GOST 7681-80

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  ГОСТ 7681-80

GOST 7681−80 rope double lay multi-strand type LK-O construction 18х7 (1+6)+1 O. S. Assortment (with Amendments No. 1, 2)

GOST 7681−80

The Group Of 75

INTERSTATE STANDARD
ROPE DOUBLE LAY multi-strand TYPE LK-O CONSTRUCTION 18х7 (1+6)+1 O. S.
Assortment
Polystranded Two lay rope of LK-O construction 18х7 (1+6)+1 O. S. Dimensions

ISS 77.140.65

OKP 12 5100, 12 5200

Date of introduction 1982−01−01

Resolution of the USSR State Committee for standards of 23 April 1980, N 1836 date of introduction is established 01.01.82

The expiration time limit is removed by the Resolution of Gosstandart from 22.11.91 N 1790

REPLACE GOST 7681−66

Edition (may 2011) with Amendments No. 1, 2 approved in November 1986, November 1991 (IUS 2−87, 2−92)

1. This standard applies to steel ropes double stranding multi-strand with a linear touch the wires in the strands type LK-O with one organic core.

2. The ropes are classified by signs

for the purpose:

freight — G;

mechanical properties grades: VC, V, 1;

by coating the surface of wire rope:

from wire without coating,

galvanized wire depending on the surface density of zinc: C, W, coolant;

the direction of lay of rope:

right

left — L,

the combination of the directions of lay of the rope elements:

Phillips,

unilateral — O;

by way of lay:

prosrochena — N,

unwinding;

according to the degree of cruciotti:

spinning,

makrushina — MK;

for precision manufacturing:

normal

high — T;

according to the degree of balance:

ratowanie — R,

neritani.

Examples of symbols

Multi-strand rope with a diameter of 20.5 mm, cargo destination, from wire without coating, grade I, unilateral left lay, Malorossiya, prescripcialis, Neradovsky, high precision, marking the group’s 1960 N/mm(200 kgf/mm):

Rope 20,5-G-I-L-O-MK-N-T-1960 GOST 7681−80

The same diameter of 14.0 mm, a cargo destination, brand, galvanized by the group W, right-hand cross-lay, spinning, prescripcialis, Neradovsky, high precision, marking the group 1770 N/mm(180 kgf/mm):

Rope 14-G-V-W-N-T-1770 GOST 7681−80

3. The diameter of rope and basic parameters shall be as specified in the table.

Continued

Continued

Notes:

1. The ropes, breaking strength of which is given to the left of the bold line are made of wire without coating and galvanized. Ropes of galvanized wire groups W and coolant diameter 31.5 mm marking groups 1570 N/mm(160 kgf/mm) and 1670 N/mm(170 kgf/mm), 22,0−31,0 mm marking group 1770 N/mm(180 kgf/mm), 12,5−17,5 mm marking group 1960 N/mm(200 kgf/mm) are made by agreement between manufacturer and consumer.

The ropes, breaking strength of which is given to the right of the bold line are made of wire without coating. Allowed in coordination with the consumer manufacturing of ropes, galvanized wire.

2. The diameters of the ropes over 10mm rounded to whole numbers or to 0.5 mm.


2, 3. (Changed edition, Rev. N 1, 2).

4. Technical requirements, acceptance rules, test methods, packaging, marking, transportation and storage GOST 3241−91.



The electronic text of the document
prepared by JSC «Code» and checked by:
the official publication of the
Steel ropes. Assortment: Sat.Standards. -
M.: STANDARTINFORM, 2011