Navigate the full pipe fittings technical reference below.
Pipe fittings connect, redirect, branch off, or reduce pipe sizes in piping systems. Kennkrupps manufactures and supplies a complete range of butt-weld, socket-weld and threaded pipe fittings for oil & gas, chemical, petrochemical and power industries.
Manufactured as per ASME B16.9, ASME B16.11 and ASME B16.28 in carbon steel, stainless steel, alloy steel, duplex and nickel alloys — with full material traceability on every shipment.
Choose the right fitting for your piping system requirements.
Standard 90° direction change in general piping.
Compact 90° turn for space-constrained installations.
Gradual direction change between pipe runs.
Reverses flow direction (U-turn) for heater coils.
Branches flow at 90° with equal branch diameter.
Branches flow to a reduced branch size directly.
Centered pipe size reduction, ideal for vertical lines.
Offset reduction for horizontal lines and pump suction.
Closes pipe ends for termination and pressure testing.
Lap joint flange assembly with stub end support.
Connects two pipes with socket-weld or threaded ends.
Disconnectable connection for maintenance and rework.
Reduce threaded connection size in compact spaces.
Short pipe length with male threads on both ends.
Branch connections directly from the main pipe.
Butt-weld fitting dimensions, schedules and materials — switch between tabs.
| NPS (Inch) | DN (mm) | OD (mm) | Wall SCH 40 (mm) | Wall SCH 80 (mm) | Center-to-End C (mm) | Weight SCH 40 (kg) |
|---|---|---|---|---|---|---|
| 1/2" | 15 | 21.3 | 2.77 | 3.73 | 38 | 0.05 |
| 3/4" | 20 | 26.7 | 2.87 | 3.91 | 38 | 0.07 |
| 1" | 25 | 33.4 | 3.38 | 4.55 | 38 | 0.12 |
| 1-1/4" | 32 | 42.2 | 3.56 | 4.85 | 48 | 0.19 |
| 1-1/2" | 40 | 48.3 | 3.68 | 5.08 | 51 | 0.25 |
| 2" | 50 | 60.3 | 3.91 | 5.54 | 64 | 0.40 |
| 2-1/2" | 65 | 73.0 | 5.16 | 7.01 | 76 | 0.75 |
| 3" | 80 | 88.9 | 5.49 | 7.62 | 86 | 1.05 |
| 4" | 100 | 114.3 | 6.02 | 8.56 | 105 | 1.75 |
| 5" | 125 | 141.3 | 6.55 | 9.53 | 130 | 2.80 |
| 6" | 150 | 168.3 | 7.11 | 10.97 | 152 | 4.10 |
| 8" | 200 | 219.1 | 8.18 | 12.70 | 203 | 7.25 |
| 10" | 250 | 273.0 | 9.27 | 15.09 | 254 | 11.80 |
| 12" | 300 | 323.8 | 9.53 | 17.48 | 305 | 16.50 |
| 14" | 350 | 355.6 | 9.53 | 19.05 | 343 | 19.80 |
| 16" | 400 | 406.4 | 9.53 | 21.44 | 381 | 25.50 |
| 18" | 450 | 457.0 | 9.53 | 23.83 | 432 | 32.20 |
| 20" | 500 | 508.0 | 9.53 | 26.19 | 483 | 39.80 |
| 24" | 600 | 610.0 | 9.53 | 30.96 | 575 | 58.50 |
| NPS (Inch) | DN (mm) | OD (mm) | Wall SCH 40 (mm) | Run Length M (mm) | Branch Length N (mm) | Weight SCH 40 (kg) |
|---|---|---|---|---|---|---|
| 1/2" | 15 | 21.3 | 2.77 | 64 | 64 | 0.10 |
