Altimexor Metal Altimexor Metal

China Wholesale Uncoated Steel Sheet Factory & Exporter

High-Yield Industrial Grade Steel Sheet Fabrication | Custom Specifications | Strict Compliance & International Quality Standardizations

Leading The Industrial Supply Chain: Dongguan Altimexor Metal Co., Ltd.

As a globally trusted steel enterprise, Dongguan Altimexor Metal Co., Ltd. seamlessly integrates modern steel manufacturing, customized supply chains, precise processing, and large-scale export operations. Designed to serve structural contractors, industrial machinery manufacturers, and global steel wholesalers, we represent stability and high engineering standards in raw material processing.

Our extensive product portfolio includes cold-rolled steel coils, hot-rolled steel plates, structural sections, and coated materials. From custom-gauge 1.0mm Thickness SPCC Cold Rolled Mild Steel Sheets to robust boiler plates like the Hot Rolled Steel Plate P235gh, we maintain complete control over standard specifications, gauge tolerances, and metallurgy. Guided by our corporate philosophy of "credibility first, advanced service, commitment, and customer first," we ensure that every batch of raw and fabricated steel shipped complies with international testing standards.

150K+
Tons Annual Output
85+
Export Destinations
0.02mm
Thickness Tolerance
100%
MTC Certified

Since our inception, our focus has stayed on long-term relationships through the principles of "integrity management, mutual benefit, and common development". With localized supply footprints in Southeast Asia, the Middle East, North America, South America, Europe, Africa, and Australia, we leverage our proximity to major ports to deliver custom-length and custom-finished metal products when they are needed most.

Uncoated Steel Sheet Technical Specification Matrix

In the procurement of industrial steel, understanding structural grade variations is essential. Uncoated steel sheets—covering SPCC, hot-rolled MS plate, and pressure-vessel grade P235GH—deliver distinct properties designed for cold forming, high-temperature vessels, or general construction. Below is a detailed technical reference detailing the chemical profiles and mechanical behavior of our core grades:

Steel Grade Primary Standard Carbon Max (%) Tensile Strength (MPa) Yield Strength (MPa) Key Performance Intent
SPCC (Cold Rolled) JIS G3141 0.15 Min 270 - Exceptional ductility, high surface quality for precision stampings.
Q235 (Hot/Cold Rolled) GB/T 700 0.22 370 - 500 Min 235 Versatile structural material with strong weldability and ease of machining.
P235GH (Boiler Grade) EN 10028-2 0.16 360 - 480 Min 235 Excellent high-temperature resistance, optimized for pressure vessels.
430 / 304 / 316L ASTM A240 0.03 - 0.08 Min 515 Min 205 Extreme corrosion resistance, high tensile capacity for demanding projects.

SEO Insight & Information Gain: Uncoated steel surfaces must be selected with precise protection steps. We ship sheets either dry (for immediate coating or processing) or light-oiled (using high-evaporation rust inhibitors that prevent oxidation during long marine transit, but wash off easily in degreasing baths).

Global Industry Trends Shaping Uncoated Steel Procurement

The international market for uncoated steel sheets is undergoing a massive transformation. Buyers are no longer evaluating options solely based on base cost; technical evolution, sustainability regulations, and chemical composition accuracy are driving procurement decisions.

01

Decarbonization

Increasing integration of electric arc furnace (EAF) steelmaking to reduce Scope 3 carbon footprints, aligning with EU CBAM policies.

02

Micro-Alloying

Addition of trace elements (Niobium, Titanium, Vanadium) to enhance yield strength without increasing the thickness profile.

03

Advanced Surface Prep

Adoption of laser texturing (LT) to generate consistent surface roughness (Ra values) for optimal paint adhesion.

In addition to these chemical improvements, regional supply changes have forced procurement managers to rely on multi-certified mills. Dongguan Altimexor Metal Co., Ltd. continuously adapts to these movements by providing sheets certified across European, American, Japanese, and Chinese national standards simultaneously.

Macro-Scale Structural Solutions

Industrial projects demand distinct processing pipelines. Our manufacturing facility develops tailor-made steel systems that resolve functional difficulties across major industry verticals:

Automotive Stamping & Custom Drawing

Utilizing high-ductility SPCC sheets with controlled grain structure orientation. This limits anisotropy and cracking when drawing complex chassis components, deep-draw housings, or precision electrical enclosures.

Boiler, Pressure Vessel & Petrochemical Containers

Processing hot-rolled P235GH and boiler-grade carbon steels to withstand prolonged thermal fatigue and pressurized environments. We supply full trace certificates (EN 10204 3.1) stating ladle analyses and impact test validations.

Heavy Infrastructure & Civil Engineering Shapes

Aligning sheet supply with structural sections (H-beams, I-columns, structural channels) to ensure compatible welding coefficients, enabling rapid on-site assembly and structural durability.

Quality Control Framework and Export Logistics

Exporting raw steel sheets requires strict attention to detail in packaging and verification. Standard shipping containers face fluctuating thermal zones, introducing the risk of condensation and oxidation. To protect uncoated steel, our factory uses a multi-layered barrier packaging system:

QC

1. Chemical Assay Verification

Every heat of steel is subjected to optical emission spectrometry (OES) testing to guarantee carbon, manganese, phosphorus, and sulfur stay within strict limits.

PKG

2. Anti-Corrosion Wrap

Sheets are bound with VCI (Volatile Corrosion Inhibitor) paper, wrapped in high-density polyethylene sheeting, and strapped with high-tensile steel bands.

LOG

3. Moisture Elimination

Industrial silica desiccant bags are packed inside the metal envelope of the coil or sheet bundle to capture residual interior moisture during sea transit.

This strict approach ensures that when your order of Q235 Ms Steel Plates or SPCC Cold Rolled Sheets arrives at your fabrication facility, it remains clean, rust-free, and ready for processing.

Frequently Asked Technical Questions (FAQ)

What is the distinction between dry and oiled uncoated steel sheet delivery?

Dry steel sheets are supplied with zero oil treatment, making them ideal for operations where cleaning steps are restricted, though they must be processed quickly to avoid rust. Oiled steel sheets receive a rust-preventative oil coating that protects them for up to 6 months during shipping, requiring simple chemical degreasing before painting or welding.

How does Dongguan Altimexor Metal Co., Ltd. verify thickness tolerances?

We utilize inline non-contact thickness measurement systems (x-ray or laser gauging) on the cold-reduction and cut-to-length lines. This allows us to guarantee precision tolerances (e.g., within +/- 0.02mm on 1.0mm thickness SPCC) that meet JIS and ASTM requirements.

Can Q235 steel plates be utilized for pressure vessels?

No, general structural carbon steel like Q235 lacks the verified high-temperature properties and chemical limits of pressure-vessel steels. For boiler and pressurized environments, we recommend utilizing designated grades like Hot Rolled Steel Plate P235gh under EN 10028-2 specifications.

What packaging measures are taken for ocean freight shipments?

We pack all shipments in seaworthy containers. Coils and sheets are wrapped in VCI protective paper, encased in heavy metal protection bands, placed on reinforced timber or steel skids, and secured using heavy-duty nylon lashing to prevent shift damage during transport.

Is custom structural steel fabrication supported?

Yes. Beyond supplying raw sheets and coils, we provide customized structural fabrication including punching, bending, welding, and painting for I-beams, H-beams, and complex columns.