C/Z Purlin Manufacturer & Supplier in Indore – Cold Roll Formed Sections for PEB, Warehouses & Industrial Structures
Looking for a reliable C/Z purlin manufacturer in Indore? Ajmera Metals Pvt. Ltd. manufactures precision cold roll formed C and Z purlins from high-tensile galvanized steel, supplying PEB contractors, warehouse developers, shed manufacturers, and industrial construction firms across Madhya Pradesh and pan-India. Our purlins are available in web heights from 50 mm to 300 mm, in plain and perforated configurations, cut to your exact length with pre-punched hole patterns as per your design. Call +91 70241-55341 or use the enquiry form below for a quick quote.
What Are C and Z Purlins?
C and Z purlins are cold-formed steel structural members used to support roof decks, wall cladding, and roof sheeting in steel-framed buildings. Produced by cold roll forming progressively bending high-tensile steel strip through forming rolls without heat they offer a consistent cross-section and superior strength-to-weight ratio versus hot-rolled alternatives. In metal building systems, purlins act as secondary structural members that transfer loads from roof or wall panels to the primary steel frame.
C Purlin vs Z Purlin – Which Should You Choose?
A C purlin has a channel-shaped cross-section with a web, two flanges, and two lips. Best suited for simple-span applications: garages, carports, mezzanine floors, wall girts, and buildings with spans up to 7.5 m.
A Z purlin has a Z-shaped cross-section where the flanges extend in opposite directions. This geometry allows Z purlins to be lapped (overlapped) at supports, creating a continuous structural member ideal for long spans in PEB roofs, warehouses, and godowns typically 7.5 m to 12 m and beyond.
C Purlin vs Z Purlin: Which Should You Choose?
Feature | C Purlin | Z Purlin |
Cross section | C-shape / channel | Z-shape / reverse channel |
Span type | Simple span (single bay) | Continuous / lapped span |
Overlap | Not over lappable | Can be lapped at supports |
Best for | Garages, carports, mezzanines, wall girts, smaller buildings | Large sheds, warehouses, PEB roofs, godowns, solar structures |
Typical span | Up to 7.5 m | 7.5 m to 12 m+ |
Installation | Slightly simpler – terminates at frame | Requires lapping at supports |
Cost | Generally lower for short spans | More economical for long spans |
Technical Specifications & Dimensions
Ajmera Metals manufactures C and Z purlins from high-tensile galvanized steel coils. All sections are produced on precision cold roll forming lines with hydraulic punching and automatic cut-to-length, ensuring tight dimensional tolerances suitable for PEB and structural applications.
C Purlin – Dimensions & Weight Chart
Section | Web Height (mm) | Flange Width (mm) | Lip (mm) | Thickness (mm) | Weight/m (kg) |
C100 | 100 | 50 | 15 | 1.6 – 2.5 | 1.88 – 2.93 |
C120 | 120 | 55 | 15 | 1.6 – 2.5 | 2.16 – 3.38 |
C150 | 150 | 65 | 15 | 1.6 – 3.0 | 2.78 – 5.22 |
C175 | 175 | 70 | 20 | 2.0 – 3.0 | 3.85 – 5.77 |
C200 | 200 | 75 | 20 | 2.0 – 3.0 | 4.50 – 6.75 |
C230 | 230 | 75 | 20 | 2.5 – 3.0 | 5.80 – 6.95 |
C250 | 250 | 80 | 25 | 2.5 – 3.0 | 6.42 – 7.70 |
C300 | 300 | 90 | 25 | 2.5 – 3.0 | 7.70 – 9.24 |
Note: Custom web heights, flange widths, and lip sizes available on request. All dimensions are nominal; actual sections may vary slightly based on order specifications.
Z Purlin – Dimensions & Weight Chart
Section | Web Height (mm) | Flange Width (mm) | Lip (mm) | Thickness (mm) | Weight/m (kg) |
Z100 | 100 | 50 | 15 | 1.6 – 2.5 | 1.80 – 2.82 |
Z150 | 150 | 65 | 15 | 1.6 – 2.5 | 2.70 – 4.22 |
Z175 | 175 | 70 | 20 | 2.0 – 3.0 | 3.70 – 5.55 |
Z200 | 200 | 75 | 20 | 2.0 – 3.0 | 4.35 – 6.52 |
Z230 | 230 | 75 | 20 | 2.5 – 3.0 | 5.60 – 6.72 |
Z250 | 250 | 80 | 25 | 2.5 – 3.0 | 6.20 – 7.44 |
Z300 | 300 | 90 | 25 | 2.5 – 3.0 | 7.40 – 8.88 |
Note: Z purlins are designed for lapping at supports. Lap length is typically 10-15% of the span. Pre-punched slot dimensions available as per client design drawings.
