GOST 2715-75

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  ГОСТ 2715-75

GOST 2715−75 Mesh metal wire. The types, basic parameters and dimensions (with Change No. 1)

GOST 2715−75
Group B76

INTERSTATE STANDARD

MESH METAL WIRE

The types, basic parameters and dimensions

Metal wire screens. Types, basic parameters and dimensions

ISS 77.140.65
OKP 12 0100

Date of introduction 1977−01−01

INFORMATION DATA

1. DEVELOPED by the research Institute of the hardware industry (NIIMETIZ)

INTRODUCED by the Ministry of ferrous metallurgy of the USSR

2. APPROVED AND promulgated by the Decree of the State Committee of standards of Ministerial Council of the USSR from 24.12.75 N 3986

3. REPLACE GOST 2715−44

4. Limitation of actions taken by Protocol No. 7−95 Interstate Council for standardization, Metrology and certification (I & C N 11−95)

5. EDITION with Change No. 1, approved in June 1986 (ICS 9−86)


This standard applies to metal wire mesh and establishes the types, basic parameters and limits.

1. TYPES

1.1. The method of manufacture of the mesh are divided into:

— woven — formed cross-weave wires (strands) of the base (wires running along the mesh) with the weft wires (wires perpendicular to the mesh) (Fig.1);

Damn.1. Woven

Damn.1

— woven — round or flat spirals formed by interweaving subsequent spiral in the previous (Fig.2);

Damn.2. Braided

Damn.2

— twisted wire is formed by alternately twisting each wire with one of the two nearby (Fig.3);

Damn.3. Twisted

Damn.3

— from the grate slit shaped cross-section, assembled from separate wire grate shaped cross section, fastened together with the connecting rods, placed at a certain distance from each other (Fig.4);

Damn.4. Slit

Damn.4

— welded — formed from wires arranged in two mutually perpendicular directions and welded at their intersections (Fig.5);

Damn.5. Welded

Damn.5

— the national team of pre-deformed wire formed cross-weave smooth or pre-deformed wires (strands) with pre-deformed wires of weft (Fig.6);

Damn. 6. Team

Damn.6

1.2. The shape of the cells in the world grid are divided as follows:

— with square cells;

— with rectangular cells;

— rhombic cells;

— with hexagonal cells;

— trapezoidal cells.

— zero cells.

1.3. The size of cells in light mesh is divided into:

1.4. On the living section of the grid are divided as follows:

— with a small living section — up to 25% of the total area of the grid;

— living with normal section from 25 to 50% «""

— with a large living section — «50 «75% «""

— with large living section, and over 75% «" «.

The living section of the grid is determined by the ratio of the area of cells in light to the entire area of the mesh expressed in percentage.

1.4.1. The living section of woven mesh, welded team and of a pre-deformed wire (a) percentage calculated by the formula

,

where is the cell size in light between the wires basis, mm;

 — cell size in light between the weft wires, mm;

the diameter of the warp wires, mm;

 — the diameter of the weft wires.

1.4.2. The living section of the braided mesh () in percent is calculated by the formula

,

where is the cell size in light, mm;

 — wire diameter, mm;

 — corner cell of the diamond castle.

1.4.3. The living section twisted wire mesh () in percent is calculated by the formula

,

where is the cell size in light, mm;

 — wire diameter, mm.

1.4.4. The living section of the slit mesh of the grate shaped cross-section () in percent is calculated by the formula

,

where the width of cracks, mm;

 — the distance between the axes of the wire grate, mm.

 — external diameter of the loop consisting of the diameter of the coupling studs, and the two diameters of the original wire, mm;

 — distance between axes of the connecting pins, mm.

1.5. On metals and alloys used wire mesh divided:

— carbon (low carbon, medium carbon and high carbon) steel;

— high alloyed steel;

— from nonferrous metals and alloys.

1.6. As of metal used wire mesh divided:

— of hard-drawn wire,

— annealed wire.

1.7. The shape of the cross-section of the wire mesh are divided:

— from a round wire;

from square wire;

from trapezoidal wire;

— of the T-shaped wire;

is of flat wire;

— wire periodic profile.

1.8. In appearance the surface of the applied wire mesh divided:

— bright, steel wire,

— dark steel wire,

from etched steel wire,

— made of galvanized steel wire,

— from tin-plated steel wire,

— from wire, plastic-coated.

1.9. In appearance of the surface mesh is divided into:

— uncovered,

— covered in canvas.

1.9.1. Mesh covered in cloth, divided into:

— galvanized painting,

— tinned, in cloth,

— painted canvas

— covered with plastic.

2. BASIC PARAMETERS AND DIMENSIONS

2.1. The basic parameters and limit the size of nets shall be as specified in the table.

(Changed edition, Rev. N 1).