MOC Overview
Four primary material classes covering the full range of industrial, petrochemical, marine, and utility applications.
- Common GradesASTM A106 Gr.B/C, A53 Gr.B, API 5L Gr.B, X42–X70, A333 Gr.6
- Temperature Range-29°C to +427°C
- Size Range (NB)½″ to 60″
- SchedulesSCH 10 / 20 / 40 / 80 / 120 / 160 / XS / XXS
- Pipe StandardsASTM A53 / A106, API 5L, DIN 1629 / 2448, BS 3601 / 3602
- ConstructionSeamless / ERW / LSAW / SSAW
- End FinishPlain End / Bevelled / Threaded
- ApplicationsOil & Gas, Refineries, Power Plants, Water Treatment
- Common Grades304 / 304L / 316 / 316L / 321 / 347 / 317L / 310S / 904L
- Temperature Range-196°C to +816°C
- Size Range (NB)¼″ to 48″
- SchedulesSCH 5S / 10S / 40S / 80S / 160
- Pipe StandardsASTM A312 / A358 / A778, DIN 17457 / EN 10217-7, BS 3605
- ConstructionSeamless / Welded / EFW
- Surface FinishAnnealed & Pickled / Polished (2B, BA, No.4)
- ApplicationsChemical, Pharma, Food Processing, Cryogenic
- Duplex GradesUNS S31803 / S32205 (2205)
- Super Duplex GradesUNS S32750 (2507), S32760 (Zeron 100)
- Temperature Range-50°C to +300°C
- Size Range (NB)½″ to 24″
- SchedulesSCH 10S / 40S / 80S
- Pipe StandardsASTM A790 / A928, EN 10216-5 / 10217-7
- PRENDuplex: ≥35 / Super Duplex: ≥40
- ApplicationsOffshore, Seawater, Pulp & Paper, Desalination
- Copper GradesC10200 (OF), C11000 (ETP), C12200 (DHP), C70600, C71500
- Brass GradesC26000 (70/30), C27200 (63/37), C28000 (Muntz)
- Temperature Range-200°C to +200°C
- Size Range (NB)⅛″ to 12″
- Pipe StandardsASTM B88 / B111 / B466, EN 1057, BS 2871
- ConstructionSeamless / Drawn / Extruded
- TemperSoft (O) / Half-Hard (H55) / Hard (H80)
- ApplicationsHVAC, Plumbing, Marine Heat Exchangers, Desalination
Pipes — Technical Specs
Full dimensional and material specifications. All pipes available with MTCs, NDT reports, and third-party inspection per TPIA/TPI.
Hot-finished and cold-drawn seamless pipes manufactured without a longitudinal weld seam. Preferred for critical high-pressure and high-temperature service.
| Parameter | Carbon Steel | Stainless Steel | Duplex / SDX | Copper / Cu-Ni |
|---|---|---|---|---|
| Material Std. | ASTM A106 / A53, API 5L | ASTM A312 / A213 | ASTM A790 | ASTM B88 / B466 |
| Grades | Gr.B, Gr.C, X42–X65 | TP304/L, TP316/L, TP321, TP347, TP310S, 904L | S31803, S32205, S32750, S32760 | C10200, C12200, C70600, C71500 |
| OD Range | 10.3 mm – 660 mm (NB ⅛″–24″) | 6.35 mm – 508 mm (NB ¼″–20″) | 10.3 mm – 323.9 mm (NB ⅛″–12″) | 6.35 mm – 152.4 mm (NB ⅛″–6″) |
| Wall Thickness | 1.65 mm – 59.5 mm | 0.5 mm – 40 mm | 1.65 mm – 25.4 mm | 0.5 mm – 12 mm |
| Schedules | SCH 20/40/80/120/160/XS/XXS | SCH 5S/10S/40S/80S | SCH 10S/40S/80S | K/L/M (Type) & DIN wall |
| Length | SRL: 4–7 m, DRL: 11–13 m, Fixed | SRL / DRL / Fixed | SRL / Fixed | Straight / Coil / Fixed |
| Delivery Cond. | Normalized / Annealed / HT | Solution Annealed (SA) + Pickled | Solution Annealed (SA) + Pickled | Annealed / Half-Hard / Hard |
| Dimensional Std. | ASME B36.10M | ASME B36.19M | ASME B36.19M | ASTM B88 / EN 1057 |
| NDT Requirements | HT, HYD, UT (if required) | HT, HYD, PMI, UT/RT | HYD, UT, PT/MT, PMI, FERRITE | HYD, ET (Eddy Current) |
| International Equiv. | DIN 1629 / EN 10216-1/2, BS 3602 | DIN 17457 / EN 10216-5, BS 3605 | EN 10216-5 | EN 1057 / BS 2871 Part 1 |
Electric Resistance Welded (ERW) and Electric Fusion Welded (EFW) pipes. Cost-effective for lower pressure, structural, and fluid transport service.
