Z purlins (zed purlins) roll-formed in-house at Taloja MIDC, cut to length and slot-punched to your drawing.
Web depths 140 mm to 300 mm, thickness 1.00 mm to 3.00 mm, GI and HR, in 250 MPa and 350 MPa grades (IS 2062 E250 / E350). Section size is changed through the PLC, so you get the section your structural engineer specified, not the nearest standard size.
Table of Contents
- 1. What Is a Z Purlin?
- 2. Why Choose a Z Purlin Instead of a C Purlin?
- 3. Where Z Purlins Are Used
- 4. Z Purlin Specifications
- 5. Size Chart and Weight per Metre
- 6. Z Purlin Price in Mumbai and Navi Mumbai
- 7. GI or HR: Which to Specify?
- 8. Slotted Hole Punching
- 9. Why Buy From Acier Steel
- 10. Where We Supply
- 11. Frequently Asked Questions
Acier Steel Pvt. Ltd. manufactures Z purlins (zed purlins) at our Taloja MIDC plant in Navi Mumbai, on a fully automatic roll forming line with servo drive and PLC control. We supply GI and HR Z purlins cut to length and slot-punched to your drawing, with dispatch within 5 to 10 days.
Figure 1: Z purlin (zed purlin) section, manufactured in-house at Taloja MIDC. Web depths 140 to 300 mm, GI and HR.
| Web depth | 140 mm – 300 mm |
| Thickness | 1.00 mm – 3.00 mm |
| Material | GI (galvanized) and HR / MS (hot rolled) |
| Steel grade | 250 MPa and 350 MPa (IS 2062 E250 / E350) |
| Zinc coating | 80 / 120 / 275 GSM |
| Length | Cut to order, up to 12 metres |
| Punching | Slotted holes punched in line, to your drawing |
| Dispatch | Within 5 – 10 days |
What Is a Z Purlin?
A Z purlin, also called a zed purlin or zee section, is a cold roll-formed secondary structural member shaped like the letter Z, with a stiffening lip on each flange edge. Z purlins sit on top of the main rafters or trusses and carry the roof sheeting, transferring roof loads back into the primary frame.
Beyond supporting the cladding, purlins act as struts that help resist longitudinal wind and seismic forces, and provide lateral bracing to the compression flange of the main frame, which increases the capacity of the primary structure itself.
At Acier Steel, Z purlin lips are formed at 135 degrees (45 degrees from the flange), which is what allows adjacent sections to nest and lap over the supports.
Why Choose a Z Purlin Instead of a C Purlin?
The difference is not cosmetic. It changes how the member behaves across a multi-bay building.
Z purlins lap over the support. Because the Z profile nests into itself, adjacent purlins overlap at each rafter and are bolted through the lap. This creates a continuous structural arrangement across the whole roof rather than a series of independent simply-supported members.
C purlins cannot lap this way. A C section sits flat on the support and works as a simply supported member between two frames. That makes it right for wall girts, eave struts, mezzanine framing and smaller single-bay sheds, but not for continuous multi-bay roofs.
This is why Z purlins are the standard choice on PEB warehouse and industrial roofs across India, while C purlins are used for wall cladding support and secondary framing. We manufacture both. See our purlins overview for the full range.
Where Z Purlins Are Used
- Pre-Engineered Buildings (PEB) and industrial sheds
- Warehouses, logistics parks and distribution centres
- Factory and manufacturing units
- Cold storage facilities
- Solar mounting structures
- Mezzanine floors and canopies
- Agricultural and poultry sheds
- Commercial complexes and long-span roofs
Figure 2: Typical Z purlin applications: PEB roof and warehouse, industrial shed, cold storage, solar mounting structures.
Z Purlin Specifications
Figure 3: How to read a purlin size. D = web depth, B = flange width, L = lip, t = thickness. Example: Z 200 x 60 x 20 x 2.0.
| Parameter | Specification |
|---|---|
| Profile | Z section (zed purlin), lipped |
| Web depth | 140 mm – 300 mm |
| Flange width | 30 mm – 100 mm (maximum 50% of web depth) |
| Lip | 10 mm – 25 mm |
| Lip angle | 135 degrees (45 degrees from flange) |
| Thickness | 1.00 mm – 3.00 mm |
| Material | GI (galvanized) · HR / MS (hot rolled) |
| Steel grade | 250 MPa · 350 MPa (IS 2062 E250 / E350) |
| Zinc coating | 80 GSM · 120 GSM · 275 GSM |
| Length | Custom cut to order, up to 12 metres |
| Punching | Slotted holes: 14×24 mm, 12×20 mm, 18×25 mm |
| Raw material | JSW · AMNS · JSPL, with Mill Test Certificates |
| Manufacturing tolerance | Web +/-1 mm · Flange +/-1.5 mm · Lip +/-2 mm · Length +/-5 mm |
Flange is limited to 50% of the web depth. At a Z140 web the maximum flange is 70 mm; from Z200 upward the full 100 mm flange is available.
