CEE and ZED PURLINS & GIRTS FOR PEB STEEL STRUCTURES

Secondary members (comprised mostly of Purlins & Girts) are cold-formed from hot rolled steel coils ranging in thickness from 1.5 mm to 3.0 mm for “Z” shapes, and in 2.0 mm and 2.5 mm for “C” shapes (lipped channels).

Painted secondary members are cold-formed from hot rolled steel coils conforming to ASTM A 607 Grade 50 or ASTM A 1011M HSLAS Grade 340 Class 1 Type 1 (or equivalent) having a minimum yield strength of 34.0 kN/cm2; and then factory painted with standard primer.

Galvanized secondary members are cold-formed from steel coils conforming to ASTM A 653M Grade SS 340 Class 1 (or equivalent), with zinc coating to Z275 (G 90) designation (275 g/m2), having a minimum yield strength of 34.0 kN/cm2 (50 ksi).

CEE TYPE COLD ROLLFORMED SECTIONS FOR SOLAR STRUCTURES

Cold Rollformed from hot rolled steel coils conforming to IS 2062 E350 in thickness 2.00 / 2.50 / 3.00 mm, online / offline punched as per customers requirement, are being hot dip galvanized to Zn coating thickness 80-100 microns (550 g/m2 min.) on each side of sheet metal surface.

Cold-formed from steel coils conforming to ASTM A 653M Grade SS 340 Class 1 (or equivalent), with zinc coating to Z275 (G 90) designation (275 g/m2), having a minimum yield strength of 34.0 KN/cm2 (50 ksi). Purlins / Girts specified differently by customer in terms of size, grade, zinc coating, mechanical properties shall be produced and delivered at mutually agreed terms.

Cold Rollformed “C” Lipped Channel Steel – Purlins and Girts

C-sections are used in single spans and un-lapped continuous spans in structural framework applications. Some common uses are floor joists, semi-trailer rails, stair frames, building structural framework and PV Solar Module Mounting Structures.

D-Width, B-Depth, L-Lip, t-Bare sheet steel thickness, R5-Internal radius of corners (1.5 x t)
MODEL SIZE LINEAR WEIGHT: (kg / mtr)
D x B x L (mm) t: 1.50 mm t: 2.0 mm t: 2.5 mm t: 3.0 mm
LCH-80 80 x 40 x 20 2.21 2.89 3.53
LCH-79 100 x 40 x 20 3.2 3.93
LCH-78 100 x 50 x 20 3.52 4.32
LCH-77 120 x 50 x 20 3.83 4.71
LCH-76 120 x 60 x 20 4.15 5.1
LCH-75 120 x 70 x 20 4.46 5.5
LCH-74 140 x 50 x 20 4.15 5.1 6.03
LCH-73 160 x 50 x 20 4.46 5.5 6.5
LCH-72 160 x 60 x 20 4.77 5.89 6.97
LCH-71 160 x 70 x 20 5.09 6.28 7.44
LCH-70 180 x 50 x 20 4.77 5.89 6.97
LCH-69 180 x 60 x 20 5.09 6.28 7.44
LCH-68 180 x 70 x 20 5.4 6.67 7.91
LCH-67 200 x 60 x 20 5.4 6.67 7.91
LCH-66 200 x 70 x 20 5.72 7.07 8.38
LCH-65 200 x 80 x 25   7.65  
LCH-64 220 x 70 x 20 6.03 7.46 8.86
LCH-63 220 x 75 x 20 6.19 7.65 9.09
LCH-62 250 x 70 x 20 6.5 8.05 9.56
LCH-61 250 x 75 x 20 6.66 8.24 9.8

Dimensional Tolerance: t: +/-0.03 mm, D: ±2 mm, B: ±2 mm, L: ±1 mm, Length: +15 mm

Punching of holes and slots as per customer’s drawing

Open Channels:

The main purpose of cold-formed channels in structures is to serve as supporting members. Lip channels, open channels, Z-sections and top hats are popular in the construction industry. In the trailer manufacturing industry open channels such as top rails and side rails are commonly used. Open channels are easily customizable by customers to suit their specific needs and therefore one is not limited to certain industries or designs.

Lip and open channels

Lip and open channels are mainly used (and referred to) as Purlins in steel structures. It is used as an alternative for hot rolled channels. Other industries which use lip and open channels are shelving and racking, trailer manufacturers, construction, agricultural, etc. In the construction industry lip channels as well as open channels are mainly used in buildings as a horizontal member that provides support to the roof decking or sheets.

Customer specific open channel

Advantage of cold-formed open channels is that it is not limited to any specs. Customers can design open channels to suit their needs

Dimensional Tolerance: t: +/-0.03 mm, h: ±2 mm, B: ±2 mm, Length: +15 mm

Punching of holes and slots as per customer’s drawing