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Industries OverviewThe company's products are primarily used in industrial equipment sectors such as nuclear power, petroleum, petrochemicals, chemical engineering, power generation, automotive manufacturing, shipbuilding, fertilizer production, pharmaceuticals, papermaking, sugar refining, and machinery manufacturing. -
Products & SolutionsOur Products: Ferrous metal ore raw materials (nickel ore, ferronickel, ferrochrome, ferromanganese, ferrosilicon, etc.), seamless pipes, welded pipes, medium-thick plates, plate coils, bars, wire rods, wire coils, pipe fittings, flanges, castings, etc. -
CommunityThe company has established an excellent reputation within the industry through its strong credibility, comprehensive services, and ample resources. -
Process VisualizationThe company's products are primarily used in industrial equipment sectors such as nuclear power, petroleum, petrochemicals, chemical engineering, power generation, automotive, shipbuilding, fertilizer production, pharmaceuticals, papermaking, sugar refining, and machinery manufacturing. -
About UsTsisco Industrial Ltd. was established in 2010. Originating from the Tsingshan ecosystem’s Shanghai platform, the company now operates independently and focuses on global supply-chain integration, distribution, and import/export of steel and alloy materials. We achieved ISO 9001 certification from TÜV Rheinland in 2012, and ISO 9001, ISO 14001 and ISO 45001 certifications from LRQA in 2022. These accreditations underpin continuous improvement and stable performance in quality, environment, and occupational health & safety.
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Products & Solutions
Stainless Hot Rolled Coils
Stainless Hot Rolled Coils
Stainless Steel Coils & Plates｜Global Sourcing for Engineering & Procurement
1. Product Positioning & Scope
1. Definition & Forms: Flat products in coils and plates, including cold-rolled coils (CR), hot-rolled pickled coils (HRAP), and cut-to-length sheets and heavy plates. Typical finishes include 2B, BA (bright annealed), No.1 (hot-rolled pickled), No.4 (brushed), HL (hairline), and mirror.
2. Industries & Scenarios: Architecture and elevator/home appliances (appearance), food & pharma equipment (clean and polishable), seawater and high-chloride exposure (offshore/desalination), chemicals & pulp & paper (corrosive media), energy & pressure equipment (code compliance), automotive & transportation (heat/corrosion resistance), semiconductor & ultrapure systems (low roughness and cleanliness).
3. Boundary to Other Products: This page focuses on flat products (coil, sheet, plate, strip). For tubes, long products, or fittings/flanges, refer to their dedicated pages and standards.
2. Standards Matrix (Global & China)
1. ASTM/ASME:
a. ASTM A240/ASME SA-240: Stainless plate, sheet, and strip for general and pressure use.
b. ASTM A480: General requirements (dimensions, tolerances, flatness, finishes).
c. ASTM A666: Austenitic stainless, annealed or cold-worked, sheet/strip/plate.
d. ASTM A693: Precipitation-hardening stainless sheet/strip/plate.
e. Corrosion & cleanliness: ASTM A262 (IGC of austenitic), ASTM A923 (duplex phases/intermetallics), ASTM G48 (pitting/crevice), ASTM A967/ASTM A380 (passivation/cleaning).
2. EN/ISO:
a. EN 10088-2 (general): Technical delivery conditions for stainless flat products.
b. EN 10028-7 (pressure): Stainless flat products for pressure purposes.
c. Dimensions & tolerances: EN 10051 (hot-rolled strip & sheet), EN 10029 (hot-rolled plates ≥3 mm), EN ISO 9445-1/-2 (cold-rolled strip and cut lengths).
d. Grades & chemistry: ISO 15510 (chemistry cross-reference), ISO 16143-2 (general-purpose stainless sheet/strip).
e. Certification: EN 10204 (3.1/3.2).
3. China & Japan:
a. GB/T 3280 (cold-rolled), GB/T 4237 (hot-rolled), GB/T 24511 (pressure-purpose stainless), GB/T 20878 (classification).
b. JIS G4304 (hot-rolled plate/sheet), JIS G4305 (cold-rolled sheet/strip).
4. Note: The order must fix the governing standard and revision and unify the source for dimensional and flatness tolerances (e.g., ASTM A480 or EN 10051/EN 10029/EN ISO 9445).
