High Quality Mild Steel Plate Q195 Q235 S235jr S355jr Hot Rolled Carbon Steel Plate
| Item | Specification |
| Product Name | Mild Steel Plate / Hot Rolled Carbon Steel Plate |
| Standard | GB/T 700, EN 10025-2, ASTM A36 (Optional) |
| Steel Grades | Q195, Q235B, Q235C, S235JR, S275JR, S355JR |
| Material Type | Low Carbon Steel / Mild Steel |
| Manufacturing Process | Hot Rolled |
| Thickness | 1.5 mm – 300 mm (Customized Available) |
| Width | 1000 mm – 4000 mm |
| Length | 2000 mm – 12000 mm (Customized Available) |
| Surface Treatment | Black Surface, Shot Blasting, Painting, Galvanized (Optional) |
| Edge Type | Mill Edge / Cut Edge |
| Tolerance | According to EN 10029 / ASTM Standards |
| Technique | Hot Rolling, Controlled Rolling |
| Inspection | Mill Test Certificate (MTC), SGS/BV Third-Party Inspection Available |
| Packing | Standard Export Seaworthy Packing, Steel Straps, Waterproof Wrapping |
| Delivery Term | FOB, CIF, CFR, DDP/DDU |
| Application | Construction, Machinery Manufacturing, Bridges, Shipbuilding, Industrial Structures |
| Gauge No. | Thickness (inch) | Thickness (mm) | Typical Applications |
| 22 Ga | 0.0299" | 0.76 mm | Thin steel panels, light fabrication |
| 20 Ga | 0.0359" | 0.91 mm | Sheet metal, equipment covers |
| 18 Ga | 0.0478" | 1.21 mm | General fabrication, machinery parts |
| 16 Ga | 0.0598" | 1.52 mm | Structural components, brackets |
| 14 Ga | 0.0747" | 1.90 mm | Frames, supports, industrial fabrication |
| 12 Ga | 0.1046" | 2.66 mm | Machinery, construction panels |
| 11 Ga | 0.1196" | 3.04 mm | Heavy sheet applications |
| 10 Ga | 0.1345" | 3.42 mm | Structural fabrication |
| 9 Ga | 0.1495" | 3.80 mm | Heavy-duty components |
| 8 Ga | 0.1644" | 4.18 mm | Industrial structures |
| 7 Ga | 0.1793" | 4.55 mm | Heavy fabrication |
| 6 Ga | 0.1943" | 4.94 mm | Equipment manufacturing |
| 5 Ga | 0.2092" | 5.31 mm | Structural steel parts |
| 4 Ga | 0.2242" | 5.69 mm | Steel fabrication |
| 3 Ga | 0.2391" | 6.07 mm | Structural plates |
| 2 Ga | 0.2576" | 6.54 mm | Heavy steel structures |
| 1 Ga | 0.2813" | 7.15 mm | Industrial applications |
| 0 Ga | 0.3125" | 7.94 mm | Heavy plate applications |
| Common Hot Rolled Carbon Steel Plate Thickness Range | ||
| Thickness (mm) | Gauge Reference | Common Uses |
| 3 mm | Approx. 11 Ga | Machinery, fabrication |
| 4 mm | Approx. 8–9 Ga | General structures |
| 5 mm | Approx. 5–6 Ga | Frames, platforms |
| 6 mm | Approx. 3 Ga | Structural components |
| 8 mm | Approx. 0 Ga | Buildings, equipment |
| 10 mm | Heavy Plate | Steel structures, bridges |
| 12 mm | Heavy Plate | Industrial structures |
| 16 mm | Heavy Plate | Columns, beams, foundations |
| 20 mm | Heavy Plate | Heavy engineering |
| 25 mm | Heavy Plate | Bridges, machinery |
| 30–100 mm | Heavy Plate | Infrastructure, mining, energy projects |
Core Characteristics of Q235 Carbon Steel Plate
Machinability
Q235 carbon steel features low hardness and outstanding ductility, enabling straightforward forming, bending and all kinds of fabrication work. The material can be freely shaped without cracking during machining.
Mechanical Performance
Hot rolling takes advantage of steel’s high-temperature softening characteristic to refine its internal grain structure, resulting in denser metallographic texture and upgraded overall mechanical performance. Under sustained high heat and rolling pressure, inherent internal flaws including air voids, microcracks and loose structures get compacted and fused together.
Surface Condition
Hot rolled plates come with a comparatively rough surface finish. Thick mill scale forms naturally throughout the high-temperature rolling procedure, which leads to limited surface smoothness in raw state.
