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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
Oil & Gas Steel
Oil & Gas Steel
Oil & Gas Steel｜Global Sourcing for Engineering & Procurement
1. Product Positioning & Scope
Positioning: For upstream facilities and near-wellhead systems covering transmission and gathering lines, station process, water injection and seawater service, offshore platforms and subsea flowlines, low-temperature export, and wellhead/X-mas tree interfaces. Includes metallic line pipe, BW/SW/THD fittings, flanges, fasteners, and CRA clad/lined or weld-overlay solutions (metallurgical clad, mechanically lined, and overlays). Applicable to high-pressure, sour (H₂S/CO₂), high-chloride, deep-water external pressure/installation strain, low-temperature, and high-temperature thermal-recovery services.
2. Standards Matrix (top-down)
Design & welding: ASME B31.8 (gas transmission), ASME B31.4 (liquids), ASME B31.3 (process); field welding to API 1104.
Product & materials:
• Line pipe: API 5L/ISO 3183 (PSL2 baseline; Annex H for sour; Annex J offshore); China GB/T 9711.
• OCTG boundary: API 5CT/ISO 11960 (casing/tubing, scope note only).
• Clad/lined: API 5LD (metallurgically clad/mechanically lined CRA pipe).
• ASME/ASTM bases: A106/A53 (CS), A333 (LTCS), A335 (Cr-Mo), A312/A358 (austenitic SS), A790/A928 (duplex SS), B423/B444/B622 (Ni-base).
• Fittings: ASME B16.9/B16.11; high-strength MSS SP-75/ASTM A860 (WPHY42–70); stainless/duplex ASTM A403/A815; Ni-base ASTM B366.
• Flanges/forgings: ASME B16.5/B16.47; materials A105, A350 LF2, A694 F52–F70, A182 grades; wellhead/tree interface API 6A (6B/6BX).
Corrosion & materials selection: ISO 15156 (NACE MR0175) and ISO 21457. External coating & field joint: ISO 21809-1/-2/-3 with holiday testing to NACE SP0188. Offshore/subsea: DNV-ST-F101; materials and coatings per NORSOK M-630/M-501 where specified.
3. Scenario—Material—Standard—Size Mapping (quick guide)
1. Sweet/low-corrosivity dry gas (onshore gathering): API 5L PSL2 X52–X70 (HFW/SAWL/SMLS), external FBE or 3LPO (ISO 21809) plus CP; station flanges A105 or A694 F52–F60 to ASME B16.5/B16.47. Typical OD 6–1200 mm (~1/2–56 in), WT 3–40 mm.
2. Moderate sour (H₂S/CO₂ + moderate Cl⁻): API 5L PSL2 + Annex H (hardness cap, SSC/HIC); internal coating or corrosion allowance; local CRA lining/overlays where needed.
3. Severe sour/deep-water/seawater reinjection or high-Cl⁻ injection: CS pressure wall + CRA (316L/2205/625/825) clad or lined per API 5LD; subsea design per DNV-ST-F101 for external pressure, stability, and fracture control.
4. Offshore platform & seawater systems: Unified pipe–fitting–flange in 2205/2507 (A790/A815/A182 F51/F53/F55); coatings to ISO 21809 and NORSOK M-501 where adopted.
5. Wellhead/X-mas tree (HP/HT + sour): API 6A equipment for bodies/manifolds; A335 P22/P91 for hot sections; 625/825 weld overlay or CRA components on flow path and sealing bands; specify PSL, PR, material class, and temperature class; ring type 6B/6BX.
6. Low-temperature export (≈ −46 °C): Pipe A333 Gr.6; flanges/forgings A350 LF2; fittings A420 WPL6; impact and leak-tightness tests.
7. Thermal recovery/steam flood (≈ 540–600 °C): A335 P22/P91 with strict PWHT, hardness and creep appraisal; welding to ASME IX and project spec.
