We are a leading cable ladder supplier in Malaysia, specializing in providing high-quality galvanised cable ladders for various industrial and commercial applications. We understand the importance of durable and corrosion-resistant cable management solutions. Our galvanised cable ladders are specifically designed to meet the demanding needs of cable organization and support in various environments. As a reputable cable ladder supplier and metal fabrication company, we manufacture high-quality steel that undergoes a meticulous galvanisation process. This process involves coating the steel with a protective layer of zinc, enhancing its resistance to corrosion, moisture, and other environmental factors. The result is a robust, long-lasting cable ladder that can withstand even the harshest conditions. You can be assured of reliable cable management and protection by choosing our galvanised cable ladders. The ladder's sturdy rungs provide a safe and organized cable pathway, ensuring efficient installation, maintenance, and future expansions. Additionally, the galvanised coating extends the lifespan of the cable ladder, reducing the need for frequent replacements and minimizing maintenance costs. When you partner with us as your cable ladder supplier in Malaysia, you benefit from our commitment to quality, reliability, and exceptional customer service. We strive to deliver on time and provide competitive pricing without compromising on the quality of our products.
A. Hot Rolled Steel Plates, Sheets and Coils S235 JR, as per: EN 10025 -2 / DIN 17100 / BS 4360 / ASTM A 653M / ASTM A 1011 / ASTM A 1011-01a JIS 3101 / JIS 3106 / GB 700 / GB / T1591. ASTM A 907 / ASTM A 1018M. ASTM A 570M / ASTM A 572M.
B. Cold Rolled Steel DC 01, as per: EN 10130 / DIN 1623, Part 2 / BS 1449:1 / ASTM A366 / ASTM A 1008 / JIS G 3141 / GB 699. EN 10131 / ASTM A 568M
A. Continuously Pre- Galvanized Hot–Dip Zinc Coated Steel DX 51D + Z, as per: EN 10327 / DIN 17162 / BS 2989/ ASTM A 527M / ASTM A 653M / JIS G 3302. EN 10326/ EN 10142 / ASTM A 526, 527, 528/ ASTM A 146
B. Electro Galvanized Steel (Electrolytic Coating) DC01 + ZE v, as per: EN 10152 / DIN 17163 / ASTM A591 / JIS G 3313 / JIS G 3141 / BS 1449:1 EN 10131
A. Austenitic Stainless Steels SS 304 & SS 316, as per: ASTM A 240 /EN 10088-2/ DIN 17400 / BS 1449:2 / ASTM A480 / ASTM A666 / ISO 3506 / EN 10028-7 /JIS G 4304
B. Stainless Steel Fasteners EN 3506
C. Stainless Steel Wire BS 1554 ,ASTM A276
A.Aluminum 6063 T6
A. Hot–DIP Galvanization after Fabrication as per: ASTM A 123 / ASTM A 153 / ISO 1461. BS 729 / DIN 50976
B. Zinc Electroplating after Fabrication as per: ASTM B633 / EN 12329 / ISO 4042/ BS 1706 / BS 3382 / DIN 50961
C. Powder Coating Epoxy / Polyester / Epoxy & Polyester BS 3900 / ISO 2409 / ISO 1519 / ISO 1520
1) Hot Dip Galvanization (HDG)
2) EPOXY Powder Coating
Products covered by this standard are, in normal use, passive in respect of electromagnetic influences, emission and immunity.
NOTE: When products covered by this standard are installed as part of a wiring installation, the installation may emit or may be influenced by electromagnetic signals. The degree of influence will depend on the nature of the installation within its operating environment and the apparatus connected by the wiring.
Power supply cables and signal cables can share the same cable conveyance systems (Trays, Channels, Etc.) Adequate separation need to be provided (by distance or shielding) between power cables and signal cables. Power cables and signal cables need to be cross at right angles. In order to prevent disturbances, the minimum separation between power cables and signal cables depends on many factors, such as following:
Metal systems for cable conveyance should always be connected to the local ground at both ends. Over long distances (more than 50 m), additional connections to the ground systems are recommended at irregular intervals. All ground should be a short as possible.
Overview, the basic purposes of connection and grounding applicable to unshielded and shielded wiring systems are as follow:
The following factors shall be considered when determining the appropriate Cable Trays Systems:
The National Electrical Manufacturers Association (NEMA VE-1) USA, classifications for Cable Trays were established to simplify and standardize the specifications of Cable Trays. This classification is based on the working load (the total weight of the cables), and the support span (the distance between supports).
Support span is the distance between the supports. The NEMA standard support spans are based on 8’ (2.4m), 12’ (3.7m), 16’ (4.9m) and 20’ (6.0m).
The following table summarizes the NEMA classes based on cable/working load and support span :
The total weight in the tray which causes the tray to collapse, is called the “destruction load capacity”. When trays do collapse, they generally do so by premature lateral buckling (compression) of the top flange.
