No.1 finish is the most fundamental and widely used surface state for stainless steel plate. It is produced by hot rolling at temperatures above the material's recrystallization point (typically 1000–1200°C), resulting in significant thickness reduction while maintaining the correct metallurgical microstructure.
After hot rolling, the plate undergoes annealing (solution treatment) at 1010–1120°C to dissolve carbide precipitates, restore full corrosion resistance, and relieve internal stresses. The black oxide scale formed during high-temperature processing is then completely removed by shot blasting followed by acid pickling in a mixed HNO₃ / HF acid bath, which also repassivates the chromium oxide protective layer.
The result is a dull, matte, scale-free surface with a roughness of Ra 3–10 μm. While not decorative, No.1 finish provides excellent weldability, machinability, and corrosion resistance across aggressive industrial environments.
All grades available as standard plate or custom-cut sheet. Mixed-grade orders accepted to reach minimum order quantity.
Standard dimensional ranges per ASTM A480 and EN 10088-2. Custom sizes accepted — provide drawing or target dimensions for a tailored quote.
Select the right surface finish for your application. No.1 is optimised for industrial performance, not aesthetics.
No.1 hot rolled stainless steel is the material of choice across the most demanding industrial environments worldwide.
Reactor vessels, storage tanks, pipelines, and heat exchangers in sulfuric acid, caustic, and chloride environments.
316L · 2205 · 904LPressure vessels, separators, subsea structures, and offshore components requiring high strength and SCC resistance.
316L · 2205 · 2507Boiler plates, heat exchanger shells, FGD units, and nuclear reactor components requiring thermal stability.
304 · 321 · 310SHull plating, ballast tanks, deck equipment, and structural components resisting saltwater corrosion.
316L · 2205Bridge components, structural columns, base plates, and load-bearing connections in corrosive environments.
304 · 316L · 2205Machine frames, industrial equipment bases, weldments, and formed components where surface appearance is non-critical.
304 · 316LDesalination plant components, water storage tanks, and municipal treatment equipment requiring chloride resistance.
316L · 2205 · 2507Tank shells, structural frames, and non-contact surfaces where plate strength and food-grade alloy are both required.
304 · 316LMESCO ships stainless steel plates to 40+ countries. All shipments include full documentation for import clearance.
As a China-based manufacturer with 20+ years of experience, MESCO combines competitive factory pricing with internationally certified quality and reliable delivery.
No middlemen. No trading company markup. MESCO sells directly to importers, distributors, and end-users from our own manufacturing facility.
💰 Save 15–30% vs. tradersEvery batch undergoes rigorous chemical testing, dimensional inspection, and surface analysis before shipment. Mill test reports are standard.
🔬 100% heat traceabilityFrom standard plates to complex fabricated assemblies. Our in-house engineering team handles drawings, material selection, and prototyping.
🔧 DXF / DWG / PDF acceptedExperienced in international trade documentation: C/O, packing lists, SGS reports, fumigated packaging. We support FOB, CIF, and DDP terms.
🌍 40+ countries shippedCan't find the answer? Contact our technical sales team — we respond within 24 hours.
📩 Ask a QuestionTell us your grade, thickness, dimensions, and quantity. Our technical sales engineers will respond within 24 hours with pricing, availability, and a material recommendation if needed.