3. Scenario–Material–Standard–Size Mapping (Quick Selection)
1. Food & pharma (clean/polishable):
Material: 316L, 304L; Finish 2B/BA; electropolishing if needed.
Standards: ASTM A240 + A480 or EN 10088-2; for pressure use add EN 10028-7 or ASME SA-240.
Size guide: 0.5–6.0 mm thickness, common widths 1000/1219/1500 mm.
2. Seawater & high chlorides:
Material: Duplex 2205, super-duplex 2507, or 904L/254SMo.
Standards: ASTM A240 + A480 or EN 10088-2; specify ASTM A923 and ASTM G48 where critical.
Size guide: 2.0–20 mm thickness; 1219/1500/2000 mm width.
3. Chemicals & pulp & paper (corrosive media):
Material: 316L, 317L, 904L, 254SMo, 2205.
Standards: ASTM A240 + A480 or EN 10088-2; for pressure use adopt EN 10028-7 or SA-240.
Size guide: 1.5–16 mm thickness; cut-to-size per drawings.
4. Energy & pressure equipment (shells, heads):
Material: 304L, 316L, 321, 347H, 310S, 2205.
Standards: ASME SA-240 or EN 10028-7 with EN 10204 3.1/3.2; welding requirements as specified.
Size guide: 3–40 mm thickness (or higher), widths 1500/2000 mm.
5. Architecture/elevators & home appliances (appearance):
Material: 304/304L, 316/316L, 430, 441; Finishes No.4/HL/BA/mirror.
Standards: ASTM A240 + A480 or EN 10088-2; define roughness and protective film in the PO.
Size guide: 0.5–3.0 mm thickness, widths 1000/1219/1500 mm.
6. Automotive & transportation (heat/formability):
Material: 409L, 436L, 441, 444, 304.
Standards: ASTM A240 + A480 or JIS G4304/G4305; add OEM specs.
Size guide: 0.5–2.0 mm, coil supply.
7. High-temperature oxidation & heat-treat equipment:
Material: 309S, 310S.
Standards: ASTM A240 + A480 or EN 10088-2.
Size guide: 2.0–12 mm thickness.
4. Size Range & Tolerances (Unified)
1. Thickness: CR 0.30–6.0 mm; HRAP 3–20 mm; plates 3–100 mm (per mill capability).
2. Width: 1000/1219/1500/1524/1800/2000 mm typical; trimmed or mill edge.
3. Coil ID: 508 mm or 610 mm; coil mass by project.
4. Tolerances & flatness: Adopt ASTM A480 or EN 10051/EN 10029/EN ISO 9445 for thickness, width, length, and flatness; quantify surface roughness and appearance grades in the PO.
5. Surface & edge: No.1/2B/BA/No.4/HL/Mirror; define burr/wave limits and edge condition.
6. Protective film: Single or double PE film; state finishing direction and back-side film.
5. Manufacturing Flow & Critical Controls
1. Steelmaking & rolling: EAF + AOD/VOD refining; continuous casting or slabs; hot rolling → pickling → cold rolling → annealing & leveling; BA via protective-atmosphere continuous bright annealing.
2. Metallurgy & phase balance: Austenitic—grain/cleanliness control; duplex—ferrite ≈35–60%, avoid σ/χ intermetallics.
3. Surface & defect control: Pits, scratches, laps, coil breaks, edge cracks/waves; tension leveling and shape correction.
4. Cleaning & passivation: ASTM A967/ASTM A380; remove free iron to reduce pitting risk.
5. Traceability & marking: Heat/coil number, grade, size, finish, standard revision, certificate type.
6. Quality Verification & Documentation
1. Chemistry & mechanicals: Per ASTM A240/EN 10088-2 or EN 10028-7; δ-ferrite or magnetic permeability limits where applicable.
