Cold-Formed U Channel
Products: 12
Buy Cold-Formed Steel Channel in Europe
At UTMK, you can order cold-formed channels (both equal and unequal leg types) manufactured according to GOST 8278-83 and GOST 8281-80. We provide a wide range of profiles with web heights from 25 to 410 mm, produced from St3ps and 09G2S steel grades. Our services include high-precision cutting and bending to meet your exact specifications. Available via self-pickup in Warsaw, Kraków, Poznań, and Łódź, or through delivery across the EU (for orders from 1 ton).
Explore our current availability and pricing for cold-formed steel channels in the catalog above. We act as your reliable full-cycle partner, offering technical expertise to handle outsourced complexity for your most challenging engineering projects. To place an order or request a custom project estimation, please contact our sales department.
Technical Characteristics
| Parameter | Value |
|---|---|
| Web Height | 25 – 410 mm |
| Steel Grades | St3ps, 09G2S |
| Profile Type | Equal leg, Unequal leg |
| Manufacturing Standards | GOST 8278-83, GOST 8281-80, Specifications |
| Wall Thickness | Thin-walled (up to 5 mm), Thick-walled (over 5 mm) |
| Accuracy Class | High (A), Enhanced (B), Ordinary (V) |
Difference Between Cold-Formed and Hot-Rolled Channels
The primary visual and structural distinction is the rounded outer corners. Unlike hot-rolled channels which feature sharp edges and potential flange tapers, the cold-formed profile maintains a uniform thickness throughout the entire cross-section. This characteristic makes it significantly lighter while retaining high bending stiffness, which is critical for weight-optimized structural frames.
The geometry of these profiles ensures an even load distribution along the entire length of the component. The absence of weld seams in the integral profile structure significantly enhances the overall reliability of the metalwork. Key classification parameters include the production method (cold or hot-rolled feedstock), leg symmetry, and rolling precision levels.
Cold-Formed Channel Range: GOST 8278-83 and GOST 8281-80
Our inventory features both standard channels compliant with GOST 8278 / 8281 and specialized profiles manufactured according to custom Technical Specifications (TS) or EN 10162. Dimensions not found in the national standard tables are classified as Custom Sections (tailor-made profiles), maintaining strict structural integrity and geometric precision. All weights provided are theoretical and for reference purposes only.
Characteristics and weight of equal-leg cold-formed channel (GOST 8278-83 / EN 10162)
| Size | Height (mm) | Flange width (mm) | Thickness (mm) | Bend radius (mm) | Weight 1 m (kg) | Standard |
|---|---|---|---|---|---|---|
