Fence From China

texture of material
Low carbon steel wire
Weaving and characteristics
Woven and welded.
purpose
It is used for guardrail protection of roads, railways, airports, residential quarters, ports and wharves, gardens, breeding, animal husbandry, etc.
characteristic
Anti corrosion, anti-aging, sun resistance, weather resistance and other characteristics. The surface anti-corrosion forms of guardrail include electroplating, hot plating, plastic spraying and plastic dipping.
Use effect
(1) reasonable structure and excellent function.
coordinate with the landscape and have a beautiful form.
Anti corrosion treatment
After derusting, grinding, passivation, plastic coating, vulcanization and other processes, plastic plating is used. The color is fruit green, and the coating thickness is 0.5 ~ 0.6mm. The plating powder adopts imported weather resistant resin powder with better anti-aging performance. The coating must have the same color, smooth surface, and no sagging, dripping tumor or excess caking is allowed. The surface of plated parts shall be free of defects such as missing plating and exposed iron. [1]
classification
Expressway series
Frame barrier
Table 1 of material quantity of welded mesh barrier per kilometer is as follows:
Material name
Specification mm
quantity
remarks
Column
Φ eighty × three × two thousand one hundred and fifty-five
three hundred and thirty-four
Including column cap
frame
twenty × thirty × one point five
three hundred and thirty-three
A3 steel
Vertical bar
twenty × thirty × one point five
three hundred and thirty-three
A3 steel
expand all
Double wire barrier
Welded mesh: the metal wire used for welded mesh shall be low carbon steel wire, and its chemical properties shall comply with the provisions of gb343 For sheet nets, the number of solder joints falling off shall be less than 4% of the total number of solder joints; For coiled nets, the number of solder joints falling off on any net with an area of 15 square meters shall be less than 4% of the total number of solder joints on this area. [2]
Accuracy requirements for welded mesh: 1. The allowable deviation of steel wire diameter shall comply with the provisions of Table 2. Table 2 (unit: mm)
Wire diameter
two point two
two point five
two point eight
three point five
four
Allowable deviation
±0.05
±0.05
±0.06
±0.06
±0.06
2. The allowable deviation of grid size shall comply with the provisions of Table 3. Table 3 (unit: mm)
Grid size
Allowable deviation
Grid size
Allowable deviation
fifty
±2
one hundred
±4
seventy-five
±3
one hundred and fifty
±6
eighty
±3
one hundred and sixty
±6
3. The allowable deviations of mesh length and width are ± 0.05% of mesh length and width respectively.
Table 4 specification and size of welded mesh
Code
Wire diameter
Grid size (longitudinal length a × Transverse width b) mm
Mesh length L (m)
Mesh width b (m)
Sheet net
Roll net
WW-2.2-50
WW-2.2-100
two point two
fifty × 50 100 × fifty
thirty
1.5~1.9
WW-2.8-50
WW-2.8-100
WW-2.8-150
two point eight
fifty × fifty
one hundred × fifty
one hundred and fifty × seventy-five
expand all
Note: the diameter of steel wire is before anti-corrosion treatment.
Hook barrier
See Table 5 for the material consumption of the grid with hook per kilometer.
Code
Material name
Specification mm
quantity
remarks
one
Vertical channel steel column
seventy × forty × fifteen
three hundred and thirty-four
Cold formed channel steel
two
Mesh
Φ 4-75 × one hundred and fifty
three hundred and thirty-three
Cold drawn steel wire
Barbed wire fence
Low carbon steel wire shall be used for strand and barbed wire, and its mechanical properties shall comply with gb343 There are 4 thorns in each knot of the barbed wire, and the shape of the barbed wire should be regular. The angle of the barbed wire a ≤ 25 °, and the included angle of the barbed wire β It is 90 ° ± 20 °, and the thorn length L is 16mm ± 3mm. The thorn wire shall be wound around the strand wire for not less than 1.5 turns. The twisting shall be firm and the thorn shape shall be uniform. The specification and size of barbed wire mesh shall comply with the following chart.
Specifications and dimensions of barbed wire mesh are shown in Table 6.
Code
Diameter of steel wire mm
Stab distance DMM
The number of twists n is not less than
Bw-2.2-76
two point two
seventy-six
three
Bw-2.2-102
one hundred and two
four
bw-2.2-127
one hundred and twenty-seven
five
expand all
Note: the diameter of steel wire is before anti-corrosion treatment.
Steel mesh anti glare net
The specifications and dimensions of steel mesh are shown in Table 7.
Code
Plate thickness d
mm
Grid size
Mesh size
Short pitch TL
Long pitch TB
Pedicel width b
Mesh length L
Mesh width b
mm
mm
mm
mm
M
GW-2.0-18
two
eighteen
fifty
two point zero three
1.9~3.0
1.5~1.9
expand all
Note: the thickness of the plate and the width of the screw stem are before the anti-corrosion treatment.
Anti throwing net
Function of bridge anti throwing net: the bridge anti throwing net is mainly set on the overpass or the separation overpass under the main line to prevent debris from falling on the road lane below the bridge and ensure vehicle safety.
It mainly includes steel mesh, welded mesh and other structural forms. [2]
Railway series
Flat iron fence