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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
Precision Machining Services
Precision Machining Services
Precision Machining Services ｜Global Sourcing for Engineering & Procurement
1. Product Positioning & Scope
Positioning: Build-to-print precision machining for stainless steels, carbon and alloy steels, duplex and super duplex, Ni-based superalloys, aluminum and copper alloys, and titanium. Full-process capability across turning, milling, drilling/boring, grinding, wire-EDM and sinker-EDM, deep-hole drilling, welding/assembly, and surface engineering. Typical parts include flanges and valve bodies, pump casings and shafts, gears and splines, tube-sheets, jigs and fixtures, hydraulic spools and sleeves, and precision components for medical and semiconductor equipment. Industries served include oil and gas, power and energy (nuclear, wind, PV, storage), offshore and marine, automotive and rail, aerospace, food and pharma, semiconductor and vacuum equipment, and general machinery.
2. Standards Matrix (Grouped by Use)
Drawings & GD&T: ASME Y14.5, ASME B4.1, ASME B1.1 and B1.20.1 (threads), ISO 8015, ISO 1101, ISO 14405, ISO 5459, ISO 286, ISO 2768, ISO 1302 and ISO 21920 (surface texture), ISO 13715; when following Chinese drawing systems, use GB/T 1182, GB/T 1800, GB/T 3505, etc.
Raw Materials (typical): Stainless bars/forgings per ASTM A276, ASTM A479, EN 10088-3, GB/T 1220; alloy steel bars per ASTM A29, EN 10083, EN 10250, GB/T 3077; aluminum per ASTM B221, ASTM B209, EN 573, EN 755, GB/T 3190; titanium per ASTM B348, ASTM B265, GB/T 3621, GB/T 2965; Ni-alloys per ASTM B446, ASTM B637, ASTM B564.
Welding & Heat Treatment: ASME IX, ISO 15614, ISO 9606 for welding; AMS 2750 for heat-treat process control (where applicable).
Surface & Cleanliness: ASTM A967 (passivation), ASTM B912 (electropolishing), ASTM B633 (electro-zinc), ASTM B733 (electroless nickel), ISO 7599 and MIL-PRF-8625 (anodizing), ISO 12944 (industrial coating), NORSOK M-501 (offshore coating).
Quality Systems & Compliance: AS9100 and AS9102 (aerospace), IATF 16949 and PPAP (automotive), ISO 13485 (medical), NORSOK M-650 (materials manufacturer qualification), ASME Section III or RCC-M (nuclear), as applicable.
3. Application–Material–Standard–Size Mapping (Quick Text Guide)
Petrochemical & Offshore (H₂S/Cl⁻): Duplex 2205, super duplex 2507, Alloy 625, aluminum bronze, or titanium; qualify against NACE MR0175 (ISO 15156); typical sealing faces to Ra ≤ 0.8 μm; achievable part sizes depend on fixturing and machine travel.
Pressure Equipment & Valve Bodies: CS/AS forgings (e.g., ASTM A105, A182 family); welding per ASME IX; NDT per ISO 17635 (UT/RT/MT/PT); hydro or leak tests upon request.
Automotive & Hydraulics: IATF 16949 with PPAP; H7/g6 fits; surface finish Ra 0.2–0.8 μm; cleanliness per ISO 16232 or ISO 4406.
Aerospace: Inconel 718, Ti-6Al-4V, 17-4PH; AS9100 & AS9102; AMS 2750 for heat-treat control; AMS 2430 shot peening; five-axis for blades and complex surfaces.
Food & Pharma: 316L to ASTM A270 and ASME BPE (SF1/SF4); welds to be electropolished and passivated.
Semiconductor & UHP/Vacuum: Low-S 316L (Vac/ESR); Ra ≤ 0.25 μm; cleaning per ASTM A380 and ASTM A967; oxygen clean per ASTM G93; double-bag clean packaging.
4. Capacity & Tolerances
Machine Envelope (typical): CNC turning up to Ø800–Ø1200 mm, centers 1500–3000 mm; 3/4-axis milling with travel X 800–2000 mm, Y 500–1000 mm, Z 500–800 mm; five-axis for blades/impellers/complex surfaces; grinding (ID/OD/centerless); deep-hole drilling L/D up to 80–120; wire-EDM and sinker-EDM for narrow slots and hard materials; welding TIG/MIG/MAG/laser/SAW with qualified WPS/PQR.
Precision (size/material/fixturing dependent): ±0.01–0.02 mm routinely; ±0.005 mm with fine boring/grinding/honing; positional and coaxiality 0.01–0.03 mm; surface finish Ra 0.8–3.2 μm (turn-mill), Ra 0.2–0.4 μm (grind/hone), electropolish to Ra ≤ 0.2 μm.