| 25х26х2 | 25 | 26 | 2 | 3 | 1,092 | |
| 25х30х2 | 25 | 30 | 2 | 3 | 1,218 | |
| 28х27х2,5 | 28 | 27 | 2,5 | 4 | 1,423 | Manufacturer's TS |
| 30х25х3 | 30 | 25 | 3 | 5 | 1,611 | Manufacturer's TS |
| 30х30х2 | 30 | 30 | 2 | 3 | 1,296 | Manufacturer's TS |
| 32х25х3 | 32 | 25 | 3 | 5 | 1,658 | |
| 32х32х2 | 32 | 32 | 2 | 3 | 1,39 | |
| 38х95х2,5 | 38 | 95 | 2,5 | 3 | 4,305 | Manufacturer's TS |
| 40х20х2 | 40 | 20 | 2 | 3 | 1,139 | |
| 40х20х3 | 40 | 20 | 3 | 5 | 1,611 | |
| 40х30х2 | 40 | 30 | 2 | 3 | 1,453 | |
| 40х30х2,5 | 40 | 30 | 2,5 | 3 | 1,793 | |
| 40х40х2 | 40 | 40 | 2 | 3 | 1,767 | |
| 40х40х2,5 | 40 | 40 | 2,5 | 3 | 2,185 | |
| 40х40х3 | 40 | 40 | 3 | 5 | 2,553 | |
| 42х42х4 | 42 | 42 | 4 | 6 | 3,49 | Manufacturer's TS |
| 43х45х2 | 43 | 45 | 2 | 3 | 1,971 | |
| 45х25х3 | 45 | 25 | 3 | 5 | 1,965 | Manufacturer's TS |
| 45х31х2 | 45 | 31 | 2 | 3 | 1,563 | Manufacturer's TS |
| 48х70х5 | 48 | 70 | 5 | 7 | 6,666 | Manufacturer's TS |
| 50х30х2 | 50 | 30 | 2 | 3 | 1,61 | |
| 50х30х2,5 | 50 | 30 | 2,5 | 3 | 1,989 | |
| 50х32х2,5 | 50 | 32 | 2,5 | 3 | 2,068 | Manufacturer's TS |
| 50х40х2 | 50 | 40 | 2 | 3 | 1,924 | |
| 50х40х2,5 | 50 | 40 | 2,5 | 3 | 2,382 | |
| 50х40х3 | 50 | 40 | 3 | 4 | 2,809 | |
| 50х40х4 | 50 | 40 | 4 | 6 | 3,615 | |
| 50х47х6 | 50 | 47 | 6 | 9 | 5,732 | Manufacturer's TS |
| 50х50х2,5 | 50 | 50 | 2,5 | 3 | 2,774 | |
| 50х50х3 | 50 | 50 | 3 | 4 | 3,28 | Manufacturer's TS |
| 50х50х4 | 50 | 50 | 4 | 6 | 4,243 | Manufacturer's TS |
| 50х60х4 | 50 | 60 | 4 | 10 | 4,763 | |
| 60х26х2,5 | 60 | 26 | 2,5 | 4 | 2,011 | Manufacturer's TS |
| 60х30х2,5 | 60 | 30 | 2,5 | 3 | 2,185 | |
| 60х30х3 | 60 | 30 | 3 | 5 | 2,553 | |
| 60х32х2,5 | 60 | 32 | 2,5 | 3 | 2,264 | |
| 60х32х3 | 60 | 32 | 3 | 4 | 2,668 | |
| 60х32х4 | 60 | 32 | 4 | 6 | 3,427 | |
| 60х40х2 | 60 | 40 | 2 | 3 | 2,081 | |
| 60х40х3 | 60 | 40 | 3 | 4 | 3,045 | |
| 60х50х3 | 60 | 50 | 3 | 5 | 3,495 | |
| 60х60х3 | 60 | 60 | 3 | 4 | 3,987 | |
| 60х60х4 | 60 | 60 | 4 | 6 | 5,185 | |
| 60х80х3 | 60 | 80 | 3 | 5 | 4,908 | Manufacturer's TS |
| 60х90х5 | 60 | 90 | 5 | 7 | 8,707 | Manufacturer's TS |
| 63х21х2,2 | 63 | 21 | 2,2 | 3 | 1,677 | |
| 65х75х4 | 65 | 75 | 4 | 6 | 6,284 | |
| 65х40х4 | 65 | 40 | 4 | 10 | 3,978 | |
| 68х27х1 | 68 | 27 | 1 | 2 | 0,9252 | |
| 70х30х2 | 70 | 30 | 2 | 3 | 1,924 | |
| 70х40х3 | 70 | 40 | 3 | 5 | 3,26 | |
| 70х50х3 | 70 | 50 | 3 | 5 | 3,731 | |
| 70х50х4 | 70 | 50 | 4 | 6 | 4,871 | |
| 70х60х4 | 70 | 60 | 4 | 6 | 5,499 | |
| 70х65х4 | 70 | 65 | 4 | 10 | 5,705 | |
| 78х46х6 | 78 | 46 | 6 | 9 | 6,957 | |
| 80х25х4 | 80 | 25 | 4 | 6 | 3,615 | |
| 80х32х4 | 80 | 32 | 4 | 6 | 4,055 | |
| 80х35х4 | 80 | 35 | 4 | 6 | 4,243 | |
| 80х40х2,5 | 80 | 40 | 2,5 | 3 | 2,97 | |
| 80х40х3 | 80 | 40 | 3 | 4 | 3,516 | |
