This standard specifies the technical requirements, inspection rules, packaging, transportation and storage of braided mesh fence support parts - corner posts, gate posts, intermediate posts, small posts and connectors - fence gates, hooks, and tie hooks. This standard applies to braided mesh fence support parts and connectors. JB/T 7138.3-1993 Technical conditions for braided mesh fence support parts and connectors JB/T7138.3-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Plaited Mesh Fence
Technical Conditions for Supports and Connectors
Subject Content and Scope of Application
JB/T7138.393
Replaces ZBB9200287
This standard specifies the technical requirements, inspection rules and marking, packaging, transportation and storage of support parts for plaited mesh fences, including corner posts, gate posts, intermediate posts, small posts and connectors, including hooks. This standard applies to support parts and connectors for plaited mesh fences. 2 Reference standards
GB9787
GB13013
GB/T13306
ZBB92005
ZBQ11005
3 Terms
Dimensions, shapes, weights and permissible deviations of hot-rolled equal-leg angle steel Hot-rolled plain round steel bars for reinforced concrete
Welded steel pipes with diameters of 5 to 152 mm
Terms for fences
Rapid hardening sulphoaluminate cement
The terms used in this standard shall comply with the provisions of ZBB92005. General technical requirements
Supports and connectors shall be manufactured in accordance with drawings and technical documents approved through prescribed procedures. 5 Technical requirements for supports
5.1 The materials used for steel supports shall comply with the provisions of GB9787 and YB242. The welding parts of each column and support rod should be free of ash, cold welding and burns, and the welds should be smooth. 5.1.1
Each column and support rod should be painted with anti-rust paint, and the coating should be even without exposed skin and obvious wrinkles. The material and length of each column and support rod should comply with the requirements of Table 1. Table 1 Steel support parts for braided mesh fence
Net width nominal size
Corner posts, gate posts
Material specifications
Hot-rolled equal-leg angle steel
90×90×8
: Cement support parts
Intermediate posts
Material specifications
Hot-rolled equal-leg angle steel
70×70×7
Small posts
Material specifications
Hot-rolled equal-leg angle steel
40×40×4
This article only applies to small posts for steel bar-alkali-resistant glass fiber reinforced cement braided mesh fence. Approved by the Ministry of Machinery Industry on 1993-11-21
Fence gates, hooks, tie
Support rods
Material specificationsbZxz.net
Welded steel pipes
Implemented on 1994-03-01
5.2.1 Technical requirements for raw materials
JB/T 7138.393
5.2.1.1 Cement shall comply with the provisions of ZBQ11005. 5.2.1.2 Sand and gravel shall use river sand with a radius of less than 5mm and a mud content of less than 3%. 5.2.1.3 Glass fiber is alkali-resistant glass fiber containing aluminum, 5.2.1.4 The material of the steel bar shall comply with the provisions of GB13013 and be a hot-rolled round steel bar with a diameter of 6mm. 5.2.2 Technical requirements
5.2.2.1 The outer surface of the small column should be smooth, without exposed glass fiber and steel bar, no visible through cracks, and the reserved holes should not be blocked.
5.2.2.2 The bending strength of the small column should be able to meet the following requirements: fix the 600mm long part of the small column into the soil to make it a cantilever beam, hang a 5kg weight at each reserved hole, and there should be no through cracks at the maximum bending moment. 5.2.2.3 The impact strength of the small column should be able to meet the following requirements: when the small column is installed with a pile driver, there should be no through cracks on the outer surface of the small column. 5.2.2.4 The lower deviation of the cross-sectional area of ​​the small column is 1cm2, the length deviation is 2cm, and the straightness tolerance of the rod is 1cm. 5.2.3
The length of the small column should meet the requirements of Table 2. Table 2 Dimensions of small posts of braided mesh
Nominal size of mesh width mm
Technical requirements of connectors
Length of small posts
Cross-sectional area of ​​small posts cm*
The material of the hook should be galvanized steel wire with a tensile strength of not less than 350MPa and a diameter of 2.5mm. 6.2 Hook
The material of the hook should be galvanized steel wire with a tensile strength of not less than 350MPa and a diameter of 2.5mm. 6.3 Fence gate
The material of the frame and frame reinforcement of the fence gate should comply with the provisions of YB242, and the diameters are 25mm and 20mm respectively. 6.3.1
Welded steel pipes.