Strength & Toughness Balance
Hot rolled Q235 delivers moderate tensile strength paired with excellent toughness and plasticity. Most medium-thickness steel plates adopt this material, making it ideal for projects prioritizing high formability.
Thickness Range Advantage
Hot rolled steel products support much thicker gauges, while cold rolled steel is generally limited to thin, lightweight sheets.
Common Application Scenarios
As a reliable Q235 Carbon Steel Plate Company , we provide plates widely adopted for building structural frames, atmospheric corrosion resistant components and automotive structural parts. They are also widely processed into general machinery accessories and high-pressure gas containers.
Construction Sector
Our steel products serve core building engineering scenarios, including load-bearing steel frameworks, building main frames, highway and pedestrian bridges, large factory warehouse constructions, as well as foundation base slabs.
Machinery Production
The steel plates fit custom fabrication work for heavy machinery accessories, machine tool base supports, pressure vessel fittings and all kinds of metal processing manufacturing jobs.
Transport & Civil Infrastructure
Wide applications cover railway engineering frameworks, hull construction for shipyards, energy facility construction and custom metal components for mining machinery.
Note:
1.Free sampling, 100% after-sales quality assurance, Support any payment method;
2.All other specifications of round carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from ROYAL GROUP.
High hardness: carbon steel plate due to its high carbon content, so its hardness is much higher than ordinary steel;
1. Vehicle Selection Based on Weight
Steel plates have high density and heavy mass. Heavy trucks are used for delivery; vehicle models and loading schemes are tailored to cargo weight. All transport equipment must comply with national safety regulations, and carriers need complete shipping certifications.
2. Protective Packaging Standards
Thoroughly check plate surfaces for tiny damages before packing and repair all flaws. Custom steel protective covers are suggested to avoid scratches and dampness during transit.
3. Safe Route Planning
Pick flat, stable main roads. Avoid mountain trails and narrow country roads to prevent rollover accidents and cargo loss.
4. Flexible Time Arrangement
Set aside extra buffer time for emergencies. Schedule shipments during off-peak traffic hours for faster delivery.
5. On-Road Safety Measures
Drivers must fasten seatbelts, inspect trucks before departure, watch road conditions closely and place warning markers on dangerous road sections.
Q1: What steel grades do you provide for hot rolled carbon steel plates?
We supply mainstream grades including Q195, Q235B, S235JR, S275JR and S355JR. These grades suit general structure fabrication, machinery manufacturing and various engineering projects.
Q2: What standards do your carbon steel plates comply with?
Our products conform to major global industry standards:
EN 10025-2: S235JR, S275JR, S355JR
GB/T 700: Q195, Q235 series
ASTM A36: American structural steel specification
Custom third-party inspection is available upon request.
Q3: What sizes and thicknesses can you supply?
Our standard size range covers diverse demands:
Thickness: 3mm–100mm (max custom thickness up to 300mm)
Width: 1000mm–4000mm
Length: 2000mm–12000mm
We offer full custom sizing and cutting services for project orders.
Q4: How do you ensure product quality?
Every batch undergoes strict pre-shipment inspection. We provide complete quality documents:
Mill Test Certificate (MTC)
Chemical composition & mechanical property test reports
Dimensional and surface quality inspection records
SGS, BV and other third-party verification services are supported.
Q5: Are the plates weldable and processable?
Yes. Our hot rolled carbon steel plates feature excellent weldability and machinability. They support multiple processing methods: welding, cutting, bending, drilling, CNC machining, laser and plasma cutting.
Q6: What surface finishes are available?
We provide flexible surface treatment options to fit different usage needs:
Original hot rolled black surface
Shot blasted, painted and galvanized finishes
Custom anti-corrosion coatings
Q7: Can you provide samples and inspection reports?
Free product samples, official MTC certificates and full inspection reports are available. We also support pre-shipment third-party inspections by authoritative institutions.
Q8: What is your production lead time?
Standard orders take 15–25 working days. The exact cycle depends on steel grade, size, quantity and customization needs. We offer real-time order production and shipping updates.
Q9: How do you pack products for overseas shipping?
We adopt export-standard packaging for long-distance marine transportation:
Steel strip bundling + waterproof wrapping
Edge protection to avoid damage
Container or bulk vessel loading
Custom product marking as required
Q10: Do you accept small orders or only bulk purchases?
We support both small trial orders and large bulk project orders. Standard sizes are in stock for fast delivery, while customized products are available for mass procurement.
ROYAL GROUP
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
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