Defaults & Threads: ISO 2768 for general tolerances; ISO 286 for fits; specify NPT (ASME B1.20.1), BSPP (ISO 228-1), BSPT (ISO 7-1), or metric threads on drawings.
5. Manufacturing Flow & Key Controls
Flow: RFQ & DFM → process planning (fixtures, toolpaths, heat-treat, special processes) → incoming inspection & PMI → roughing → heat-treat/stress-relief → semi-finish/finish → special processes (welding, surface engineering, plating/anodize, passivation/electropolish) → cleaning/deburr/demag → in-process & final inspection (dimensions, function, pressure/leak, cleanliness) → packing & labeling → documentation (CoC/EN 10204 3.1/FAI/PPAP).
Controls: Duplex ferrite balance and interpass temperature; post-weld pickling/passivation; tool wear and heat input for Ni-alloys/hard-cut materials; coating DFT/adhesion; chloride-free cleanliness; torque-angle or tension control for fasteners.
6. Inspection & Documentation
Inspection: Chemistry & PMI; dimensional (CMM) and functional tests; NDT (UT/RT/MT/PT) per ISO 17635; hydro, air-leak, or He-leak upon request; finish/geometry/balance reports; cleanliness to industry norms. Documents: CoC, EN 10204 3.1/3.2, FAI/PPAP (as required), heat-treat & special-process reports, full material/lot traceability.
7. Supply Forms & Packing
Supply: Prototypes, pilot runs, mass production, spare parts, and on-site rework. Packing: VCI and port protection for general parts; soft single-piece wrapping and double-bag clean packing for mirror/electropolished parts; barcode and lot traceability on labels.
8. RFQ/PO Checklist (Copy-Ready)
1. Drawings & 3D model (state GD&T system/version).
2. Material & standard (e.g., ASTM A182 F316L or EN 10088-3 1.4301), alternates and equivalence criteria.
3. Tolerances & fits (ISO 286 fit bands, KPCs, ISO 2768 general tolerances).
4. Surfaces & edges (Ra with sampling length & direction, deburr/chamfer, coating/passivation standard IDs).
5. Processes & special processes (heat-treat, welding, peening, coatings; Nadcap if required).
6. Inspection (FAI/PPAP, sampling level, NDT type & ratio, function/pressure/leak).
7. Quality & compliance (AS9100/IATF/PED/NORSOK/RCC-M, as applicable).
8. Packing & labeling (VCI/vacuum, single-piece/returnable box, barcode/traceability).
9. Lead time, lot size, and split shipments.
9. Material Selection Guide (At-a-Glance)
Seawater/Chlorides: 2205/2507, aluminum bronze, or titanium; 316L SCC risk increases with temperature.
High Temperature/Carburization: 347, 310S, 800H, or quenched-and-tempered alloy steels.
High Strength + Corrosion: 17-4PH (aged) or duplex stainless.
Semiconductor/UHP: Low-S 316L (Vac/ESR) with ASTM A380/A967 cleaning/passivation and particulate/residue control.
10. Risks & Pitfalls (Procurement/Assembly/O&M)
Missing GD&T system or default tolerances on drawings; unspecified thread system/seal type; quoting only Ra without sampling length/direction; unqualified material substitution without equivalence/weldability/corrosion checks; uncontrolled tools/heat on duplex/Ni-alloys causing sigma/embrittlement; special processes without Nadcap; missing SPC/MSA; improper packing of mirror/electropolished parts.
11. Sample Line Items (Copy-Ready)
Valve Body (Petrochem/NACE):
“Part: Valve Body; Material: ASTM A182 F51 (UNS S31803/S32205); Rough → Finish per drawing; Threads per ASME B1.20.1 NPT; NDT PT+UT 100% to ISO 17635; Surface per ASTM A967 Passivation; Docs: CoC + EN 10204 3.1 + CMM report; Packing: VCI + Caps.”
Pump Shaft (Seawater):
“Shaft; Material: 17-4PH H1150; Tolerance h6; Runout ≤ 0.01 mm; Surface Ra ≤ 0.4 μm; Dynamic balance G2.5 @ 3000 rpm; NDT MT; Heat-treat cert + CMM + Balance report.”
Carrier Ring (Semiconductor):
“Carrier Ring; Material: 316L (ESR, Low-S); Finish Ra ≤ 0.25 μm; Electropolish per ASTM B912 + Passivation per ASTM A967; Cleanliness per ASTM G93; Particle/Residue limits per spec; Double-bag cleanroom pack; Full traceability.”