6.3.2 The fence gate should be welded firmly, with smooth welds, without burns and cold welds. 6.3.3 The fence gate should be painted with anti-rust paint and silver powder, with uniform coating and no exposed and accumulated surfaces. 6.3.4 The door net is a twisted mesh made of galvanized steel wire with a diameter of 2.5mm and a tensile strength of -350~660MPa, with a mesh size of 70±4mm. The door net should be firmly tied to the door frame.
The size of the fence door should be manufactured according to the specified drawings or the agreement between the supplier and the buyer. 7 Inspection rules
7.1 Factory inspection
The support parts and connectors for the fence should be inspected and qualified by the quality inspection department of the manufacturer before they can leave the factory. 7.1.1
7.1.2 The items of factory inspection should be the contents of Articles 5.1.3 and 5.2.3 of this standard. 7.2 Type inspection
7.2.1 Type inspection should be carried out in any of the following cases:a.
Trial production and identification of new products or old products transferred to the factory for production; after formal production, if there are major changes in structure, materials, and processes that may affect product performance;JB/T7138.3-93
In normal production, type inspection should be carried out once a year;c.
When the product is resumed after a long period of suspension;d.
When the national quality supervision agency proposes a type inspection requirement.e.
7.2.2 Inspection items
The inspection items for steel supports are the contents of Article 5.1 of this standard; the inspection items for small cement columns are the contents of Articles 5.2.2 and 5.2.3 of this standard; the inspection items for fence gates are the contents of Article 6.3 of this standard. 7.2.3 Inspection batches are: 26 to 50 pieces of each support, 3 pieces are randomly selected from them; 7 to 15 pieces of fence gates, 2 pieces are randomly selected from them. 7.2.4 Judgment rules: Among the test items specified in Article 7.2.2 of this standard, if all items are qualified, the batch of products is judged to be qualified; if one item is unqualified, the batch of products is judged to be unqualified. 8 Marking, packaging, transportation and storage
Each support and connector should be hung with a label. The label should comply with the provisions of GB/T13306, and the label should indicate: 8.1
Product name and specifications;
Manufacturer name and date of manufacture.
8.2 Every 10 steel small columns are bundled, and every 5 cement small columns are bundled, and they are firmly tied with steel wire with a diameter of not less than 2.0mm. The bundles of cement small columns should also be firmly tied with straw ropes. Hooks and tie hooks should be packed in bags with the bag mouths well sealed. 8.3
Avoid contact with acids, alkalis and salts during transportation and storage to prevent corrosion. 8.4
When transporting and storing, they should be neatly stacked on the spot to prevent rolling and hitting people or objects. 8.5
Additional instructions:
This standard was proposed and coordinated by the Hohhot Animal Husbandry Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Inner Mongolia Animal Husbandry Machinery Production and Sales Joint Company and the Hohhot Animal Husbandry Machinery Research Institute. The main drafters of this standard are Shi Wenbin, Wu Manzhi, Wang Yixian and Jia Fuzeng. 9
People's Republic of China
Mechanical Industry Standard
Knitted Wire Mesh Fence
Technical Conditions
JB/T7138.1~7138.393
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (PO Box 8144, Beijing, 100081)
Copyright reserved
No reproduction allowed
Format 880×12301/16
Sheet 1
First edition in January 1994
Word count 18.000
First printing in January
1994 January)
Print count 00,001500
Price 6.00 Yuan
No. 1466
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