Nickel Alloy Seamless Pipe
Our nickel alloy & special alloy seamless pipes are produced strictly in accordance with ASME, ASTM, BS and JIS standards, suitable for high-pressure, high-temperature and corrosive industrial fluid systems. Available in Inconel, Monel, Hastelloy and other high-performance alloys, the pipes feature high density, excellent corrosion resistance, oxidation resistance and long service life. Custom sizes, wall thicknesses and lengths are offered. Widely applied in petrochemical, chemical engineering, water treatment, oil & gas and power generation industries, providing safe and reliable conveying solutions for harsh working conditions.
ASTM & ASME Standards
Standard Specifications
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ASTM B161 | UNS N02200 / N02201 | Pure Nickel 200/201 Seamless Pipe
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ASTM B163 | Nickel 200/201, Monel 400, Inconel 600 | Condenser & Heat Exchanger Tubes
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ASTM B165 | UNS N04400 | Monel 400 Nickel-Copper Alloy Pipe
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ASTM B167 | Inconel 600 / 601 / 690 | Nickel-Chromium-Iron High-Temperature Pipe
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ASTM B407 | Incoloy 800 / 800H / 800HT | Heat-Resistant Fe-Ni-Cr Alloy Pipe
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ASTM B423 | UNS N08825 | Incoloy 825 Corrosion-Resistant Alloy Pipe
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ASTM B622 | Hastelloy C276 / C22 / B2 / B3 | High Corrosion-Resistant Nickel-Moly-Chromium Alloy
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ASTM B829 | General Requirements | Dimensional & Tolerance Standard for Nickel Alloy Pipe
Dimension Standard
ASME B36.10M | B36.19M
NPS Pipe Size Chart (OD & DN)
NPS Size
DN
Outer Diameter (OD)
1/8"
6
10.3 mm
1/4"
8
13.7 mm
3/8"
10
17.1 mm
1/2"
15
21.3 mm
3/4"
20
26.7 mm
1"
25
33.4 mm
1-1/4"
32
42.2 mm
1-1/2"
40
48.3 mm
2"
50
60.3 mm
2-1/2"
65
73.0 mm
3"
80
88.9 mm
4"
100
114.3 mm
5"
125
141.3 mm
6"
150
168.3 mm
8"
200
219.1 mm
10"
250
273.0 mm
12"
300
323.8 mm
Common Schedule Wall Thickness
Standard Schedule Series
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SCH 5S · SCH 10S · SCH 20 · SCH 30 · STD · SCH 40 · SCH 60 · SCH 80 · XS · SCH 120 · SCH 160 · XXS
Typical Wall Thickness (2" Pipe)
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SCH 10S: 2.77 mm
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SCH 40S (STD): 3.91 mm
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SCH 80S (XS): 5.54 mm
Material Grades
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Nickel 200 / 201
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Monel 400
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Inconel 600 / 601 / 625 / 690
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Incoloy 800 / 800H / 800HT / 825
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Hastelloy C276 / C22 / B2 / B3
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Alloy 20
Product Features
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High corrosion resistance in acid, alkali, salt and high-temperature environments
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Excellent creep strength and thermal stability
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Precise slot tolerance and dimensional consistency
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Full seamless forming, high pressure resistance
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Wide application in extreme industrial conditions
Application Fields
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Chemical Processing
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Oil & Gas Industry
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Power Generation Equipment
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Heat Exchangers & Condensers
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Marine & Offshore Engineering
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High-Temperature Furnace Pipes
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Pharmaceutical & Food Equipment
Size Range
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Outer Diameter: NPS 1/8" ~ 24" (10.3 mm – 610 mm)
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Wall Thickness: 0.5 mm – 30 mm
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Length: Single Random Length (SRL), Double Random Length (DRL), Custom Length
| NPS Size | DN | Outer Diameter (OD) |
|---|---|---|
| 1/8" | 6 | 10.3 mm |
| 1/4" | 8 | 13.7 mm |
| 3/8" | 10 | 17.1 mm |
| 1/2" | 15 | 21.3 mm |
| 3/4" | 20 | 26.7 mm |
| 1" | 25 | 33.4 mm |
| 1-1/4" | 32 | 42.2 mm |
| 1-1/2" | 40 | 48.3 mm |
| 2" | 50 | 60.3 mm |
| 2-1/2" | 65 | 73.0 mm |
| 3" | 80 | 88.9 mm |
| 4" | 100 | 114.3 mm |
| 5" | 125 | 141.3 mm |
| 6" | 150 | 168.3 mm |
| 8" | 200 | 219.1 mm |
| 10" | 250 | 273.0 mm |
| 12" | 300 | 323.8 mm |
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