GOST 3090-73

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	GOST 3090-73 BEARING ROPE OF CLOSED CONSTRUCTION WITH SINGLE LAYER OF Z-SHAPED WIRE AND WITH  TK CORE TYPE
Diameter, mm	Round wire		Z-shaped wire			Sectional area of all wires,  mm2	Weight of 1000m lubricated rope, kg	Marking group, N/mm2 (kgf/mm2)			Maximum rope length, m	Zinc covering Group
	Diameter, mm	Quantity, pcs.	Height, mm	Quantity, pcs.	Projected sectional area of all wires, mm2			1180 (120)	1470 (150)	1670 (170)		С	Ж
								Total breaking effort of all wires in the rope, N (not less than)
30,5	4,10	19	5,00	19	19,25	616,69	5249,8	724500	906000	1020000	1500	+	+
32,0	4.40	19	<<	20	<<	673,90	5737,1	792000	989500	1120000	<<	+	+
34,0	3,40	37	<<	21	<<	740,18	6300,6	870000	1085000	1225000	<<	+	+
35,5	3,60	37	<<	22	<<	800,12	6810.3	940500	1175000	1330000	<<	+	+

NOTES:

1. Ropes are produced according to:
• Wire    mechanical properties:   of BK mark - high quality; of B mark    - increased quality, of mark 1 - normal quality;     
• Wire surface coating: without coating, with zinc coating;
• Lay direction: right and left (Л);
• Lay type: untwisted (H), twisted;
• Precision of manufacturing: normal, increased (T).
2. Ropes of galvanized wire with C covering group of marking groups 1 180  (120), 1270(130) spinning (P) are made serially; of higher marking groups are produced on agreement.
3. Ropes with marking group 1470 (150) and higher as long as wire ropes with a zinc covering on group Ж are made upon agreement;
4. The minimal rope length is 200 m.
5. Recommended applications: on pendant rope roads and cables - cranes as bearing-ropes,—walking excavators   and at  various technical constructions as guys, in mines - as guide ropes.