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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
OEM Steel
OEM Steel
OEM Steel (Industrial Steel for Equipment)｜Global Sourcing for Engineering & Procurement
1. Product Positioning and Scope
1) Positioning
“Industrial steel for equipment” cover plates, pipes, bars and forgings used in chemicals, refining, oil & gas, power, mining, water treatment, pulp & paper, food and pharma, offshore, and general equipment—serving pressure vessels, heat-transfer equipment, process piping, structural frames and mechanical components.
2) Industries & Typical Uses
Chemicals & refining: vessel shells, exchanger tubes and tube sheets, columns and reactor shells, process lines.
Power & thermal: boiler tubes, superheater/reheater coils, steam pipelines, headers.
Oil & gas/offshore: gathering and transmission lines, seawater service, sour-service parts.
Water & municipal: clean/sea water systems, wastewater and chemical cleaning systems.
Mining & equipment: wear plate, shafts and gears, thick plate structures.
Food, pharma & ultrapure media: sanitary stainless plates and tubes with polished/electropolished IDs.
General structures: skids, frames, bases and platforms.
3) Supply Forms
Hot-rolled coil and plate (incl. PVQ), seamless and welded tubes/pipes, stainless and alloy bars, open-die/rolled rings and forged components.
2. Standards Matrix (Buyer’s View)
1) General & Dimensional Series
General requirements for tubes: ASTM A1016.
General requirements for pipes: ASTM A999.
Metric stainless tube dimensions/tolerances: ISO 1127.
Imperial pipe/tube series: ASME B36.10 (carbon/alloy), ASME B36.19 (stainless).
Inspection documents: EN 10204 3.1 or 3.2.
2) Plates (Pressure and High-Temperature)
ASME SA-516 (PVQ, normalized), ASME SA-387 (Cr-Mo), ASTM A240 (stainless plate/strip), EN 10028-2/-3/-5 (pressure plates), EN 10028-7 (stainless for pressure), GB/T 713 (boiler/PV plates), GB/T 3280 (stainless plate/strip).
3) Seamless & Welded Tubes/Pipes (Process & Pressure)
Carbon/alloy: ASME SA-106 (seamless high-temp), ASME SA-333 (seamless LT), ASME SA-335 (alloy seamless), GB/T 5310 (boiler), GB/T 9948 (petrochemical).
Stainless & duplex: ASME SA-312 (austenitic pipes), ASME SA-213 (boiler & HX tubes), ASTM A269 (general purpose SS tubes), ASTM A789 (duplex tubing), ASME SA-790 (duplex pipes), EN 10216-5/EN 10217-7 (SS seamless/welded).
Nickel & high alloys: ASTM B444 (Alloy 625), ASTM B423 (Alloy 825), ASTM B167 (Alloy 600/601), ASTM B622 (Ni-Cr-Mo such as C-276/C-22), with ASTM B829 general requirements.
Sanitary: ASTM A270 (specify internal surface grade on PO).
Water & tanks: AWWA C200 (water pipes; do not equate to ASME Class), API 650 (guiding plate choices for storage tanks).
4) Bars & Forgings
Bars: ASTM A29; EN 10083 (e.g., 42CrMo4). Stainless bars: ASTM A276, ASTM A479, GB/T 1220.
Forgings (pressure): ASTM A105, ASTM A350 (LF2), ASTM A694 (pipeline), ASTM A182 (stainless & alloy), EN 10222 series.
General forging requirements: ASTM A788.
5) Environment & Fitness-for-Service
NACE MR0175/ISO 15156 (wet H₂S), NACE MR0103/ISO 17945 (refining sour), PED, ASME B31.3 (process piping), ASME Section VIII/II (materials and vessels), ASME BPE (bioprocess—specify internal surface class).
3. Scenario–Material–Standard–Size Mapping (Quick Choice)
1) Pressure Vessel Shells & Columns
Materials/standards: ASME SA-516 Gr 60/70 (normalized), ASME SA-387 Gr 11/12/22 (Cr-Mo), ASTM A240 304L/316L; EN 10028-2/-3/-5/-7 equivalents.
Sizes: thickness ~8–120 mm (heavier by project), width × length ~1,500–3,800 mm × 6–12 m.
