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Raw materials catalog
Steel materials and primary products
Review the company overview, material families, product forms, and supply capabilities for raw-material orders.
Technical resources
Catalogs and practical tools for metal sourcing
Review our original company catalogs, move directly into the relevant material family, and prepare the technical details needed for an accurate quotation.
Material routes
Start with the material family
Open the published product range for each family, then narrow the selection by form and grade on the catalog page.
50 products
Stainless Steel
Plate, coil, pipe, tube, and bar for corrosion-resistant service.
304 · 316L · 2205 · 2507
36 products
Carbon Steel
Structural and pressure-service products for fabrication and machinery.
Q235 · A36 · S355 · A516
36 products
Alloy
Nickel and high-performance alloys for heat and aggressive media.
625 · 718 · C276 · Monel
36 products
Copper
Conductive copper and copper-alloy forms for industrial components.
C10100 · C11000 · BrassBuyer guides
Make a better material inquiry
Six practical starting points for grade selection, RFQ preparation, processing, and document review.
Stainless Steel
304L vs 316L: Which grade fits your project?
Head-to-head comparison covering corrosion resistance in chemical vs food-grade environments, cost-per-ton differences, and when the molybdenum in 316L is worth the premium. Includes Shanghai Dongransheng availability across plate, coil, pipe, and bar forms.
Nickel Alloy
Duplex stainless vs nickel alloy: making the call
Decision framework for chloride-heavy environments: when 2205 is enough, when to step up to 625 or C276, and what the price gap means for your project budget. See Shanghai Dongransheng's nickel alloy and stainless product lines.
Buying Guide
How to write an RFQ that gets you accurate quotes fast
Step-by-step guide covering the 6 fields every supplier needs: grade, product form, dimensions, quantity, delivery destination, and certificate requirements. Use our RFQ template to structure your inquiry before contacting Shanghai Dongransheng.
Carbon Steel
Q235, A36, S355: choosing the right structural steel
Practical comparison of the three most-specified carbon steel grades for fabrication, machinery, and construction. Covers strength ratings, welding behavior, and which grade to pick for your load requirements.
Processing
Processing options that save you time and cost
Overview of Shanghai Dongransheng's in-house processing capabilities: cut-to-size plate and bar, beveling, drilling, surface finishing, and custom packing. Learn how to bundle processing with your material order to reduce lead time.
Quality
Reading an MTC: what every buyer should check
How to verify a Material Test Certificate — from heat number traceability and chemical composition to mechanical properties and third-party inspection stamps. Shanghai Dongransheng ships every order with full traceability documentation.
Quality Assurance
Every shipment backed by full documentation
Material Test Certificates, heat or batch references, dimensional checks, and agreed inspection records are organized around the purchase specification. Third-party inspection can also be arranged when required.
Request sample documentationPositive material identification
Real grade checks on material in stock
Representative handheld XRF/PMI inspection photos from stainless steel, alloy steel, and copper-alloy orders. Open any image to review the instrument reading and material marking.
Stainless steel · Plate316L material verification
Stainless steel · Coil304 material verification
Stainless steel · Pipe316 material verification
Stainless steel · Tube321 material verification
Stainless steel · Coil430 material verification
Alloy steel · BarAISI 4140 verification
Alloy steel · Round bar23CrNi3Mo verification
Copper alloy · BarCW617N verification
Copper alloy · BarH68 verification
PMI supports grade screening and traceability; final acceptance criteria follow the agreed standard, MTC, and inspection plan.
Discuss inspection requirements
Company catalogs
Open or download the original PDFs
Two company documents cover the stocked material range and the processing routes available for project orders.
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Processing & manufacturing
Fabrication, casting, forging, and CNC
Explore the processing workflows and manufacturing capabilities that can be combined with a material order.
Need a project-specific data sheet or certificate sample?
Send the required grade, form, size, and standard