| 80х50х4 | 80 | 50 | 4 | 6 | 5,185 | |
| 80х60х3 | 80 | 60 | 3 | 4 | 4,458 | |
| 80х60х4 | 80 | 60 | 4 | 6 | 5,813 | |
| 80х60х6 | 80 | 60 | 6 | 9 | 8,37 | |
| 80х80х3 | 80 | 80 | 3 | 4 | 5,4 | |
| 80х80х4 | 80 | 80 | 4 | 6 | 7,069 | |
| 80х85х4 | 80 | 85 | 4 | 6 | 7,383 | |
| 80х100х6 | 80 | 100 | 6 | 9 | 12,14 | |
| 90х50х3,5 | 90 | 50 | 3,5 | 5 | 4,869 | |
| 90х54х5 | 90 | 54 | 5 | 7 | 7,059 | |
| 90х100х2,5 | 90 | 100 | 2,5 | 4 | 5,505 | |
| 90х115х5 | 90 | 115 | 5 | 12 | 11,68 | |
| 100х40х2,5 | 100 | 40 | 2,5 | 3 | 3,363 | |
| 100х40х3 | 100 | 40 | 3 | 5 | 3,966 | |
| 100х50х3 | 100 | 50 | 3 | 4 | 4,458 | |
| 100х50х4 | 100 | 50 | 4 | 6 | 5,813 | |
| 100х50х5 | 100 | 50 | 5 | 7 | 7,137 | |
| 100х50х6 | 100 | 50 | 6 | 9 | 8,37 | |
| 100х60х3 | 100 | 60 | 3 | 4 | 4,929 | |
| 100х60х4 | 100 | 60 | 4 | 6 | 6,441 | |
| 100х80х3 | 100 | 80 | 3 | 4 | 5,871 | |
| 100х80х4 | 100 | 80 | 4 | 6 | 7,697 | |
| 100х80х5 | 100 | 80 | 5 | 7 | 9,492 | |
| 100х100х3 | 100 | 100 | 3 | 5 | 6,792 | |
| 100х100х6 | 100 | 100 | 6 | 9 | 13,08 | |
| 100х160х4 | 100 | 160 | 4 | 6 | 12,72 | |
| 100х50х7 | 100 | 50 | 7 | 18 | 9,207 | |
| 100х120х8 | 100 | 120 | 8 | 20 | 19,05 | |
| 104х20х2 | 104 | 20 | 2 | 3 | 2,144 | |
| 106х50х4 | 106 | 50 | 4 | 6 | 6,002 | |
| 108х70х6 | 108 | 70 | 6 | 9 | 10,63 | |
| 110х26х2,5 | 110 | 26 | 2,5 | 3 | 3,01 | |
| 110х50х4 | 110 | 50 | 4 | 6 | 6,127 | |
| 110х50х5 | 110 | 50 | 5 | 7 | 7,53 | |
| 110х100х4 | 110 | 100 | 4 | 6 | 9,267 | |
| 120х25х4 | 120 | 25 | 4 | 6 | 4,871 | |
| 120х50х3 | 120 | 50 | 3 | 5 | 4,908 | |
| 120х50х4 | 120 | 50 | 4 | 6 | 6,441 | |
| 120х50х6 | 120 | 50 | 6 | 9 | 9,312 | |
| 120х60х4 | 120 | 60 | 4 | 6 | 7,069 | |
| 120х60х5 | 120 | 60 | 5 | 7 | 8,707 | |
| 120х60х6 | 120 | 60 | 6 | 9 | 10,25 | |
| 120х70х5 | 120 | 70 | 5 | 7 | 9,492 | |
| 120х80х4 | 120 | 80 | 4 | 6 | 8,325 | |
| 120х80х5 | 120 | 80 | 5 | 7 | 10,28 | |
| 120х75х4 | 120 | 75 | 4 | 10 | 7,903 | |
| 120х90х7 | 120 | 90 | 7 | 18 | 14,7 | |
| 120х105х8 | 120 | 105 | 8 | 20 | 18,43 | |
| 130х135х8 | 130 | 135 | 8 | 20 | 22,82 | |
| 140х40х2,5 | 140 | 40 | 2,5 | 3 | 4,148 | |
| 140х40х3 | 140 | 40 | 3 | 5 | 4,908 | |
| 140х60х3 | 140 | 60 | 3 | 5 | 5,85 | |
| 140х60х5 | 140 | 60 | 5 | 7 | 9,492 | |
| 140х60х6 | 140 | 60 | 6 | 9 | 11,2 | |
| 140х70х5 | 140 | 70 | 5 | 7 | 10,28 | |
| 140х80х4 | 140 | 80 | 4 | 6 | 8,953 | |
| 140х80х5 | 140 | 80 | 5 | 7 | 11,06 | |
| 140х60х4 | 140 | 60 | 4 | 10 | 7,589 | |
| 145х65х3 | 145 | 65 | 3 | 5 | 6,204 | |
| 145х75х5 | 145 | 75 | 5 | 12 | 10,7 | |
| 148х25х4 | 148 | 25 | 4 | 6 | 5,75 | |
| 160х40х2 | 160 | 40 | 2 | 3 | 3,651 | |
| 160х40х3 | 160 | 40 | 3 | 5 | 5,379 | |
| 160х40х5 | 160 | 40 | 5 | 7 | 8,707 | |
| 160х50х2,5 | 160 | 50 | 2,5 | 4 | 4,916 | |
| 160х50х4 | 160 | 50 | 4 | 6 | 7,697 | |