2) Boiler Heating Surfaces & Steam Lines
Materials/standards: ASME SA-213 T11/T22/T91/T92; ASME SA-335 P11/P22/P91.
Sizes: OD ~19.05–114.3 mm, WT ~2–20 mm, length 6–24 m; dimensional series per ASME B36.10.
3) Low-Temperature & Cryogenic
Materials/standards: ASME SA-333 Gr 6, ASME SA-350 LF2, ASME SA-516 70N with impact; stainless 304L/316L as needed.
Sizes: per drawing and series; specify test temperature and absorbed energy.
4) Corrosion-Resistant Chemicals/Seawater
Materials/standards: ASME SA-312 TP316L/904L; duplex ASTM A789 S32205/S32750 or ASME SA-790; nickel alloys ASTM B444 (625), B423 (825), B622 (C-276/C-22).
Verification: duplex by ASTM A923 (A/B/C) and ASTM G48; add pitting/crevice checks as required.
Sizes: ISO 1127 for metric; ASME B36.19 for imperial series.
5) Food, Pharma & Ultrapure Media
Materials/standards: ASTM A270 316L (sanitary tube), ASTM A240 316L (BA/2B); ASME BPE (state SF class, δ-ferrite, extractables).
Sizes: tube OD ~12.7–101.6 mm, WT 1.0–3.0 mm; plate 1.5–10 mm.
6) Mining & General Equipment (Structural/Mechanical)
Materials/standards: EN 10083 (42CrMo4, 34CrNiMo6) and ASTM A29 (4140/4340) bars; wear plate ASTM A514/AR grades; structural plate EN 10025 (S355) or ASTM A572 Gr 50.
Sizes: bar dia. ~20–500 mm; wear plate 6–80 mm.
7) Waterworks & Tanks
Materials/standards: AWWA C200 pipes with coatings per AWWA C210/C213; storage tanks per API 650 plate selections (A36/A283/A516 as design dictates).
Sizes: large-diameter welded pipe per project; plate width/thickness by tank design.
4. Size Range & Tolerances (Unified)
Plates: ASTM A6/A6M or EN 10029 (dimensions and shape); stainless per ASTM A480/EN 10028-7.
Tubes/pipes: ISO 1127 D/T classes preferred for stainless; ASME B36.10/B36.19 for series; ASTM A1016 or ASTM A999 for general requirements/tests.
Bars/forgings: to drawing and ASTM A484 (stainless general) or EN 10278/EN 10222; state straightness, ovality, end prep.
Typical planning ranges: plate 4–200 mm; tube OD 6–1,219 mm (welded can be larger); bar dia. 10–500 mm; length commonly 6–12 m.
5. Manufacturing & Critical Controls
Steelmaking: EAF/BOF → LF → AOD/VOD (for stainless/high alloys) → continuous casting.
Forming & HT: plate hot rolling and N/QT; tubes by hot piercing/rolling or extrusion plus solution-anneal or N/QT; welded pipe UOE/LSAW/HFW plus heat treatment; forgings by open-die/ring-rolling plus HT.
Corrosion & phase balance: austenitic sensitization check per ASTM A262 as needed; duplex per ASTM A923 and G48; sour service per NACE MR0175/ISO 15156, including hardness windows.
Cleanliness & surface: stainless pickling/passivation; sanitary BA/EP; PMI on critical items.
6. Quality & Documentation
Chemistry: OES/ICP; control C, S, P, Mo, N, Ni, Cr to spec windows.
Mechanical & impact: tensile, yield, elongation; impact temperature and energy on PO.
NDE: plates UT per EN 10160; tubes UT/ET/RT/MT/PT per EN ISO 10893 or ASTM E213/E309; weld NDE per project code.
Pressure/tightness: tube hydro or air/gas as per product spec; helium leak for special services.
Documents: EN 10204 3.1/3.2, heat-treat charts, NDE reports, PMI, NACE declarations (if applicable), TPI points.
7. Supply & Packaging
Plates: oil or VCI wrap; edge protection.
Tubes: end caps + dry film or light oil; bundles or crates; ID/OD protection.
Bars/forgings: protected ends, clear tagging, pallets or steel skids.
Marking: heat no., grade, standard edition, size/tolerance class, HT condition, item no., weight.
