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Why should campus basketball court flooring be checked against GB 36246-2018?
GB 36246-2018 has been the mandatory national standard for synthetic surface flooring on school campuses since 2019. All 18 hazardous substance tests must pass before a product is eligible for school procurement. Covers standard content, corresponding tests, and key procurement verification points.
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Ningxia Xinglong Middle School 5500㎡ campus basketball court (delivered 2018) — ANK2F four-square grid / GB 36246 passed
So which material should I actually choose?→ Material comparison · Selection (suspended vs. acrylic/silicon PU/PVC…)
Core Content of GB 36246-2018
This standard isMandatory national standard(starts with GB + the number has no /T), it is not a recommended standard but a mandatory one that campus venues must comply with. It covers 3 major areas:
- Hazardous substance limits (18 items): Formaldehyde, benzene, toluene + xylene, TVOC, polycyclic aromatic hydrocarbons (PAHs), phthalate plasticizers, total of 4 phthalates, soluble lead/cadmium/chromium/mercury, 3-MCPD, etc.
- Physical properties: impact absorption ≥ 35%, vertical deformation 0.6–3.0mm, anti-slip value BPN ≥ 47, flame retardancy grade B or above, etc.
- Odor Rating: ≤ grade 3 (on a 5-grade scale, grade 3 means "detectable but not obvious")
Buyer verification checklist
| Verification items | How to read | Non-compliance risk |
|---|---|---|
| Report model | Identical, word for word, to the actually purchased model | The manufacturer passes off a flagship model's certification as an ordinary model's, and the delivered goods don't match what was ordered |
| Testing institution | Carries both CNAS and CMA marks | Reports issued by unqualified agencies carry no legal validity |
| Report date | Issued within 2 years | Reports older than 2 years — raw materials/processes have changed, invalid |
| 18 hazardous substances | Each item ≤ limit value | Exceeding the limit on any single item renders the whole non-compliant |
| Impact absorption | ≥ 35% | Below 35% fails to meet campus safety requirements |
| Odor Rating | ≤ Level 3 | Level 4–5 (noticeable odor) will draw complaints from teachers, students, and parents |
Common pitfall cases
1. Implied "Full-Range Certification"
Many manufacturers advertise that "the entire series passes GB 36246-2018," but in reality only the flagship model has been tested.The compliant practice is to require the manufacturer to issueCompletely identical to the purchased modelinspection report. AnchorCare's approach is to test each model separately; for campus settings the three main recommendations are the ANK2F four-grid, ANK4 four-leaf clover, and ANK5 giant, each with its own independent report.
2. Falsified/Photoshopped Reports
Genuine test reports can be verified on the testing agency's official website or the National Certification and Accreditation Information Public Service Platform (cx.cnca.cn).It is recommended to add a clause to the procurement contract: "Test reports must be traceable and verifiable; non-traceable reports are deemed a breach of contract."。
3. Substituting GB/T Recommended Standards
GB/T 19851 series, GB/T 24722, GB/T 22517, and similar standards are recommended national standards (marked with /T) and cannot replace the mandatory GB 36246-2018.Campus projects must have a GB 36246 report, with other reports as bonus points.
Real case study: Ningxia Xinglong Middle School, 5,500㎡
Ningxia Xinglong Middle School, delivered in 2018, is the flagship case for the ANK2F four-grid tile:
- Venue scale: 5,500㎡ (5 standard basketball courts + track connection zone)
- Model used: ANK2F four-grid (25×25cm, 160g, each tile has 4 reserved thermal expansion and contraction joints)
- Key challenge: Ningxia's 60°C+ winter-summer temperature swing causes ordinary assembled flooring to buckle easily
- Solution: four-grid structure + densified expansion-joint design + full GB 36246 testing
- In service to date: 8 years with no large-scale buckling, no detachment, only 2 localized lock replacements
The core priority when selecting campus venues: first check whether there is Physical properties (impact absorption / anti-slip) meet standards, then verify the GB 36246 report, and finally look at Installation Acceptance Is everything in place—if any link in the chain fails, the compliance of the entire project is compromised.
If buyers are unsure how to read a test report, they can refer to Understanding PP Sports Flooring Specifications。
FAQ
Is GB 36246-2018 a mandatory or recommended standard?
A mandatory national standard. The standard number starts with GB without /T, effective from November 1, 2019. Campus venues (synthetic-material surface layers for primary/secondary schools and kindergartens) must comply.
What Are the 18 Hazardous Substances?
Includes formaldehyde, benzene, toluene + xylene, TVOC, phenol, 3 polycyclic aromatic hydrocarbons (PAHs), 6 phthalate items, soluble lead/cadmium/chromium/mercury, 3-MCPD, etc. Key focus on plasticizers and heavy metals.
How long can a test report be reused?
There is no mandatory national regulation, but the industry convention is that it remains valid within 2 years. Reports older than 2 years may have become invalid due to raw-material formula adjustments or process improvements, so re-testing is the safer choice.
What is the difference between CNAS and CMA?
CMA is the national testing laboratory accreditation with domestic legal validity; CNAS is recognized by the China National Accreditation Service for Conformity Assessment and carries international mutual recognition. Compliant reports should carry both marks.
We're a community court, not a campus—do we need GB 36246?
The mandatory requirement applies only to synthetic-material surface layers in primary/secondary schools and kindergartens. Community courts have no mandatory requirement, but products passing GB 36246 have better environmental performance and are recommended as a procurement plus.
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