| Parameter | Carbon Steel ERW | Stainless Steel EFW | Duplex EFW |
|---|---|---|---|
| Material Std. | ASTM A53 (Gr.A/B), ASTM A135, API 5L | ASTM A358, A778 | ASTM A928 |
| Grades | Gr.A, Gr.B, Gr.C, X42–X70 | TP304/L, TP316/L, TP321, TP347 | S31803 / S32205 / S32750 |
| OD Range | 21.3 mm – 1219.2 mm (NB ¾″–48″) | 6.35 mm – 609.6 mm (NB ¼″–24″) | 10.3 mm – 406.4 mm |
| Wall Thickness | 1.8 mm – 25.4 mm | 0.5 mm – 30 mm | 2.0 mm – 20 mm |
| Dimensional Std. | ASME B36.10M | ASME B36.19M | ASME B36.19M |
| Weld Type | HF-ERW (High Frequency) | TIG / PLASMA welded | TIG + Plasma-GTAW |
| NDT | HYD, UT weld seam, HT strip | X-RAY / RT, HYD, PMI | RT, UT, HYD, PMI, Ferrite check |
| Intl. Equiv. | EN 10217-1/2 / DIN 1626, BS 3601 | EN 10217-7 / DIN 17457 | EN 10217-7 |
Longitudinal Submerged Arc Welded (LSAW) and Spiral (SSAW) pipes for large-diameter, high-pressure transmission and structural applications.
| Parameter | LSAW | SSAW / HSAW |
|---|---|---|
| Material Std. | API 5L, ASTM A671 / A672 / A691 | API 5L, ASTM A252 |
| Grades | X42 / X52 / X60 / X65 / X70 / Gr.B | X42 / X52 / X60 / X65 / X70 |
| OD Range | 406.4 mm – 1524 mm (16″–60″) | 219 mm – 3048 mm (8″–120″) |
| Wall Thickness | 6.4 mm – 50.8 mm | 4.5 mm – 25.4 mm |
| Length | 6 m – 12.2 m | 6 m – 18 m |
| PSL | PSL1 / PSL2 | PSL1 / PSL2 |
| NDT | UT, X-RAY (weld & bevel), HYD, MPI | UT, HYD, X-RAY weld inspection |
| Coating Options | FBE / 3LPE / 3LPP / Coal Tar | FBE / 3LPE / 3LPP |
| Intl. Equiv. | EN 10208-2 / DIN 1628 / BS 4515 | EN 10208-1 / EN 10219 |
API 5L Line Pipe for onshore/offshore transmission of oil, gas, and water. Available in PSL1 and PSL2 with full chemical & mechanical traceability.
| Grade | SMYS (MPa) | SMTS (MPa) | Delivery Condition | PSL Level | Common Use |
|---|---|---|---|---|---|
| Gr.B | 245 | 415 | AR / N | PSL1 / PSL2 | Low pressure pipelines |
| X42 | 290 | 415 | AR / N | PSL1 / PSL2 | Gas distribution |
| X52 | 360 | 460 | N / TMCP | PSL1 / PSL2 | Oil & gas gathering |
| X60 | 415 | 520 | N / TMCP / QT | PSL1 / PSL2 | Transmission lines |
| X65 | 450 | 535 | TMCP / QT | PSL2 | High-pressure gas lines |
| X70 | 485 | 570 | TMCP / QT | PSL2 | Long-distance transmission |
| X80 | 555 | 625 | TMCP | PSL2 | Ultra-high pressure lines |
AR = As-Rolled | N = Normalized | TMCP = Thermo-Mechanically Controlled Process | QT = Quenched & Tempered | SMYS = Specified Min. Yield Strength | SMTS = Specified Min. Tensile Strength
Fittings — Full Range
Butt weld, socket weld, and threaded fittings in all four MOCs. Manufactured to ASME B16.9, B16.11, MSS SP-43, MSS SP-95, DIN, and EN standards.