8. Ordering Checklist (Copy-Ready)
Standard & edition; service medium/pressure/temperature and governing code (e.g., ASME B31.3); grade designation (Chinese name plus English acronym); size & tolerance system (ISO 1127 D/T or ASME B36 series); heat-treat condition; NDE coverage and methods; impact and hardness targets; ID surface class (BA/EP) and cleanliness; documentation and TPI; NACE or PED clauses.
9. One-Line Selection Hints
Steam & pressure: SA-516/SA-387 plates, SA-213/SA-335 tubes.
General corrosion: A240 316L plates, SA-312 316L pipes.
Seawater/chlorides: A789/SA-790 2205/2507.
Severe corrosion or high-temp carburization: B444 (625), B423 (825), B622 (C-276).
Sanitary/ultrapure: A270 316L + ASME BPE.
Low temperature: SA-333 + SA-350 LF2 or 304L/316L.
10. Risks & Mitigations
Do not equate AWWA Classes with ASME Classes; avoid mixing ISO 1127 and ASME dimensional series without PO clarity; ensure NACE fitness and hardness control for sour; run ASTM A923/G48 for duplex and ASTM A262 for austenitic as applicable; specify internal finish/cleanliness for sanitary; state impact test temperature/energy; do not confuse A999 (pipes) vs A1016 (tubes).
11. Representative PO Lines
“Plate, ASME SA-516 Gr 70, 40 mm × 2,500 mm × 10,000 mm, normalized, EN 10204 3.1, UT per EN 10160 S1/E1.”
“Boiler tube, ASME SA-213 T22, OD 50.8 mm × WT 5.0 mm × L 12 m, hydro tested, general per A1016, EN 10204 3.1.”
“Process pipe, ASME SA-312 TP316L, ISO 1127 D3/T3, OD 114.3 mm × WT 3.6 mm × L 6 m, pickled & passivated, 100% PMI, EN 10204 3.1.”
“Seawater line, ASTM A789 S32205, OD 168.3 mm × WT 10.97 mm × L 6 m, ASTM A923 A/B/C & G48-A passed, per A1016, EN 10204 3.1.”
“Sanitary tube, ASTM A270 316L, OD 50.8 mm × WT 1.65 mm × L 6 m, internal SF1 (BA/EP), oil-free & clean-pack, EN 10204 3.1.”
12. Representative Global Producers (Examples, A–Z)
ArcelorMittal, Aperam, Alleima (ex-Sandvik), Baosteel, Benteler, JFE Steel, Jiuli Hi-Tech, Nippon Steel, Outokumpu, POSCO, Salzgitter Mannesmann, Tenaris, Thyssenkrupp, Tubacex, Vallourec.
(Actual dimensional capability, metallurgy route and certifications vary by mill; rely on mill datasheets and contract terms.)
OEM Steel (Industrial Steel for Equipment) ｜Technical Specifications
(Plates / Pipes & Tubes / Bars & Forgings / Sections / Clad & Lined Materials)
A. Scope and Objectives
Scope. Metallic materials used in industrial equipment across power & energy (thermal/nuclear/renewables), oil & gas and chemical process industries, metallurgy & mining, transport & offshore, construction machinery, hydrogen & CCUS, high-purity/biopharma/semiconductor. Product families include plates, pipes & tubes, bars & forgings, structural sections, and clad/lined products.
Objective. Achieve balanced strength–toughness–corrosion resistance–wear resistance–weldability–manufacturability under severe service envelopes (high-temperature/pressure, sour/oxidizing/corrosive media, cyclic/fatigue and impact loading, low-temperature impact, erosion/abrasion).
