SC/T 4041-2018 in English
VALIDGeneral technical specifications for HDPE offshore cage
- Issued on:2018-12-19
- Implemented on:2019-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | SC/T 4041-2018 |
| Document status: | VALID |
| Title in English: | General technical specifications for HDPE offshore cage |
| Title in Chinese: | 高密度聚乙烯框架深水网箱通用技术要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2018-12-19 |
| Implemented on: | 2019-06-01 |
| Professional Classification: | SC-Aquaculture |
| Related Keywords: | technical specifications
technical requirements technical parameters material specifications standard marking system specifications |
| Related Topics: | high density
sc/t 4024 deep water Density box pressurization deep box High-density polyethylene High Density Polyethylene Fusion Han Case Density Mold Steel Cryogenic Box Technology Mold Steel Cryogenic Box Technology Mold Steel Cryogenic Box Technology Is HDPE fireproof? AS4041 Medical high density polyethylene reference deep sequencing technology |
Introduction
Analysis of the core content of the standard
This standard specifies the technical requirements for the full life cycle of high-density polyethylene frame deep-water cages, with the key points including:
- Material specifications: HDPE pipes must comply with PE80 grade material standards
- Structural parameters: Frame circumference deviation ≤4.5%, box height includes anti-jump net design
- Mechanical properties: The difference between the buoyancy of the main floating tube and the weight of the cage in water is ≥5kN
Comparison of key technical indicators
| Projects | Floating cages | Lifting cages | Submerged cages |
|---|---|---|---|
| Applicable water depth | 15-50m | 30-100m | ＞50m |
| Frame specifications | Φ280mm×16.6mm | Φ315mm×18.7mm | Φ355mm×21.2mm |
| Anchoring system | Polypropylene rope | Ultra-high molecular weight polyethylene rope | Combined anchor chain |
Key points for implementation of the standard
Marking system specifications
Take the sample mark HDPE-PEN-FC-50.0m×6.0m+0.8m as an example:
- Material code: HDPE frame + polyethylene net
- Structural parameters: circumference 50m×height 6m+anti-jump net 0.8m
- Buoyancy requirements: need to be verified by calculation using formula (3)
Key links of inspection
Special attention should be paid to type inspection:
- The mesh breaking strength test shall be carried out in accordance with GB/T 4925
- The sampling length of the floating tube shall be strictly controlled within (0.2±0.005)m
- The breaking load of the anchor chain shall meet the requirements of GB/T 549
Technical evolution analysis
Compared with the early SC/T 4025 standard, this version has the following major innovations:
- Added ultra-high molecular weight polyethylene net material specification
- Cleared the technical parameters of lifting cages
- Introduced buoyancy theory calculation method (Formula 3)
Typical application case: Shandong Peninsula aquaculture enterprises use this standard cage, the wind and wave resistance capacity is increased by 40%, and the service life of the net is extended to 5 years.
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