Tube Fittings Manufacturer, Supplier, and Exporter Supporting Industrial Systems in Louisiana
At Mcneil Instruments, tube fittings are supplied with a clear understanding of how Louisiana’s industrial systems actually function in day-to-day operation. We work as a tube fittings manufacturer, supplier, and exporter in Louisiana, supporting industrial and instrumentation systems where precision, pressure integrity, and leak-free performance are essential to safe and stable operation.
Our tube fittings are used in fluid handling, gas transfer, and control systems installed across processing plants, fabrication facilities, utility networks, and infrastructure projects throughout the state. Louisiana’s industrial environment—particularly within energy, petrochemical, and heavy manufacturing sectors—places constant demands on tubing systems. Pressure cycling, temperature variation, vibration, and exposure to corrosive atmospheres are part of normal operation, not exceptions.
Because of this, Mcneil Instruments supplies tube fittings with careful attention to material compatibility, dimensional accuracy, and installation practicality, ensuring dependable performance under real operating conditions rather than idealized assumptions.
Applications of Tube Fittings
Tube fittings are indispensable in a wide range of industries and applications:
- Oil and Gas: Used in pipelines and refinery operations for fluid and gas transport.
- Chemical Processing: Essential for handling corrosive chemicals and maintaining system integrity.
- Pharmaceuticals: Critical for hygienic and sterile fluid handling in production facilities.
- Food and Beverage: Ensures safe and sanitary fluid transfer to meet regulatory standards.
- Automotive: Used in brake systems, fuel lines, and air conditioning systems for reliable performance.
- Aerospace: Required for hydraulic and pneumatic systems in aircraft and spacecraft.
Advantages of Tube Fittings
- Versatility: Can be used with various tubing materials and in diverse applications.
- Reliability: Provide leak-proof connections that ensure system integrity and safety.
- Ease of Installation: Many types of fittings require minimal tools and expertise for installation.
- Durable: Designed to withstand high pressures, temperatures, and environmental conditions.
- Cost-Effective: Reduce installation time and maintenance costs compared to traditional methods.
Bulkhead Union Elbow
Male Bulkhead Connector
Instrumentation Tube Fittings Distributor in Louisiana
Mcneil Instruments is a leading manufacturer and supplier of instrumentation tube fittings, offering top notch solutions across various industries. Our fittings are known for their leak-proof performance, extensive selection, and diverse material options, including Stainless Steel, Carbon, Inconel, and Incoloy instrumentation tube fittings. We cater to a wide range of needs with our high-quality products, ensuring unmatched expertise, competitive pricing, and on-time deliveries.
- Reducing Tee: These fittings connect various branches to the main line at 90-degree angles in piping systems. Mcneil Instruments, as the leading tube fittings exporters in the Istanbul, ensures sturdy and precisely dimensioned reducing tees for our customers.
- Male Bulkhead Connector: Made from high-quality stainless steel, our male bulkhead connectors support frequencies from DC to 18 GHz. They feature brass contacts and undergo rigorous testing for durability and resistance.
- Male Connector NPT: These connectors seal pressure calibration systems using NPT threads to join male and female connectors. Crafted to exact specifications by Mcneil’s expert instrumentation tube fittings manufacturers, they ensure reliable performance.
- Union Elbow: Designed to connect two tubes at a 90-degree angle, union elbows redirect flow to desired locations. We manufacture them according to client specifications, ensuring precision and convenience.
- Straight Union: Our straight unions are crafted from high-quality alloys and metals sourced from trusted vendors. They prevent surface corrosion, enhancing durability and efficiency in your machinery.
Choose Mcneil Instruments for reliable tube fittings that optimize system performance and ensure lasting quality in your operations.
Products
Why Tube Fittings Require a Higher Level of Precision
Tube fittings are often installed in systems where tolerance margins are extremely tight. In instrumentation and control networks, even a small dimensional deviation or sealing issue can affect measurement accuracy, control response, or overall process stability.
Unlike standard piping components, tube fittings must maintain precise alignment while delivering consistent sealing performance over long service periods. Geometry, surface finish, and material stability all play a critical role. At Mcneil Instruments, tube fittings are supplied with these factors treated as functional requirements—not secondary considerations.
Our focus is on fittings that seal correctly during installation and continue to perform reliably under pressure, vibration, and thermal cycling throughout their service life.
