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Chemical Composition

ASTM B444 Inconel 625 Pipes are high-performance nickel-chromium-molybdenum alloy pipes manufactured for exceptional corrosion resistance, oxidation resistance, and high-temperature strength. Available as Inconel 625 seamless pipes, Alloy 625 welded pipes, and UNS N06625 Grade 1 annealed pipes, they are widely used in offshore, marine, chemical processing, aerospace, power generation, and oil & gas industries where aggressive environments demand long service life and reliable performance.

Detailed Information

ASTM B444 Inconel 625 Pipes Supplier, Manufacturer & Exporter

We are a trusted ASTM B444 Inconel 625 pipe supplier, delivering premium-quality nickel alloy piping solutions to industries worldwide. Our product range includes Inconel 625 seamless pipe manufacturer solutions, Alloy 625 welded pipe, Inconel 625 cold-worked seamless pipe, and UNS N06625 Grade 1 annealed pipe manufactured according to international quality standards.

ASTM B444 covers seamless and cold-worked nickel alloy pipes intended for high-temperature and corrosive service. Manufactured using advanced production techniques, these pipes provide outstanding mechanical strength, resistance to chloride-induced corrosion, and excellent weldability.

Every pipe undergoes strict dimensional inspections, hydrostatic testing, PMI testing, and quality verification before dispatch to ensure dependable performance in demanding industrial environments.

What is ASTM B444 Inconel 625 Pipe?

ASTM B444 specifies seamless nickel-chromium-molybdenum alloy pipes, including Alloy 625, for use in highly corrosive and elevated-temperature environments. Alloy 625 contains significant amounts of chromium, molybdenum, and niobium, providing superior resistance against pitting, crevice corrosion, stress corrosion cracking, oxidation, and seawater corrosion.

Compared to conventional stainless steel pipes, ASTM B444 Alloy 625 pipes offer greater durability, longer service life, and outstanding structural stability under extreme operating conditions.

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New York City, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Antonio, San Diego, Dallas, San Jose, Austin, Jacksonville, Fort Worth, Columbus, Charlotte, San Francisco, Indianapolis, Seattle, Denver, Washington, Boston, El Paso, Nashville, Detroit, Oklahoma City, Portland, Las Vegas, Memphis, Louisville, Baltimore, Milwaukee, Albuquerque, Tucson, Fresno, Mesa, Sacramento, Atlanta, Kansas City, Colorado Springs, Omaha, Raleigh, Miami, Long Beach, Virginia Beach, Oakland, Minneapolis, Tulsa, Tampa, Arlington, New Orleans, Wichita, Bakersfield, Cleveland, Aurora, Anaheim, Honolulu, Santa Ana, Riverside, Corpus Christi, Lexington, Henderson, Stockton, Saint Paul, Cincinnati, St. Louis, Pittsburgh, Greensboro, Lincoln, Anchorage, Plano, Orlando, Irvine, Newark, Durham, Chula Vista, Toledo, Fort Wayne, St. Petersburg, Laredo, Jersey City, Chandler, Madison, Lubbock, Scottsdale, Reno, Buffalo, Gilbert, Glendale, North Las Vegas, Winston-Salem, Chesapeake, Norfolk, Fremont, Garland, Irving, Hialeah, Richmond, Boise, Spokane, Baton Rouge, Tacoma, San Bernardino, Modesto, Fontana, Des Moines, Moreno Valley, Santa Clarita, Fayetteville, Birmingham, Oxnard, Rochester, Port St. Lucie, Grand Rapids, Huntsville, Salt Lake City, Frisco, Yonkers, Amarillo, Glendale, Huntington Beach, McKinney, Montgomery, Augusta, Aurora, Akron, Little Rock, Tempe, Columbus, Overland Park, Grand Prairie, Tallahassee, Cape Coral, Mobile, Knoxville, Shreveport, Worcester, Ontario, Vancouver, Sioux Falls, Chattanooga, Brownsville, Fort Lauderdale, Providence, Newport News, Rancho Cucamonga, Santa Rosa, Peoria, Oceanside, Elk Grove, Salem, Pembroke Pines, Eugene, Garden Grove, Cary, Fort Collins, Corona, Springfield, Jackson, Alexandria, Hayward, Clarksville, Lakewood, Lancaster, Salinas, Palmdale, Hollywood, Springfield, Macon, Kansas City, Sunnyvale, Pomona, Killeen, Escondido, Pasadena, Naperville, Bellevue, Joliet, Murfreesboro, Midland, Rockford, Paterson, Savannah, Bridgeport, Torrance, McAllen, Syracuse, Surprise, Denton, Roseville, Thornton, Miramar, Pasadena, Mesquite, Olathe, Dayton, Carrollton, Waco, Orange, Fullerton, Charleston, West Valley City, Visalia, Hampton, Gainesville, Warren, Coral Springs, Cedar Rapids, Round Rock, Sterling Heights, Kent, Columbia, Santa Clara, New Haven, Stamford, Concord, Elizabeth, Athens, Thousand Oaks, Lafayette, Simi Valley, Topeka, Norman, Fargo, Wilmington, Abilene, Odessa, Columbia, Pearland, Victorville, Hartford, Vallejo, Allentown, Berkeley, Richardson, Arvada, Ann Arbor, Rochester, Cambridge, Sugar Land, Lansing, Evansville, College Station, Fairfield, Clearwater, Beaumont, Independence, Provo, West Jordan, Murrieta, Palm Bay, El Monte, Carlsbad, North Charleston, Temecula, Clovis, Springfield, Meridian, Westminster, Costa Mesa, High Point, Manchester, Pueblo, Lakeland, Pompano Beach, West Palm Beach, Antioch, Everett, Downey, Lowell, Centennial, Elgin, Richmond, Peoria, Broken Arrow, Miami Gardens, Billings, Jurupa Valley, Sandy Springs, Gresham, Lewisville, Hillsboro, Ventura, Greeley, Inglewood, Waterbury, League City, Santa Maria, Tyler, Davie, Lakewood, Daly City, Boulder, Allen, West Covina, Sparks, Wichita Falls, Green Bay, San Mateo, Norwalk, Rialto, Las Cruces, Chico, El Cajon, Burbank, South Bend, Renton, Vista, Davenport, Edinburg, Tuscaloosa, Carmel, Spokane Valley, San Angelo, Vacaville, Clinton, Bend, Woodbridge.

