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This page provides
links to several documents containing technical reference information on the subject of
screening, woven wire cloth, woven wire mesh, wire
weaving, North American European, Asian and International weaving standards,
materials utilized for weaving, styles, types and
methods of weaving and
synthetic screening surfaces. |
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The
Complete Wire Cloth
Glossary of Terms |
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A comprehensive
glossary of wire cloth, wire mesh, screening and weaving terms. |
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This section also available in
printable
pages.
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Specification
Selection Guide |
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A wire mesh specification
is a precise set of dimensional instructions that
identifies the component's by name, the wire description
provided as dimensional, (wire diameter) the basic
type of material with each type having unique chemical
and physical characteristics
consists of wires arranged in either a square pattern
or a rectangular pattern, which are physically
held in position by the weave structure,
specifically the indentations (crimps) at each
intersection of the particular weave style.
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Mesh Comparison 'Look Up' Tables
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Mesh Count Cross Reference |
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Screen Opening Mesh
Locator |
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Popular mesh
specifications organized by screen opening in descending order
from large (0.446") to
small (0.0010"). |
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Printable Mesh Locator Tables |
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Popular
Applications |
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EMI Electromagnetic
Iinterference |
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Electromagnetic interference is a disturbance that affects an
electrical circuit due to either electromagnetic induction or electromagnetic
radiation emitted from an external source.
The disturbance may obstruct, degrade or
reduce the effective performance of the circuit. |
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RFI/EMI Screen Room Shielding |
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A Faraday cage
(or shield) is an enclosure formed by
a woven wire mesh of
conducting material. Such an enclosure blocks
out external static
electric fields. Faraday cages are named after Michael Faraday,
the inventor. |
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Municipal Water Storage Tank Ventilation |
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Above
ground storage tanks must be ventilated to allow
inward and outward air flow to compensate for the
discharge and intake of water according to the
supply demands as required by the municipal
consumption of water. The screens must allow
substantial air flow to prevent storage tank
cavitations. Another important function of water
tank vent screens is to prevent entry of insects and
air borne debris into the drinking water supply. |
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National Park
Service - Rodent Exclusion |
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Wildlife Damage
Management
Rodent Exclusion Techniques: A Training Guide for
National Park Service Employees |
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No See Ums,
Small Opening Insect Screen |
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Bite prevention is the
preferred way of dealing with these pests. Your
home or business can be protected with a special screening
which is available to exclude these flies. Most biting midges can pass
through a 18 x 16 or 16 x 16
mesh insect screen, so a smaller
opening size (higher
mesh count) is required to prevent entry. |
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Termite Barrier Screening System |
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Stainless steel woven wire
mesh is a safe long term
solution for the prevention of Subterranean Termite and Insect entry.
The screen provides a physical barrier the insects can not fit through,
without containing any chemicals or toxic substances. |
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Wire Cloth Product Applications |
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Filtration |
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Flow Rate Data - Particle Retention |
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Tables provide micronic retention
standards, wire cloth screen thickness, weights and flow rate comparison data for
water, oil,
fuel and air. |
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PDW
Filter Cloth Flow Rate Data |
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TDW
Filter Cloth Flow Rate Data |
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Regenerative Particulate Filter Development |
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NASA CR 115505,
May 1972 PDF Document |
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Micronic Filter Specifications |
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Screening - Sifting - Sizing - Sorting |
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Standard
Sieve Series for Woven Wire Cloth |
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Standard
designations correspond to the values for test sieve apertures as recommended by the
International Standards Organization (ISO) |
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NIST / ASTM Sieve Screen Tolerances |
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Specifications of
permissible working (manufacturing) tolerances that
apply to Woven Wire Sieve Screens (Standard
Sieve Series) adopted by U.S. Bureau of
Standards & American Society for Testing Materials.
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The National Institute
of Standards and Technology (NIST), known between
1901 and 1988 as the National Bureau of Standards (NBS),
is a measurement standards laboratory
which is a non-regulatory agency of the
United States
Department of Commerce |
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Vibrating Decks, Shaker Screens |
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Vibrating Screen Installation & Maintenance |
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Valuable
tips to reduce operating costs by maximizing screen life. |
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Vibrating Screen Square Opening Specifications |
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Screen
Openings suitable for dry screening applications. |
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Vibrating Screen Slotted Opening Specifications |
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Screening
Tables for dry and wet screening applications. |
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Screen Opening Mesh
Locator |
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Popular mesh
specifications organized by screen opening in descending order
from large (0.446") to
small (0.0010"). |
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Printable Mesh Locator Tables |
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Particle Size /
Screen Mesh Comparison Table |
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Screen Edge Hemming |
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Hems are commonly used to
re-enforce the edges of wire mesh,
hide imperfections and provide a safer
(smother) edge to handle.