2. Dimensions & shape: Per ASTM A480 or EN 10051/EN 10029/EN ISO 9445, including flatness and camber.
3. Surface quality: As per agreed finish; sample roughness checks; 100% visual inspection.
4. Corrosion & phase tests (as needed): A262, A923, G48; food-contact declarations when required.
5. Documentation: EN 10204 3.1/3.2; third-party witnessing and full trace package on request.
7. Supply Forms & Packaging
1. Forms: Coils (trimmed or mill edge), cut-to-length sheets, heavy plates, slit coils.
2. Packing: Inner/outer moisture-barrier paper, woven wrap or metalized wrap, edge protectors, wooden/steel skids, anti-tip measures; eye-to-sky or eye-to-wall as specified.
3. Protection: Desiccants, humidity indicator cards, corner guards, film specification with peelability and grain direction notes.
8. Ordering Checklist (Copy-Ready)
1. Grade & revision: e.g., “EN 10088-2 1.4404 (equiv. 316L)” or “ASTM A240 Type 316L.”
2. Finish & condition: 2B/BA/No.4/HL/No.1; film type and side(s).
3. Size: Thickness × width × coil weight or cut length; coil ID 508/610 mm; edge condition.
4. Tolerances & flatness: Call out exact classes from ASTM A480 or EN 10051/EN 10029/EN ISO 9445.
5. QA & docs: EN 10204 3.1/3.2; A262/A923/G48 as applicable; surface roughness and visual grade.
6. Others: Duplex phase balance; permeability (e.g., μr≤1.05); cleanliness/residue limits; packing & logistics.
9. Material Selection Guide (Narrative)
1. Best value & general corrosion: 304L in 2B/No.1.
2. High chlorides & seawater: 2205/2507 in No.1 or HRAP.
3. Food & pharma cleanliness: 316L BA/2B; electropolish if needed.
4. Aggressive chemicals: 904L/254SMo or duplex with A923/G48 verification.
5. High-temperature oxidation: 309S/310S.
6. Appearance-critical surfaces: 304 2B/No.4/HL with protective film.
10. Procurement, Installation & O&M Risk Notes
1. Mixing ASTM and EN tolerance/flatness systems without alignment causes acceptance disputes.
2. Specifying “316” instead of “316L” increases sensitization/IGC risk after welding.
3. Duplex without A923/G48 or phase control risks early field failure.
4. Persisting with 304/316 in high-chloride service instead of 2205/2507/high-Mo grades shortens life.
5. Missing film type and grain direction leads to scratches and wrong brushing direction.
6. Poor coil storage and moisture control cause “water marks” and pitting.
7. Film peelability not aligned with downstream coating/bonding causes residue issues.
11. Representative PO Lines (Samples)
1. “Stainless coil, ASTM A240 Type 316L, finish 2B, 1.50 mm × 1219 mm, coil ID 508 mm, trimmed, tolerances per ASTM A480, flatness per ASTM A480 regular class, single-side PE film, EN 10204 3.1.”
2. “Stainless coil, EN 10088-2 1.4301 (304), finish BA, 0.80 mm × 1000 mm, coil ID 610 mm, trimmed, flatness per EN ISO 9445, double-side PE film, A262 Practice E sampling, cert 3.1.”
3. “Stainless plate, ASME SA-240 S32205 (2205), No.1, 8.0 mm × 1500 mm × 6000 mm, tolerances per EN 10029, A923 Methods A/B/C and G48-A verification, EN 10204 3.2 (third-party witnessed).”
4. “Stainless coil, ASTM A240 Type 409L, 2B, 1.20 mm × 1250 mm, ID 508 mm, mill edge, tolerances per ASTM A480, add OEM automotive spec, cert 3.1.”
5. “Stainless plate, ASTM A240 Type 310S, No.1, 10.0 mm × 2000 mm × 6000 mm, tolerances per EN 10029, cert 3.1.”
12. Representative Global Producers (Alphabetical, Examples)
Acerinox/NAS (Spain/USA), Aperam (EU/Brazil), Arvedi AST (Italy), Baosteel Stainless (China), Columbus Stainless (South Africa), Jindal Stainless (India), LISCO (China), Nippon Steel Stainless Steel (Japan), Nippon Yakin (Japan, high alloys), Outokumpu (Finland, etc.), POSCO (Korea), TISCO (China), Tsingshan/Qingtuo (China/Indonesia), YUSCO (Taiwan, China).