Available in 45°, 90°, and 180° (return bend) configurations in Long Radius (LR) and Short Radius (SR) patterns.
- Types45°LR / 90°LR / 90°SR / 180°LR / 180°SR
- Size RangeNB ½″ – 48″ (BW), ½″ – 4″ (SW/THD)
- Wall ThicknessSCH 10S to XXS / Std / XS
- MOCCS · SS 304/316 · Duplex 2205/2507 · CuNi
- Radius (LR)R = 1.5D
- Radius (SR)R = 1.0D
- CS Material Std.ASTM A234 WPB / WPHY 42–70
- SS Material Std.ASTM A403 WP304/316/321/347
- Duplex Material Std.ASTM A815 WPS31803 / WPS32750
Concentric and eccentric reducers for connecting pipes of different diameters. Eccentric used where liquid drainage or pigging is required.
- TypesConcentric (CON) / Eccentric (ECC)
- Size RangeNB ¾″ × ½″ to 48″ × 36″
- Wall ThicknessSCH 10S – XXS (both ends specified)
- LengthPer ASME B16.9 Table (H dimension)
- CS Material Std.ASTM A234 WPB / WPHY
- SS Material Std.ASTM A403 WP304/L, 316/L, 321
- Duplex Material Std.ASTM A815 WPS31803 / WPS32750
Equal and reducing tees for flow branching in piping systems. Reinforced tee (Weldolet, Sweepolet) available for large bore branching.
- TypesEqual Tee / Reducing Tee / Lateral Tee (45°)
- Size Range (BW)NB ½″ – 48″
- Size Range (SW/THD)NB ½″ – 4″
- Pressure Class (SW)3000# / 6000# / 9000#
- CS Material Std.ASTM A234 WPB / WPHY, A105
- SS Material Std.ASTM A403 WP304/316/321/347
- Duplex Material Std.ASTM A815 UNS S31803 / S32750
Full couplings, half couplings, and reducing couplings for threaded and socket weld connections. Available in forged and cast.
- TypesFull / Half / Reducing / Hex / Pipe Coupling
- ConnectionSocket Weld (SW) / Threaded (NPT, BSPT, BSPP)
- Size RangeNB ¼″ – 4″
- Pressure Class2000# / 3000# / 6000# / 9000#
- CS Material Std.ASTM A105 / A350 LF2
- SS Material Std.ASTM A182 F304/316/321/347
- Duplex Material Std.ASTM A182 F51 / F53 / F55
Used to close the end of a pipe. Available butt weld, socket weld, and threaded. Flat caps also available for low-pressure service.
- TypesButt Weld Cap / SW Cap / THD Cap / Flat Cap
- Size Range (BW)NB ½″ – 48″
- Size Range (SW/THD)NB ½″ – 4″
- CS Material Std.ASTM A234 WPB
- SS Material Std.ASTM A403 WP304/316/321
- Duplex Material Std.ASTM A815 WPS31803 / WPS32750
Four-outlet fitting providing flow distribution in two perpendicular directions. Equal and reducing crosses available.
- TypesEqual Cross / Reducing Cross
- ConnectionButt Weld / Socket Weld / Threaded
- Size RangeNB ½″ – 24″ (BW), ½″ – 4″ (SW/THD)
- Pressure Class (SW/THD)3000# / 6000#
- CS Material Std.ASTM A234 WPB / A105
- SS Material Std.ASTM A403 / A182
Three-piece fitting enabling easy pipe disconnection without rotating. Available in threaded (NPT/BSPT) and socket weld types with flat, convex, or ground joint seats.
- Seat TypesFlat Face / Convex / Ground Joint (Male-Female)
- ConnectionThreaded (NPT / BSPT) / Socket Weld
- Size RangeNB ¼″ – 4″
- Pressure Class2000# / 3000# / 6000#
- CS Material Std.ASTM A105 / A350 LF2
- SS Material Std.ASTM A182 F304/316/321
Used with lap joint flanges to create a rotatable, cost-effective joint. Particularly useful for dissimilar material flanging.