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Screen
Edge Treatments and Hook Strips |
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Screens
for classifying, sizing, straining, sieving, are typically secured by clamping rails that
apply tension across the screening surface. |
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Screen Specification
Selection Tips |
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Assistance with
selection of woven wire cloth screen specifications. |
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Square Mesh |
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Square Mesh is woven in the same
Mesh Count (number of wires per linear inch or
millimeters) running in both directions. Warp is the
length of the roll, Weft is the width across the
roll. |
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Wire Cloth specifications always
refer to the Warp Mesh Count first, followed by the
Weft mesh count second |
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Square Mesh Tables |
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The Square mesh tables list a
standard meshes ranging from 2 mesh through and including
100. The tables
provide the complete range of wire diameters suitable for weaving each
mesh count indicated. |
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Many
of these specifications are not considered as standard due to the limited
popularity and are not produced although all the mesh count/wire
diameter combinations are possible to weave and therefore are available by special
(custom weave) order. |
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Square
Mesh Stock Specifications |
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This table
lists all the popular stocked specifications and
provides detailed at-a-glance information for each
Mesh Count/Wire Diameter combination, the Industry
Product Classification (Group) for each
specification is identified and hyperlinked to the
Product Group Page in addition to hyperlinked
Product Data Sheets. |
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Woven Wire Product Specifications |
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Screen Technology Group, Inc. (STG)
has developed a universally recognizable system of
Woven Wire Product Specifications that any person
having only the most basic understanding of the wire
weaving industry and woven wire products can easily
interpret and cross reference with their own method
of woven wire specifications and/or part numbering
systems. |
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Unfortunately several
manufacturers (wire weavers) companies
engaged in marketing and distribution of Woven Wire
Products have developed their own system of
specifying the products and the part numbers
utilized to represent their products in a unique
fashion in order to suggest exclusivity and thus
limit fair competition by competitors who produce identical products. |
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Guide to Understanding 'Woven Wire
Product Specifications' |
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The
word specification is defined as "to state
explicitly or in detail" or "to be specific".
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To simplify the data storage and
allow quick accessibility to the vast quantity of
Specifications, many of the specifications have been
sorted into Product Groups by relevance, basic
characteristics, or the type of applications they
may be best suited for.
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Each type (or class) of
Specification Group is accessible from the Woven
Wire Cloth
Products page. Each product specification group
is provided with a brief description of the group
and a link that will deliver you to the Product
Specification Group page |
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Screen Technology Group has
published over 1,200 catalog products, all of which
are well described in precise all inclusive
technical details, among our extensive library of 28
Primary Product Specification Groups. These groups
are all accessible from our
Wire
Cloth Products page. |
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Vibrating Screen Installation & Maintenance |
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Valuable
tips to reduce operating costs by maximizing screen life. |
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Vibrating Screen Square Opening Specifications |
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Screen
Openings suitable for dry screening applications. |
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Vibrating Screen Slotted Opening Specifications |
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Screening
Tables for dry and wet screening applications. |
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Weaving Materials |
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Descriptions, Material Quality
Standards, and Technical Information |
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International Weaving Wire Standards |
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US Wire For
Weaving and Woven Wire Standards |
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Popular Weaving Materials |
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The materials
commonly utilized in wire cloth weaving are identified. |
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Corrosion
Resistance of Various Weaving Materials |
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Basic
corrosion resistance of materials utilized in wire cloth weaving. |
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Corrosion Data-Stainless
Steel |
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Table
provides detailed comparisons of the commonly
utilized grades of stainless steel against chemicals
and substances ranging from A thru Z. |
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Galvanic
Corrosion Table |
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The Galvanic
Table lists metals in the order of their relative activity in seawater
environment. Information derived from
MIL-STD-889 |
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MILL-STD-8898-PDF
Military Standard Dissimilar Metals |
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This
standard defines and classifies dissimilar metals,
and establishes requirements for protecting coupled
dissimilar metals, with attention directed to
the anodic member of the couple, against corrosion. |
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Melting
Temperatures of Various Metals |
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Celsius and Fahrenheit Temperatures are indicated,
Metals are listed alphabetically. |
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Physical Properties of Weaving Wire |
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Table
provides hard drawn and annealed tensile strengths of weaving wire. |
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Wire Diameters |
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Gauge
sizes are indicated as whole numbers, the reference tables give the decimal equivalents of
the different gauge numbers utilized in wire cloth weaving. |
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Weights of Various Materials |
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Conversion factors provided to
determine
the approximate weight of wire cloth woven of various materials. Based on
the weight of Stainless Steel wire cloth. |
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ASTM
A740 - 98(2014
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Standard Specification for Hardware Cloth
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Woven or Welded Galvanized Steel Wire
Fabric |
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This specification covers woven
or welded galvanized steel wire fabric commercially
known as hardware cloth. It is customarily used for
window and screen door guards, tree guards,
industrial machine guards, sand screens, and grain
