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Cable Management System
About HDMann Cable Management System
  As an ISO9001:2008 Quality Certified company and an ISO14001:2004 Environmental Certified company.
  And Established in 1999 as a professional Supplier of cable management solution systems, HDMANN Metal Industry has developed into an excellent & leading  manufacturing company specialising in wire mesh cable tray , perforated cable tray ,Ladder type NEMA  cable tray ,FRP cable tray ,cable trunking and strut channel Systems in the Electrical & Metal industry. Continual investment in the latest machinery, technology and distribution has resulted in the fully ability to provide a  top quality product at the most competitive price with an enviable reputation for service.
  
  "Excellence in Electrical Engineering" is the primary philosophy that drives all our activities in  cable management  Solution.
  With years of expertise in manufacturing & serving world wide Market ,HDMANN Metal Industry  has earned its reputation as a Quality Conscious & Professionally managed organization And  has evolved as leader  manufacturer in china  for the Cable  Management Systems .
 
  As The Complete Cable Management Solution Manufacturer HDMANN Cable Tray Systems Offerings:
    Wire Mesh Cable Tray system
    Ladder Cable Tray systemperforated Cable Tray system  
    Cable trunking system 
    FRP cable tray systemstrut channel system
  Legal Definitions and descriptions provided by CTI (Cable Tray Institute) www.cabletray.com
  
  What is a Cable Tray System?
    Per the National Electrical Code, a cable tray system is "a unit or assembly of units or sections and associated fittings forming a rigid structural system used to securely fasten or support cables and raceways."
 
  What does this mean?
    Cable trays support cable the way that roadway bridges support traffic.
A bridge is a structure that provides safe passage for traffic across open spans.
Cable tray is the bridge that allows for safe transport of wires across open spans.
  Therefore, think of cable tray as the structural component of a building's electrical system.
  
  What standards / guidelines are available for cable tray systems? 
    1. The National Electrical Code publishes the standards for all types of electrical applications. Articles 318, 250, and 800 cover various aspects of cable tray systems.
    2. NEMA, (National Electrical Manufacturers Association), is an association comprised of the major cable tray manufacturers in the industry. 
 This committee has published three documents to date: NEMA VE1, FG1 and VE2. 
   NEMA VE1 covers general cable tray definitions, manufacturing standards, performance standards, test standards, and application information. Free Download of this document is available on the NEMA website. 
   NEMA FG1 addresses the standards for fiberglass cable tray systems Free Download of this document is available on the NEMA website.
   NEMA VE2 is a cable tray installation guideline which covers receiving and unloading material, storage of material, and general installation practices. Free Download of this document is available on the NEMA website.
   CTI, (Cable Tray Institute), is a trade association comprised of the major cable tray manufacturers in the industry and was formed to provide specifiers, designers, and installers information on the advantages of using cable tray systems over other types of products. (i.e. conduit, ladder rack, etc.)
 
What types of Cable Tray are available? 
 1. Ladder
 2. Solid Bottom
 3. Trough
 4. Channel
 5. Wire Mesh 
 
How do I know what type of cable tray is right for my application? 

 1. Ladder Cable Tray provides:
     a. Solid side rail protection and system strength with smooth radius fittings and a wide selection of materials and finishes.
     b. maximum strength for long span applications standard widths of 6,12,18, 24, 30, and 36 inches
     c. standard depths of 3, 4, 5, and 6 inches
     d. standard lengths of 10, 12, 20 and 24 feet
     e. rung spacing of 6, 9, 12, and 18 inches Ladder cable tray is generally used in applications with intermediate to long support spans, 12 feet to 30 feet.

   2. Solid Bottom Cable Tray provides:
       a. Non-ventilated continuous support for delicate cables with added cable protection available in metallic and fiberglass.
       b. Solid bottom metallic with solid metal covers for nonplenum rated cable in environmental  air areas
       c. standard widths of 6, 12, 18, 24, 30, and 36 inches
       d. standard depths of 3, 4, 5, and 6 inches
       e. standard lengths of 10, 12, 20 and 24 feet Solid Bottom cable tray is generally used for minimal heat generating electrical or telecommunication applications with short to intermediate support spans of 5 feet to 12 feet.

    3. Trough Cable Tray provides:
        a. Moderate ventilation with added cable support frequency and with the bottom configuration providing cable support every 4 inches. Available in metal and nonmetallic materials.
        b. standard widths of 6, 12, 18, 24, 30, 36 inches
        c. standard depths of 3, 4, 5, and 6 inches
        d. standard lengths of 10, 12, 20 and 24 feet
        e. fixed rung spacing of 4 inch on center
  Trough cable tray is generally used for moderate heat generating applications with short to intermediate support spans of 5 feet to 12 feet.
 
     4. Channel Cable Tray provides:
          a. an economical support for cable drops and branch cable runs from the backbone cable tray system.
          b. standard widths of 3, 4, and 6 inches in metal systems and up to 8 inches in nonmetallic systems
          c. standard depths of 1?-1? inches in metal systems and 1, 1 1/8, 1 5/" and 2 3/16 inches in nonmetallic systems
          d. standard length of 10, 12, 20 and 24 feet Channel cable tray is used for installations with limited numbers of tray cable when conduit is undesirable. Support frequency with short to medium support spans of 5 to 10 feet.
 
     5. Wire Mesh Cable Tray provides: 
         a. A job site, field adaptable support system primarily for low voltage, telecommunication and fiber optic cables. These systems are typically steel wire mesh, zinc plated.
         b. standard widths of 2, 4, 6, 8, 12, 16, 18, 20, and 24 inches
         c. standard depths of 1, 2, and 4 inches
         d. standard length of about 10 feet (118")  
Wire Mesh tray is generally used for telecommunication and fiber optic applications and are  installed on short support spans, 4 to 8 feet.