Contact Platform Support
Help CenterSteel Channel & Channel Steel，Q195、Q215、Q235A/B/C/D、Q355B/C/D/E
Related Products
-
Steel Wire Rope & Steel Strand，GB/T 5224-2023、ASTM A416、EN10138NegotiableMOQ: 5 Metric Tons -
Silicon Steel，Grade: 50W470, 50W600, 50W800, 30Q120, 30Q130,NegotiableMOQ: 5 Metric Tons
-
Silicon Steel， Grade: 50W470, 50W600, 50W800, 30Q120, 30Q130,NegotiableMOQ: 5 Metric Tons
-
Steel Billet，Main Materials Q195, Q235B, Q355B, 20#, 45#, SS400, A36, S235JR,NegotiableMOQ: 1 Metric Ton
-
Steel Billet，Main Materials Q195, Q235B, Q355B, 20#, 45#, SS400, A36, S235JR,NegotiableMOQ: 1 Metric Ton
1. Product Overview
Channel steel, also known as U-channel / C-channel, features a U-shaped concave cross-section hot-rolled from steel billets. It is classified into three main types: hot rolled standard channel steel, hot rolled light channel steel and cold formed thin-wall channel steel, which are core load-bearing structural steel for construction projects. Integrated by vertical web and two side flanges, it owns strong vertical bending rigidity, and can be freely welded, drilled, cut and bent. It is commonly matched with I-beam and angle steel to build factory frames, equipment supports, bases and truck girders.
Core Product Advantages
Integral hot rolling forming, high section rigidity and excellent vertical bending resistance, less steel consumption under equal load;
Superior machinability, easy for hole drilling, splicing welding and custom cutting to shorten site construction time;
Full material grades including ordinary carbon steel & high-strength low alloy steel, applicable to dry indoor, open-air outdoor and low-temperature heavy-load conditions;
Complete size series covering small 5# light channel to heavy 40# channel, custom fixed-length cutting available;
Smooth rolling surface without internal defects such as delamination, crack and severe scarring, high finished product rate;
Diverse surface treatment options: anti-rust oil, sand blasting, hot-dip galvanizing, anti-corrosion for long-distance sea transportation;
Third-party SGS sampling inspection & customer on-site inspection supported, full ISO certifications and complete customs clearance documents available.
2. Product Classification & Performance Comparison
2.1 Hot Rolled Standard Channel Steel (Mainstream Engineering Material)
Executive Standard: GB/T706-2016 Hot Rolled Structural SteelProduction Process: High-temperature rolling of steel billets with standard inner slope on flanges, uniform thick section and high bearing capacityCommon Sizes: 5#,6.3#,8#,10#,12.6#,14a/b,16a/b,18a/b,20a/b,25a/b,30a/b,40a/bAppearance Feature: Original hot rolled black oxide surface, flat web, thick flanges with stable dimensional toleranceMechanical Property: High strength & outstanding impact resistance, ideal for medium & heavy load structuresApplication: Factory columns, equipment bases, bridge supports, steel platforms, semi-trailer girders
2.2 Hot Rolled Light Channel Steel
Executive Standard: GB/T706-2016Production Process: Narrower flanges & thinner web under same height, lighter self-weight and lower material consumptionCommon Sizes: 6.5#,8#,10#,12#,14#,16#,20# light seriesAppearance Feature: Thin integral section with same outline as standard channel, lower theoretical weightMechanical Property: Light weight & good plasticity, suitable for secondary light support componentsApplication: Light factory purlins, curtain wall keels, simple storage racks, indoor equipment supports
2.3 Cold Formed Thin-Wall C Channel (Light Decorative & Electromechanical Use)
Production Process: Cold bending of steel strip at room temperature without high-temperature rolling, ultra-thin wall thicknessCommon Sizes: C41×21, C41×41, C50×30 and other thin-wall C channelsAppearance Feature: Bright smooth surface, prefabricated long mounting holes for direct galvanizingMechanical Property: Lightest weight, only suitable for light load, forbidden for heavy bearing structuresApplication: Cable tray, photovoltaic support, pipeline hanger, indoor partition frame
Performance Comparison Table
| Comparison Item | Hot Rolled Standard Channel | Hot Rolled Light Channel | Cold Formed Thin-Wall C Channel |
|---|---|---|---|
| Forming Technology | High-temperature rolling from billet | Hot rolling with thinner section | Cold bending of steel strip |
| Section Thickness | Thick, high load capacity | Medium thickness, lighter weight | Ultra-thin wall |
| Impact & Bearing Capacity | Excellent, heavy load dedicated | Good, light engineering use | General, only light load |
| Machinability | Easy cutting, welding & drilling | Easy bending & cutting | Easy drilling with prefabricated holes |
| Cost Level | Medium, highest cost performance | Lower price | Lowest cost |
| Typical Application | Factory column, trailer, bridge | Purlin, curtain wall, light support | PV bracket, cable tray, pipeline hanger |
3. Main Material Grades & Executive Standards
3.1 Carbon Structural Steel Channel (General Construction & Light Equipment)
Grades: Q195, Q215, Q235A/B/C/DStandards: GB/T700, GB/T706-2016Overseas Equivalent: A36, S235JR, SS400Feature: Low carbon with excellent weldability and low cost, used for indoor factories, simple supports, municipal guardrails.
