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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
Flanges
Flanges
Flanges｜Global Sourcing for Engineering & Procurement
1. Product Positioning and Scope
Flanges provide detachable connections among pipelines, valves, and equipment. The range covers weld-neck, slip-on, blind, socket-weld, threaded, long-weld-neck, lap-joint, as well as orifice, spectacle blind, reducing/expanding and swivel types. Industries served include onshore/offshore oil & gas, refining & chemicals, power (nuclear/thermal/CSP/energy storage), water & municipal, mining & metallurgy, food & pharma (hygienic), shipbuilding & marine, semiconductors & ultrapure media, and HVAC & fire protection.
2. Standards Matrix
— ASME B16.5 (NPS 1/2″–24″; Class 150/300/400/600/900/1500/2500)
— ASME B16.47 Series A/B (NPS 26″–60″; Class 150/300/400/600/900)
— MSS SP-44 (pipeline flanges)
— ASME B16.9 (buttweld fittings), ASME B16.11 (forged SW/THD), ASME B16.49 (induction bends)
— API 6A (wellhead/tree: 6B, 6BX; 5k–20k psi)
— NORSOK L-005 / ISO 27509 (compact flanges, offshore)
— EN 1092-1 (DN 10–4000; PN 2.5–400; multiple types)
— ISO 7005-1/-2/-3 (international applicability)
— AWWA C207 (waterworks; Class B/D/E/F; not equivalent to ASME Class)
— GB/T 9112/9113, HG/T 20592/20593 (China), for chemical and dual PN/Class systems
— Gaskets and bolting: ASME B16.20/B16.21; EN 1514; ASTM A193/A320/A194; EN 14399/ISO 898; threads per ASME B1.20.1, ISO 7-1, ISO 228-1.
3. Scenario–Material–Standard–Size Mapping
— Oil & Gas (incl. sour): A105 (normalized), A350 LF2, A694, A182 F316L, duplex F51/F53, nickel alloy B564 (e.g., 625); comply with NACE MR0175 or MR0103. Use ASME B16.5/B16.47/MSS SP-44; API 6A for wellhead. NPS 1/2″–60″; Class 150–2500; API 5k–20k psi.
— Power & High-Temperature Steam: A182 F11/F22/F91/F92 with proper heat treatment; ASME B16.5/B16.47; typically NPS 1/2″–48″, Class 300–900.
— Seawater/High-Chloride: A182 F51/F53/F55 or Ni/Ti; ASME B16.5, EN 1092-1, or compact flanges per NORSOK/ISO 27509; PN16–PN40 or Class 300 typical.
— Waterworks & Municipal: CS/DI with cement-mortar or epoxy/PU linings; AWWA C207 with C210/C213/C222 coatings; ~4″–144″ (do not equate AWWA Class to ASME Class).
— Hygienic & Ultrapure: A182 F316L (controlled S) with PTFE/EPDM (FDA/USP-VI); ASME BPE sizes.
— Cryogenic & Hydrogen: A350 LF2/A333 with 304L/316L or Ti as applicable; observe hydrogen embrittlement and He-leak; ASME B16.5/B16.47 with B31.12 considerations.
4. Size Range and Tolerances
— ASME: B16.5 NPS 1/2″–24″ (Class 150–2500); B16.47 NPS 26″–60″ (Class 150–900).
— EN: EN 1092-1 DN 10–4000 (PN 2.5–400; multiple types).
— Facing and Roughness: RF 125–250 AARH typical; RTJ grooves per R/RX/BX and matched rings.
— Bore Match: Flange bore must match pipe OD and wall schedule to avoid step-losses and erosion.
5. Manufacturing and Key Controls
— Forging route: Ingot/CC bloom → open-die forging → ring-rolling/die forging/upset & pierce; ensure flow lines continuity in neck.
— Heat treatment: Normalize/Q&T for CS/AS; solution-quench for stainless/duplex (avoid secondary phases); API 6A parts with strict Q&T control.
— NDE: UT per ASTM A388 with graded zones; add MT/PT as needed.
6. Quality Checks and Documentation
— Chemistry & PMI: heat analysis and incoming PMI; 100% PMI suggested for critical alloys.
— Mechanical & LT: YS/UTS/El; CVN at design temperature (e.g., −46 °C for LF2/WPL6).