Size Chart and Weight per Metre
Column headings are thickness in mm. Weight in kg per running metre.
| Section (Web x Flange x Lip) mm | 1.00 | 1.20 | 1.50 | 1.60 | 2.00 | 2.50 | 3.00 |
|---|---|---|---|---|---|---|---|
| 150 x 65–75 x 18–24 | 2.45 | 2.94 | 3.68 | 3.93 | 4.91 | 6.13 | 7.36 |
| 180 x 70–75 x 19–25 | 2.75 | 3.30 | 4.12 | 4.40 | 5.50 | 6.87 | 8.24 |
| 200 x 50 x 11–20 | 2.45 | 2.94 | 3.68 | 3.93 | 4.91 | 6.13 | 7.36 |
| 200 x 60–65 x 20–25 | 2.75 | 3.30 | 4.12 | 4.40 | 5.50 | 6.87 | 8.24 |
| 200 x 75–80 x 17–22 | 2.94 | 3.53 | 4.42 | 4.71 | 5.89 | 7.36 | 8.83 |
| 250 x 70–75 x 18–23 | 3.27 | 3.93 | 4.91 | 5.24 | 6.55 | 8.18 | 9.82 |
| 300 x 50 x 13–23 | 3.27 | 3.93 | 4.91 | 5.24 | 6.55 | 8.18 | 9.82 |
| 300 x 90 x 15–25 | 3.93 | 4.71 | 5.89 | 6.28 | 7.85 | 9.81 | 11.78 |
Weights are approximate and for indication only. For an exact weight and quotation, send us your requirement.
How to calculate your Z purlin tonnage
Example: 40 pieces of Z200 x 60 x 20 x 2.00 mm, each 6 m long = 240 running metres x 5.50 kg/m = 1,320 kg (1.32 MT).
Z Purlin Price in Mumbai and Navi Mumbai
Z purlin prices move with the steel coil market, so rates are quoted against current coil cost. As a general guide:
- GI Z purlins: approximately Rs 80 – Rs 96 per kg
- HR / MS Z purlins: approximately Rs 65 – Rs 80 per kg
Four things move the price within those ranges: zinc coating, steel grade, thickness and order quantity.
Cut-to-length and slot punching are included in our quoted rate. Because we roll-form in-house at Taloja MIDC and buy coil directly from the mills, you are buying at factory rates with no trader margin in between.
WhatsApp us for today’s Z purlin rate: send your section size, thickness, grade, coating, length and quantity for a same-day quotation.
GI or HR Z Purlins: Which Should You Specify?
| GI (Galvanized) | HR / MS (Hot Rolled) | |
|---|---|---|
| Corrosion resistance | Built into the steel | Requires site painting |
| Maintenance | Minimal | Periodic repainting |
| Best suited to | Coastal, humid and chemical environments; long-life structures | Sheltered inland structures; cost-sensitive projects |
| Relative cost | Higher | Economical |
In coastal Mumbai and Navi Mumbai conditions, galvanized Z purlins are strongly recommended. Painted HR sections typically fail first at bolt holes and cut edges, where the paint film is thinnest and the steel is exposed.
Steel grade: 250 MPa or 350 MPa
250 MPa is the standard grade, suitable for smaller sheds, wall girts and lighter loading. 350 MPa is a high-tensile grade that can allow lighter sections for the same design requirements, which is why most PEB companies specify 350 MPa for roof purlins.
Zinc coating: 80, 120 or 275 GSM
| Coating | Recommended for |
|---|---|
| 80 GSM | Interior structures, dry inland locations, budget or temporary projects |
| 120 GSM | Standard industrial sheds and warehouses, the usual choice |
| 275 GSM | Coastal belts, chemical and fertiliser plants, high-humidity environments |
The zinc layer is what stands between the structure and red rust. Within roughly 15 km of the coast, or in any chemical MIDC zone, we recommend not going below 120 GSM.
Slotted Hole Punching: Why It Matters on Site
All our Z purlins are punched in line during forming, so hole positions stay accurate over the full length of every section rather than drifting the way site-drilled holes do.
We punch slotted holes as standard, in three sizes: 12 x 25 mm, 14 x 25 mm, 18 x 25 mm and 20 x 25 mm.
Why slots rather than round holes: a slot gives the erection team a few millimetres of adjustment at every connection. That absorbs the normal fabrication and setting-out tolerance in the main frame, so your crew bolts up instead of re-drilling at height.
- Minimum distance between holes: 50 mm
- Standard edge distance: 35 mm
- Hole positions punched as per your drawing
- Plain un-punched Z purlins available on request
Z purlins are formed in a single continuous pass: coil enters the decoiler, runs through the forming stations, is slot-punched in line and cut to length at the end.