B. Code & Standards Hierarchy (top-down)
1. Design / Use Codes
• ASME BPVC Section I/II/VIII (Boilers & Pressure Vessels; materials in Section II)
• EN 13445 (Unfired pressure vessels)
• ASME B31.1 (Power Piping) / ASME B31.3 (Process Piping)
• API 5L / ISO 3183 (Line pipe); external coatings to ISO 21809
• ISO 15156 (NACE MR0175) for H₂S-containing sour service; API RP 941 (Nelson curves/HTHA)
• ASME BPE for hygienic stainless systems (biopharma/HP) and, for polymer UHP systems, SEMI F57 (reference only)
2. Product Standards (examples by family)
• Pressure-vessel plates: ASME/ASTM SA516 (C-Mn), SA387 (Cr-Mo), GB/T 713 (Q345R etc.), EN 10028-2/-3/-5 (P355GH, 16Mo3, 10CrMo9-10, X10CrMoVNb9-1)
• High-temp alloy pipes/boiler tubes: ASTM A335 (P11/P22/P91/P92), ASTM A213 (T11/T22/T91/T92)
• Stainless/Duplex pipes & tubes: ASTM A312 (Pipe) / A213 (Tube) / A789-A790 (Duplex) / EN 10216-5 (TC1/TC2)
• Low-temp steel: ASTM A333 (LTCS); low-temperature plates GB 3531
• Ni-alloy pipes & tubes: ASTM B622 (C-276/C-22/625), B444 (625), B423 (825), B407 (800H/HT), B163/B167 (200/400/600)
• Centrifugally cast radiant coils: ASTM A608 / A297 (HK/HP-Mod series)
• Structural/high-strength: EN 10025-2/-6 (S355/S460/S690QL), GB/T 1591 (Q355/Q460/Q690), ASTM A514
• Wear plates: GB/T 24186 (NM400/450/500/600), proprietary Hardox® 400/450/500
• Clad plates/pipes: ASTM A263/A264/A265 (stainless/Ni clad plates), API 5LD (metallic clad/liner)
3. General Requirements (do not mix up)
• Plates: ASTM A20/A20M (general requirements)
• Pipes (stainless & alloy): ASTM A999; Pipes (carbon & alloy): ASTM A530
• Tubes (stainless & alloy): ASTM A1016
C. Material Systems & Representative Grades (by family)
1. Plates
• C-Mn / medium-low temp vessels: SA516 Gr.60/65/70, GB/T 713 Q345R, EN P355GH
• C-Mo / high-temp vessels: SA387 Gr.11/12/22/91, EN 16Mo3 / 10CrMo9-10 / X10CrMoVNb9-1
• Low-temperature plates: GB 3531 (16MnDR/09MnNiDR etc.)
• High-strength structural: S690QL/QL1 (EN 10025-6) / ASTM A514 / Q690
• Wear-resistant: NM400/450/500/600 (GB/T 24186) / Hardox® 400/450/500
• Weathering/corrosion-resistant: GB/T 4171 (Q355NH etc.) / EN 10025-5 (S355J2W etc.); stainless/duplex/Ni clad plates by explosion/hot-roll per A263/264/265
2. Pipes & Tubes
• High-temp pressure service: ASTM A335 P11/P22/P91/P92, ASTM A213 T11/T22/T91/T92
• General pressure piping (ambient to medium temperature): ASTM A106 Gr.B/C, A335 P22, China pressure/chemical/petrochemical pipes GB/T 8163/9948/6479
• Stainless/Duplex: A312 TP304/316L/321/347, A789/A790 S32205 (2205)/S32750 (2507); EN 10216-5 (TC1/TC2)
• Low-temperature: A333 Gr.6 (−46 °C class)
• Nickel alloys: B622 (C-276/C-22/625), B444 (625), B423 (825), B407 (800H/HT)
• Radiant coils (ethylene/pyrolysis): A608/A297 (HK/HP-Mod)
3. Bars/Forgings/Sections
• Shafts/gears/connectors: 42CrMo/42CrMo4, 34CrNiMo6, 40Cr, 20CrMnTi (carburized)
• Flanges/forgings: A105 (CS) / A350 LF2 (LTCS) / A182 (F11/F22/F304/F316/F51/F53/F55)
• Structural sections/HSS: Q355/S355, S460, Q690/S690
D. Dimensions, Systems & Tolerances (engineering windows)
1. Plates
Thickness 6–150 mm (for >100 mm specify special UT and toughness validations); width ≤4.2 m; length ≤18 m (mill capability dependent). UT per ASTM A578 Level B/C or EN 10160 S2/E2. Through-thickness properties per GB/T 5313 or EN 10164 (Z15/Z25/Z35) for T-joints/thick nodes.
2. Pipes & Tubes
Dimensional systems: ASME B36.10M (CS/AS/alloy) and ASME B36.19M (SS), or ISO 1127 (OD×WT with D/T tolerance classes). Typical range NPS 1/2–24; wall schedules Sch 10S/40S/80S or calculated thickness.