— Corrosion & Phase: A262 for austenitic IGC; A923 (A/B/C) and G48 for duplex; hardness limits for sour.
— Geometry & Facing: verify per B16.5/B16.47/EN 1092-1.
— Documentation: EN 10204 3.1/3.2, HT curves, NDE reports, pressure/leak tests if required, and coating QC records.
7. Supply Forms and Packaging
— Delivery: finished flanges with optional gasket, bolting, and isolation kits.
— Protection: pickle & passivate for stainless; shop-primer/FBE/PU/3LPE/3LPP as specified; face protectors, end caps, dry-pack with VCI where needed.
8. Ordering Checklist (copy-ready)
1. Standard & type (e.g., “ASME B16.5 WN RF”).
2. Size & rating (NPS/DN; ASME Class or PN) and bore to pipe schedule.
3. Material & condition (e.g., “A182 F316L solution annealed”, “A350 LF2 Q&T”); NACE MR0175/MR0103 if applicable.
4. Facing & roughness (RF/FF/RTJ/T&G/M&F; RF AARH or RTJ ring type R/RX/BX).
5. Heat treatment & hardness window for high-temp/sour.
6. Inspection & docs (PMI, UT/MT/PT/RT percentages; CVN; A262/A923/G48; EN 10204 3.1/3.2).
7. Coating & packing (pickling/passivation or coating system; face protectors; VCI; moisture control).
9. Quick Material Guide
— Utilities: A105 (normalized) or equivalents.
— Low temperature to −46 °C: A350 LF2 / WPL6 with A320 L7/L7M bolting.
— Seawater/Cl⁻: A182 F51/F53/F55 or Ni alloys.
— High temperature steam: A182 F11/F22/F91/F92.
— Hygienic/ultrapure: BPE 316L (controlled S) with sanitary gaskets.
10. Risks and Mitigations
— Do not equate AWWA Class with ASME Class.
— Do not mate RF with FF.
— Control duplex ferrite/secondary phases via A923 & G48.
— Control hardness for sour service.
— Ensure bore match to avoid erosion and pressure loss.
— Offshore service requires coating and CP; compact flanges where appropriate.
11. Representative Spec Lines (ready to paste)
— “Flange, ASME B16.5, WN RF, NPS 12, Class 600, ASTM A694 F65 (Normalized & Tempered), Bore to NPS12 Sch80, Facing 125–250 AARH, UT per ASTM A388, CMTR EN 10204 3.1.”
— “Flange, EN 1092-1 Type 11 (WN RF), DN300 PN40, ASTM A182 F51 (S32205), Pickle & Passivate per ASTM A380/A967, Gasket EN 1514, Bolting A193 B7/A194 2H, PMI 100%, G48-A @25 °C Pass, CMTR 3.1.”
— “Flange, API 6A 6BX, 10k, RTJ BX-Ring, 4130 Q&T, NACE MR0175 compliant, PSL-3, Hardness per spec, NDE per API 6A, CMTR 3.2.”
— “Flange, AWWA C207 Class D, 84″, CS, Drill per C207, Coating per AWWA C210/C213, Holiday test per AMPP SP0188, CMTR 3.1.”
— “Ferrule, ASME BPE, 316L (low-S), SF1 Ra ≤0.5 µm ID, Electropolished, Gasket PTFE (FDA/USP-VI), Surface report + CMTR.”
Flanges｜Technical Specifications
1) Scope & Use
Detachable pressure-tight connections for piping–valves–equipment–pressure vessels using the “flange–gasket–bolting” system; applicable to O&G, refining, petrochem, power (thermal/nuclear), waterworks, pharma/food, and offshore.
2) Standards & Coverage
• ASME B16.5 (NPS ½″–24″): Class 150/300/400/600/900/1500/2500.
• ASME B16.47 (NPS 26″–60″): Series A/B, Class 150/300/400/600/900.
• ASME B16.36: Orifice flanges.
• ASME B16.48: Line blanks (Spectacle Blind / Spade & Spacer).
• EN 1092-1 (DN 10–4000): PN 2.5–PN 400.
• JIS B 2220: 5K/10K/16K/20K/30K.
• AWWA C207: Waterworks ring/plate flanges (Class B/D/E/F; not equivalent to ASME Class).
• API 6A (6B/6BX): Wellhead/X-mas tree (2000–20000 psi), not interchangeable with ASME B16.5.
