GB 2697-1987 Technical conditions and classification of jute cable yarn and cord

This standard applies to machine-made jute cable yarn and twine (hereinafter referred to as cable yarn and twine) with jute and kenaf as the main raw materials. GB 2697-1987 Technical conditions and classification regulations for jute cable yarn and twine GB2697-1987 standard download decompression password: www.bzxz.net

Scope of application
National Standard of the People's Republic of China
Technical requirements and grading stipulation for jute cable yarns and threads
Jute yarns and threads for cables -Technical requirements and grading stipulation677.13.062
GB 2697-87
Replaces GB2697--81
This standard applies to machine-made jute cable yarns and threads (hereinafter referred to as cable yarns and threads) with jute and kenaf as the main raw materials. 2 Technical conditions
2.1 The technical conditions of cable yarns and threads shall be as specified in Table 1. Table 1
2924 tex (0.34 count)
Cable yarn
1949 tex (0.51 count)
Cable yarn
1462 tex (0.68 count)
Cable yarn
625 tex (1.6 count)
Cable yarn
625×3 tex (3.2 count/3)
Cable twine
312×3 tex (3.2 count/3)
Cable twine
Nominal fineness*
Anhydrous tex number (metric count)
2924 (0.34)
1949(0.51)
1462(0.68)
625(1.6）
1884 ~1963 (0.51 ~0.53)
942 ~ 982 (1.02 ~1.06)
Breaking strength, Newton (dry gram force)
Not less than
270 (27.5)
180 (18.4)
135(13.8)
190（19.4)
2.2 For varieties not included in 2.1, their technical conditions shall be formulated by both the supplier and the buyer with reference to this standard. 2.3 The standard moisture regain of cable yarn and line is 14%, which is only used for weight conversion. 3 Grading regulations
Twist number/10 cm
3.1 Cable hemp yarn and thread are divided into genuine and secondary products. Their grades are evaluated according to the lowest of the test results of 3.3 physical indicators and 3.4 appearance defects of this standard.
The nominal fineness of cable hemp thread is determined by each manufacturer according to the actual twist shrinkage rate by the following formula. Nominal fineness of cable hemp thread (special) = _Nominal fineness of single yarn of cable hemp thread (special) × number of strands (1 twist shrinkage rate)
Approved by the Ministry of Textile Industry of the People's Republic of China on November 9, 1987, implemented in 1988-0401
GB 269787
3.2 When grading cable hemp yarn and thread, the physical indicators are in batches, and the appearance defects are in twists (balls, barrels). 3.3 The physical indicators of cable hemp yarn are graded according to the provisions of Table 2. Table 2
Fineness deviation rate
Fineness unevenness
10 cm twist deviation
Breaking strength
Appearance defects of cable yarn and wire shall be classified according to the provisions of Table 3. 3.4
Defect degree
Authentic product allowable deviation
Not more than 9%Www.bzxZ.net
Not more than 8.5%
Not less than the technical conditions
Not more than 1.8%
Not more than 1.5%
Average number of authentic products per 100 meters
Thick diameter is more than 2.5 times the original diameterThin diameter is less than 0.5 times the original diameter Partial knot of two yarns
Two strands missing
One strand missing and length not exceeding 1 meter
Two strands more
One strand more and length not exceeding 1 meter
Knot of two strands
Not allowed
Not allowed
GB269787
Note: () The length of thick (thin) knot is one every 10 cm (less than 10 cm is not counted). ② For the reference diameter of cable yarn, see Appendix A. ③ If the knot of cable yarn is tied with single yarn, and the distance between knots is more than 5 cm, it is not considered as a knot. ④ Cable yarn and thread are tied with woven knots, and the knots should be small and tight. 19
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