3. Bars/Forgings
To drawing; UT to ASTM A388/ASME SA-388 with stated levels and coverage; forging ratio specified in the technical agreement.
4. Flanges & Ratings
ASME B16.5 Class 150–2500 or EN 1092-1 (PN). If mixing systems, specify conversion and interfaces.
E. Manufacturing Route (metallurgy → forming → heat treatment → surface)
1. Steelmaking
BOF/EAF + LF; AOD/VOD for stainless/duplex; VIM + ESR/VAR optional for nuclear/Ni-alloy/critical clean-steel applications.
2. Plates
Continuous casting → hot rolling → TMCP/normalizing/quenched-and-tempered → levelling → UT; heavy plates with controlled rolling/cooling for toughness.
3. Pipes & Tubes
• Seamless: piercing → hot-roll/extrude → cold draw/cold roll finishing → heat treatment (solution/normalize/tempering) → straightening
• Welded: ERW/HFW (small/medium OD), SAW/LSAW (large OD), EFW (thick-wall stainless); PWHT as per product standard
• Centrifugal cast tubes: spin casting → heat treatment → machining
4. Surface / Lining
Pickling & passivation per ASTM A380/A967 (stainless/duplex); coatings epoxy/FBE/3LPE/3LPP; internal linings PTFE/glass-flake/rubber as per medium.
F. Key Performance Requirements
• Mechanical: YS/UTS/elongation; CVN at specified temperature; high-temp creep/rupture for Cr-Mo/CSEF steel
• Corrosion: ASTM A262 (intergranular for austenitic), ASTM A923 (harmful phases/phase balance for duplex), ASTM G48 (pitting/crevice for Mo-rich and duplex), SSC/HIC in sour service
• Metallography/Hardness: CSEF weld HAZ control and hardness windows; hardness limits for ISO 15156/NACE services
• Tightness: hydrostatic/air; He-leak for high-purity/vacuum where specified
• Surface: proper pickling/passivation; coating DFT, adhesion, and holiday detection
G. Service → Material & Standard Quick Mapping (text only)
1. Ambient to ~400 °C pressure vessels
→ SA516 Gr.70 / Q345R / EN P355GH. For LT requirements, state CVN temperature; add A20 addenda; UT/Z per node design.
2. 400–600 °C vessels/heat exchangers
→ SA387 Gr.11/22 or EN 16Mo3 / 10CrMo9-10; check creep life and PWHT; control weld heat input.
3. 540–650 °C boiler hot end / main steam
→ A213 T91/T92, A335 P91/P92. CSEF steel require strict normalize + temper regimes, full WPS/PQR, and weld hardness/impact re-tests.
4. Low temperature −46…−196 °C (LPG/LNG/cryogenic)
→ A333 Gr.6 (pipe) + A350 LF2 (forgings) or austenitic A312 304L/316L; specify CVN and, where applicable, He-leak/pressure tests.
5. Chlorides/seawater/wet metallurgy (ambient–medium T)
→ Duplex 2205/2507 (A789/A790) or 6Mo/904L; design by PREN ≥ 35/40; assess Cl-SCC risks.
6. Sour service (H₂S/CO₂)
→ API 5L PSL2 for line pipe with ISO 15156 hardness and SSC/HIC controls (NACE TM0177/TM0284); severe segments use Alloy 825/625/C-276 per B423/B444/B622.
7. Ethylene furnace radiant coils (800–1100 °C)
→ ASTM A608/A297 (HK/HP-Mod) centrifugal cast tubes only; do not replace with A213/A335.
8. Nuclear (project-specific control)
→ RPV: SA508 Gr.3/Gr.4N; SG tubes: Alloy 690TT; primary piping A312/A376; all per ASME III / RCC-M with nuclear QA/QC.
9. Hygienic/UHP (biopharma/semiconductor)
→ ASTM A270 S2 / ASME BPE (EP surfaces and hygienic geometry); polymer UHP systems refer to SEMI F57 (not metallic).
H. QA/QC and ITP (Inspection & Test Plan)
• General: Plates per ASTM A20/A20M; Pipes per ASTM A999/A530, Tubes per ASTM A1016. Docs per EN 10204 3.1/3.2.