4. Size Range & Tolerances (ordering basis)
• Line pipe OD 6–1200 mm, typical WT 3–40 mm; lengths 6 or 12 m or project cut lengths. Ends and bevels per API 5L and ASME B16.25. For large-diameter/WT offshore lines, prefer SAWL (UOE/JCOE); SMLS and HFW also available.
• Flange ratings per ASME B16.5 (Class 150–2500, ≤ 24 in) and ASME B16.47 (Series A/B, 26–60 in); wellhead/tree flanges API 6A 6B/6BX (approx. 2–20 ksi). High-strength BW fittings to MSS SP-75/ASTM A860 matching line-pipe yield.
5. Manufacturing & Critical Controls
• Forming routes: SMLS (pierce-roll/hot-extrude + cold sizing), HFW/ERW, SAWL (UOE/JCOE), SAWH.
• Heat treatment: CS/low-alloy normalized or Q&T; austenitic/duplex/Ni-base solution-annealed and water-quenched; P91/P92 with qualified thermal history and PWHT.
• External coatings: FBE, 3LPE/3LPP to ISO 21809 with adhesion/bend/peel/holiday testing; compatible field-joint systems and CP as required.
• Internals: flow or epoxy internal coatings; API 5LD metallurgical clad or mechanically lined (typ. 316L/2205/625/825); local 625 overlays with chemistry/hardness/dilution control.
6. Quality Control & Documentation (ITP outline)
• API 5L PSL2 baseline: chemistry, tensile, CVN, dimensions and NDT; Annex H adds hardness cap, SSC (NACE TM0177), HIC (NACE TM0284) and sampling locations/ratios. DWTT where applicable; subsea often needs CTOD per Owner spec.
• BW fittings: MSS SP-75/ASTM A860 chemistry/mechanical/impact/hardness + NDT; control thickness, bend radii, end dimensions. Flanges/forgings: A105/A350 LF2/A694 mechanicals & impact; face type/roughness/hardness.
• PMI: 100% on critical alloys/welds (API RP 578); duplex ASTM A923 where required. Coating QC per ISO 21809 (cleanliness, DFT, adhesion, peel, bend, holiday); field-joint compatibility. Documentation: EN 10204 3.1/3.2, heat-treat charts, original NDE, pressure/leak, hardness, SSC/HIC, PMI, coating QC, third-party witness.
7. Supply Forms & Packing
• End protection & preservation: plastic caps/blinds; internals dry and clean; segregate protection for sour/CRA items. Marking includes standard/grade/PSL/Annex H or J/dimensions/heat no./route (SMLS/HFW/SAWL)/NDE class/coating system; show “UP” arrows and lift points. Packaging: strapped with anti-scuff pads, crates/skids; sea-freight salt-spray protection; ship with COA/MTC and the ITP pack.
8. Ordering Checklist (ready to reuse)
1. Code/standard versions: ASME B31.4/B31.8/B31.3, API 1104, API 5L (Annex H/J as applicable), API 6A, ISO 21809, ISO 15156, ISO 21457, DNV-ST-F101.
2. Products & grades: e.g., Pipe API 5L PSL2 L415 (X60) + Annex H; Fitting MSS SP-75 WPHY60; Flange A694 F60 (ASME B16.5 rating).
3. Dimensions & ends: OD × WT × L or NPS × Schedule; ends (PE/BE/BW/SW/THD/RTJ); bend radii.
4. Sour details: SSC/HIC methods, sampling, ratios; hardness caps (base/weld/HAZ); chloride and pH ranges.
5. External coating & field-joint: ISO 21809-1/-2 layers, DFT, adhesion/bend/peel, holiday; field-joint materials/procedures.
6. Internal coat/liner/cladding: type & DFT; API 5LD or 625 overlay minimum effective thickness/chemistry/hardness/dilution.
