Z purlins

Gram Bangla Tubes Ltd (GBTL) manufactures Z purlins by roll forming in Sonargaon, Narayanganj, Bangladesh, in the standard size 150x65x20 mm, in 2.0 and 2.5 mm thickness.

Z purlins from Gram Bangla Tubes Ltd. (GBTL) are Z shaped steel sections for roof framing and solar mounting structures in Bangladesh. The standard size is Z purlin 150x65x20 mm, in 2.0 or 2.5 mm thickness. That is a 150 mm web, two 65 mm flanges and two 20 mm lips.

You can choose GP pre-galvanized or MS black Z purlins, and hot dip galvanizing is available on request. Orders for the standard size start at 2 MT, and custom sizes need a full coil run of 20 MT. Request a quote with thickness, finish, quantity in MT and delivery district.

Solutions: Solar mounting, Construction and infrastructure

Photos are representative. Finish and size may differ from the item shown.

Z purlin sizes

One row per catalog item. Open the item for its full specification, and weight per metre where a size table is published.

Z purlins: sizes, wall, length, finish and order route
Product	Size	Wall	Length	Finish	Order
Z Purlin 150x65x20 mm	150x65x20 mm	2.0 and 2.5 mm	6 m	Pre-galvanized (GP), MS black, Hot dip galvanized, on request	MOQ from 2 MT

Z purlin questions

Are C purlins or Z purlins better for long roof runs?

Z purlins often suit long roof runs better than C purlins. Z sections can nest and overlap at each support, so the purlins work as a continuous member across several bays. C purlins suit single spans and edge members. GBTL makes Z purlin 150x65x20 mm and C purlins in 100 and 120 mm depths.

Is a 2.0 mm or 2.5 mm Z purlin right for my roof?

GBTL makes Z purlin 150x65x20 mm in both 2.0 mm and 2.5 mm thickness. The 2.5 mm Z purlin is heavier and stiffer, so it suits longer spans or higher loads. Your structural engineer should confirm the Z purlin thickness from the roof design.

Can GBTL make Z purlins in sizes other than 150x65x20?

GBTL quotes custom Z purlin sizes on a full coil run. The minimum order for a custom Z purlin size is 20 MT. Send the section dimensions, thickness and quantity for a quote. The standard Z purlin 150x65x20 mm starts at 2 MT.

Do Z purlins need galvanizing for outdoor solar structures?

Z purlins in MS black need painting or coating before outdoor use. GP pre-galvanized Z purlins carry zinc from the strip, but cut ends need protection outdoors. For heavier protection, GBTL offers hot dip galvanizing after fabrication on request. The Z purlin coating spec is shared with buyers for a named project.

What length does GBTL Z purlin 150x65x20 come in?

GBTL Z purlin 150x65x20 mm comes in 6 m lengths in both 2.0 and 2.5 mm thickness. Include the length, thickness, finish and quantity in MT in your quote request. The standard Z purlin minimum order is 2 MT.