• Chem/Mech: tensile, CVN at stated temperature, hardness; creep/rupture where applicable.
• NDE: Plate UT per ASTM A578 or EN 10160; Pipe hydro or full-length eddy/UT (A999/A1016); RT/TOFD as required; Forgings UT (A388/SA-388).
• Corrosion tests: A262, A923, G48; SSC/HIC per TM0177/TM0284 for sour.
• PMI: per API RP 578 on critical alloy items.
• Heat treatment & welding: CSEF steel—furnace charts, post-weld hardness & metallography. WPS/PQR to code with witness points.
• Coatings/Linings: DFT, adhesion, holiday testing, bond/peel as applicable; stainless pickling/passivation records to A380/A967.
I. Delivery, Marking & Packaging
• Marking: grade, standard/version, heat/lot, heat-treat condition, dimensions, inspection marks; pipe end color code and end caps.
• Packaging: moisture protection, rust preventive oil, end caps; wrap/wooden cases/steel banding; sea-fastening for long haul; protective and clean packaging for lined/HP parts.
• Records: MTC 3.1/3.2, NDE reports, heat-treat charts, corrosion test records, PMI, coating QC, He-leak (if ordered).
J. Ordering Checklist (copy-ready for RFQ/MR)
1. Service & Code: medium, temperature/pressure, cycles, corrosion window; applicable ASME/EN/API/ISO editions; ISO 15156 for sour.
2. Product & Grade: plate/pipe/tube/bar/forging/section; e.g., SA516-70 / SA387-22 / A335 P91 / A312 316L / A790 S32205 / B622 N10276.
3. Dimensional system: Plates (t × width × length); Pipes B36.10/B36.19 (NPS × Sch) or ISO 1127 (OD × WT with D/T class); Flange rating ASME Class or EN PN.
4. Adders:
• Plates—UT level, Z-quality (Z15/Z25/Z35), CVN temperature/energy, PWHT simulation & re-test if needed
• Pipes—heat-treat condition, NDE set (hydro/UT/ET/RT), LT/sour adders, IGC/A923/G48 for stainless/duplex
• Duplex/Ni—PMI 100% and corrosion test coverage
• CSEF—normalize + temper window, post-weld hardness & metallography acceptance
5. Documentation & TPI: EN 10204 3.1/3.2, ITP/TPI list, traceability matrix.
6. Surface/Lining: pickling/passivation, coating system & DFT, lining type and acceptance plan.
K. Construction Quality & Risk Controls (do-not-do list)
• Using Q345B for pressure vessels/piping → use Q345R (plates) or applicable pressure/chemical pipe standards (GB/T 8163/9948/6479)
• Substituting seamless/welded tubes for radiant coils → coils must be A608/A297 centrifugal cast
• CSEF (P91/P92) mishandled HT/WPS → strict normalize + temper and weld windows; verify weld hardness/impact/metallography
• Sour service without hardness/SSC/HIC control → ISO 15156 and TM0177/TM0284 mandatory
• No A262/A923/G48 for SS/duplex → hidden failure risk
• 304/316 in hot/high-Cl⁻ → Cl-SCC risk; use 2205/2507/6Mo/Ni alloys
• Mixing dimensional systems → fix B36.10/36.19 vs ISO 1127; convert ASME Class vs EN PN explicitly
• No PMI/3.2 on critical alloy/high-consequence items → require PMI 100% and 3.2 where warranted
L. Sample Specification Lines (paste-ready)
1. Ambient/medium-temp vessel plate
“Plate, ASME SA516 Gr.70, t = 32 mm × 2500 mm × 12000 mm, UT per ASTM A578 Level B, CVN −20 °C ≥ 34 J, Z-quality Z25 per EN 10164, MTC EN 10204 3.2, additional requirements per ASTM A20.”
2. High-temperature vessel plate
“Plate, ASME SA387 Gr.22 Cl.2, t = 28 mm × 3000 mm × 12000 mm, UT A578 Level C, PWHT simulation re-test required, MTC 3.2.”
3. Main steam pipe (CSEF)
“Pipe, ASTM A335 P91, NPS 10 Sch 80, normalized & tempered, NDE per A999 (hydro or 100% UT), weld hardness & microstructure as specified, WPS/PQR qualified, MTC 3.1.”
