Ladder cable tray manufacturers in India make open trays with two side rails joined by rungs. The usual widths are 50 to 1,500 mm and the thickness is 1.6 to 3.0 mm, with rungs 250 to 300 mm apart. They come in different finishes and materials: powder-coated, hot-dip galvanised, painted, stainless steel or aluminium. Before ordering, compare the published dimensions, rung construction, coating standard, available fittings, and load-test data at your required support span, where available.
Aparna Rollform makes ladder cable trays at its plant in Patancheru, Telangana. This guide explains what a ladder cable tray is, its specifications and finishes, and how to choose a manufacturer.
Aparna Rollform ladder cable trays: quick summary
| Item | Detail |
|---|---|
| Manufacturer & plant | Aparna Rollform, Patancheru, Telangana |
| Size range | Widths from 50 mm to 1,500 mm, runner heights from 50 mm to 120 mm, and runner collars from 15 mm to 25 mm |
| Rungs | Rungs from 30 × 15 mm to 50 × 20 mm, spaced 250 mm to 300 mm centre to centre, with 20 × 10 mm slots, supplied welded or bolt-fitted |
| Thickness | 1.6 mm to 3.0 mm |
| Finishes & materials | Pre-galvanised (GI, 80–120 GSM to IS 277), hot-dip galvanised (to IS 2629, IS 2633, IS 4759), powder-coated, painted, aluminium and stainless steel |
| Certifications | ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 |
A ladder cable tray is an open support for cables. It has two long side rails (called runners) joined by cross rungs at fixed gaps. The cables rest on the rungs, and air can move freely around them. It is also called a cable ladder. IEC 61537 is the standard used for cable tray systems and cable ladder systems.
Ladder trays are used for large power and control cable runs in power plants, oil and gas, refineries, heavy industry and utilities. In these places the spans are long and heat dissipation matters. They are not the first choice for small-diameter data or instrument cables, because such cables sag between rungs that are 250–300 mm apart. Perforated or solid-bottom trays suit them better. Also, open ladders need a cover where dust or falling objects are a concern.
| Tray type | Base / structure | Ventilation | Typical use |
|---|---|---|---|
| Ladder (channel runners) | Two formed side rails plus rungs | Maximum | Heavy power and control cables on long spans |
| Angular ladder | Mild-steel angle runners plus flat rungs | Maximum | Heavier, harsher runs, including oil and gas and marine environments |
| Perforated | Formed sheet base with slots | Moderate | Mixed power and control cables needing continuous support |
| Solid bottom | Continuous unperforated base | Minimal | Cables needing protection from dust and debris |
You can compare two ladder tray quotes properly only if both clearly state these nine points: width, runner height, runner collar, rung size, rung spacing, rung fixing, section length, thickness and finish.
| Parameter | Typical Industry Range | Aparna Rollform | Why it matters when comparing |
|---|---|---|---|
| Width | 50–1,500 mm | 50 mm to 1,500 mm | Decides cable capacity. Confirm whether width is measured inside or outside the runners |
| Runner (side rail) height | 20–150 mm | 50 mm to 120 mm | Decides how deep the cables can be laid, and how stiff the runner is |
| Runner collar | 15–45 mm where published | 15 mm to 25 mm | Stiffens the top edge of the runner |
| Rung size | About 30–50 × 10–20 mm | 30 × 15 mm to 50 × 20 mm | The rung section carries the cable load between the runners |
| Rung spacing | 250–300 mm c/c | 250 mm to 300 mm c/c | Closer rungs support smaller cables better, but add steel and cost |
| Rung fixing | Welded or bolted, rarely stated | Welded or bolt-fitted | Decides structural strength. Welded gives rigid, permanent joints, while bolted allows changes later |
| Section length | 2,500–3,000 mm where stated | 3 to 6 metres or even longer, depending on design and customer needs | Decides the number of joints and couplers per run, and the handling weight |
| Thickness | 1.5–3.0 mm | 1.6 mm to 3.0 mm | An important factor affecting tray stiffness, load capacity and material cost. Actual capacity also depends on the tray design and support span. |
| Finish | HDG, pre-galvanised, powder-coated, painted, SS, aluminium | HDG, pre-galvanised, powder-coated, painted, SS, aluminium | Decides service life |
Note: The typical industry ranges shown above are indicative estimates for general reference, not verified specifications for every manufacturer. Actual dimensions and specifications vary by manufacturer and product design. Confirm the exact specifications with the supplier before ordering.