A concentrated load is a static weight applied between the side rails at mid span. When specified, these concentrated static loads may be converted to an equivalent uniform load (We), in pounds per linear foot or Kg/m, using the following formula:
This load is added to the static weight of the cable before selecting the appropriate NEMA load span designation. Please note per the NEMA VE-1 guidelines all SFSP Cable Ladder Trays are labeled as follows:
All loads stated in the selection charts have a 1.5 safety factor, in accordance with the NEMA VE-1 guidelines. A safety factor is the reserve strength, above the actual cable loading, for which a tray system was designed.
Conversion of Safety Factor from 1.5 to 2.0 The loads stated in the selection charts have a safety factor of 1.5 per the NEMA VE-1 guidelines. To convert the load carrying capabilities, as listed in these charts, to a 2.0 safety factor, multiply the stated loads by 0.75.
Loading data stated in the catalogue have been derived from actual testing of the tray systems, or by means of structural calculations. These figures are based on simple beam calculation, per the NEMA VE-1 guidelines.
When tray is supported as a simple beam, the load causes bending moments all along the beam resulting in deflection, called sag, inducing stress in the beam. The material above the longitudinal center line (neutral axis) is compressed.
Material below, is stretched and is in tension. The maximum stress in a simple beam is at the center of the span. Failure of Cable Trays will occur in compression before tension. This is why tray rails often have stiffened top flanges.
A simple beam is present when a single straight section of tray is supported on each end. When a series of straight sections are connected and supported by more than one support it is referred to as a continuous beam.
The NEMA VE-1 standards consider only a simple beam for testing purposes, due to the following reasons:
Cable Ladder Trays meet all performance and dimensional criteria with safety factor. When deflection limitations are imposed, a less economical tray system may result. If deflection is a concern, SAN Engineering recommends these maximum limits for the optimum design.
The support span can't be greater than the straight section length, to ensure no more than one splice is located between supports. Location of Couplers. The location of the coupler dramatically affects the deflection of a Cable Ladder Trays System under equal loading conditions. Testing indicates that the maximum deflection of the center span of a three-span tray run can decrease four times if the couplers are moved from one-quarter span to above the supports. This can be a major concern for designers considering modular systems for tray and pipe racks
Cable Ladder Trays are available in 12’(3.7m) and 24’(7.4m) lengths in accordance with the NEMA Standards.
Customized lengths are also available upon request.
The following factors need to be considered when specifying the lengths of the trays:
The support span shall not be greater than the tray length. This ensures that the two splice plate connections will not fall within one support span.
When installing trays in a limited space, as often encountered in commercial applications, 10’ (3.0m) and 12’ (3.7m) lengths of tray are easier to handle and therefore are better suited for those applications.
Where trays are being installed in an industrial facility, where space is not a significant issue, handling 20’ (6.1m) and 24’ (7.4m) lengths may be more economical. In this instance, half as many tray connections need to be made. Additionally, if the proper tray system is specified, support spans may be lengthened..
It is important to use expansion connectors when installing long runs of Cable Ladder Trays. The number of expansion connectors required will depend on:
(1) the maximum temperature difference
(2) the tray material being installed
Expansion Connectors allow 1” (2.5cm) of travel.
This table illustrates how often expansion splice plates shall be used.
NEC (ANSI / NFPA 70),Article 318-7 allows for Cable Trays to be used as an equipment grounding conductor in commercial and industrial establishments. The following table lists specific ampere ratings and the minimum cross sectional area requirements for each rating.
SAN Engineering Cable Tray Systems which meet the National Electrical Code (ANSI/NFPA 70), these can be used for any project worldwide except where another standard may take precedence.
The cross-sectional area for each Cable Trays System, straight sections and fittings can be found on the appropriate selection charts contained within this publication. In addition, all Cable Trays, straight sections and fittings are supplied with pressure sensitive labels indicating the cross-sectional area of both side rails, as required by the (NEC) National Electrical Code.
The table is used to determine the proper gap setting between trays. The metal temperature determines the proper gap setting at the time of installation. Establish maximum and minimum temperatures in summer and winter for the area. Draw a line connecting them. Using the metal temperature at time of installation (C° or F°) draw a horizontal to temperature slope and plot straight down to find the gap distance at expansion joint. This diagram illustrates the proper installation of an expansion system. It is important to note that Cable Ladder Trays grounding straps are required when expansion connections are made. This will ensure proper grounding continuity.
Cable Tray connections made with standard rigid splice plates; these rigid type connections do not require electrical bonding straps. Electrical bonding straps are required where Cable Trays are joined by connectors which allow movement, such as: vertical adjustable connectors, horizontal adjustable connectors and expansion connectors.
Proper grounding is also necessary where Cable Trays run parallel to each other, are stacked upon one another and in other instances where tray runs are discontinuous.