7. NDE & pressure: UT/RT/TOFD proportions and acceptance; per-piece hydro or equivalent; DWTT/CTOD if specified.
8. PMI & documents: PMI scope; MTC 3.1/3.2, NDE, pressure, heat-treat, SSC/HIC, A923 (duplex), coating QC; TPI witness points.
9. Wellhead/tree items: API 6A PSL/PR/material class/temperature class; ring-joint type (6B/6BX).
9. Materials Selection Guide (essentials)
• Carbon/line-pipe: API 5L Gr.B, X42–X70 (PSL2); add Annex H for sour.
• Low-alloy Cr-Mo & CSEF: A335 P11/P22/P91/P92 (steam/thermal recovery/high-temp station) with strict PWHT/hardness/metallography.
• Austenitic SS: A312 304L/316L/321/347/904L (acid water/moderate Cl⁻); evaluate Cl-SCC/IGC at higher Cl⁻/T.
• Duplex/super duplex: A790 S32205 (2205)/S32750/S32760 (2507/Zeron100) for injection/seawater/high-Cl⁻/REAC.
• Ni-base/special: Alloy 825 (B423)/625 (B444)/C-276 (B622) for severe sour/deepwater/high-temperature corrosion.
• Low-temperature: A333 Gr.6 (≈ −46 °C); 9%Ni or austenitics for colder duty.
• Clad/lined/overlays: API 5LD; internal 625/347 overlays per ASME IX + API RP 582.
10. Procurement, Construction & O&M Risk Notes
• Material mix-ups: 100% PMI in high-consequence areas; segregate Ni-base/duplex/6Mo from CS.
• Annex H shortfalls: missing hardness/SSC/HIC coverage on welds/HAZ; missing sampling ratios/locations.
• 316L misapplication: no Cl-SCC/IGC check in H₂S + Cl⁻ or elevated T—switch to 2205/2507/6Mo/Ni-base.
• CSEF weld/PWHT control loss: P91/P92 released without qualified cycle/hardness windows.
• Subsea field-joint/coating defects: incompatible systems; missing holiday/adhesion testing.
• API 6A vs. ASME B16 mixing: mismatched interfaces/gaskets/bolting leading to leakage.
11. Sample Spec Lines (ready to paste)
• Onshore sour gathering trunkline:
“Pipe, API 5L PSL2 L415 (X60) — Annex H (Sour), OD 406.4 mm × WT 12.7 mm, SAWL (UOE), 12 m; CVN @ −20 °C; SSC per NACE TM0177, HIC per TM0284; welds UT/RT per spec; External 3LPE per ISO 21809-1, holiday per NACE SP0188; MTC EN 10204 3.2, full traceability.”
• Station—high-strength BW fitting:
“Elbow LR 90°, MSS SP-75 / ASTM A860 WPHY65, to match X65 linepipe; Bevel BW per ASME B16.25; NDE per SP-75; Charpy @ MDMT; hardness control per ISO 15156.”
• Process flanges (station):
“Flange, ASME B16.5 Class 600, ASTM A694 F65, RF, NPS 12; facing finish per B16.5; sour bolting A193 B7M / A194 2HM; MTC 3.1.”
• Wellhead/X-mas tree interface:
“Flange, API 6A 6BX, 10,000 psi, PSL 3 / PR 2; Material Class DD/EE as specified; Temp Class per datasheet; RTJ ring BX-xxx; MPS & NDE per API 6A; 100% PMI.”
• Seawater injection (duplex):
“Pipe ASTM A790 S32205, NPS 10 Sch 40S, SMLS, solution-annealed & pickled; Fittings ASTM A815 S32205; Flanges A182 F51 Class 300; ASTM A923 (A/B/C) pass; PMI 100%.”
• Low-temperature export (≈ −46 °C):
“Pipe ASTM A333 Gr.6, NPS 12 Sch 40, SMLS; Flanges A350 LF2 Class 300; Fittings A420 WPL6; Charpy @ −46 °C; hydro & leak per project.”