12. Representative Global Providers (Examples; verify scope/credentials at RFQ)
On-Demand Networks: Fictiv, Protolabs, Xometry.
Aerospace/Energy Machining Majors (partial external work): Barnes Aerospace, GKN Aerospace, Magellan Aerospace, PCC Aerostructures, SKF Aerospace, MTU Aero Engines.
Regional Clusters: Baden-Württemberg/Bavaria (DE), Lombardy/Emilia-Romagna (IT), US Midwest/West Coast, Aichi/Shizuoka (JP)
Precision Machining Services ｜Technical Specifications
1) Definition & Scope
Build-to-print precision machining of stainless, carbon/alloy steels, duplex/super duplex, Ni-based superalloys, Al/Cu alloys, and titanium: turning, milling, drilling/boring, grinding, EDM, deep-hole, welding/assembly, surface engineering. Typical parts: flanges/valves/pumps, shafts/gears/splines, HEX tube-sheets, turbine/engine components (machining segments), jigs/fixtures, hydraulic spools, medical & semiconductor components.
2) Standards Matrix (incl. GB)
Drawings & GD&T: ASME Y14.5, ASME B4.1, ASME B1.1/B1.20.1; ISO 8015/1101/14405/5459, ISO 286-1/-2, ISO 2768-1/-2, ISO 1302/21920, ISO 13715; GB/T equivalents if using CN drafting.
Materials: ASTM A276/A479, EN 10088-3, GB/T 1220 (stainless bars); ASTM A29, EN 10083/10250, GB/T 3077 (alloy steels); ASTM B221/B209, EN 573/755, GB/T 3190 (Al); ASTM B348/B265, GB/T 3621 (Ti); ASTM B446/B637/B564 (Ni alloys).
Welding/HT: ASME IX / ISO 15614 & ISO 9606, ISO 3834, AMS 2750 (pyrometry), ASTM A380/A967, ASTM B912.
Inspection/Metrology: ISO 10360 (CMM), ASME B89, MSA, PPAP/APQP, AS9102, ANSI/ASQ Z1.4.
Sector: IATF 16949, AS9100 + Nadcap, ISO 13485, PED/AD2000/ASME VIII, NORSOK M-650/M-501, ASME Sec.III / RCC-M.
3) Materials & Grades (examples)
Stainless: 303, 304/304L, 316/316L, 321, 347, 17-4PH, 15-5PH, 2205, 2507, 904L, 310S.
Carbon/Alloy: 1018/1045, 40Cr, 4140, 4340-class, Q&T steels.
Ni-based: Inconel 600/625/718, Incoloy 800H/825, Hastelloy C-22/C-276, Monel 400, Alloy 20.
Aluminium: 6061-T6/6082-T6, 7075-T651, 2024-T351, 5083.
Titanium: Gr.2, Gr.5 (Ti-6Al-4V), Gr.23 (ELI).
Copper alloys: C11000, C36000, C63000.
4) Machine Envelope & Accuracy (typical)
CNC turning: up to Ø800–Ø1200 mm, L 1500–3000 mm.
CNC milling (3/4/5-axis): X 800–2000 / Y 500–1000 / Z 500–800 mm; blades/impellers.
Grinding: roundness/cylindricity ≤0.005–0.01 mm.
Deep-hole: L/D ≤80–120, bore straightness ≤0.05 mm/m.
Accuracy: dimensional ±0.01–0.02 mm (routine); ±0.005 mm (finish grind/hone/boring). Surface: Ra 0.8–3.2 µm (turn/mill); Ra 0.2–0.4 µm (grind/hone); Ra ≤0.2 µm (electropolish).
5) Manufacturing Flow
RFQ → DFM/DFA → routing/fixtures/tools → incoming & PMI → rough → HT/stress-relief → semi/finish → special processes (weld, peen, coat, anodize, passivate/e-polish) → clean/deburr/demag → IPQC & final (CMM/functional/pressure/leak/cleanliness) → pack & ID → records (CoC/3.1/FAI/PPAP).
Key surface/coating refs: ASTM A967/B912, ASTM B633, ASTM B733, ISO 7599 / MIL-PRF-8625, MIL-DTL-16232 / ISO 9717, ISO 12944, NORSOK M-501.
6) Application Mapping
Oil & Gas/offshore (H₂S/Cl⁻/CO₂): 2205/2507/Alloy 625/Al-bronze/Ti, thread seals Ra≤0.8 µm, validate to ISO 15156/NACE.
Pressure bodies/valves: forgings A182/A105, ASME IX welding, NDT to ISO 17635, hydro/pneumatic optional.