Stainless Steel Flat Products (Coils/Cut-to-Length / Mill Sheets & Plates) ｜Technical Specifications
1) Definition & Scope
Flat stainless in coils (HRC/CRC/BA), cut-to-length sheets (CTL), mill sheets/plates (HR/CR), and medium-heavy plates for: chemical & pressure equipment, offshore/marine, desal/FGD, building & appliances, automotive & rail, food & pharma equipment, and energy sectors.
2) Standards Matrix (incl. China GB)
General / Tolerances / Surface: ASTM A480, EN 10051 (HR), EN 10131 (CR), EN 10204 (3.1/3.2).
Material & Use: ASTM A240 (SA-240), EN 10088-2 (general), EN 10028-7 (pressure), JIS G4304/G4305, GB/T 4237/3280/24511, GB/T 20878 (grade chemistry).
UT / Surface for plates: EN 10160 (S/E) / ASTM A578; surface quality EN 10163-2.
3) Grades (UNS/EN examples)
Austenitic: 304/304L (S30400/S30403; 1.4301/1.4307), 316/316L (S31600/S31603; 1.4401/1.4404), 321 (1.4541), 347/347H, 310S (1.4845), 904L (1.4539), 6Mo/254SMo (1.4547).
Ferritic/Martensitic: 409L (1.4512), 410 (1.4006), 430 (1.4016), 436/439 (1.4510/1.4511).
Duplex/Super Duplex: 2205 (1.4462), 2507 (1.4410).
4) Finishes & Roughness (contract to define by Ra/sample)
ASTM No.1, 2D, 2B, BA, No.3/No.4, No.8; EN 1D≈No.1, 2D≈2D, 2B≈2B, 2R≈BA, 2J≈No.4, 2K≈No.8 (approximate). HL = hairline grain (directional). Typical Ra: No.1≈1.6–6.3 µm; 2B≈0.2–0.6 µm; BA≈0.05–0.2 µm; No.4/HL≈0.3–0.8 µm.
5) Size & Tolerances (typical capability; contract prevails)
HRC: t 2.0–16(20) mm, W 1000–2000 mm, ID 508/610 mm, No.1/HRAP/black.
CRC: t 0.20–6.0 mm, W 600–2000 mm, ID 508/610 mm, 2D/2B/BA/No.4/HL/No.8.
CTL from HRC: t 2–16 mm, W 1000–2000 mm, L 2000–12000 mm, No.1/HRAP.
CTL from CRC: t 0.5–6.0 mm, W 600–2000 mm, L 1000–6000 mm, 2B/BA/No.4/HL.
Mill Plate (HR): t 6–80+ mm, W 1000–2500(3000) mm, L 3–12(20) m.
Mill Sheet (CR): t 0.4–3.0 mm, W 600–1500(2000) mm, L 1–4 m.
Edges: ME/SE. Tolerances/flatness per ASTM A480 or EN 10051/10131 (restricted flatness on request).
6) Manufacturing Flow
HRC: casting → reheat → rough/finish hot-rolling → coiling → (solution/anneal) → pickling (No.1/HRAP) → tension-leveling / trimming.
CRC: pickled HRC → multi-stand cold-rolling → continuous anneal / BA → skin-pass/tension-level → recoiling / protective film.
Mill plates/sheets: HR plate mill (optionally solution/anneal + pickling + leveling) or CR mill sheet direct length.
7) KPIs & Application Mapping
Deep-draw/Decor: 304/304L (2B/BA/No.4/HL/No.8) with protective film.
Coastal/Cl⁻: 316L (upgrade to 2205/6Mo for warm chlorides).
Chemical/Pressure vessels, tube-sheets, heads: A240 316L / EN 10028-7 (+ UT where needed).
FGD/Desal/Offshore structures: 2205/2507 plates (No.1/HRAP) with weld pickling/passivation and phase balance.
High-temp ducting/heaters: 310S/321/347 (No.1), check creep/carburization.
Automotive exhaust/appliance liners: 409L/430 (2B/BA).
8) QA/QC
Chemistry & PMI (100% in critical service).
Mechanical (tensile/yield/elong.), hardness/bend as needed.