Ladder trays are made either with rungs welded to the runners or with rungs bolted to them. Both are standard. The choice affects rigidity, coating and handling. Aparna Rollform makes both types.
| Aspect | Welded Rungs | Bolt-Fitted Rungs |
|---|---|---|
| Construction | Rungs are welded onto the runner collar, so the tray is one rigid piece. | Rungs are fixed to the runners with bolts. |
| Coating | Welding burns off the zinc locally on pre-galvanised steel. Welds need hot-dip galvanising after fabrication, or a zinc-rich repair paint. | Runners and rungs can be fully coated before assembly. Fasteners must match the coating type. |
| Site checks | Check weld quality and coating thickness/coverage at the weld points. | Check that bolts are tight and match the specified grade and finish. |
| Transport | Ships fully assembled. | Can ship fully assembled, or knocked down to save space. |
Indian quotations and marketplace listings may specify thickness in SWG (Standard Wire Gauge), while datasheets often use millimetres. SWG values are standard gauge equivalents, so confirm the specified thickness in millimetres with the manufacturer before ordering.
| SWG | Thickness |
|---|---|
| 19 SWG | 1.02 mm |
| 16 SWG | 1.63 mm (≈ 1.6 mm) |
| 14 SWG | 2.03 mm (≈ 2.0 mm) |
| 12 SWG | 2.64 mm (nearest to 2.5 mm; 2.5 mm is not an SWG size) |
| 11 SWG | 2.95 mm (≈ 3.0 mm) |
| 10 SWG | 3.25 mm |
Aparna Rollform ladder trays are 1.6 mm to 3.0 mm thick, which is roughly 16 SWG to 11 SWG.
Ladder trays are commonly used for long cable runs. But the load rating alone does not tell you much about a tray. You also need to know the support span and the deflection limit used during testing.
Section length is the length of one tray piece, usually 2.5–3 m. Support span is the distance between the brackets that hold the tray. These are two different measurements, so check which one the manufacturer is talking about.
IEC 61537 covers cable tray and cable ladder systems and their testing requirements. Load capacity varies with the tray design and support span. Where load-test data is available, check the tested load and deflection at your required support span. Also check the weight per metre of the tray.
Choose the finish according to where the tray will be installed.
| Finish | How it is applied | Standard Aparna Rollform follows | Typical environment |
|---|---|---|---|
| Pre-galvanised (GI) | Zinc-coated sheet, then formed | IS 277, 80–120 GSM | Indoor, dry |
| Hot-dip galvanised (HDG) | The fabricated tray is dipped in molten zinc | IS 2629, IS 4759, IS 2633 | Outdoor, industrial, higher-corrosion sites |
| Powder-coated | Electrostatic powder on a prepared surface | As per customer requirement | Interiors needing appearance or colour coding |
| Painted | A paint system on prepared steel | As per project | Protection depends on the paint system; ask for the system and dry film thickness |
| Stainless steel | Corrosion-resistant alloy, no coating | Grade 304 & 316 | Chemical, food, pharmaceutical, coastal |
| Aluminium | Light and naturally corrosion-resistant | IS:1100 | Weight- and corrosion-sensitive installations |
Welding burns off the zinc coating on pre-galvanised steel around the weld points. With rungs 250–300 mm apart, a welded ladder has roughly 7–8 weld zones per metre. This is based on two weld points per rung and around 3.3–4 rungs per metre.
If the tray is hot-dip galvanised after welding, the welds get coated along with the rest of the tray. A welded ladder made from pre-galvanised steel needs a zinc-rich repair at every weld. For outdoor, humid and industrial sites, the coating process matters just as much as the base thickness.
Aparna Rollform can fabricate hot-dip galvanised (HDG) welded-rung ladder cable trays.
When shortlisting ladder type cable tray manufacturers, check these eight things:
If a manufacturer cannot give supporting details for these points, it becomes difficult to compare their products fairly.
| Check | What to ask | Evidence to request |
|---|---|---|
| 1. Own manufacturing | Where is the plant, and can we inspect the trays before despatch? | Plant address; pre-despatch inspection |
| 2. Runner and rung construction | How are the runners formed? What is the rung section? Are the rungs welded or bolted? | Process description; sample length to check runner straightness and weld quality |
| 3. Dimensions in writing | What are the width, runner height, collar, rung size and spacing, length and thickness for each item? | Datasheet or drawing with tolerances |
| 4. Coating and when it is applied | Is the finish GI or HDG? What is the GSM or coating thickness in microns? Is HDG applied after the rungs are welded? How are welds treated on GI ladders? | Coating test report; mill test certificate for the steel |
| 5. Load at your support span | What is the safe working load at our bracket spacing, and what deflection was recorded? | Check the load capacity and deflection requirements for the specified support span. |
| 6. Fittings and covers | Available fittings include horizontal bends, vertical inside and outside bends in 45° and 90°, equal and unequal tees, horizontal crosses, and equal, left-hand and right-hand reducers. Hut, flat and U-type covers are available. | Fittings datasheet with radius options; cover range |
| 7. Quality system and approvals | Does the manufacturer have ISO certification or utility and PSU vendor registrations? | Certificate copies; registration letters |
| 8. Lead time and delivery | What is the lead time for each finish? Where will the order be despatched from? What are the freight terms? | Written lead time on the quotation |
Two quotes for the “same” ladder tray can have very different prices. The difference usually comes from the specifications and from what the quotation includes.