Pipe Fittings Dimension Chart
| Pipe Fittings Nominal Size | Pipe Fittings Outside Diameter Y |
Wall Thickness T (Pipe Fittings Schedule) |
45 Deg. Pipe Fittings LR Centre to Face B | 45 Deg. Pipe Fittings LR Weight |
90 Deg. Pipe Fittings LR Centre to Face A | 90 Deg. Pipe Fittings LR Weight | 90 Deg. Pipe Fittings SR Centre to Face A | 90 Deg. Pipe Fittings SR Weight | ||
| mm | in | mm | mm | Schedule | mm | kg | mm | kg | mm | kg |
| 15 | 1/2” | 21.3 | 2.78 | STD | 15.9 | 0.04 | 38.1 | 0.08 | – | – |
| 3.73 | X.S | 15.9 | 0.05 | 38.1 | 0.10 | – | – | |||
| 20 | 3/4” | 26.7 | 2.87 | STD | 11.1 | 0.04 | 28.6 | 0.08 | – | – |
| 3.91 | X.S | 11.1 | 0.05 | 28.6 | 0.11 | – | – | |||
| 25 | 1” | 33.4 | 3.38 | STD | 22.2 | 0.09 | 38.1 | 0.15 | 25.4 | 0.11 |
| 4.55 | X.S | 22.2 | 0.11 | 38.1 | 0.19 | 25.4 | 0.14 | |||
| 32 | 11/4” | 42.2 | 3.56 | STD | 25.4 | 0.14 | 47.6 | 0.28 | 31.75 | 0.18 |
| 4.85 | X.S | 25.4 | 0.2 | 47.6 | 0.39 | 31.75 | 0.24 | |||
| 40 | 11/2” | 48.3 | 3.68 | STD | 28.6 | 0.2 | 57.1 | 0.4 | 38.1 | 0.26 |
| 5.08 | X.S | 28.6 | 0.25 | 57.1 | 0.5 | 38.1 | 0.35 | |||
| 50 | 2” | 60.3 | 3.91 | STD | 34.9 | 0.36 | 76.2 | 0.72 | 50.8 | 0.5 |
| 5.54 | X.S | 34.9 | 0.5 | 76.2 | 1.0 | 50.8 | 0.68 | |||
| 65 | 21/2” | 73.0 | 5.16 | STD | 44.4 | 0.73 | 95.2 | 1.46 | 63.5 | 0.95 |
| 7.01 | X.S | 44.4 | 0.91 | 95.2 | 1.82 | 63.5 | 1.27 | |||
| 80 | 3” | 88.9 | 5.49 | STD | 50.8 | 1.1 | 114.3 | 2.18 | 76.2 | 1.45 |
| 7.62 | X.S | 50.8 | 1.45 | 114.3 | 2.86 | 76.2 | 1.95 | |||
| 100 | 4” | 114.3 | 6.02 | STD | 63.5 | 2.1 | 152.4 | 4.2 | 101.6 | 2.8 |
| 8.56 | X.S | 63.5 | 2.9 | 152.4 | 5.7 | 101.6 | 3.9 | |||
| 125 | 5” | 141.3 | 6.65 | STD | 79.4 | 3.4 | 190.0 | 6.8 | 127.0 | 4.8 |
| 9.5 | X.S | 79.4 | 5.0 | 190.0 | 10.0 | 127.0 | 6.5 | |||
| 150 | 6” | 168.3 | 7.11 | STD | 95.2 | 5.1 | 229.0 | 10.1 | 152.4 | 6.8 |
| 10.97 | X.S | 95.2 | 7.7 | 229.0 | 15.3 | 152.4 | 10.2 | |||
| 200 | 8” | 219.1 | 8.18 | STD | 127.0 | 10.2 | 305.0 | 20.4 | 203.0 | 13.6 |
| 12.7 | X.S | 127.0 | 15.5 | 305.0 | 30.9 | 203.0 | 20.9 | |||
| 250 | 10” | 273.9 | 9.27 | STD | 159.0 | 18.1 | 381.0 | 36.1 | 254.0 | 24.1 |
| 12.7 | X.S | 159.0 | 24.4 | 381.0 | 48.8 | 254.0 | 32.5 | |||
| 300 | 12” | 323.9 | 9.52 | STD | 190.0 | 26.6 | 457.0 | 53.1 | 305.0 | 35.4 |
| 12.7 | X.S | 190.0 | 35.0 | 457.0 | 70.0 | 305.0 | 46.7 | |||
| 350 | 14” | 355.6 | 9.52 | STD | 222.0 | 34.1 | 533.0 | 68.1 | 356.0 | 45.4 |
| 12.7 | X.S | 222.0 | 45.0 | 533.0 | 90.0 | 356.0 | 60.0 | |||
| 400 | 16” | 406.4 | 9.52 | STD | 254.0 | 45.0 | 610.0 | 89.3 | 406.0 | 59.5 |
| 12.7 | X.S | 254.0 | 59.0 | 610.0 | 118.0 | 406.0 | 78.7 | |||
| 450 | 18” | 457.0 | 9.52 | STD | 286.0 | 56.5 | 686.0 | 113.0 | 457.0 | 75.6 |
| 12.7 | X.S | 286.0 | 75.0 | 686.0 | 150.0 | 457.0 | 100.0 | |||
| 500 | 20” | 508.0 | 9.52 | STD | 318.0 | 85.0 | 762.0 | 140.0 | 508.0 | 93.5 |
| 12.7 | X.S | 318.0 | 112.5 | 762.0 | 186.0 | 508.0 | 124.0 | |||
| 600 | 24” | 610.00 | 9.52 | STD | 381.0 | 101.5 | 914.0 | 203.0 | 610.0 | 135.0 |
| 12.7 | X.S | 381.0 | 134.5 | 914.0 | 269.0 | 610.0 | 179.0 | |||
Tube Fittings Technical Specifications
Why Work WithMcneil Instruments
- We treat tube fittings as working components, not catalog items. Every supply decision is made with installation conditions and service life in mind.
- Our role as a manufacturer, supplier, and exporter allows us to control quality at every stage, from material selection to final dispatch.
- Specifications are reviewed carefully to avoid mismatch, rework, or on-site fitting issues.
- We keep practical stock—sizes and types that are actually used—so projects don’t slow down waiting for material.
- Quality checks focus on fit, finish, and consistency, not just paperwork.
- Pricing is kept realistic and stable, supporting long-term working relationships rather than short-term transactions.
- Communication stays direct and clear, with honest timelines and proper documentation.
- We aim to be a reliable supply partner, not just a one-time vendor.