12. Representative Manufacturers (indicative; subject to PQ)
• Linepipe/seamless CS & alloy: Tenaris, Vallourec, Nippon Steel, JFE, Sumitomo, TMK, TPCO, Baowu/Jiangbei/Hengyang/Changbao, SeAH, Husteel, Jindal SAW, ArcelorMittal.
• Stainless/duplex/Ni-based tubing: Alleima (Sandvik), Tubacex, Tubos Reunidos, BUTTING, Salzgitter Mannesmann Stainless, Jiuli, Tsingshan, KME, RathGibson, Fine Tubes.
• Large-diameter LSAW/offshore: EEW Group, Europipe, JFE, Nippon Steel, Jindal SAW, Baoji/CNOOC group.
• Butt-weld fittings: IBF, Tectubi Raccordi, Raccortubi, M.E.G.A., Erne Fittings, Benkan, compliant PRC shops.
• Flanges/forgings: ULMA, Galperti, Metalfar, Ishikawajima, KOFCO, compliant PRC shops (PED/AD2000/3.2 capable).
• API 6A (wellhead/tree): SLB (Cameron), TechnipFMC, Dril-Quip, Aker Solutions, Weir, regional licensees with valid API Monogram.
Oil & Gas Steel (Pipe / Fittings / Flanges) ｜Technical Specifications
1) Product Definition & Scope
• Scope. Metallic line pipe, butt-weld / socket-weld / threaded fittings, flanges and fasteners for upstream surface systems: wellhead / Xmas tree interfaces, gathering / water injection, station process piping, cross-country transmission, offshore topsides / subsea flowlines, and LNG / low-temperature sections; includes CRA clad / lined and weld-overlaid components.
• Service envelope. High pressure (up to 20 ksi API 6A equipment), sour (H₂S/CO₂), high-chloride injection / seawater, low temperature (−46 to −196 °C), high-temperature steam / thermal recovery, deepwater external pressure and installation strain, etc.
2) Standards Matrix (top-down, plain text)
• Piping design / welding. ASME B31.8 (gas transmission), B31.4 (liquid transmission), B31.3 (station process). Field pipeline welding: API 1104.
• Product standards.
– API 5L / ISO 3183 (line pipe; PSL2 baseline; Annex H for sour; Annex J for offshore); GB/T 9711 (China line pipe).
– API 5CT / ISO 11960 (casing/tubing) — OCTG only.
– API 5LD (metallurgically clad / mechanically lined CRA pipe).
– ASME/ASTM: A106/A53 (CS), A333 (LTCS), A335 (Cr-Mo), A312/A358 (austenitic SS), A790/A928 (duplex), B423/B444/B622 (Ni-base).
– Fittings: ASME B16.9/B16.11; high-strength: MSS SP-75 / ASTM A860 (WPHY 42–70); stainless/duplex: ASTM A403/A815; Ni-base: ASTM B366.
– Flanges/forgings: ASME B16.5/B16.47; materials A105 / A350 LF2 / A694 F52–F70 / A182 Fxx; API 6A 6B/6BX for wellhead/tree.
• Wellhead / Xmas tree. API 6A (PSL1–4, PR1/PR2, temperature class, material classes AA–HH, etc.).
• External coating / field joint. ISO 21809-1/-2/-3 (3LPE/3LPP/FBE/field joint); holiday testing NACE SP0188.
• Materials selection / corrosion. ISO 15156 (NACE MR0175), ISO 21457.
• Subsea / offshore. DNV-ST-F101; materials per NORSOK M-630 / coatings per NORSOK M-501.
• China companions (optional). GB/T 12459/13401 (butt-weld fittings), HG/T 20592–20635 (flanges / gaskets / fasteners).
3) Materials System & Grades (engineering mainstream, with notes)
• Carbon / line-pipe steels. API 5L Gr.B, X42–X70 (PSL2); for sour sections, add Annex H (SSC/HIC/hardness controls).
