ISO 15590-3 L290 Flanges Definition
ISO 15590-3 L450 Flanges is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.
ISO 15590-3 L450 Flanges Petroleum and natural gas industries Induction bends, fittings and flanges for pipeline transportation systems b Part 3: Flanges)
ISO 15590-3 L450 Flanges This part of ISO 15590 applies to weldneck and blind flanges (full face, raised face, and RTJ groove) as well as anchor, swivel-ring flanges and orifice flanges.
This part of ISO 15590 specifies the technical requirements for carbon steel and low-alloy steel forged flanges for use in pipeline transportation systems for the petroleum and natural gas industries as defined in ISO 13623.
This part of ISO 15590 designates those categories of flanges that meet the industry’s need to match ISO 3183 pipe. These flanges are for normal and low-temperature service and include supplementary requirements where required for sour service.
ISO 15590-3 L450 Flanges is readily available for applications in the Industrial and Transportation fields.





ISO 15590-3 L450 Flanges Range
| ISO 15590-3 L450 Flanges Specification | ISO 15590-3:2004 |
| ISO 15590-3 L415 Flanges Manufacturing Process | Hot Forging / Rolling / Machining |
| ISO 15590-3 L450 Flanges Other Grades | ISO 15590-3 L245 / ISO 15590-3 L290 / ISO 15590-3 L360 / ISO 15590-3 L415 / ISO 15590-3 L450 / ISO 15590-3 L485 |
| ISO 15590-3 L450 Flanges Outer Diameter | 1/2″ NB TO 64″ NB |
| ISO 15590-3 L450 Flanges Pressure Class | Class 150#, Class 300#, Class 400#, Class 600#, Class 900#, Class 1500#, Class 2500# or As Per Custom Requirement PN 6, PN 10, PN 16, PN 25 and PN 40 etc |
| ISO 15590-3 L450 Flanges Schedule | Sch 10s TO Sch XXS or As Per Custom Requirement |
| ISO 15590-3 L450 Flanges Facing | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| ISO 15590-3 L450 Flanges Dimension | ASME B16.5, ASME B16.47 SERIES A, ASME B16.47 SERIES B, ASME B16.36, BS10, EN1092-1:2013, MSS SP44, ASA, API-605, ISO 7005, ISO 15590-3, DIN 2631–2638, DIN 2573-2576, DIN 2527, DIn 2641-2642, DIN 2565-2566, DIN2502, AWWA, AS2129 TABLE C, D, E, F, J etc.. |
| ISO 15590-3 L415 Flanges Types | Welding Neck Flange, Slip On Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Blind Flange, Orifice Flanges, Plate Flange, Long Welding Neck Flanges, Weldoflange, Nipoflange, Expander Flange, Reducing Flange, WNRF Flange, SORF Flange, SWRF Flange, Custom Flange as per Drawing etc. |
| ISO 15590-3 L450 Flanges Other Testing | NACE MR0175, Ultrasounic Test, Charpy Impact Test, Macro, Grain Size, Hardness, HIC, SSC, Sour Service, A for annealed, N for normalized, NT for Normalized and Tempered, or QT for Quenched and Tempered, Carbon Equivalent etc. |
| ISO 15590-3 L450 Flanges Value Added Services | Rolling, Drill, Punch, CNC Machining, Sand Blasting, Shot Blasting, Heat Treatment, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
| ISO 15590-3 L450 Flanges Packaging | Loose / Carrate / Wooden Pallet / Wooden Box / Plastic Cloth Wraps |
| ISO 15590-3 L450 Flanges Shipment & Transportation | By Road – Truck / Train Partial Load, Full Load, By Sea – Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air – Freighter Civil Passenger and Cargo Planes |
| ISO 15590-3 L450 Flanges Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved etc. |
ISO 15590-3 L450 Flanges Chemical Compostion and Properties
The chemical composition of grade ISO 15590-3 L450 Flanges is outlined in the following table
| Concentration in Alloys % mass fraction |
||||||
| Element | Non-sour service (designation N and L) |
Sour service (designation NS and LS) |
||||
| C | 0,20 | 0,18 | ||||
| Mn | 1,60 | 1,30 | ||||
| Si | 0,40 | 0,40 | ||||
| P | 0,025 | 0,025 | ||||
| S | 0,010 | 0,003 | ||||
| V | 0,10 | 0,10 | ||||
| Nb | 0,05 | 0,05 | ||||
| Ti | 0,04 | 0,04 | ||||
| Cr | 0,25 | 0,25 | ||||
| Mo | 0,10 | 0,10 | ||||
| Ni | 0,50 | 0,50 | ||||
| Cu | 0,35 | 0,35 | ||||
| Al | 0,06 | 0,05 | ||||
| N | 0,010 to 0,030 | 0,012 | ||||
| B | 0,001 | 0,0005 | ||||
| Ca | 0,006 | 0,006 | ||||
| CE | 0,45 | 0,43 | ||||
ISO 15590-3 L450 Flanges Mechanical and Physical Properties
The mechanical properties of grade ISO 15590-3 L450 Flange are displayed in the following table.