Corrosion: ASTM A262 (IGC) for austenitic; ferrite balance & ASTM G48 for duplex; salt-spray/media sim. as required.
Surface: defect control; Ra records for decorative.
UT (plates): EN 10160 S/E or ASTM A578 Level B/C.
Docs: EN 10204 3.1/3.2, heat-treatment, pickling/passivation, leveling, UT, roughness; 3rd-party on request.
9) Construction-Phase Controls
Prevent tea-staining: keep protected, dry, film-covered; post-installation cleaning/passivation (A380/A967).
Welding: control heat input/interpass; remove heat tint; for duplex verify phase balance (magnetic permeability or metallography).
Avoid chloride-bearing cleaners; do not abrade BA/mirror with hard particles.
Directional finish (HL): align grain direction across panels.
Handling: isolate from carbon steel; use soft slings; obey coil eye orientation.
10) RFQ/PO Checklist
1. Form: HRC / CRC / CTL / HR Mill Plate / CR Mill Sheet.
2. Grade + Standard: e.g., 316L / ASTM A240 (A480); add EN 10028-7 / GB/T 24511 for pressure.
3. Size: t × W (coil) / L (sheet/plate); ID 508/610 mm; target coil weight.
4. Finish/Edge: No.1 / 2B / BA / No.4 / HL / No.8; ME/SE; film/AFP.
5. Tolerance/Flatness: A480 or EN 10051/10131; restricted flatness/laser leveling if needed.
6. QA: PMI, A262 (if required), Ra target, UT class (plates), 3rd-party; 3.1/3.2.
7. Service inputs: medium (Cl⁻/chemistry/temperature), forming/welding, appearance class.
8. Packing/ID: moisture barrier/VCI, eye orientation, max package weight, barcode/QR traceability.
11) Risk Checklist
No A480/EN tolerance/surface referenced with A240;
Confusing 2B vs BA or No.4 vs HL without Ra/grain;
Using 304/316 in warm chlorides vs needed 2205/6Mo/2507;
No EN 10028-7/GB/T 24511 or UT for pressure/critical plates;
Decorative face shipped/installed without film;
Duplex welds without phase control/G48;
No EN 10160/A578 UT scope for plates;
Missing EN 10204 3.1/3.2 and process records.
12) Representative Producers & Service Centers (alphabetical)
Producers (flat stainless): Acerinox (NAS, Columbus), Aperam, Arvedi AST, Baosteel Stainless (incl. LISCO), Jindal Stainless, Nippon Steel Stainless (NSSC), Outokumpu, POSCO, TISCO, Tsingshan, YUSCO.
Service/Processing: thyssenkrupp Materials Services, Kloeckner Metals, Ryerson, Samuel, Marcegaglia Stainless, Aperam Service & Solutions, Outokumpu Service Center, Ta Chen / Yieh Corp.
(Capabilities evolve; request latest capability sheets & last-3-year references in RFQ.)
13) Sample Spec Lines (English)
• HRC for chemical structural use
“Coil, ASTM A240 316L, t=8.0 mm × W=1500 mm, No.1 (HRAP), ID 610 mm, Tolerances/flatness per A480 (restricted), EN 10204 3.1.”
• CRC decorative
“Coil, ASTM A240 304, t=1.0 mm × W=1219 mm, 2B + PE film, ID 508 mm, Target Ra ≤ 0.5 µm, 3.1.”
• BA elevator/clean room
“Coil, ASTM A240 304L, t=0.6 mm × W=1219 mm, BA + AFP film, A480 restricted flatness, 3.1.”
• HL cut-to-length (facade)
“CTL Sheet, EN 10088-2 316L, t=2.0 × 1500 × 4000 mm, HL (grain along length) + film, SE, Ra 0.4–0.6 µm, 3.1.”
• Pressure plate (UT)
“Plate, EN 10028-7 316L, t=20 × 2000 × 6000 mm, No.1/HRAP, UT per EN 10160 S2/E2 (full area), EN 10204 3.2 (TÜV witness).”
• Duplex plate (offshore/desal)
“Plate, EN 10028-7 1.4462 (2205), t=30 × 2000 × 6000 mm, No.1, G48A @25 °C 24 h Pass, µr check per contract, 3.1.”
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