• Low-alloy Cr-Mo / CSEF. A335 P11/P22/P91/P92 (steam / thermal recovery / high-temperature station service); strict PWHT / hardness / metallographic control.
• Austenitic stainless. A312 304L/316L/321/347/904L (acid water / moderate Cl⁻); assess Cl-SCC/IGC for high-Cl⁻ or higher temperature.
• Duplex / super duplex. A790 S32205 (2205) / S32750 / S32760 (2507 / Zeron 100) for injection / seawater / high-Cl⁻ fluids / REAC services.
• Ni-base / specialty. Alloy 825 (B423) / 625 (B444) / C-276 (B622), etc., for severe sour / deepwater / high-temperature corrosion ends.
• Low-temperature. A333 Gr.6 (−46 °C); for cryogenic use 9%Ni or austenitic grades.
• CRA clad / lined / overlays. API 5LD for clad/lined; internal 625 / 347 weld overlay where needed (controlled to ASME IX + API RP 582).
4) Dimensions & Pressure Ratings (ordering basis)
• Line pipe: OD 6–1200 mm (½″–56″); WT 3–40 mm common; lengths 6 / 12 m or project cut-lengths.
• Flanges: ASME B16.5 (Class 150–2500, ≤24″); B16.47 (Series A/B, 26–60″); wellhead API 6A 6B/6BX (2–20 ksi).
• High-strength butt-weld fittings: MSS SP-75 / ASTM A860 WPHY 42/52/60/65/70, matching linepipe yield strength.
• Ends & bevels: Standard bevels per API 5L / ASME B16.25; control out-of-roundness / land / mismatch per code and WPS.
5) Manufacturing & Coating / Internal Lining
• Forming. Seamless (SMLS) (pierce-hot roll / hot extrude + cold sizing); HFW/ERW, SAWL (UOE/JCOE), SAWH for welded. Subsea / heavy wall: prefer SAWL.
• Heat treatment. CS/low-alloy normalized or Q+T; austenitic/duplex/Ni-base solution anneal water-quench; P91/P92 under tight thermal history and PWHT control.
• External coating. FBE, 3LPE/3LPP (ISO 21809) with adhesion / bend / peel / holiday tests; coordinate cathodic protection and field joint systems.
• Internal coating / lining. Epoxy internal / flow coat (compatibility & cleanliness); API 5LD CRA clad/lined (316L/2205/625/825); local corrosion zones may use 625 weld overlay.
6) Service → Material → Standard: Quick Mapping (text)
1. Sweet gas / low-corrosion dry gas (onshore gathering). API 5L PSL2 X52–X70 (HFW/SAWL/SMLS), FBE/3LPE + CP; station flanges A105 / A694 F52–F60.
2. Moderate sour (H₂S/CO₂ + moderate Cl⁻). API 5L PSL2 + Annex H (SSC/HIC/hardness) + internal coating / corrosion allowance; local CRA lining / overlays as needed.
3. Severe sour / deepwater / high-Cl⁻ injection or seawater reinjection. CS + CRA (316L/2205/625/825) clad or lined (API 5LD); for subsea, apply DNV-ST-F101 external pressure / stability / fracture-propagation controls.
4. Offshore platform / seawater systems. 2205/2507 across pipe–fitting–flange (A790/A815/A182 F51/F53/F55); coatings per ISO 21809 and NORSOK M-501 where adopted.
5. Wellhead / Xmas tree (HP/HT + sour). API 6A equipment for bodies/manifolds; A335 P22/P91 for hot sections; 625/825 weld overlay or CRA components in the flow path & sealing bands; specify material class / PSL / PR / temperature class.
6. Low temperature (−46 °C LPG / condensate). A333 Gr.6 pipe + A350 LF2 flanges/forgings + A420 WPL6 fittings; impact & leak-tightness.