| 3/4" | 20 | 26.7 | 2.87 | 70 | 70 | 0.15 |
| 1" | 25 | 33.4 | 3.38 | 76 | 76 | 0.25 |
| 1-1/4" | 32 | 42.2 | 3.56 | 86 | 86 | 0.40 |
| 1-1/2" | 40 | 48.3 | 3.68 | 89 | 89 | 0.55 |
| 2" | 50 | 60.3 | 3.91 | 102 | 102 | 0.90 |
| 2-1/2" | 65 | 73.0 | 5.16 | 121 | 121 | 1.65 |
| 3" | 80 | 88.9 | 5.49 | 140 | 140 | 2.30 |
| 4" | 100 | 114.3 | 6.02 | 165 | 165 | 3.80 |
| 5" | 125 | 141.3 | 6.55 | 194 | 194 | 6.00 |
| 6" | 150 | 168.3 | 7.11 | 219 | 219 | 8.80 |
| 8" | 200 | 219.1 | 8.18 | 279 | 279 | 15.50 |
| 10" | 250 | 273.0 | 9.27 | 343 | 343 | 25.20 |
| 12" | 300 | 323.8 | 9.53 | 410 | 410 | 36.50 |
| Large End NPS | Small End NPS | Large OD (mm) | Small OD (mm) | Wall SCH 40 (mm) | Length H (mm) | Weight (kg) |
|---|---|---|---|---|---|---|
| 2" | 1-1/2" | 60.3 | 48.3 | 3.91 | 76 | 0.45 |
| 2-1/2" | 2" | 73.0 | 60.3 | 5.16 | 89 | 0.85 |
| 3" | 2-1/2" | 88.9 | 73.0 | 5.49 | 102 | 1.20 |
| 4" | 3" | 114.3 | 88.9 | 6.02 | 114 | 2.10 |
| 5" | 4" | 141.3 | 114.3 | 6.55 | 140 | 3.50 |
| 6" | 4" | 168.3 | 114.3 | 7.11 | 152 | 4.80 |
| 6" | 5" | 168.3 | 141.3 | 7.11 | 152 | 4.20 |
| 8" | 6" | 219.1 | 168.3 | 8.18 | 178 | 7.80 |
| 10" | 8" | 273.0 | 219.1 | 9.27 | 203 | 12.50 |
| 12" | 10" | 323.8 | 273.0 | 9.53 | 229 | 18.20 |
| 14" | 12" | 355.6 | 323.8 | 9.53 | 254 | 22.50 |
| 16" | 14" | 406.4 | 355.6 | 9.53 | 279 | 28.80 |
| 18" | 16" | 457.0 | 406.4 | 9.53 | 305 | 36.50 |
| 20" | 18" | 508.0 | 457.0 | 9.53 | 330 | 45.20 |
| 24" | 20" | 610.0 | 508.0 | 9.53 | 381 | 65.80 |
| NPS | SCH 5S | SCH 10 | SCH 10S | SCH 20 | SCH 40 | SCH 40S | SCH 80 | SCH 80S | SCH 160 | XXS |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" | - | 1.65 | 1.65 | - | 2.77 | 2.77 | 3.73 | 3.73 | - | 5.54 |
| 3/4" | - | 1.65 | 1.65 | - | 2.87 | 2.87 | 3.91 | 3.91 | - | 5.54 |
| 1" | - | 1.65 | 1.65 | - | 3.38 | 3.38 | 4.55 | 4.55 | - | 5.54 |
| 1-1/4" | - | 1.65 | 1.65 | - | 3.56 | 3.56 | 4.85 | 4.85 | - | 6.02 |
| 1-1/2" | - | 1.65 | 1.65 | - | 3.68 | 3.68 | 5.08 | 5.08 | - | 6.02 |
| 2" | - | 1.65 | 1.65 | - | 3.91 | 3.91 | 5.54 | 5.54 | - | 7.01 |
| 2-1/2" | - | 2.11 | 2.11 | - | 5.16 | 5.16 | 7.01 | 7.01 | - | 7.62 |
| 3" | - | 2.11 | 2.11 | - | 5.49 | 5.49 | 7.62 | 7.62 | - | 8.08 |
| 4" | - | 2.77 | 2.77 | - | 6.02 | 6.02 | 8.56 | 8.56 | - | 9.53 |
| 5" | 2.77 | 2.77 | 2.77 | - | 6.55 | 6.55 | 9.53 | 9.53 | - | 11.13 |
| 6" | 2.77 | 2.77 | 2.77 | - | 7.11 | 7.11 | 10.97 | 10.97 | - | 12.70 |
| 8" | 2.77 | 3.05 | 3.05 | - | 8.18 | 8.18 | 12.70 | 12.70 | - | 15.09 |
| 10" | 2.77 | 3.05 | 3.05 | - | 9.27 | 9.27 | 15.09 | 15.09 | - | 18.26 |
| 12" | 3.05 | 3.05 | 3.05 | - | 9.53 | 9.53 | 17.48 | 17.48 | - | 20.62 |