| 160х50х5 | 160 | 50 | 5 | 7 | 9,492 | |
| 160х50х6 | 160 | 50 | 6 | 9 | 11,2 | |
| 160х60х2,5 | 160 | 60 | 2,5 | 4 | 5,308 | |
| 160х60х3 | 160 | 60 | 3 | 5 | 6,321 | |
| 160х60х4 | 160 | 60 | 4 | 6 | 8,325 | |
| 160х60х5 | 160 | 60 | 5 | 7 | 10,28 | |
| 160х60х6 | 160 | 60 | 6 | 9 | 12,14 | |
| 160х70х4 | 160 | 70 | 4 | 6 | 8,953 | |
| 160х80х2,5 | 160 | 80 | 2,5 | 3 | 6,11 | |
| 160х80х3 | 160 | 80 | 3 | 5 | 7,263 | |
| 160х80х4 | 160 | 80 | 4 | 6 | 9,581 | |
| 160х80х5 | 160 | 80 | 5 | 7 | 11,85 | |
| 160х80х6 | 160 | 80 | 6 | 9 | 14,02 | |
| 160х100х3 | 160 | 100 | 3 | 5 | 8,205 | |
| 160х100х6 | 160 | 100 | 6 | 9 | 15,91 | |
| 160х120х5 | 160 | 120 | 5 | 7 | 14,99 | |
| 160х120х6 | 160 | 120 | 6 | 9 | 17,79 | |
| 160х160х6 | 160 | 160 | 6 | 9 | 21,56 | |
| 160х75х8 | 160 | 75 | 8 | 20 | 17,17 | |
| 170х60х4 | 170 | 60 | 4 | 6 | 8,639 | |
| 170х70х5 | 170 | 70 | 5 | 7 | 11,45 | |
| 170х70х6 | 170 | 70 | 6 | 9 | 13,55 | |
| 180х40х3 | 180 | 40 | 3 | 5 | 5,85 | |
| 180х40х4 | 180 | 40 | 4 | 6 | 7,697 | |
| 180х50х4 | 180 | 50 | 4 | 6 | 8,325 | |
| 180х70х6 | 180 | 70 | 6 | 9 | 14,02 | |
| 180х80х4 | 180 | 80 | 4 | 6 | 10,21 | |
| 180х80х5 | 180 | 80 | 5 | 7 | 12,63 | |
| 180х80х6 | 180 | 80 | 6 | 9 | 14,96 | |
| 180х100х5 | 180 | 100 | 5 | 7 | 14,2 | |
| 180х100х6 | 180 | 100 | 6 | 9 | 16,85 | |
| 180х130х8 | 180 | 130 | 8 | 12 | 25,76 | |
| 180х70х5 | 180 | 70 | 5 | 12 | 11,68 | |
| 180х70х7 | 180 | 70 | 7 | 18 | 15,8 | |
| 180х80х8 | 180 | 80 | 8 | 20 | 19,05 | |
| 185х100х3 | 185 | 100 | 3 | 5 | 8,794 | |
| 200х50х3 | 200 | 50 | 3 | 5 | 6,792 | |
| 200х50х4 | 200 | 50 | 4 | 6 | 8,953 | |
| 200х80х4 | 200 | 80 | 4 | 6 | 10,84 | |
| 200х80х5 | 200 | 80 | 5 | 7 | 13,42 | |
| 200х80х6 | 200 | 80 | 6 | 9 | 15,91 | |
| 200х100х3 | 200 | 100 | 3 | 5 | 9,147 | |
| 200х100х6 | 200 | 100 | 6 | 9 | 17,79 | |
| 200х180х6 | 200 | 180 | 6 | 9 | 25,33 | |
| 200х60х4 | 200 | 60 | 4 | 10 | 9,473 | |
| 200х100х5 | 200 | 100 | 5 | 12 | 14,82 | |
| 205х38х2,5 | 205 | 38 | 2,5 | 3 | 5,345 | |
| 206х75х6 | 206 | 75 | 6 | 14 | 15,52 | |
| 210х57х4 | 210 | 57 | 4 | 6 | 9,707 | |
| 250х35х3 | 250 | 35 | 3 | 5 | 7,263 | |
| 250х60х3 | 250 | 60 | 3 | 5 | 8,441 | |
| 250х60х4 | 250 | 60 | 4 | 6 | 11,15 | |
| 250х60х5 | 250 | 60 | 5 | 7 | 13,81 | |
| 250х60х6 | 250 | 60 | 6 | 9 | 16,38 | |
| 250х125х6 | 250 | 125 | 6 | 9 | 22,5 | |
| 250х25х3 | 250 | 25 | 3 | 7 | 6,752 | |
| 250х90х8 | 250 | 90 | 8 | 20 | 24,71 | |
| 270х100х7 | 270 | 100 | 7 | 10 | 24,42 | |
| 280х60х3,9 | 280 | 60 | 3,9 | 6 | 11,8 | |
| 280х140х5 | 280 | 140 | 5 | 7 | 21,27 | |
| 280х60х6 | 280 | 60 | 6 | 14 | 17,59 | |
| 300х80х6 | 300 | 80 | 6 | 9 | 20,62 | |
| 300х100х8 | 300 | 100 | 8 | 12 | 29,53 | |
| 310х100х6 | 310 | 100 | 6 | 9 | 22,97 | |
| 380х65х6 | 380 | 65 | 6 | 9 | 22,97 | |