7. Thermal recovery / steam flood (540–600 °C). A335 P22/P91; strict PWHT / hardness and creep appraisal; welding per ASME IX / project spec.
7) Quality Control & Verification (ITP outline)
• API 5L PSL2 baseline: chemistry / tensile / CVN impact, dimensions & NDT. Annex H adds hardness cap / SSC (NACE TM0177) / HIC (TM0284) with sampling locations / ratios.
• Large OD / low-temperature toughness: DWTT where applicable; subsea per Owner spec may require CTOD / fracture toughness.
• Butt-weld fittings: MSS SP-75 / ASTM A860 chemistry / mechanical / impact / hardness + NDT; control thickness, radii, end dimensions.
• Flanges / forgings: A105 / A350 LF2 / A694 mechanicals & impact; face type (RF/RTJ), hardness & surface finish.
• PMI. 100% PMI on critical alloys / welds (API RP 578); duplex ASTM A923 (harmful phases) where required.
• Coating QC. For ISO 21809 systems: surface cleanliness, DFT, adhesion, peel, bend, holiday; field joint compatibility.
• Documentation. EN 10204 3.1/3.2, heat-treat charts, original NDE records, pressure / leak tests, hardness, SSC/HIC, PMI, coating QC, and third-party witness reports (BV/LR/TÜV/SGS).
8) Delivery & Packing
• End protection & preservation. Plastic caps / blinds; internals dry and free of debris; segregated protection for sour / CRA items.
• Marking. Standard / grade / PSL / Annex H or J / dimensions / heat number / manufacturing route (SMLS/HFW/SAWL) / NDE class / coating system; “UP” arrows and lift points.
• Packaging. Strapped with anti-scuff pads; crates / steel skids; sea-freight salt-spray protection; ship with COA/MTC and the ITP document pack.
9) Ordering Checklist (ready to reuse)
1. Code/standard versions: B31.4 / B31.8 / B31.3, API 1104, API 5L / Annex H (/J), API 6A, ISO 21809, ISO 15156, ISO 21457, DNV-ST-F101 (if applicable).
2. Products & grades: e.g., Pipe: API 5L PSL2 L415 (X60) + Annex H; Fitting: MSS SP-75 WPHY60; Flange: A694 F60 (ASME B16.5 Class xxx).
3. Dimensions & ends: OD × WT × L or NPS × Sch; ends (PE/BE/BW/SW/THD/RTJ); bend radii.
4. Sour specifics: SSC/HIC methods / sampling / ratios; hardness caps for base / weld / HAZ; chloride and pH range.
5. External coating / field joint: ISO 21809-1/-2 system, layer thicknesses, adhesion / bend / peel, holiday testing; field-joint materials & procedures.
6. Internal coat / liner / cladding: coating type & DFT; 5LD (clad/lined) or 625 weld overlay minimum effective thickness / chemistry / hardness / dilution control.
7. NDE / pressure: UT/RT/TOFD proportions & acceptance; hydrotest (per-piece or equivalent); DWTT / CTOD if specified.
8. PMI / documentation: PMI scope; MTC 3.1/3.2, NDE, pressure, heat-treat, SSC/HIC, A923 (duplex), coating QC; TPI witness points.
9. Wellhead / tree items: API 6A PSL / PR / material class / temperature class, ring-joint type (6B/6BX).
10) Construction Quality & Risk Control (checklist)
• Material mix-ups. 100% PMI in high-consequence areas; segregate Ni-base / duplex / 6Mo from carbon steel.
• Annex H shortfall. Missing hardness/SSC/HIC coverage for welds & HAZ, or missing sampling ratios/locations.
• 316L misapplication. No Cl-SCC/IGC assessment in H₂S + Cl⁻ or elevated temperatures—switch to 2205/2507/6Mo/Ni-base.
• CSEF weld/PWHT control loss. P91/P92 released without following the qualified thermal cycle and hardness windows.