3.2 High Strength Low Alloy Channel (Outdoor, Low Temp & Heavy Load)
Grades: Q355B/C/D/E (Former Q345)Standards: GB/T1591, GB/T706-2016Overseas Equivalent: S355JR, ASTM A572 Gr50Feature: Manganese alloy reinforced, high yield strength, low temperature & wind pressure resistance, applied to large factories, trailers, bridges, wind power supports.
International Universal Standards
EU EN10279 (UPN / UPE European channel), US ASTM A6/A6M, JIS G3192; EN10204 3.1 mill test certificate available upon request.
4. Complete Specification Parameters
Size Naming RuleThe number represents web height (cm); a/b stands for different flange width & thickness under same height. Example: 10# = web height 100mm, 14a#/14b# same height with different wall thickness.
Conventional Size RangeSmall:5#,6.3#,8#,10#Medium:12.6#,14#,16#,18#,20#Heavy load large size:22#,25#,30#,36#,40#
Length StandardStandard fixed length:6m,9m,12m; custom cutting 2-12m acceptable, length tolerance ±50mm.
Dimensional ToleranceHeight & leg width tolerance ±1.0~2.0mm, straightness ≤1.5mm per meter, twist ≤2mm per meter.
Optional Surface TreatmentOriginal hot rolled black surface with anti-rust oil, mechanical sand blasting, hot-dip galvanizing (zinc coating 80-600g/㎡), anti-corrosion primer painting.
5. Reference Mechanical Properties (Q235B Hot Rolled Standard Channel)
Yield Strength ≥235MPa, Tensile Strength 375~500MPa
Elongation after fracture ≥21%, no crack after 180° cold bending test
Free of internal defects such as delamination, inclusion and subcutaneous crack
Q355B low alloy grade yield strength ≥355MPa, qualified for -20℃ low temperature impact test.
6. Industry Application Scope
6.1 Industrial Factory Steel Structure
Factory load-bearing column, roof purlin, equipment operation platform, steel stair, workshop protective support
6.2 Municipal Traffic & Vehicle Manufacturing
Semi-trailer & truck carriage girder, road guardrail support, overpass load-bearing frame, street lamp base, traffic sign bracket
6.3 Construction Machinery & Equipment Manufacturing
Machine tool base, conveyor frame, auxiliary support for mining machinery, hydraulic equipment load-bearing frame
6.4 New Energy & Photovoltaic Industry
Ground support for photovoltaic power station, auxiliary wind power support, energy storage cabinet frame
6.5 Curtain Wall, Electromechanical & Storage
Building curtain wall keel, cable tray, pipeline hanger, heavy storage rack, simple steel partition
6.6 Bridge & Infrastructure Engineering
Secondary load-bearing components of small bridges, temporary construction support, foundation pit reinforcement frame
7. Delivery, Packaging, QC & Trade Terms
7.1 Delivery Lead Time
Standard spot hot rolled channel: Shipment within 5-7 working days from Tianjin Port.Heavy channel above 30# & custom hot-dip galvanized channel: 7-15 working days production cycle.
7.2 Export Packaging
Medium & small sizes 5#-20#: Bundled with high-tensile steel strips, 3-8 tons per bundle, wrapped with waterproof anti-rust film;
Large size 25#-40#: Bulk loaded in 40HC high cube container, wooden spacers laid at bottom to avoid scratch & collision on edges during transit;
Separate waterproof wrapping for galvanized channel, custom shipping mark printing supported.
7.3 Inspection & Certificates
Original melting report & MTC test report delivered with goods; SGS/BV third-party sampling NDT inspection available; full ISO9001 certification & complete customs clearance documents supplied together.
7.4 Trade Terms
Payment term: 30% TT deposit, full balance before shipment, L/C not accepted. Free return & replacement for non-artificial quality defects on material, dimension and surface.
Send Inquiry to This Supplier
You May Also Like
-
Steel Round Bar/Steel Bar， Q235B, Q355B, 10#, 20#, 35#, 45#, 20Cr, 40Cr, 20CrMo, 42CrMo,NegotiableMOQ: 5 Metric Tons
-
Steel Round Bar， Q235B, Q355B, 10#, 20#, 35#, 45#, 20Cr, 40Cr, 20CrMo, 42CrMo,NegotiableMOQ: 5 Metric Tons
-
Steel Wire Rope，High Carbon Steel, 45#, 65#, 70#, 72A, 77ANegotiableMOQ: 1 Piece
-
Steel Billet，Main Materials Q195, Q235B, Q355B, 20#, 45#, SS400, A36, S235JR,NegotiableMOQ: 5 Metric Tons
-
Galvanized Channel Steel，Q235B,Q355B,ASTM A36, A572 Gr.50 / EN S235JR, S355JRNegotiableMOQ: 2 Metric Tons
-
Square Steel,GB/T702,ASTM A36/A108,EN S235JR, JIS SS400NegotiableMOQ: 2 Metric Tons
-
Steel Rebar，HRB400/HRB500、Grade 60、B500BNegotiableMOQ: 4 Metric Tons
-
Steel Rebar，HRB400/HRB500、Grade 60、B500BNegotiableMOQ: 5 Hectares
-
Steel Rebar，HRB400/HRB500、Grade 60、B500BNegotiableMOQ: 5 Metric Tons
-
Steel Strand- China: GB/T 5224-2023 (Prestressed), YB/T 5004 (Galvanized). - International: ASTM A416 (USA), EN 10138 (Europe), JIS G3536 (Japan).NegotiableMOQ: 5 Metric Tons
