GB 2698-1987 Technical conditions and classification regulations for jute steel wire rope core yarn

This standard applies to machine-made jute steel wire rope core yarn (hereinafter referred to as steel wire rope core yarn) with jute and kenaf as the main raw materials. GB 2698-1987 Technical conditions and classification regulations for jute steel wire rope core yarn GB2698-1987 standard download decompression password: www.bzxz.net

Applicable scope National Standard of the People's Republic of China Technical requirements and grading stipulation for jute yarns for wire rope cores UDC 677.13.062 GB 2698-87 Replaces GB2698-81 This standard applies to machine-made jute yarns for wire rope cores (hereinafter referred to as wire rope core yarns) with jute and kenaf as the main raw materials. 2 Technical conditions 2.1 The technical conditions for wire rope core yarns shall be as specified in Table 1. Table 1
926 tex (1.08 ns)
Wire rope core yarn
667 tex (1.5 ns)www.bzxz.net
Wire rope core yarn
613 tex (1.63 ns)
Wire rope core yarn
463 tex (2.16 ns)
Wire rope core yarn
417 tex (2.40 ns)
Wire rope core yarn
Nominal fineness
Anhydrous tex number (metric count)
926 (1.08)
667 (1.50)
613(1.63)
463(2.16)
417（2.40）
Breaking strength, Newton (kgf)
Not less than
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 steel wire rope core yarn is 14%, which is only used for weight conversion. 3 Grading regulations
Number of twists/10 cm
3.1 Steel wire rope core yarn is divided into genuine and secondary products. Its grade is evaluated according to the lowest one of the inspection results of physical indicators in 3.3 and appearance defects in 3.4 of this standard.
3.2 When grading steel wire rope core yarn, physical indicators are in batches and appearance defects are in twists (balls, tubes) as units. Approved by the Ministry of Textile Industry of the People's Republic of China in 1987-1109 and implemented on April 1, 1988
GB 2698-87
3.3 The physical indicators of steel wire rope core yarn shall be classified according to the provisions of Table 2. Table 2
Fineness deviation rate
Fineness unevenness
10 cm twist deviation
Breaking strength
Impurity rate
The appearance defects of steel wire rope core yarn shall be classified according to the provisions of Table 3. Table 3
The thick part with a diameter of more than 2.5 times the original diameter The thin part with a diameter of less than 0.5 times the original diameter The knot of two yarns
Note: ① The length of the thick (thin) section is one place for every 10 cm (less than 10 cm is not counted). ② The reference diameter of steel wire rope core yarn is shown in Appendix A. ③ The steel wire rope core yarn is tied with a woven knot, and the knot should be small and tight. 22
Authentic product allowable deviation
Not more than 8.5%
Not less than the technical conditions
Not more than 1.5%
Average number of authentic products per 100 meters
The reference diameter of the hemp yarn for steel wire rope core is shown in the following table: Nominal fineness
Waterless special number
Reference diameter
GB 269887
Appendix A
Reference diameter of hemp yarn for steel wire rope core
(Supplement)
Nominal fineness
Waterless special number
Additional remarks:
This standard is drafted by Zhejiang Hemp Spinning Factory. Reference diameter
Nominal fineness
Waterless special number
Reference diameter
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