- TypesType A (long pattern) / Type B (short pattern)
- Size RangeNB ½″ – 24″
- Wall ThicknessSCH 10S – XXS
- CS Material Std.ASTM A234 WPB
- SS Material Std.ASTM A403 WP304/316 (MSS SP-43 for thin wall)
Flanges — All Types
Full range of flange types from NB ½″ to 60″ in Class 150 to Class 2500, per ASME B16.5, B16.47, and equivalent international standards.
Pressure Class Reference — ASME B16.5
| Class | Max. Pressure (CWP) | Temp Range | Typical Use |
|---|---|---|---|
| Class 150 | 19.6 bar (285 PSI) | -29°C to +538°C | Low pressure water, gas lines |
| Class 300 | 51.1 bar (740 PSI) | -29°C to +538°C | Moderate pressure services |
| Class 600 | 102 bar (1480 PSI) | -29°C to +538°C | High-pressure oil & gas |
| Class 900 | 153 bar (2220 PSI) | -29°C to +538°C | Refineries, petrochemical |
| Class 1500 | 255 bar (3705 PSI) | -29°C to +538°C | HP steam, chemical plants |
| Class 2500 | 425 bar (6170 PSI) | -29°C to +538°C | Extreme HP service, wellhead |
CWP values shown for Group 1.1 (Carbon Steel) at ambient temperature. Actual ratings vary by material group and temperature — refer to ASME B16.5 / B16.47 Tables.
Long tapered hub welded to pipe. Strongest flange type — preferred for high-pressure, high-temp, and cyclic/dynamic service. Hub transfers stress from flange to pipe.
- Size RangeNB ½″ – 60″
- Pressure Class150# – 2500# (B16.5 up to 24″), Series A/B (B16.47 26″–60″)
- BoreMatches pipe ID per schedule
Slides over pipe OD and is fillet welded inside and outside. Lower cost than WN; suitable for lower pressure/temperature, non-cyclic service.
- Size RangeNB ½″ – 24″
- Pressure Class150# – 2500#
- Fatigue Life≈1/3 of Weld Neck
Solid disc used to close the end of a piping system. Can be used as an inspection port when fitted with an inspection plug or nozzle.
- Size RangeNB ½″ – 60″
- Pressure Class150# – 2500#
- NoteHighest bending stresses of all flange types
Pipe inserted into socket and fillet welded. Used for small-bore high-pressure lines. Not recommended for corrosive, crevice-sensitive, or severe cyclic service.
- Size RangeNB ½″ – 3″
- Pressure Class150# – 2500#
- Gap1.6 mm (1/16″) per ASME code
Internal threads mate with pipe external threads. Used where welding is not possible (e.g., hazardous area). Limited to low-temp, low-pressure service.
- Size RangeNB ¼″ – 4″
- Pressure Class150# – 2500#
- Thread TypeNPT (ASME B1.20.1) / BSPT / BSPP
Used with stub ends; the flange slides freely over pipe. Allows bolt-hole alignment rotation. Ideal for dissimilar material flanging or frequent disassembly.
- Size RangeNB ½″ – 24″
- Pressure Class150# – 2500#
- NoteFlange can be CS; stub end in exotic alloy
Specialized flange pair with tapped pressure tap holes for differential pressure flow measurement using an orifice plate. Available with jack screws.
- Size RangeNB 1″ – 24″
- Pressure Class300# – 2500#
- Tap LocationFlange taps / Corner taps / Vena Contracta
Used for positive isolation of piping. Spectacle blind has both blind and ring (spacer) sections connected by a web, enabling easy flipping for isolation or flow-through.
- TypesSpectacle Blind / Spade (Blind) / Spacer (Ring)
- Size RangeNB ½″ – 60″
- Pressure Class150# – 2500#
Extended hub acts as a nozzle neck itself. Used directly on pressure vessels, columns, and heat exchangers. Eliminates need for separate nozzle neck pipe.
- Size RangeNB ½″ – 24″
- Pressure Class150# – 2500#
- ApplicationVessel nozzles, tank connections
Combines flange with a reducer to increase or decrease pipe bore without an additional fitting. Available as Weld Neck or Slip-On type reducing flange.