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ASTM B444 Inconel 625 Welded Pipe Specifications

Specification	Details
Standard	ASTM B444 / ASME SB444
Material Grade	Inconel Alloy 625
UNS Number	UNS N06625
Werkstoff No.	W.Nr. 2.4856 equivalent pipe
Manufacturing Type	Seamless, Welded, Cold Worked
Condition	Annealed, Cold Worked
Size Range	½” NB to 24″ NB
Wall Thickness	SCH 5 to SCH XXS
Length	Random, Double Random & Cut Length
Pipe Ends	Plain End, Bevel End, Threaded

Chemical Composition of Inconel 625 Pipe

C0

Ni

Fe

Mn

C

S

Si

Cr2

Mo

Al

Ti

P

Nb + Ta

1.0 max

58.0 min

5.0 max

0.50 max

0.10 max

0.015 max

0.50 max

20.0-23.0

8.0-10.0

0.40 max

0.015 max

3.15–4.15

Mechanical Properties of Inconel 625 Fabricated Pipe

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.4 g/cm3	1350 °C (2460 °F)	Psi – 1,35,000 , MPa – 930	Psi – 75,000 , MPa – 517	42.5 %

Equivalent Grades of Inconel 625 Welded Pipe

Grade	UNS No	Old British		Euronorm		GOST	Japanese JIS
		BS	En	No	AFNOR
Inconel 625	N06625	NA 21	NiCr22Mo9Nb	2.4856	NC22DNB4M	ХН75МБТЮ	NCF 625

Types of ASTM B444 Inconel 625 Welded Pipe

Inconel 625 ERW Pipes	ASTM B444 625 Inconel Alloy Welded Pipes
Inconel Alloy 625 Welded Pipes	ASTM B444 Inconel 625 ERW Pipes
ASTM B444 Inconel 625 High-Temperature Pipes	Alloy 625 Welded Pipes
High Nickel Alloy 625 Welded Pipes	Welded Inconel Alloy 625 Pipe
B444 Inconel 625 Corrosion Resistance Pipes	ASTM B444 Inconel 625 Welded Piping
Inconel 625 Square Welded Pipes	Inconel 625 Round Welded Pipes
Inconel 625 Rectangular Welded Pipes	ASME SB444 Inconel 625 Welded Pipes
UNS N06625 Welded Pipes	DIN 2.4856 Welded Pipes
Inconel 625 EFW Pipes	ASTM B444 625 Inconel Alloy Fabricated Pipes
Inconel Alloy 625 Fabricated Pipes	ASTM B444 Inconel 625 ERW Pipes
ASTM B444 Inconel 625 High-Temperature Pipes	Alloy 625 Fabricated Pipes
High Nickel Alloy 625 Fabricated Pipes	Fabricated Inconel Alloy 625 Pipe
B444 Inconel 625 Corrosion Resistance Pipes	ASTM B444 Inconel 625 Fabricated Piping
Inconel 625 Square Fabricated Pipes	Inconel 625 Round Fabricated Pipes
Inconel 625 Rectangular Fabricated Pipes	ASME SB444 Inconel 625 Fabricated Pipes
UNS N06625 Fabricated Pipes	DIN 2.4856 Fabricated Pipes

Outside Diameter And Wall Thickness (Mm)

Size mm	Grade	Maximum internal pressure, ksi
		100°F	200°F	300°F	400°F	500°F	600°F	700°F
1.59 x 0.36	N06625	19.21	19.21	19.02	18.83	18.54	18.15	17.77
3 x 0.5	N06625	940	940	930	921	907	888	869
6 x1	N06625	940	940	930	921	907	888	869
8×1	N06625	681	681	675	668	658	644	630
8×2	N06625	1476	1476	1462	1447	1425	1395	1366
10×1	N06625	534	534	529	524	516	505	494
12×1	N06625	440	440	435	431	424	415	407
16×1	N06625	324	324	321	318	313	307	300

