GB/T 13833-2022 in English
VALIDFiber flax—Flax stalk and dew-retting flax stalk
- Issued on:2022-10-12
- Implemented on:2023-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | GB/T 13833-2022 |
| Document status: | VALID |
| Title in English: | Fiber flax—Flax stalk and dew-retting flax stalk |
| Title in Chinese: | 纤维用亚麻 原茎和雨露干茎 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2022-10-12 |
| Implemented on: | 2023-05-01 |
| Superseding: |
GB/T 13833-2002 stem for fibre flax
GB/T 13834-2008 Dried-stem of dew retting flax for fibre type |
| ICS Classification: | 59.060.10-Natural fibres |
| Chinese Classification: | W30-Ramie textile in general |
| Professional Classification: | GB-National Standard |
| Related Keywords: | flax flax stalk
flax raw stem standard dew-retting flax stalk introduction technical evolution stem standard standard stem |
| Related Topics: | flax
stem table stem stem system instrument stem fibers in primary Stem Microfibrils j1 stem GBT13833 GB/T 13833-2002 GB/T 13833-2022 Dried stalks of flax rain dew for fiber Flax raw stems for fiber |
《GB/T 13833-2022纤维用亚麻 原茎和雨露干茎》由TC513（全国纤维标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Technical evolution of the new national standard
Background of standard integration
The 2022 version of the standard realizes the merger of two standards, and implements technical system reconstruction for the 2002 version of the flax raw stem standard and the 2008 version of the rain and dew dried stem standard. The main technological innovations include: reconstruction of measurement parameters of steel tape measure and vernier caliper, optimization of sloppy calculation models, and resetting of quality grade evaluation dimensions.
| Parameter system | 2002/2008 version | 2022 version | Evolution characteristics |
|---|---|---|---|
| Quality grade index | Five equal divisions + long hemp rate | Five equal divisions + standard stem rate | Strength orientation transformed into appearance + performance composite index |
| Process length requirement | Integer value critical* | Gradient structure control | Measured parameters allow +3% tolerance zone |
| Sloppy formula | Ratio calculation | Multiplication coupling calculation | Modified preliminary sorting anti-interference model |
Key quality indicator system
Binary grading regulation
The new standard constructs a double helix system of original stem-dry stem indicators. The comparison in the following table shows the differences in 4 core parameters to achieve traceability design of production process:
| Test items | Original stem requirements | Dry stem requirements | Control factors |
|---|---|---|---|
| Standard color rate | ≥60% (fifth grade) | ≥80% (first grade) | Implementation degree of surface oxidation inhibition technology |
| Process lower limit | 400mm | 600mm | Mandatory standard for fiber circulation outer diameter |
| Resurge Cv value | ≤14.0% | Equal limit | Substantial unification of humidity control chain |
Optimization of inspection methods
Sampling and testing procedures
The physical parameter test module sets a three-level correction strategy: ①Sample extraction procedure:Layered stacking (diagonal three-point method) + dynamic time series sampling
Quality risk management
The threshold distribution curve of abnormal stem pesticide residues is strictly limited, and the K medium index is set according to QS/HT32201-2022 and shall not exceed 120% of the rated parameter. The error correction coefficient is determined by the parallel verification procedure of double standards (ASTM D7127/D6567).
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