Hastelloy Pipes Manufacturer & Supplier
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Benefits of DIN 2.4665 Pipe
- Corrosion Resistance: It resists damage from acids, chlorides, and harsh chemicals, even in highly corrosive settings.
- High Strength and Durability: These pipes maintain mechanical strength under stress and last longer in tough working conditions.
- Wide Temperature Range: They maintain their strength and structure while operating dependably in cryogenic and high-heat environments.
- Weldability and Formability: Hastelloy allows for easy welding and shaping without cracking or weakening, making fabrication simple and efficient.
Difference Between Hastelloy Pipe vs Inconel Pipes
Specification of Hastelloy Pipes

Seamless Pipe OD : ½″ NB – 12″ NB
Welded Pipe OD : ½″ NB – 24″ NB
EFW Pipe Size : 6″ NB – 24″ NB

ASTM B 622 ASME SB 622 / ASTM B 619 ASME SB 619

Seamless, ERW, Welded, Fabricated

Round, Square, Rectangular, Hydraulic Etc

Single Random, Double Random & Cut Length.

Plain End, Beveled End, Treaded

SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS

No. 2B – Mill finish / Matte finish, No. 4 – Brushed finish, No. 8 – Mirror finish, Bright Annealed – Smooth / Slightly reflective, Polished – Smooth / Enhanced corrosion resistance,Mirror – Highly reflective,
Types of Hastelloy Pipes
Manufacturing Types
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Seamless PipeWeld-free, perfect for even strength and sizing precision.
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Welded PipeWelded from flat-rolled steel, widely used where economy and large sizes are required.
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ERW PipeElectric Resistance Welded (ERW) pipes provide neat, high quality weld seams and are ideal for medium-pressure applications.
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EFW PipeElectric Fusion Welded (EFW) pipes are welded by fusion welding, usually applied in larger diameters and high-demand processes.
Pipe Forms
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Round PipeThe most common shape for fluid and gas transport.
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Square PipeUsed in architectural and structural applications requiring angular profiles.
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Rectangular PipeProvides greater strength in load-bearing regions and flat structures.
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Hydraulic PipeDesigned to provide precise dimensional control for fluid systems under pressure.
Contact us today to discuss how Hastelloy Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Hastelloy Pipes Grades We Offer
Hastelloy Pipe Dimensions
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Schedule 40 Wall Thickness | Schedule 80 Wall Thickness |
| 1/2″ | 21.34 mm | 2.77 mm | 3.73 mm |
| 3/4″ | 26.67 mm | 2.87 mm | 3.91 mm |
| 1″ | 33.40 mm | 3.38 mm | 4.55 mm |
| 1 1/4″ | 42.16 mm | 3.56 mm | 4.85 mm |
| 1 1/2″ | 48.26 mm | 3.68 mm | 5.08 mm |
| 2″ | 60.33 mm | 3.91 mm | 5.54 mm |
| 2 1/2″ | 73.03 mm | 5.16 mm | 7.01 mm |
| 3″ | 88.90 mm | 5.49 mm | 7.62 mm |
| 4″ | 114.30 mm | 6.02 mm | 8.56 mm |
| 6″ | 168.28 mm | 7.11 mm | 10.97 mm |
| 8″ | 219.08 mm | 8.18 mm | 12.70 mm |
| 10″ | 273.05 mm | 9.27 mm | 12.70 mm |
| 12″ | 323.85 mm | 9.53 mm | 12.70 mm |
Hastelloy Pipe Thickness Chart
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Schedule 5S (mm) | Schedule 10S (mm) | Schedule 40S (mm) | Schedule 80S (mm) |
| 1/2″ | 21.34 mm | 1.65 | 2.11 | 2.77 | 3.73 |
| 3/4″ | 26.67 mm | 1.65 | 2.11 | 2.87 | 3.91 |
| 1″ | 33.40 mm | 1.65 | 2.77 | 3.38 | 4.55 |
| 1 1/2″ | 48.26 mm | 1.65 | 2.77 | 3.68 | 5.08 |
| 2″ | 60.33 mm | 1.65 | 2.77 | 3.91 | 5.54 |
| 3″ | 88.90 mm | 1.65 | 3.05 | 5.49 | 7.62 |
| 4″ | 114.30 mm | 1.65 | 3.05 | 6.02 | 8.56 |
| 6″ | 168.28 mm | 2.11 | 3.40 | 7.11 | 10.97 |
| 8″ | 219.08 mm | 2.11 | 3.76 | 8.18 | 12.70 |
| 10″ | 273.05 mm | 2.77 | 4.19 | 9.27 | 12.70 |
| 12″ | 323.85 mm | 2.77 | 4.57 | 9.53 | 12.70 |
Manufacturing Process of Hastelloy Pipes
Round Bar

Analytic

Cut to Length

Centering

Heating

Perforation

Inspection of Size

Pickling

Inspection of Surface

Lubricating

Cold Drawing (Cold Rolling)

Degreasing

Annealing

Straightening

Cut

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping
Applications of Hastelloy Pipes
Why choose Midland Alloys Inc.?
Frequently Asked Questions About Hastelloy Pipes
Yes, because of their exceptional resistance to pitting and crevice corrosion, Hastelloy pipes function well in marine environments particularly in seawater systems with a high chloride concentration.
The choice of grade is affected by mechanical load, temperature range and chemical exposure. B2 is appropriate for strong reducing conditions although C276 is frequently chosen for broad corrosion resistance.
Hastelloy pipes are available in various schedules (SCH10 to SCH160) and customized thicknesses depending on application pressure and flow requirements.
Yes, due to their corrosion resistance and thermal stability, Hastelloy pipes are widely used in heat exchangers handling aggressive chemicals.
While Hastelloy is weldable, it requires controlled environments and proper filler metals to maintain corrosion resistance after welding.



