GB/T 37805-2019 in English
VALIDBamboo winding composite pipe
- Issued on:2019-08-30
- Implemented on:2020-03-01
- File Format:PDF
- Delivery:Within 1 day
$381.00
| Standard No: | GB/T 37805-2019 |
| Document status: | VALID |
| Title in English: | Bamboo winding composite pipe |
| Title in Chinese: | 竹缠绕复合管 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2019-08-30 |
| Implemented on: | 2020-03-01 |
| ICS Classification: | 79.060.99-Other wood-based panels |
| Chinese Classification: | B70-Artificial board |
| Professional Classification: | GB-National Standard |
| Related Keywords: | structural requirements bamboo
national bamboo first bamboo composite pipe composite pipe introduction standard overview |
| Related Topics: | twine
High voltage winding Composite pipe bamboo GBT37805 GB/T 37805-2019 Pipe winder Fin tube |
《GB/T 37805-2019竹缠绕复合管》由TC263（全国竹藤标准化技术委员会）归口，主管部门为国家林业和草原局。
Introduction
Standard Overview and Technical Background
GB/T37805-2019 is my country's first mandatory national standard for bamboo-wrapped composite pipes, proposed by the State Forestry and Grassland Administration and managed by the National Bamboo and Rattan Standardization Technical Committee. The standard was issued on August 30, 2019 and officially implemented on March 1, 2020, marking the standardized application of bamboo-based composite materials in the field of pipeline engineering.
Core parameters and technical indicators
| Key indicators | Technical requirements | Test methods |
|---|---|---|
| Nominal inner diameter | 150-3000mm | Inner diameter micrometer measurement |
| Pressure level | ≤1.6MPa | Water pressure leakage test |
| Ring stiffness | 5000-20000N/m² | GB/T5352 |
| Operating temperature | -40℃~80℃ | Hot and cold alternating test |
Material and structural requirements
Bamboo wrapped composite pipe adopts a three-layer structure design:
- Inner lining layer: Resin insoluble content ≥92%
- Structural layer: Bamboo tensile strength ≥60MPa
- Outer protective layer: Surface water absorption ≤3%
Typical case: DN500 pipe under 0.6MPa pressure, the minimum circumferential tensile strength reaches 600kN/m (see Table 9)
Technical innovations
- The first bamboo circumferential/axial winding process (Figure 1)
- Developed a special socket structure (Table 7)
- Established a dual-level test method for flexibility (Table 11)
- Introduced a blank test method to accurately determine the resin content (Appendix A)
Engineering application suggestions
Special attention should be paid during implementation:
- Pipes should not be stacked in more than 2 layers (Table 12)
- Dual-point flexible lifting is used during transportation
- Long-term deflection after installation ≤3%
- The connection length of the reducer must meet the requirements of Table D.5
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 26899-2022 in English
Structural glued laminated timber
2022-10-12 -
GB/T 28998-2012 in English
Multilaminar decorative lumber
2012-12-31 -
GB/T 35821-2018 in English
Determination of biomass content in biomass/plastic composites
2018-02-06 -
GB/T 36872-2018 in English
Code of glued laminated timber production
2018-09-17