Compare quotes only after confirming that the specifications and inclusions are the same.
Look out for these red flags in a quotation:
Aparna Rollform manufactures ladder cable trays at its plant in Patancheru, Telangana. The table below summarises Aparna Rollform’s manufacturing details, specifications, finishes and other available information.
| Check | Aparna Rollform |
|---|---|
| 1. Plant | Survey No. 815, AA/1, Patancheru, Rudraram Mandal, Telangana 502329 |
| 2. Specification | Rungs from 30 × 15 mm to 50 × 20 mm, spaced 250 mm to 300 mm centre to centre, with 20 × 10 mm slots. Supplied with welded or bolt-fitted rungs. |
| 3. Dimensions | Widths from 50 mm to 1,500 mm, runner heights from 50 mm to 120 mm, runner collars from 15 mm to 25 mm, and thickness from 1.6 mm to 3.0 mm. |
| 4. Coating | GI, 80–120 GSM to IS 277; hot-dip galvanised to IS 2629, IS 2633 and IS 4759; powder-coated, painted, aluminium and stainless steel. |
| 5. Fittings and covers | Horizontal bends and vertical inside and outside bends in 45° and 90°, equal and unequal tees, horizontal crosses, and equal, left-hand and right-hand reducers. Hut, flat and U-type covers are available. Please confirm the required cover sizes before ordering. |
| 6. Certifications | ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 |
| 7. Lead time and delivery | Supplied across India from Hyderabad. Lead time: 2 weeks to 45 days. |
Providing complete project details can help the manufacturer prepare a more accurate quotation and reduce follow-up questions. Please include these details:
Choosing the right ladder cable tray starts with comparing the specifications, finish, load capacity, and support span. Before placing an order, check the available test data, valid certifications, and fitting options. Confirm that the specifications meet your project requirements.
Aparna Rollform offers ladder cable tray solutions in different sizes, finishes, and configurations. Contact the team to discuss your project requirements.
No independent ranking names one company as the leading manufacturer. The market has national manufacturers as well as regional fabricators. Compare them on eight points: plant, construction, written dimensions, coating, tested load, fittings, certifications, and lead time. Aparna Rollform, the roll-forming division of Aparna Enterprises Limited, manufactures ladder cable trays at its plant in Patancheru, Telangana.
A ladder cable tray is an open cable support with two long side rails, called runners, joined by rungs at regular intervals. Cables rest on the rungs, and the open design lets air move freely around them. It is also called a cable ladder, and it is suitable for heavy power and control cables on long spans.
The price depends on thickness, runner height, rung size and spacing, finish and GSM, length basis (per metre or per piece), fittings, GST and freight. Marketplace prices cannot be compared directly unless the specifications and inclusions are the same.
Welded rungs make the tray one rigid assembly. Bolted rungs allow the parts to be coated before assembly, but the fasteners must match the finish. Aparna Rollform supplies both types.
Aparna Rollform makes ladder trays from 1.6 mm to 3.0 mm thick, which is about 16 SWG to 11 SWG. The thickness you need depends on the tray width, cable load and support span. Aparna Rollform does not conduct load testing or provide load test reports.
IEC 61537 gives the requirements and tests for cable tray and cable ladder systems. IS 2062, IS 1079 and IS 10748 cover the steel, while IS 277 covers pre-galvanised sheet. IS 2629, IS 4759, IS 2633 and IS 6745 cover hot-dip galvanising and its testing.
Aparna Rollform makes ladder cable trays in widths from 50 mm to 1,500 mm, with runner heights from 50 mm to 120 mm and runner collars from 15 mm to 25 mm. Rungs range from 30 × 15 mm to 50 × 20 mm and are spaced 250 mm to 300 mm centre to centre. The trays have 20 × 10 mm slots, are supplied with welded or bolt-fitted rungs, and come in thicknesses from 1.6 mm to 3.0 mm.
Yes. Available fittings include horizontal bends, vertical inside and outside bends in 45° and 90°, equal and unequal tees, horizontal crosses, and equal, left-hand and right-hand reducers. Hut, flat and U-type covers are also available. Please confirm the availability of the required cover sizes and fitting configurations before ordering.
Aparna Rollform is a cable tray manufacturer in India, producing perforated, ladder, solid-bottom and raceway cable trays in galvanised and powder-coated finishes. Explore the range or request a quote.
Aparna Rollform is a cable tray manufacturer in India, producing perforated, ladder, solid-bottom and raceway cable trays in galvanised and powder-coated finishes. Explore the range or request a quote.
Aparna Rollform is a cable tray manufacturer in India, producing perforated, ladder, solid-bottom and raceway cable trays in galvanised and powder-coated finishes. Explore the range or request a quote.
