Direct manufacturer-to-enterprise structural products. Explore our high-grade materials catalog engineered for global industrial standards.
Ningbo Puppet Steel Co., Ltd. is a leading industrial-tier Steel Sheet Manufacturer and Cold Rolled, Hot Rolled & Galvanized Steel Supplier. We dedicate our advanced production lines and logistics models to delivering high-grade structural metal and customized fabrication solutions. Our scope spans key critical industrial segments: civil infrastructure, aerospace tooling, transport containerization, automotive structure matrices, heavy machinery, power generation grids, and electronic appliances.
Based out of the deep-water logistical corridor of Ningbo, China, we operate top-tier modern steel cold reduction mills, continuous galvanizing lines (CGL), and integrated surface treatment workshops. We manage complete dimensional execution across premium cold-rolled, hot-rolled, zinc-plated, structural carbon, stainless steel alloy, and silicon electrical sheets. In an era where supply integrity defines market success, Ningbo Puppet Steel provides OEM/ODM material supply security and compliance-driven international custom fabrication.
Integrating industrial automation and deep-water port proximity to optimize metal sourcing pipelines.
Our plants deploy continuous computerized roll-forming and thickness-monitoring technologies (AGC system) to maintain tolerances under ±0.02mm across sheets, preventing mechanical gauge variance.
We secure clean basic oxygen steelmaking (BOS) slabs with strict control on impurity elements like phosphorus and sulfur, enhancing high yield strength and crack propagation resistance.
Proximity to one of the world's premier cargo hubs reduces inland transit times, minimizes freight costs, and mitigates material degradation from excessive logistics handling.
Data-proven structural capacity built for enterprise supply scale.
B2B procurement programs require strict compliance with international mechanical properties and dimensional tolerances. We produce steel configurations mapping directly to equivalent global steel designation systems.
| Steel Sheet Type | Chinese Standard (GB) | US Standard (ASTM) | European Standard (EN) | Japanese Standard (JIS) |
|---|---|---|---|---|
| Cold Rolled Commercial Sheet | GB/T 5213 DC01 | ASTM A1008 CS Type B | EN 10130 DC01 | JIS G3141 SPCC |
| Hot Dipped Galvanized (Structural) | GB/T 2518 S250GD | ASTM A653 Grade 33 | EN 10346 S250GD+Z | JIS G3302 SGCC |
| Low-Carbon Structural Plate | GB/T 700 Q235B | ASTM A36 / A570 | EN 10025 S235JR | JIS G3101 SS400 |
| Non-Oriented Silicon Steel | GB/T 2521 50W470 | ASTM A677 47F190 | EN 10106 M470-50A | JIS C2552 50A470 |
Through automated inventory management and rigorous inspection parameters, Ningbo Puppet Steel provides complete material certifications (MTCs EN 10204 3.1) with each shipment. This documentation verifies mechanical values, including yield point elongation, tensile strength, yield ratio, and zinc coating mass.
Customized carbon, galvanized, and alloy steel properties tailored to key industrial applications.
Providing high-yield strength structural steels (such as DP600 dual-phase series) and high-corrosion-resistant hot-dipped zinc plates. These grades deliver durability, energy absorption during collisions, and lightweight design.
Supplying Cold Rolled Grain Oriented (CRGO) and non-oriented electrical steel sheets. Engineered with low core loss properties and high polarization permeability, these materials help optimize conversion efficiency.
Supplying heavy, anti-wear hot-rolled carbon plates like ASTM A131/DH36. Designed with low hydrogen embrittlement risks, these plates are built to withstand high wave impact and deep-ocean corrosive environments.
Tracking technology trends to support low-carbon manufacturing and high-precision steel requirements.
Reducing carbon footprint in core slab processing by transitioning coal-based reduction processes to hydrogen injection, achieving low emission metrics per ton of cold-rolled steel output.
Developing micro-rolling technology to supply ultra-thin grain-oriented electrical sheets, supporting core efficiency improvements in electric vehicles (EVs) and high-frequency power grids.
Deploying deep-learning visual analytics on continuous galvanizing lines to identify and log surface micro-defects down to the micron level in real time.
International shipping of flat-rolled steel requires navigate specific tariff codes and compliance structures. We support buyers through clear classification, origin verification, and compliant transactional documentation.
Ocean transport can expose steel to saline atmosphere rust risks. Our export standard packaging applies VCI (Volatile Corrosion Inhibitor) paper, high-density polyethylene wrapping, steel strapping, and metal protection rings on heavy wooden runners.
We coordinate with international testing labs like SGS, Bureau Veritas, and TÜV. Upon request, independent inspectors can verify chemical profiles, weldability benchmarks, coating weights, and dimensional tolerances before export release.
We prioritize energy-saving and carbon-reduction initiatives throughout our processing operations. Ningbo Puppet Steel supports green building certifications by offering scrap-metal recycling tracing and environmentally conscious chemical passivation coatings.
Inside our high-capacity cold-reduction mills, precision profiling lines, and automated warehouses.
Addressing key technical details, quality processes, and supply logistics for industrial procurement teams.
We achieve standard cold-rolling dimensional control within ±0.02mm using automated gauge-adjustment systems (AGC). For special project requirements, close-tolerance specifications down to ±0.01mm can be negotiated.
We support hot-dipped zinc weights ranging from Z60 (60g/m²) up to Z275 (275g/m²) or high-protection Z600 coatings. Coating weights are verified using the gravimetric method or non-destructive electromagnetic sensors, with values recorded on the Mill Test Certificate (MTC).
We produce non-oriented and grain-oriented electrical sheets (CRGO) in compliance with EN 10106, ASTM A677, and JIS C2552 standards, verifying core losses (e.g., 50W470, M470-50A) at 1.5 Tesla and 50Hz/60Hz frequencies.
Mirror products (8K finish) undergo mechanical polishing stages and dynamic surface scanners to detect pinholes and micro-scratches. They are finished with dual-layer PE protective films to prevent abrasion during processing and handling.
Yes, we maintain inventory and process high-durability wear plates including NM400, NM450, NM500, NM550, and Q690D. These grades provide abrasion resistance and structural integrity for mining, excavation, and heavy handling machinery.
We apply rust-preventive oils, Volatile Corrosion Inhibitor (VCI) papers, heavy-duty metallic edge protectors, and steel banding configurations. This setup helps prevent moisture ingress during transoceanic shipping.
Yes. Every shipped batch is traceable back to its original raw slab heat number, with mechanical testing and chemical composition breakdowns documented in the associated Mill Test Certificate (MTC).
Standard material dimensions are available for rapid dispatch. Custom profiling, bending, or chemical adjustments generally require 15 to 30 days, depending on material volume, specification complexity, and mill scheduling.
Additional carbon, structural, weathering, and specialized alloy products for high-demand industrial projects.
Puppet Steel