| Material | Specification | Applications | Temperature Range |
|---|---|---|---|
| Carbon Steel | ASTM A234 WPB, WPC | Oil & gas, water, steam, general service | -29°C to 425°C |
| Stainless Steel 304 | ASTM A403 WP304 | Chemical, food, general corrosion | -196°C to 800°C |
| Stainless Steel 304L | ASTM A403 WP304L | Welded assemblies, chemical | -196°C to 800°C |
| Stainless Steel 316 | ASTM A403 WP316 | Marine, chemical, high corrosion | -196°C to 800°C |
| Stainless Steel 316L | ASTM A403 WP316L | Welded, high corrosion, pharma | -196°C to 800°C |
| Stainless Steel 310 | ASTM A403 WP310 | High-temperature furnace | -196°C to 1100°C |
| Stainless Steel 321 | ASTM A403 WP321 | Stabilized, welded | -196°C to 800°C |
| Stainless Steel 347 | ASTM A403 WP347 | Stabilized, high-temp | -196°C to 800°C |
| Duplex F51 | ASTM A815 S31803 | Offshore, seawater | -50°C to 300°C |
| Super Duplex F53 | ASTM A815 S32750 | High-pressure seawater | -50°C to 300°C |
| Alloy Steel WP11 | ASTM A234 WP11 | Power plants | -29°C to 550°C |
| Alloy Steel WP22 | ASTM A234 WP22 | Refineries | -29°C to 550°C |
| Alloy Steel WP91 | ASTM A234 WP91 | Supercritical boilers | -29°C to 600°C |
| Nickel Alloy 625 | ASTM B366 N06625 | Aerospace, extreme | -196°C to 1000°C |
| Hastelloy C276 | ASTM B366 N10276 | Severe corrosion | -196°C to 450°C |
| Monel 400 | ASTM B366 N04400 | Marine, chemical | -196°C to 450°C |
Oil refineries, petrochemical plants, natural gas transmission and power generation (thermal, nuclear, combined cycle).
Chemical and pharmaceutical processing, water and wastewater treatment, food and beverage processing.
Pulp and paper, HVAC, marine and offshore platforms, mining and mineral processing.
Certified manufacturing management system guaranteeing process control and traceability.
Pressure Equipment Directive 2014/68/EU and Indian Boiler Regulations approved manufacturing.
Mill Test Certificates EN 10204 3.1/3.2 with every shipment. TPI available as required.
Positive Material Identification and Ultrasonic Testing available on demand for critical service.
Sour service materials available per NACE MR0175 / MR0103 for oil & gas applications.
Radiographic testing on demand and every fitting dimensionally verified before dispatch.
All types from ½" to 48" NB.
Carbon steel, stainless steel, alloy steel, duplex, nickel alloys.
SCH 10S to SCH XXS, custom wall thickness.
100% inspection, MTC with every shipment.
Ready stock for common sizes and schedules.
Made to drawing and specifications.
Direct from manufacturer.
Expert guidance on selection and specifications.
Our team can help with custom specifications, schedules, bulk orders and technical consultation.