| 400х95х8 | 400 | 95 | 8 | 12 | 35,18 | |
| 410х65х6 | 410 | 65 | 6 | 9 | 24,38 |
Characteristics and weight of unequal-leg cold-formed channel (GOST 8281-80 / EN 10162)
| Size | Height (mm) | Larger flange width (mm) | Smaller flange width (mm) | Thickness (mm) | Bend radius (mm) | Weight 1 m (kg) | Standard |
|---|---|---|---|---|---|---|---|
| 32х22х12х3 | 32 | 22 | 12 | 3 | 5 | 1,261 | Manufacturer's TS |
| 32х50х20х4 | 32 | 50 | 20 | 4 | 6 | 2,709 | Manufacturer's TS |
| 37х60х32х3 | 37 | 60 | 32 | 3 | 5 | 2,745 | Manufacturer's TS |
| 35х35х26х2,5 | 35 | 35 | 26 | 2,5 | 4 | 1,681 | Manufacturer's TS |
| 43х106х32х3 | 43 | 106 | 32 | 3 | 5 | 3,97 | Manufacturer's TS |
| 45х25х15х3 | 45 | 25 | 15 | 3 | 5 | 1,709 | Manufacturer's TS |
| 50х40х12х2,5 | 50 | 40 | 12 | 2,5 | 4 | 1,798 | Manufacturer's TS |
| 50х48х15х3 | 50 | 48 | 15 | 3 | 5 | 2,368 | Manufacturer's TS |
| 50х55х30х2 | 50 | 55 | 30 | 2 | 3 | 1,989 | Manufacturer's TS |
| 50х60х32х3 | 50 | 60 | 32 | 3 | 5 | 3,051 | Manufacturer's TS |
| 50х92х60х3 | 50 | 92 | 60 | 3 | 5 | 4,464 | Manufacturer's TS |
| 65х55х20х2,5 | 65 | 55 | 20 | 2,5 | 4 | 2,544 | Manufacturer's TS |
| 65х65х40х4 | 65 | 65 | 40 | 4 | 6 | 4,844 | Manufacturer's TS |
| 67х65х35х3 | 67 | 65 | 35 | 3 | 5 | 3,64 | Manufacturer's TS |
| 70х80х50х4 | 70 | 80 | 50 | 4 | 6 | 5,786 | Manufacturer's TS |
| 80х80х50х4 | 80 | 80 | 50 | 4 | 6 | 6,1 | Manufacturer's TS |
| 90х80х50х4 | 90 | 80 | 50 | 4 | 6 | 6,414 | Manufacturer's TS |
| 100х80х50х4 | 100 | 80 | 50 | 4 | 6 | 6,728 | |
| 100х80х50х5 | 100 | 80 | 50 | 5 | 7 | 8,281 | |
| 100х100х60х6 | 100 | 100 | 60 | 6 | 9 | 11,16 | Manufacturer's TS |
| 100х180х35х8 | 100 | 180 | 35 | 8 | 12 | 17,86 | Manufacturer's TS |
| 120х60х50х5 | 120 | 60 | 50 | 5 | 7 | 8,281 | Manufacturer's TS |
| 130х108х50х4 | 130 | 108 | 50 | 4 | 6 | 8,549 | Manufacturer's TS |
| 135х50х36х4 | 135 | 50 | 36 | 4 | 6 | 6,446 | |
| 140х70х30х4 | 140 | 70 | 30 | 4 | 6 | 7,042 | Manufacturer's TS |
| 144х160х90х6 | 144 | 160 | 90 | 6 | 9 | 17,47 | Manufacturer's TS |
| 160х50х30х3 | 160 | 50 | 30 | 3 | 5 | 5,359 | |
| 160х80х50х5 | 160 | 80 | 50 | 5 | 7 | 10,64 | |
| 200х50х30х4 | 200 | 50 | 30 | 4 | 6 | 8,298 | |
| 270х90х72х8 | 270 | 90 | 72 | 8 | 12 | 25,21 | Manufacturer's TS |
| 270х90х80х6 | 270 | 90 | 80 | 6 | 9 | 19,63 | Manufacturer's TS |
| 300х80х40х4 | 300 | 80 | 40 | 4 | 6 | 12,69 | |
| 300х80х40х5 | 300 | 80 | 40 | 5 | 7 | 15,74 | |
| 50х50х25х4 | 50 | 50 | 25 | 4 | 10 | 3,323 | Manufacturer's TS |
Advantages of Cold-Formed Channel
- High Strength-to-Weight Ratio: The lightweight nature of the profile, combined with excellent bending stiffness, allows for a reduction in total metal consumption by up to 20%, optimizing project budgets without compromising safety.