4. Process stainless pipe
“Pipe, ASTM A312 TP316L, NPS 6 Sch 40S, solution annealed, pickled & passivated per ASTM A380/A967, PMI 100%, hydro per A999, MTC 3.1.”
5. Duplex for seawater service
“Pipe, ASTM A790 S32205 (2205), NPS 8 Sch 40S, solution annealed & water quenched, ASTM A923 (A/B/C) pass, ASTM G48 Method A @ 25 °C pass (acceptance as specified), PMI 100%, MTC 3.1.”
6. Low-temperature (LPG/LNG)
“Pipe, ASTM A333 Gr.6, NPS 12 Sch 80, impact −46 °C qualified, matching flanges ASTM A350 LF2 Class 300, MTC 3.1 with impact reports.”
7. Nickel alloy for severe corrosion
“Pipe, ASTM B622 N10276 (C-276), OD 60.3 mm × WT 5.54 mm × L 6 m, per B829 general requirements, hydro/ET as specified, PMI 100%, MTC 3.1.”
8. Radiant coil (pyrolysis)
“Centrifugally cast tube, ASTM A608 (HK/HP-Mod), OD/WT per drawing, heat treatment per spec, dimensional & NDE per A608, MTC 3.1.”
M. Representative Global Supplier Landscape (non-exhaustive; for pre-qualification only)
• Plates (vessel/high-strength/wear): ArcelorMittal, Baowu, HBIS-Wuyang, Dillinger, JFE, Nippon Steel, POSCO, SSAB, voestalpine Grobblech, Ansteel, Shougang, Valin-Xiangtan
• Pressure/boiler/alloy pipes: Tenaris, Vallourec, Nippon Steel, JFE, Sumitomo, TMK, TPCO
• Stainless/duplex/Ni pipes: Alleima (ex-Sandvik), Tubacex, Salzgitter Mannesmann Stainless, BUTTING, Kobelco, Wenzhou stainless cluster (subject to audit)
• Clad plates/pipes: BUTTING, NobelClad, selected EU/US/CN explosion-bonding mills (audit traceability/QA)
• Centrifugal cast tubes: International radiant-tube specialists (HK/HP-Mod); validate alloy pedigree and furnace records.
Final vendor selection shall follow project-specific qualification, client whitelist, type testing, and full traceability.
Annex (informative) — Critical Corrections & Boundary Notes
• General requirements: Use A999 (pipes, stainless/alloy), A530 (pipes, CS/alloy), A1016 (tubes, stainless/alloy); do not mix.
• Low-temperature: Use GB 3531 for LT plates and A333 for LT pipes; do not substitute with structural grades.
• Radiant coils: Must be A608/A297 centrifugal cast; A213/A335 are not acceptable substitutes.
• Nuclear: SA508 for RPV, Alloy 690TT for SG tubes, A312/A376 for primary piping; execute under ASME III/RCC-M with nuclear QA.
• Sour vs refinery: This spec uses ISO 15156/MR0175 for sour; refinery MR0103/ISO 17945 applies in refinery units (outside the present generic scope).
• Weathering steel in marine: For C5-M/CX exposure, do not rely on patina alone; adopt heavy-duty coating/thermal-spray systems per ISO 12944/2063.
Abbreviations used. UT (Ultrasonic Testing), RT (Radiography), PT (Penetrant), MT (Magnetic Particle), ET (Eddy Current), TOFD (Time-of-Flight Diffraction), CVN (Charpy V-Notch), CTOD (Crack Tip Opening Displacement), PMI (Positive Material Identification), CSEF (Creep-Strength-Enhanced Ferritic), PWHT (Post-Weld Heat Treatment), DFT (Dry Film Thickness), ITP (Inspection & Test Plan), TPI (Third-Party Inspection), QA/QC (Quality Assurance/Quality Control), EP (Electropolished), PREN (Pitting Resistance Equivalent Number).
If you’d like, I can tailor this spec to a specific project (e.g., hydrotreater, ethylene furnace, LNG, urea, nuclear primary loop, ASME BPE hygienic system), producing a service-specific selection matrix, ITP, WPS/PQR windows, corrosion test schedule, and a procurement spec pack.cross selection, procurement and acceptance.
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