“Long ChangBridge Grid Product Introduction and Design & Production Process
“Long ChangBrand Grid Bridge SupportAccording to"Cable Bridge and Ladder System for Electrical Installation"IEC 61537 StandardDesign and production。Suitable for power cables, control cables, lighting wiring, data cables for data centers, and overhead installations indoors and outdoors.
The product boasts a variety of advantages:：
1． New look, flexible assembly, aesthetically pleasing, innovative and eye-catching, offering a fresh perspective.
2． This product is suitable for installations under various conditions, with convenient, flexible, quick, and simple wiring, maintenance, and upgrades. It meets stringent quality and installation standards, greatly facilitating the process.
Customers find it easier to manage cables.
3． The "easy-to-deform" structure and "quick-install accessories" significantly reduce bridge false installation and cable wiring time.
4． Effectively reduces the impact of electromagnetic interference.
5． Utilizes its designed structure for more efficient and safe air circulation, preventing water and dust accumulation.
Design, production, inspection standards and requirements:
Our company offers a variety of material options for our current products.:
1008，195F，Q235，301，304，3042，316，316L。
Surface finishing methods include electroplated zinc, environmentally friendly zinc plating, color zinc, blue zinc, white zinc, zinc-nickel plating, hot-dipped zinc.
Powder coating, electrolytic polishing (stainless steel).
1) The metal mesh cable bridge consists of steel wires in both longitudinal and transverse directions, with the smaller wire diameter being:
4mmDiameter for width not exceeding150mmBridge架
4.5mm diameter for bridge supports measuring 200mm in width
5mm diameter for bridge rails measuring 300mm wide
6mm diameter for bridge channels with widths of 400mm, 450mm, 500mm, and 600mm.
2) The top steel wires on both sides of the bridge架 are made of "TForm weldingEstablish a safe margin.
3) Each grid of the bridge is 50mm x 100mm in size.
4) Bridgeway installation methods include suspended installation, wall-side mounting, underfloor or cable trench installation. Larger support components have a wider installation spacing.2.5mAnd it must not exceed the maximum load-bearing capacity specified by the manufacturer for the cable tray.
5) The average tensile strength at all weld joints is 500 kg.
6) Testing
a). In accordance with European standardsCEI/61537: The load-bearing and deformation characteristics of bridge structures must be tested and the results must be published.
b). Must undergo independent testing to determine if the support part is suitable forCat6 Data cables.
c). As shouldE30/E90Conform to standard fire resistance testing.
d). The electrical continuity of the connecting components must be tested using known methods and results.
Surface Treatment
i). Electroplated zincBSEN 12329-2000Level 2) Suitable for indoor installation;
ii). Galvanized Zinc Coating ThicknessBS 729) In60To80Within micrometers;
iii). Stainless Steel AFNOREZ CND 17.2 /AISI 316L）
Testing Requirements: Refer toROHS Directive 2002/95/EC and subsequent amendments.
Testing Method: Refer toIEC62321/2ndCDV(111/95/CDV):Procedure for the determination of restricted substance content in electronic and electrical products
（1） Determine cadmium content using ICP.
（2） Determine lead content using ICP and AAS.
（3） Determine mercury content using ICP
（4） Determine the content of hexavalent chromium using the spot test method/colorimetry.
Test Results:
Test results of the chemical method (Unit: )mg/kg）
Test Items | Method (see) | 1 | MDL | ROHS Limit Values |
Cadmium (Cd) | （1） | ND | 2 | 100 |
Lead (Pb) | （2） | ND | 2 | 1000 |
Mercury (Hg) | （3） | ND | 2 | 1000 |
Spot test/Boiling water extraction method for hexavalent chromium (CrVI)） | （4） | Negative | See Note (4) | # |
Test Part Appearance Description:
1、 Metallic Silver Blue
Note:
（1） mg/kg = parts per million (ppm)
（2） ND = Not Detected
（3） MDL = Limit of Detection
（4） Spot measurement method:
Negative = Hexavalent Chromium Not Detected in Coating, Positive = Hexavalent Chromium Detected in Coating
When the spot test result isNegative or uncertain, the boiling water extraction method will be used for further result verification.
Boiling Water Extraction Method
Negative = Hexavalent Chromium Not Detected in Coating
Positive = Hexavalent Chromium detected in the coating indicates that the concentration of hexavalent chromium in the boiling water extract of the tested sample with an area of 50 cm² is equal to or greater than 0.02 mg/kg.
（5) #= Positive indicates the detection of hexavalent chromium on the tested sample.
Negative indicates no hexavalent chromium detected on the tested sample.
Reference to higher permissible limit values2002/95/EC ROHS Directive and subsequent amendments including 2005/618/EC.
Test Conclusion: Based on the tests conducted on the samples provided, the results are in compliance with the EU standards.Compliant with the requirements of the ROHS Directive 2002/95/EC and subsequent amendments.
Hot-dip galvanized
Inspection Criteria:"JB/T10216-2000 Electrical Control Distribution Cable Trays"
Sequence Number | Inspection Project | Single Please provide the Chinese content to be translated. | Standard Regulation | Test Results | Single Item Determine | |
1# | 2# | |||||
1 | Coating Thickness | um | ≥65 | 70 | 67 | Qualified |
2 | Adhesion | Grade | The galvanized layer should not exhibit peeling, flaking, or bulging after lever etching testing. | Meets | Qualified | |
3 | 48-hour Salt雾 Test | Grade | After 48 hours of salt spray test, not less than the 3 specified in Table 6 of JB/T6743-1993. | 3 | Qualified | |
Inspection Conclusion: The sample has been inspected, and the items examined are in compliance.Requirements as specified in JB/T10216-2000 standard.
Product Load Capacity Comparison Table
Iron-made:
Specification (MM) | Load Capacity (KG/M) | Note | |
Spaced brackets at 1.5 meters | Standoff spacing: 2 meters | ||
30*50（100） | 10 | 7 | |
30*150 | 12 | 7.5 | |
30*200 | 16 | 10.5 | |
30*300 | 22 | 13 | |
54*50（100） | 20 | 13 | |
54*150 | 30 | 20 | |
54*200 | 39 | 30 | |
54*300 | 67 | 40 | |
54*400（500） | 105 | 65 | |
54*600 | 122 | 70 | |
105*100 | 41 | 30 | |
105*150 | 60 | 45 | |
105*200 | 80 | 55 | |
105*300（400） | 120 | 83 | |
105*500（600） | 145 | 90 | |
Stainless steel made:
Specification (MM) | Load Capacity (KG/M) | Note | |
Spacing between brackets: 1.5 meters | Spaced brackets every 2 meters | ||
30*50（100） | 9 | 6 | |
30*150 | 11 | 7 | |
30*200 | 15 | 9 | |
30*300 | 21 | 14 | |
54*50（100） | 21 | 15 | |
54*150（200） | 25 | 18 | |
54*300 | 46 | 28 | |
54*400 | 70 | 45 | |
54*500（600） | 105 | 75 | |
105*100（150） | 39 | 24 | |
105*200 | 62 | 42 | |
105*300 | 75 | 55 | |
105*400 | 110 | 75 | |
105*2500（600） | 135 | 90 | |
Note:
1） The values in the table are not complete figures.
2） When the spacing of the bracketsAt 1.5 meters, the descending distance from the bridge frame center to the origin does not exceed 7.5MM when bearing the weight specified in the table. When the bracket spacing is 2 meters, the descending distance from the bridge frame center to the origin does not exceed 10MM when bearing the weight specified in the table.
3） Due to stainless steel's greater toughness compared to iron, its bearing capacity is relatively lower.