- Superior Geometric Precision: Consistent wall thickness and the absence of surface irregularities simplify the joining of structural nodes, ensuring a perfect fit in complex modular systems.
- Enhanced Structural Integrity: The cold-forming process eliminates the need for longitudinal welds, which improves the product's resistance to corrosion and prevents stress concentration under fatigue loads.
- Excellent Material Weldability: The use of St3ps and 09G2S steel grades guarantees strong, reliable connections without the risk of cracking, which is essential for bespoke industrial projects.
- Aesthetic and Functional Design: Rounded corners and smooth finishes reduce the risk of injury during handling and allow the profile to be integrated into visible architectural designs and industrial furniture.
Applications of Cold-Formed Channel
- Pre-engineered Buildings (PEB): Creation of load-bearing purlins, internal partition frameworks, and roofing support systems for hangars and warehouses.
- Transport and Machinery: Manufacturing of chassis frames, specialized platforms, and body components for railway wagons and heavy-duty vehicles.
- Renovation and Strengthening: Reinforcing existing floor slabs and building facades where it is vital to minimize the additional load on the foundation.
- Industrial Storage Systems: Production of high-capacity racking, commercial displays, and durable support frames for industrial machinery.
- Residential and DIY Construction: Building long-lasting carports, greenhouses, gates, and staircase stringers for home improvement projects.
Expert Consultation on Cold-Formed Profile Selection and Specification
Do you require professional assistance in selecting the optimal channel size or technical advice on implementing a non-standard engineering solution? Our specialists provide dedicated partner support at every stage—from selecting the appropriate steel grade (St3ps, 09G2S) to organizing efficient logistics. Contact a UTMK expert today to discuss your project requirements and receive a comprehensive quote for high-precision metal processing.
FAQ
UTMK Experts Answer Your Questions about Cold-Formed Channels
Can a cold-formed channel be used as a primary load-bearing beam?
Cold-formed channels are ideally suited for purlins and uprights in lightweight structures, where they significantly reduce overall weight. However, for the primary load-bearing beams of multi-story buildings subjected to massive vertical forces, hot-rolled channels are generally preferred. The final choice must be dictated by structural engineering calculations according to relevant GOST or EN standards.
What is the difference between St3ps and 09G2S steel for this profile?
St3ps is a versatile carbon steel intended for standard operating environments. In contrast, 09G2S is a low-alloy steel offering higher strength and exceptional cold resistance (down to -70°C), making channels of this grade indispensable for northern climates or structures operating under high-stress conditions.
How do I choose between equal-leg and unequal-leg channels?
Equal-leg profiles (GOST 8278-83) are the industry standard for most construction frames due to their symmetrical load distribution. Unequal-leg channels (GOST 8281-80) are used in specific engineering nodes, such as in the automotive industry or specialized architectural forms where differing flange widths are required for mounting or structural balance.
Does the lack of weld seams in a cold-formed profile affect its lifespan?
Yes, the absence of longitudinal welds and beads in the cold-formed channel structure eliminates weak zones that are typically susceptible to corrosion and fatigue failure. This inherent integrity significantly extends the operational lifespan of the metal structure and improves its reliability under dynamic loading conditions.
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