• Subsea field-joint / coating defects. Field-joint system not compatible with parent coating; missing holiday / adhesion testing.
• API 6A vs. B16 mixing. Mismatched interfaces / gaskets / fasteners causing leakage.
11) Sample Spec Lines (ready to paste into RFQ/PO)
• Onshore sour gathering trunkline
“Pipe, API 5L PSL2 L415 (X60) — Annex H (Sour), OD 406.4 mm × WT 12.7 mm, SAWL (UOE), 12 m, CVN @ −20 °C, SSC per NACE TM0177 / HIC per TM0284, welds UT/RT per spec; External 3LPE per ISO 21809-1, holiday test per NACE SP0188; MTC EN 10204 3.2, full traceability.”
• Station—high-strength butt-weld fittings
“Elbow LR 90°, MSS SP-75 / ASTM A860 WPHY65, to match X65 linepipe, Bevel BW per B16.25, NDE per SP-75, Charpy @ MDMT, Hardness control per ISO 15156.”
• Process flanges (station service)
“Flange, ASME B16.5 Class 600, ASTM A694 F65, RF, NPS 12″, facing finish per B16.5, bolts A193 B7M / A194 2HM for sour, MTC 3.1.”
• Wellhead / Xmas tree interface
“Flange, API 6A 6BX, 10,000 psi, PSL 3 / PR 2, Material Class DD/EE as specified, Temp Class per datasheet, RTJ ring BX-xxx, MPS & NDE per API 6A; 100% PMI.”
• Seawater injection (duplex)
“Pipe ASTM A790 S32205, NPS 10″ Sch 40S, SMLS, solution-annealed & pickled; Fittings ASTM A815 S32205, Flanges A182 F51 Class 300; ASTM A923 (A/B/C) pass, PMI 100%.”
• Low-temperature export (−46 °C)
“Pipe ASTM A333 Gr.6, NPS 12″ Sch 40, SMLS; Flanges A350 LF2 Class 300; Fittings A420 WPL6; Charpy @ −46 °C; Hydro & leak per project.”
12) Global Manufacturers & Regional Footprint (representative; subject to project pre-qualification)
• Linepipe / seamless CS & alloy. Tenaris (global), Vallourec (EU/BR), Nippon Steel & JFE (JP), Sumitomo (JP, OCTG/linepipe), TMK (RU/EU), TPCO (China), Baowu / Jiangbei / Hengyang / Changbao (China), SeAH / Husteel (KR), Jindal SAW (IN), ArcelorMittal (EU/US).
• Stainless / duplex / Ni-based tubing. Alleima (Sandvik) (SE), Tubacex / Tubos Reunidos (ES/EU), BUTTING (DE, clad/lined), Salzgitter Mannesmann Stainless (DE), Jiuli / Tsingshan (CN), KME / RathGibson / Fine Tubes (EU/US).
• Large-diameter LSAW / offshore. EEW Group (DE/multi-site), Europipe (DE), JFE / Nippon Steel (JP), Jindal SAW (IN), Baoji / CNOOC group (CN).
• Butt-weld fittings. IBF / Tectubi Raccordi / Raccortubi / M.E.G.A. (IT), Erne Fittings (AT), Benkan (JP), and compliant PRC manufacturers.
• Flanges / forgings. ULMA / Galperti / Metalfar (EU), Ishikawajima / KOFCO (JP/KR), compliant PRC flange shops (PED/AD2000/3.2 capable).
• API 6A (wellhead / tree). SLB (Cameron) / TechnipFMC / Dril-Quip / Aker Solutions / Weir / SULZER Valves (partial scope) plus regional licensees (verify API Monogram).
Pre-qualification focus: current API/ISO certifications & Monogram, EN 10204 3.2 capability, critical-alloy PMI coverage, lab capability for SSC/HIC and A923/CTOD, and qualified ISO 21809 coating & field-joint procedures.ring, and installation.
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