Why Buy Z Purlins From Acier Steel
- Delivered on the date we promise: 98% on time, over half of it ahead of schedule.
- Bolts up first time: slots punched in line, to your drawing.
- Your section, not our nearest size: PLC size change, no tooling delay.
- Every kilo you pay for: Mill Test Certificate (MTC) with every dispatch.
- BIS-certified raw material: JSW, AMNS and JSPL coil, with traceability.
- Nothing waits on raw material: 40 years in the steel industry, sourcing any grade or thickness at short notice.
- Sections that sit flat: web +/-1 mm, lip +/-2 mm.
- The whole package: Z purlins, sag rods, MS plates for cleats, roofing and decking sheets, polycarbonate, screws and ventilators from one source.
- Low freight, easy loading: Taloja MIDC in the heart of Navi Mumbai; trailers load directly at our plant.
🔗 Product Spotlight: Z Purlins by Acier Steel
Roll-formed in-house at Taloja MIDC on an automatic servo-driven, PLC-controlled line with in-line slot punching, cut to your exact schedule.
- Range: 140 mm to 300 mm web, 1.00 mm to 3.00 mm, GI and HR.
- Grades: 250 MPa and 350 MPa (IS 2062 E250 / E350).
- Also see: Z & C purlins overview, colour coated roofing sheets, metal decking sheets and self drilling screws.
👉 Send Your Drawing & Get a Quote
40 years in the steel industry · Mill Test Certificates · Dispatch within 5–10 days from Taloja MIDC
Figure 4: Our automatic Z and C purlin roll forming line, servo driven, PLC controlled, with in-line slot punching.
Z Purlin Supply Across Maharashtra
We supply Z purlins from our Taloja MIDC plant across Navi Mumbai, Mumbai, Thane, Panvel, Taloja, Kalamboli, Bhiwandi, Kalyan, Dombivli, Ambernath, Badlapur, Khopoli, Karjat, Raigad, Uran, Alibag, Pen, Pune, Chakan, Nashik, Palghar, Boisar, Vasai and Virar, with dispatch to Vapi, Surat, Daman and Goa.
Being located in Taloja MIDC, in the heart of Navi Mumbai’s industrial belt, keeps transport cost competitive and allows trailers to load directly at our plant.
Send your section size, thickness, grade, coating, length, quantity and hole details for a same-day quotation.
📞 Call Us Now 💬 WhatsApp UsFrequently Asked Questions
What is the difference between a Z purlin and a C purlin?
A Z purlin can lap over the support because the Z profile nests into itself, creating a continuous member across multiple bays. A C purlin sits flat on the support and works as a simply supported member. Z purlins are standard on multi-bay industrial roofs; C purlins suit wall girts, eave struts and mezzanine framing.
What sizes of Z purlin do you manufacture?
Web depths from 140 mm to 300 mm, flange 30 to 100 mm (maximum 50% of web depth), lip 10 to 25 mm, in thicknesses from 1.00 mm to 3.00 mm.
What is the weight of a Z200 purlin?
A Z200 x 60 x 20 section weighs approximately 4.12 kg/m at 1.50 mm, 5.50 kg/m at 2.00 mm, 6.87 kg/m at 2.50 mm and 8.24 kg/m at 3.00 mm.
What is the current Z purlin price per kg?
GI Z purlins are approximately Rs 80 to 96 per kg and HR Z purlins approximately Rs 65 to 80 per kg, depending on zinc coating, steel grade, thickness and quantity.
Do you supply Z purlins with pre-punched holes?
Yes. We punch slotted holes in line during forming, in 14×24 mm, 12×20 mm and 18×25 mm. Plain un-punched sections are available.
Which zinc coating should I choose for a coastal site?
For coastal belts, chemical plants and high-humidity environments we recommend 275 GSM. For standard industrial sheds 120 GSM is the usual choice, and 80 GSM suits dry inland or budget projects.
What is the maximum length of Z purlin you can supply?
Up to 12 metres, cut to your exact schedule. Longer lengths mean fewer laps and fewer bolted connections on site.
How long does delivery take?
Standard dispatch is within 5 to 10 days from our Taloja MIDC plant. 98% of our orders are delivered on the promised date.
Do you supply sag rods and cleats with Z purlins?
Yes. We supply sag rods and MS plates for cleats along with your purlin order, plus roofing sheets, decking sheets, flashings, self-drilling screws, polycarbonate sheets and turbo ventilators.
Are you a Z purlin manufacturer or a trader?
We are a manufacturer. Z purlins are roll-formed in-house at our Taloja MIDC plant in Navi Mumbai on our own automatic line.
Contact: sales@aciersteelpvtltd.com | +91 86557 03383 / +91 99308 85934 | Factory: A6/1, Taloja MIDC, Navi Mumbai, Maharashtra 410208