Compliance · 2026-02-10 · 9分钟
Understanding ISO 25983:2024 for Bamboo Winding Composite Pipe
Explains the key updates in ISO 25983:2024 including scope expansion, higher resin-content requirements, and new UV aging tests.
ISO 25983 is the first international standard for bamboo winding composite pipe, updated in 2024. It covers classification, materials, dimensions, mechanical properties, and test methods — forming the basis for engineering design and procurement acceptance.
Key updates in the 2024 edition
| Section | 2022 edition | 2024 update |
|---|---|---|
| Scope | DN150–DN2000 | Added DN100–DN3000 |
| Pressure class | PN0.6–PN2.5 | Added PN4.0 high-pressure series |
| Ring stiffness | SN1250–SN10000 | Added SN16000 |
| Resin content | ≥20% | ≥25% (higher durability) |
| Water absorption | ≤5% | ≤3% (stricter) |
| Aging test | Not required | Added 1,000 h UV aging test |
| Connection types | Socket-and-gasket | Added flange and electrofusion connections |
Impact on engineering and procurement
- Resin content increased from ≥20% to ≥25%: product durability improves but cost rises about 8–12%.
- UV aging test added: pipe intended for outdoor exposure must pass this test.
- Water absorption tightened from ≤5% to ≤3%: demands better resin impregnation in production.
- DN3000 large-diameter series: expands applications in drainage and marine engineering.
- PN4.0 high-pressure series: can be used for medium-pressure gas transmission with additional safety certification.
Procurement acceptance checklist
- Check product marking: should include DN, PN, SN, batch number, and ISO 25983 identification.
- Inspect appearance: no bubbles, no delamination, no cracks, uniform color.
- Sampling tests: ring stiffness (≥ nominal), Barcol hardness (≥40), hydrostatic test (1.5×PN for 10 min).
- Request reports: factory inspection report, third-party type-test report.
- Confirm 2024 edition compliance: request supplier declaration of ISO 25983:2024 conformity.
Need technical guidance on ISO 25983:2024? We can provide standard interpretation, product selection, and acceptance support.
FAQ
Is ISO 25983 mandatory?
No. ISO standards are voluntary, but many national project tenders require compliance with the standard in their specifications.
Can products certified to the 2022 edition still be used?
Yes, but it is advisable to specify the edition in contracts. New projects are recommended to adopt the 2024 edition.
How can I verify a supplier conforms to ISO 25983?
Request a third-party type-test report from an accredited lab such as SGS or Intertek. The report should include the standard number and test items referenced.