| Steel Grade SMTS | SMTS | Elongation | Minimum average Charpy V-notch value | Minium Charpy V-notch Value |
|---|---|---|---|---|
| N/mm2 | N/mm2 | % | J | J |
| 245 | 415 | 22 | 27 | 22 |
| 290 | 415 | 21 | 30 | 24 |
| 360 | 460 | 20 | 36 | 30 |
| 415 | 520 | 18 | 42 | 35 |
| 450 | 535 | 18 | 45 | 38 |
| 485 | 570 | 18 | 50 | 40 |
| 555 | 625 | 18 | 56 | 45 |
| The tensile requirements for intermediate grades shall be obtained by interpolation between those specified for standard grades. | ||||
ISO 15590-3 L450 Flange Application
- Oil and Gas Industries
- Food Processing Industries
- Equipments
- Pipeline
- Power Industries
- Ship Building Industries
- Paper Industries
- Cement Industries
- Chemical Industries
| DATASHEET FOR PIPELINE FLANGES 2″-600#, 5.6MM THK | Project Name: 16″ Pipeline from Bisat to Yibal Project No.: 73022 Purchase Order No.: — Item No.: 003 (Refer Clause 3 of the Requisition) | ||
|---|---|---|---|
| Sl.No. | DESCRIPTION | DATA | TO BE FILLED BY VENDOR (NOTE-3) |
| I | CONNECTED PIPELINE DETAILS | ||
| 1 | Pipeline Design Data | Refer Appendix II of the Requisition for CS Pipeline Flanges | |
| II | FLANGE DETAILS | ||
| 1 | Flange Type | Weld Neck | |
| 2 | Nominal Flange Size (Nominal Diameter) | NPS 2 (DN 50) | |
| 3 | Flange Rating | Class 600 | |
| 4 | Material Specification & Grade | ISO 15590-3, L450, NS | |
| 5 | Thickness of Hub (WT at welding end), mm | 5.6 | |
| 6 | Flange Bore, mm | 49.1 | |
| 7 | Flange Face | RF | |
| 8 | End Preparation | As per ASME B31.4 | |
| 9 | Protective Coating (Internal) | Rust preventive – Removable (Vendor to specify) | |
| 10 | Preventive Coating (External) | Rust preventive – Removable (Vendor to specify) | |
| 11 | Installation | A/G | |
| 12 | Design Life, Years | 25 | |
| 13 | Design Factor | 0.6 | |
| 14 | Corrosion Allowance (mm) | 3 | |
| III | FLANGE – INSPECTION, TESTING & CERTIFICATION (NOTE 2) | ||
| 1 | Flange Criticality Rating | CR-B | |
| 2 | Flange Mfg. Testing & Inspection (Note-2) | As per ISO 15590-3 / ASME B16.5 and approved ITP | |
| 3 | Chemical Composition (Base / Weld metal) | As per ISO 15590-3 and NACE MR0175/ISO 15156 for sour service | |
| 4 | Hardness | ≤ 250 HV10 as per NACE MR0175/ISO 15156 for base / weld metal & HAZ | |
| 5 | Tensile Test | Required, as per ISO 15590-3 | |
| 6 | CVN Impact Test | Required, as per ISO 15590-3 | |
| 7 | Hardness Test | Required, as per ISO 15590-3 | |
| 8 | HIC Test | (Note-3) | |
| 9 | SSC Test | N/A (Note-4) | |
| 10 | NDT or NDE | Required, as per ISO 15590-3 / ASME B16.5 | |
| 11 | Factory Hydrotest | Note-5 | |
| 12 | Certification | As per VQMR | |
| IV | Flange – Design Limits | ||
| 1 | Design Pressure,Bar(g) | 94.6 | |
| 2 | Field Hydrostatic Test Pressure (System hydrotest) | As per ASME B31.4 | |
| 3 | Min./ Max. Design Temperature,ºC | 5/90 deg C | |
| NOTES | |||
| 1 | This data sheet shall be read in conjunction with Material Requisition for Pipeline Flanges, Doc. No. BST-14-PPL-REQ-TEB-73022 -00004-00. | ||
| 2 | For more detail regarding inspection, testing & certification; refer VQMR of requisition. | ||
| 3 | Where manufacturer confirms that chemical composition including sulphur contents are in line with ISO 15590-3, HIC testing is not applicable. | ||
| 4 | SSC testing is not required for forged flanges and material qualified as per Clause A.2 of NACE MR0175/ISO 15156. | ||
| 5 | Hydrostatic testing of flanges is not required however bidder to confirm that flange can withstand the pressure of 1.5 times 38 deg C rating (i.e.154 barg). | ||
| 6 | Manufacturer shall provide compliance against each item in the data sheet (including notes). | ||
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