Material Grade & Standards — IS 811, ASTM A572, Yield Strength 345 MPa
Parameter | Specification |
Material | High-tensile galvanized steel (GI grade) / Carbon steel coil |
Indian Standard | IS 811 — Cold Formed Light Gauge Steel Structural Members |
International Grade | ASTM A572 Grade 50 / Equivalent high-tensile cold-formed grade |
Yield Strength | Minimum 345 MPa (50 ksi) – approx. 60% higher than hot-rolled mild steel |
Galvanizing Coating | Z275 (275 g/m² zinc coating) standard; Z600 available on request |
Surface Finish | Galvanized (corrosion-resistant), plain or pre-painted options available |
Length | Standard 6 m / 12 m; custom cut-to-length as per project requirement |
Punching | Plain (unpunched) or pre-punched (slots/holes) as per client drawing |
Range | Plain and perforated both available across all sections |
Applications
Pre-Engineered Buildings (PEB): Z purlins are the primary choice for PEB roofs their lapping ability lets engineers optimise frame spacing and reduce total structural weight. We supply to PEB contractors in Indore, Pithampur, Dewas, Bhopal, and pan-India with pre-punched hole patterns matching PEB design software outputs.
Warehouses & Industrial Sheds: Wide-span warehouses and godowns are the highest-volume application for Z purlins in India. C purlins serve as wall girts in the same structures. We supply to warehouse developers, shed fabricators, and construction contractors across Madhya Pradesh.
Solar Mounting Structures: C and Z purlins are critical horizontal rails in solar mounting designs, providing a stable, corrosion-resistant framework for the 25-year life of a solar installation. We supply C/Z purlins alongside our dedicated solar mounting sections for complete project packages.
Mezzanine Floors, Carports & Commercial Construction: C purlins are ideal for mezzanine decking supports, carports, garages, and verandas easy to connect to primary steel members and straightforward to erect.
Why Choose Ajmera Metals?
Manufacturer – not a reseller. Every section is cold roll formed in-house at our Indore facility. Direct manufacturer pricing, full quality traceability, no middleman.
Full range – 50 mm to 300 mm. Both plain (unpunched) and perforated (pre-punched) configurations across all web heights and thicknesses.
Custom lengths & punching. We produce to your exact length and punching pattern slot positions, hole diameters, and spacings programmed to your structural drawing. No minimum standard length applies.
IS 811 compliant, 345 MPa yield strength. All sections conform to IS 811 with a minimum yield strength of 345 MPa approximately 60% higher than hot-rolled mild steel.
Central India dispatch. Our Indore facility supplies Pithampur, Dewas, Ujjain, Bhopal, Mandideep, Ratlam, and all of India for bulk orders. Typical lead time: 3–7 days standard, 7–14 days custom.
Frequently Asked Questions
C purlins are simple-span sections for garages, mezzanines, and wall girts. Z purlins can be lapped at supports for continuous-span action in warehouses, PEB roofs, and solar structures. Both are cold roll formed from high-tensile GI steel and available in 50–300 mm web heights at Ajmera Metals.
We manufacture from 1.6 mm to 3.0 mm depending on web height and load requirement. Light-duty applications typically use 1.6–2.0 mm; heavy-duty PEB and warehouse use 2.5–3.0 mm. All sections conform to IS 811 with 345 MPa minimum yield strength.
Yes — plain (P), slotted (S), and dotted/punched (D) patterns are available. Pre-punched purlins eliminate on-site drilling and speed up erection for PEB, solar, and OEM assembly applications.
Yes — pan-India. We regularly supply Pithampur, Dewas, Bhopal, Mandideep, Ratlam, Nagpur, Ahmedabad, and PAN India for bulk orders. Contact us with your delivery location for a freight-inclusive quote.
For standard sizes in common thicknesses, smaller orders are accepted for local clients. Custom sections require a minimum production run — call us at +91 70241-55341 with your section, thickness, quantity, and delivery city for a specific MOQ and lead time.
Get a Free Quote for C/Z Purlin and Channels
- Call / WhatsApp: +91 70241-55341
- Email: info@ajmerametals.com
- Manufacturing Facility: Indore, Madhya Pradesh — Central India