GOST 3070-88
GOST 3070−88 steel rope double twist rope, type TK construction 6х19 (1+6+12)+1 O. S. Assortment (Change No. 1)
GOST 3070−88
The Group Of 75
INTERSTATE STANDARD
STEEL ROPE DOUBLE twist rope, TYPE TK CONSTRUCTION 6х19 (1+6+12)+1 O. S.
Assortment
Two lay steel mount type TK construction 6х19 (1+6+12)+1 O. S. Dimensions
ISS 77.140.65
OKP 12 5100, 12 5200
Date of introduction 1990−07−01
APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from
The expiration time limit is removed by the Resolution of Gosstandart from
REPLACE GOST 3070−74
Edition (may 2011) Change 1, approved in April 1992 (IUS 7−92)
1. This standard applies to steel double-lay ropes with point touch the wires in the strands of type TC with organic core.
The standard does not apply to the ropes used on the cranes.
2. The ropes are divided:
for the purpose:
freight — G;
mechanical properties:
mark VC,
mark,
mark 1;
by coating the surface of wire rope:
from wire without coating,
galvanized wire depending on the surface density of zinc: C, W;
the direction of lay of rope:
right
left — L;
the combination of the directions of lay of the rope elements:
cross;
by way of lay:
unwinding,
prosrochena — N;
for precision manufacturing:
normal
high — T;
according to the degree of balance:
ratowanie — R,
neritani.
Examples of symbols
Rope with a diameter of 13.0 mm, cargo destination, grade 1, from wire without coating, left-hand cross-lay, prescripcialis, Neradovsky, normal accuracy, marking the group 1770 N/mm(180 kgf/mm
):
The rope 13-G-1-L-N-1770 GOST 3070−88
Rope diameter 6,5 mm, cargo destination, brand, galvanized by group C, right-hand cross-lay, prescripcialis, Neradovsky, high precision, marking group 1860 N/mm(190 kgf/mm
):
Rope 6,5-G-b-C-N-T-1860 GOST 3070−88
3. The diameter of rope and basic parameters shall be as specified in the table.
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. The rope galvanized wire group W with a diameter of 13.0 mm marking group 1960 N/mm(200 kgf/mm
) are made by agreement between manufacturer and consumer.
The ropes, breaking strength of which is indicated to the right of the bold line made from wire without coating, in agreement with the consumer ropes made of galvanized wire.
2. The diameters of the ropes over 10mm rounded to whole numbers or to 0.5 mm.
3. The diameter of the rope designed to ensure the gap between the strands.
2, 3. (Changed edition, Rev. N 1).
4. Technical requirements, acceptance rules, test methods, marking, packaging, transportation and storage — by 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