bins. It serves as a protective screen against
rodents and is used for many other home, farm, and
industrial purposes. The base metal of hardware
cloth shall be of good commercial quality carbon
steel wire. The zinc use in the galvanizing process
shall be any grade of zinc. Hardware cloth shall be
of wire woven or welded into squares or rectangles
and then galvanized by the hot-dip process. The mesh
size in inches shall be determined by counting the
meshes for any interval of one continuous linear
foot, in the direction of either the warp or filler
wires, and finding the mesh size. All wire diameter
designations in this specification for hardware
cloth are finished sizes after galvanizing. Wire
diameter for calculating purposes shall be the
average measured diameters, after stripping, of at
least five warp and an equal number of filler wires. |
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ASTM A123 /
A123M |
Standard Specification
for Zinc (Hot-Dip Galvanized)
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Coatings on Iron and
Steel Products |
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This specification covers the
standard requirements for hot-dip galvanized zinc
coatings on iron and steel products made from rolled
pressed and forged shapes, castings, plates, bars,
and strips. This specification deals with both un-fabricated
products and fabricated products, for example,
assembled steel products, structural steel
fabrications, large tubes already bent or welded
before galvanizing, and wire work fabricated from
uncoated steel wire. Also covered here are steel
forgings and iron castings incorporated into pieces
fabricated before galvanizing or those too large to
be centrifuged (or otherwise handled to remove
excess galvanizing bath metal). |
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ASTM B134 /
B134M |
Standard Specification
for Brass Wire |
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This specification establishes
the requirements for round, hexagonal, octagonal,
rectangular and square brass wire of UNS Alloy Nos.
C21000, C22000, C22600, C23000, C23400, C24000,
C26000, C27000, and C27400. The chemical
composition, temper, annealed wire grain size,
Rockwell hardness, and tensile strength requirements
are detailed. |
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Specifically About Brass |
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About Brass |
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Specifically About
Copper |
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About Copper |
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Specifically Stainless Steel |
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Stainless
Steel Reference Guide |
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Weaving and Wire Product
Standards |
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Standards, Styles and Types |
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Miscellaneous International Wire Standards |
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Information provided on this page was provided by
Chinese sources such as International Trade
Organizations, Trade Publications and the
International Public Domain. This information may
conflict with Governing US and European Standards.
Certain portions shown below could be inaccurate
misinterpretations as
they were interpreted from Chinese text. |
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European
Wire & Wire Product Weaving Standards |
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Formula
Index |
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Formulas for computing
Woven Wire Mesh Count,
Size of Opening and Open Area. |
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Tolerances |
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Roll Width Tolerance |
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Screen Camber and Bow |
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If unbalanced warp
tensions exist in a woven wire screen, that
screen will usually assume a "crescent" or
"banana" shape when laid flat upon a horizontal surface. This deviation
from a straight line is hereby defined as "camber." |
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Space Cloth Opening
Tolerances |
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Allowable deviation of space cloth
openings. |
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Woven Wire
Mesh Count Tolerance |
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The allowable deviations in the
mesh count shall be applied separately for warp and shute (weft) directions. |
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Wire
Diameter Tolerances |
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ASTM
Allowable
deviation from nominal Carbon and Stainless Steel wire diameters. |
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Wire Mesh Opening Tolerance |
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Formulas provided
to calculate Mesh Opening Tolerances were derived
from
ASTM E2016-15
Table 7
- Tolerance in Mesh Count |
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Allowable Tolerances For Woven Wire
Mesh and Wire Cloth -Printable |
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Woven Wire Product Standards. |
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European and Asian
Wire and Woven Wire Product Standards |
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Predominately utilized for wire cloth intended for
use in European and Asian Countries. |
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RRW-360A |
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Federal Specification Wire Fabric, Industrial |
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RRW365 |
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NAICS
Codes |
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For
both woven wire and wire mesh products. |
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North American Weaving Wire and Woven Wire Product Standards |
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These
standards are commonly adhered to by wire weavers
throughout North America in addition to European and
Asian weavers who produce wire cloth for products
marketed or utilized within the Northern Hemisphere.
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US
Wire Cloth Standards |
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List
of the current North American weaving standards,
including some brief background history and their
continuing evolution. |
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The Weaving Process |
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Methods, Looms and Tooling |
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Weave Styles |
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Wire cloth weaves in both common
and pre-crimped are defined and illustrated. |
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Wheel Crimper Tooling |
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Crimping Wheels are the most precise and economical
method for producing pre-crimped wires. |
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Punch
Crimper Tooling |
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This
Section is Currently Under Construction |
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Synthetic Screening |
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Polyurethane Screening Systems |
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A comparison of the
advantages and disadvantages of Tension Mats and
Modular Screening Systems. |
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Polyurethane
& Rubber Screening Glossary of Terms |
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A
complete glossary of terms pertaining to synthetic screens. |
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Research Links |
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Wire
Standards
and Trade Associations |
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