|
US$134.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7690.2-2013: Reinforcements -- Test method for yarns -- Part 2: Determination of twist
Status: Valid GB/T 7690.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7690.2-2013 | English | 134 |
Add to Cart
|
3 days [Need to translate]
|
Reinforcements -- Test method for yarns -- Part 2: Determination of twist
| Valid |
GB/T 7690.2-2013
|
| GB/T 7690.2-2001 | English | 199 |
Add to Cart
|
3 days [Need to translate]
|
Reinforcements -- Test method for yarns -- Part 2: Determination of twist
| Obsolete |
GB/T 7690.2-2001
|
| GB/T 7690.2-1987 | English | RFQ |
ASK
|
3 days [Need to translate]
|
Textile glass--Continuous filament yarns and staple fibre yarns--Determination of twist
| Obsolete |
GB/T 7690.2-1987
|
PDF similar to GB/T 7690.2-2013
Basic data | Standard ID | GB/T 7690.2-2013 (GB/T7690.2-2013) | | Description (Translated English) | Reinforcements -- Test method for yarns -- Part 2: Determination of twist | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q36 | | Classification of International Standard | 59.100.10 | | Word Count Estimation | 7,776 | | Older Standard (superseded by this standard) | GB/T 7690.2-2001 | | Quoted Standard | ISO 2-1973; ISO 291; ISO 1889 | | Adopted Standard | ISO 1890-2009, IDT | | Regulation (derived from) | National Standards Bulletin 2013 No. 23 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the glass fiber, carbon fiber, aramid fiber or other measurement method of reinforcing fiber yarn twist. This method is suitable for yarn (a twist), plied yarn or cable (double or multiple twisting). For plied yarns and cables, thi | GB/T 7690.2-2013: Reinforcements -- Test method for yarns -- Part 2: Determination of twist---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
.. Reinforcements Test method for yarns Part 2. Determination of twist
ICS 59.100.10
Q36
National Standards of People's Republic of China
Replacing GB/T 7690.2-2001
Test method for yarns reinforced
Part 2. Determination of twist
Part 2. Determinationoftwist
(ISO 1890.2009, Reinforcementyarns-Determinationoftwist, IDT)
Issued on. 2013-11-27
2014-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 7690 "Test method for yarns enhanced" is divided into six sections.
--- Part 1. Determination of linear density;
--- Part 2. Determination of twist;
--- Part 3. Glass fiber breaking force and elongation measurement;
--- Part 4. Determination of stiffness;
--- Part 5. Determination of glass fiber diameter of the fiber;
--- Part 6. Determination of twist balance index.
This section GB/T 27690 Part of.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB/T 7690.2-2001 "enhanced method for yarns Part 2. Determination of twist", and
GB/T 7690.2-2001 main differences are as follows.
--- In a broader range of applications, in addition to the original standard glass fiber coated carbon fiber and aramid fiber yarn, but also includes other
Reinforcing fibers (see Chapter 1);
--- Remove the "Reference Standards" GB/T 7690.1 and GB/T 18374, increase the ISO 2. 1973, ISO 291, and
ISO 1889 (see Chapter 2, Section 2 of the 2001 edition).
This section uses the translation method identical with ISO 1890.2009 "Enhanced yarn twist determination."
This part made the following editorial changes.
--- Consistent with the existing standard series, the standard name will be changed to "Enhanced Test method for yarns - Part 2. Twist measurement
set".
This standard normative international documents cited in the correspondence between the consistency of the following criteria.
--- GB/T 2918-1998 plastic sample conditioning and testing of the standard environment (ISO 291.1997, IDT);
--- GB/T 7690.1-2013 Reinforcements Test method for yarns - Part 1. Determination of linear density (ISO 1889.1997,
IDT).
This part of the National Standardization Technical Committee fiberglass (SAC/TC245) centralized.
This section is responsible for drafting. Nanjing Fiberglass Research and Design Institute Limited, the national glass fiber product quality supervision and inspection center.
The main drafters of this section. Xu Qi, Wang Yumei, Hao Zheng Tao, Chen Jianming, Fang Yunwei, Xu Min.
The previous versions of GB/T 7690.2-2001 release case.
--- GB/T 7690.2-1987.
Test method for yarns reinforced
Part 2. Determination of twist
1 Scope
GB/T 7690 provisions of this part of the glass fiber, carbon fiber, aramid fiber or other measurement method of reinforcing fiber yarn twist.
This method is suitable for yarn (a twisting), plied yarn or cable (double or multiple twisting). For plied yarns and cables, this method is usually
Only applicable to the determination of the final twist.
This method is suitable for winding yarn. If the sample is a warp beam (warp) or extracted from the fabric yarns, the test results only as a state
Instructions.
This method does not apply to fixed-length fiber products.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
ISO 2. 1973 and its products textile yarn twist notation (Textiles-Designationofthedirectionof
twistinyarnsandrelatedproducts)
ISO 291 environmental standard plastic sample conditioning and testing (Plastics-Standardatmospherefor
conditioningandtesting)
ISO 1889 Determination (Reinforcementyarns-Determinationoflineardensity) reinforcing yarn linear density
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Z twist Ztwist
S twist Stwist
Vertical Hold the yarn, if the fibers or filaments around its own axis formed a spiral to the middle portion of the letter Z is the same or S
Tilted, the corresponding called Z-twist or S-twist.
NOTE. See ISO 2. 1973 Chapter 2.
Principle 4
A sample of known length of the twist can be eliminated by untwisting, one end of which is equivalent to a fixed sample fixed, the other end of the rotation until the group
A sample of all units (yarn or monofilament) in parallel.
Record yarn twist and twist, even if the number of revolutions of the yarn length 1m eliminate twist required.
We must take into account the impact of lead on the way the test results when measuring.
When the yarn is tangential leads, twist does not change. If it is the end of the lead, the twist test values \u200b\u200baccording to the circumference of the spool and correction,
Increase or decrease depending on the yarn from the top or bottom of the package leads.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 7690.2-2013_English be delivered?Answer: Upon your order, we will start to translate GB/T 7690.2-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 7690.2-2013_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 7690.2-2013_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 7690.2-2013?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7690.2-2013 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|