Automotive/hydraulics: IATF + PPAP, bores H7/g6, Ra 0.2–0.8 µm, cleanliness ISO 16232/ISO 4406.
Aerospace: Inconel/Ti-6Al-4V/17-4PH, AS9100 + AS9102 + Nadcap, AMS 2750 (heat), AMS 2430 (shot peen).
Food/Pharma: 316L + ASME BPE/ASTM A270, electropolish + passivation.
Semiconductor/UHP: low-S 316L (ESR/Vac), Ra≤0.25 µm, ASTM G93 cleaning; particle/residue limits.
7) QA/QC
Metrology: ISO 10360 CMM, roughness, roundness; calibrated gages (ASME B89).
Production quality: FAI (AS9102), SPC with Cp/Cpk ≥1.33, MSA (GR&R <10%).
NDT: PT/MT/UT/RT with ISO 9712/ASNT.
Special processes: validated; Nadcap where required.
Traceability: EN 10204 3.1/3.2, PMI up to 100% for critical alloys.
Edge & burrs: per ISO 13715. Cleanliness per sector (auto/semiconductor/pharma).
8) Delivery & Packaging
VCI/oil or vacuum bag; end caps; soft corners; single-bag for mirror/e-polished.
ID: part no., rev, serial/lot, heat, orientation, QR traceability.
Docs: CoC, CMM, material/HT/coating certs, NDT, FAI/PPAP, WPS/PQR, MSDS.
9) RFQ/PO Checklist
1. Drawings/3D & declared GD&T system.
2. Material & standards (allowable alternates + equivalency).
3. Tolerances & fits (ISO 286, KPCs, ISO 2768 if used).
4. Surface & edges (Ra/lay, deburr/chamfer, coating/passivation specs).
5. Special processes (HT/weld/peen/coating; Nadcap?).
6. Inspection (FAI/PPAP, sampling plan, NDT %, functional/pressure/leak).
7. Compliance (AS9100/IATF/PED/NORSOK/RCC-M).
8. Packaging & ID (VCI/vacuum, trays, barcode).
9. Lead-time/MOQ/partial shipments.
10) Assembly-Phase Controls
Galvanic compatibility; protect sealing/fit surfaces.
Duplex weld heat-input & phase; post-weld pickling/passivation.
Torque/angle or tension control on fasteners.
System cleanliness (hydraulic/fuel/oxygen/vacuum); no chloride cleaners.
Datum/locators & tolerance stack-up verification on site.
11) Risk Checklist
Undeclared GD&T/general tolerances/fit system;
Ambiguous thread & sealing spec;
Surface only “Ra” without sampling length/filter/lay;
Unvalidated material substitutions;
Duplex/Ni alloys: tool/heat issues → sigma phase/work-hardening;
Unqualified HT/coating (lack of Nadcap where needed);
No SPC/MSA → poor capability; incomplete FAI/PPAP;
Poor packaging for mirror/e-polish → scratches/contamination.
12) Representative Precision Machining Providers (non-exhaustive; verify scope/certs)
On-demand platforms: Fictiv, Protolabs, Xometry.
Aerospace/Energy machining & structures (some BU’s accept build-to-print): Barnes Aerospace, GKN Aerospace, Magellan Aerospace, PCC Aerostructures, SKF Aerospace, MTU Aero Engines.
Regional clusters: Germany (B-W/Bavaria), Italy (Lombardy/Emilia-Romagna), USA (Midwest/West Coast), Japan (Aichi/Shizuoka), China (Suzhou/Ningbo/Dongguan/Qingdao), Korea & Taiwan, China (electronics/general machining).
(Capabilities & certifications evolve; request latest capability sheets, cert scope, and last-3-year references in RFQ.)
13) Sample Spec Lines (copy-ready)
• Valve body (O&G, NACE)
“Valve Body; Material ASTM A182 F51 (UNS S31803/S32205); Rough→Finish per dwg; Threads ASME B1.20.1 NPT; NDT PT+UT 100% to ISO 17635; Surface ASTM A967 Passivation; CoC + EN 10204 3.1 + CMM; Pack VCI + caps.”
• Pump shaft (seawater)
“Shaft; Material 17-4PH H1150; Tolerance h6; TIR ≤ 0.01 mm; Surface Ra ≤ 0.4 µm; Balance G2.5 @ 3000 rpm; NDT MT; HT cert + CMM + Balance report.”
• Semiconductor carrier ring
“Carrier Ring; Material 316L (ESR, low-S); Finish Ra ≤ 0.25 µm; ASTM B912 electropolish + ASTM A967 passivation; Cleanliness ASTM G93; particle/residue per spec; double-bag cleanroom pack; full traceability.”
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