hoist/trolley.
- Structural weld documentation vs GB/T 3811 §5.
- Load test records per TSG.
- Safety devices per GB 6067.1-2010.
CONFIDENCE RATING
🟡 MEDIUM — standard statuses verified; core numeric factors (partial/dynamic) flagged for official text confirmation.
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