• Bolting & Gaskets: ASTM A193/A194; gaskets per ASME B16.20 / EN 1514.
3) Facing & Sealing
• Facing types: RF, FF, RTJ, T&G, M&F.
• RF finish: 125–250 AARH (≈3.2–6.3 μm Ra) stock finish; state if smoother finish is required.
• RF height: 1.6 mm for Class 150/300; 6.4 mm for Class 400–2500.
• RTJ: R-series (oval/oct) for B16.5; RX/BX exclusively for API 6A 6BX.
• Bore match: For WN flanges, specify bore to match pipe schedule (or target ID).
4) Materials & Forging Specs
• Carbon/Low-Temp/High-Yield: ASTM A105 (option: normalized), A350 LF2, A694 F52–F70.
• Alloy (high-temp): ASTM A182 F5/F9/F11/F22/F91.
• Stainless/Duplex/Super Duplex: ASTM A182 F304/L, F316/L, F321, F347; F51 (2205), F53 (S32750), F55 (S32760); F44 (254SMo) if needed.
• Nickel/High-Ni Alloys: ASTM B564 (N04400/Alloy 400, N06625/Alloy 625, N08825/Alloy 825, N10276/C-276, etc.).
• Cladding/Overlay: CRA weld overlay or explosion/hot-roll clad; PTFE/PFA lining for chemical service.
• Sour service: ISO 15156/NACE MR0175; refinery wet H₂S per NACE MR0103.
5) Typical Dimensions/Thickness (indicative; use tables in standards for final sizing)
• B16.5 OD: ~90–1200 mm (NPS ½″–24″).
• B16.5 thickness: ~12–120 mm (Class 150–900), up to 200+ mm for Class 1500/2500.
• B16.47 thickness: ~40–200 mm.
• EN 1092-1 plate/ring: ~12–120 mm; AWWA plate: ~8–75 mm.
• Bolting/Nuts: A193 B7/B7M/L7/L7M/B8/B8M + A194 2H/2HM/7/8/8M to suit service.
6) Product Families & Typical Use
• WN: NPS ½″–60″, Class 150–2500, RF/RTJ/T&G — high temp/high pressure/cyclic service.
• SO: NPS ½″–60″, Class 150–600, RF/FF — utility, condensate/cooling/low-medium pressure.
• SW: NPS ½″–3″, Class 300–1500 — small-bore high pressure branches.
• THD: NPS ½″–4″, Class 150–300 — low pressure/no-hot-work areas.
• BL: NPS ½″–60″, Class 150–2500 — line ends/pressure tests.
• Orifice (B16.36): Class 300–900 — metering/tapped connections.
• Line blanks (B16.48): Spectacle / Spade & Spacer — isolation/blow-through.
• Plate/Ring (EN 1092-1 Type 01 / AWWA C207): large-bore, low pressure waterworks.
• LWN: non-B16.5; vessel nozzles to project/ASME VIII design.
• Swivel/SAE: offshore alignment; hydraulic flanges per ISO 6162/6164/SAE J518.
• API 6A 6B/6BX: wellhead/X-tree; do not mix with B16.5.
7) QA/QC
• Dimensional & facing: PCD, concentricity, facing height and roughness 100% checked.
• PMI & mechanicals: spectro PMI; hardness/impact where required (LT/sour).
• NDT: UT/MT/PT/RT as specified.
• Pressure/leak: flanges alone not routinely hydrotested; blinds/assemblies per PO.
• Surface: no coating on sealing faces/threads; rust preventive + protectors.
• Docs: EN 10204 3.1/3.2 MTC, HT records, NDT/coating reports, NACE statement.
8) RFQ/PO Checklist
• Standard & type (e.g., ASME B16.5 WN RF / EN 1092-1 Type 11 RF).
• Size & rating (NPS 12″ Class 600 / DN300 PN40).
• Facing & roughness (RF/RTJ/T&G, AARH).
• Material & service (e.g., A105N / A350 LF2 / A182 F316L / A182 F51 / B564 N06625; sour/low-temp).
• Mating pipe data (Schedule or target bore).
• Bolting & gasket specs (A193/A194, B16.20/EN 1514).
• Coating/NDT/documentation requirements; explicit note that ASME, EN, AWWA, API 6A systems are not interchangeable without engineering verification.
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