- Size RangeNB ¾″×½″ – 20″×14″
- Pressure Class150# – 2500#
- NoteReduces fitting count vs. reducer + flange pair
For large bore flanges above 24″ NB where B16.5 does not apply. Series A (heavier/stronger) vs. Series B (thinner, API 605 compatible).
- Size RangeNB 26″ – 60″
- Pressure Class75# – 900# (Ser.A) / 75# – 900# (Ser.B)
- Bolt CircleLarger than B16.5; non-interchangeable between A&B
The sealing face is critical to gasket selection and service suitability. Six standard face types are used across ASME B16.5 flanges.
- RFRaised Face — most common, ≥150#
- FFFlat Face — for cast iron, non-metallic
- RTJRing Type Joint — metal ring for HP/HT
- TGTongue & Groove — chemical, food service
- MFMale & Female — pressure vessel nozzles
- LF/LMLarge/Small Tongue — specialized sealing
Flange Material Specifications
| MOC | Forged Std. | Grade / UNS | Plate Std. (for LG Blind) | Intl. Equiv. |
|---|---|---|---|---|
| Carbon Steel | ASTM A105 | — | ASTM A516 Gr.60/70 | DIN 1.0460 / EN P280GH / BS 1503 Gr.221 |
| CS (Low Temp.) | ASTM A350 | LF1 / LF2 / LF3 / LF6 | ASTM A516 Gr.60, A333 | EN P255QL / DIN 1.0566 |
| CS (High Temp.) | ASTM A182 | F11 / F22 / F5 / F9 / F91 | ASTM A387 Gr.11/22 | EN 10222-2 / DIN 13CrMo4-4 |
| Stainless Steel | ASTM A182 | F304/304L, F316/316L, F321, F347, F310, F904L | ASTM A240 | EN 10222-5 / DIN 1.4301 / 1.4401 |
| Duplex SS | ASTM A182 | F51 (S31803) / F53 (S32750) / F55 (S32760) | ASTM A240 | EN 10222-5 / 1.4462 / 1.4410 |
| Copper-Nickel | ASTM B151 / B564 | C70600 (90/10), C71500 (70/30) | ASTM B171 | EN CW352H / CW354H / DIN 2.0872 |
| Brass | ASTM B283 | C37700 / C38500 | ASTM B36 | EN CW508L / CW612N |
Export Standards
Full compliance documentation available — MTCs, Mill Test Reports, 3.1/3.2 certificates, NABL lab reports, TPIA inspection, and country-of-origin certificates.
NDT & Inspection Capabilities
| Test / Inspection | Abbreviation | Applicable Product | Standard Reference |
|---|---|---|---|
| Hydrostatic Test | HYD / HT | All pipes & fittings | ASME B31.3 / ASTM / API 5L |
| Ultrasonic Testing | UT | Seamless / welded pipes, fittings | ASTM E213 / E114, API 5L Annex E |
| Radiographic Testing | RT / X-RAY | Welds, EFW pipes, fittings | ASTM E94 / ASME V |
| Magnetic Particle Test | MT / MPI | Ferritic pipes, flanges, fittings | ASTM E709 / ASME V Art. 7 |
| Liquid Penetrant Test | PT / LPT | SS, Duplex, non-magnetic | ASTM E165 / ASME V Art. 6 |
| Positive Material ID | PMI | All alloy / SS / Duplex products | Client / project spec |
| Ferrite Content Test | Ferrite No. | Duplex / SS welds | AWS A4.2 / WRC-1992 |
| Eddy Current Test | ET / ECT | Copper, Copper-Nickel, thin-wall SS | ASTM E309 / E426 |
| Impact / Charpy Test | CVN | Low-temp CS, LF grades | ASTM A370 / EN ISO 148-1 |
| Intergranular Corrosion Test | IGC / STRAUSS | SS 304L / 316L | ASTM A262 Practice E/C |
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- Mill Test Certificates (EN 10204 3.1 / 3.2) supplied with every order
- Third-party inspection (SGS, TÜV, Bureau Veritas, Lloyd's) arranged on request
- Export packing (wooden crate, bubble wrap, end caps) for international shipments
- Full traceability — heat number, lot number, and COO documentation
- Competitive lead times: ex-stock to 8 weeks depending on MOC and size
- Compliance with REACH, RoHS, and country-specific import requirements