Inconel 625 Pipe Weight Chart

NPS	Outside Diameter		Wall Thickness			Weight	Weight
NPS	in	mm	in	mm	Sched	kg/Mtr	Lb/ft
1/2″	0.840	21	0.109	2.769	40 STD	1.268	0.851
			0.147	3.734	80 STD	1.621	1.088
3/4″	1.050	27	0.113	2.870	40 STD	1.684	1.131
			0.154	3.912	80 STD	2.195	1.474
1″	1.315	33	0.133	3.378	40 STD	2.501	1.679
			0.179	4.547	80 STD	3.325	2.172
1 1/4″	1.660	42	0.140	3.556	40 STD	3.385	2.273
			0.191	4.851	80 STD	4.464	2.997
1 1/2″	1.900	48	0.145	3.683	40 STD	4.048	2.718
			0.200	5.080	80 STD	5.409	3.361
2″	2.375	60	0.154	3.912	40 STD	5.441	3.653
			0.218	5.537	80 STD	7.480	5.022
2 1/2″	2.875	73	0.203	5.516	40 STD	8.629	5.793
			0.276	7.010	80 STD	11.411	7.661
3″	3.500	89	0.216	5.486	40 STD	11.284	7.576
			0.300	7.620	80 STD	15.272	10.253
4″	4.500	114	0.237	6.020		16.073	10.790
			0.337	8.560		22.318	14.983
6″	6.625	168	0.188	4.775		19.252	12.924
			0.203	5.516		20.739	13.923
			0.219	5.563		22.318	14.983
			0.250	6.350		25.354	17.021
			0.280	7.112	40 STD	58.263	18.974
			0.312	7.925		31.334	21.036
			0.375	9.525		37.285	25.031
			0.432	10.973	80 XHY	42.561	28.573
			0.500	12.700		48.719	32.708
8″	8.625	219	0.188	4.775		25.233	16.940
			0.203	5.156		27.198	18.259
			0.219	5.563		29.286	19.661
			0.250	6.350	20	33.308	22.361
			0.277	7.036	30	36.786	24.696
			0.322	8.179	40	42.352	28.554
			0.375	9.525		49.216	33.041
			0.406	10.312	60	53.085	35.638
			0.500	12.700	80 XHY	64.627	43.388
10″	10.750	273	0.188	4.775		31.588	21.207
			0.219	5.563		36.689	24.631
			0.250	6.350	20	41.759	28.035
			0.307	7.798	30	51.002	34.240
			0.344	8.738		56.946	38.231
			0.365	9.271	40 STD	63.301	40.483
			0.438	11.125		71.852	48.238
			0.500	12.700	60 XHY	81.530	54.735
			0.594	15.088	80	95.969	64.429
12″	12.750	324	0.188	4.775		37.570	25.222
			0.219	5.563		43.657	29.309
			0.250	6.350		49.713	33.375
			0.281	7.137		55.739	37.420
			0.312	7.925		61.735	41.445
			0.375	9.525		73.824	49.562
			0.406	10.312		79.727	53.525
			0.500	12.700		97.438	65.415
			0.562	14.275		108.966	73.154
14″	14.000	356	0.188	4.775		41.308	27.732
			0.219	5.563		48.012	32.233
			0.250	6.350	20	54.685	36.713
			0.281	7.137		61.327	41.172
			0.312	7.925		67.939	45.611
			0.375	9.525	STD	81.281	54.568
			0.438	11.125	40	94.498	63.441
			0.500	12.700	XHY	107.381	72.090
			0.625	15.875		132.983	89.278
16”	16.000	406	0.188	4.775		47.290	21.748
			0.219	5.563		54.980	36.910
			0.250	6.350	10	62.639	42.053
			0.281	7.137		70.268	47.174
			0.312	7.925	20	77.866	52.275
			0.344	8.738		85.677	57.519
			0.375	9.525	30 STD	93.213	62.578
			0.438	11.125		108.433	72.797
			0.500	12.700	40 XHY	123.289	82.770
18″	18.000	457	0.219	5.563		61.948	41.588
			0.250	6.350		70.593	47.393
			0.281	7.137		79.208	53.176
			0.312	7.925	20	87.792	58.939
			0.375	9.525	STD	105.144	70.588
			0.438	11.125	30	122.369	82.152
			0.500	12.700	XHY	139.198	93.450
			0.562	14.275	40	155.904	104.666
			0.625	15.875		172.754	115.978
20″	20.000	508	0.250	6.350		78.547	52.733
			0.282	7.163		88.458	59.386
			0.312	7.925		97.719	65.604
			0.375	9.525	20 STD	117.075	78.598
			0.438	11.125		136.305	91.508
			0.500	12.700	30 XHY	155.106	104.130
			0.594	15.088	40	183.378	123.110
			0.625	15.875		192.640	129.328
			0.688	17.475		211.368	141.901
24″	24.000	610	0.250	6.350		94.456	63.413
			0.281	7.137		106.029	71.183
			0.312	7.925		117.573	18.932
			0.375	9.525	20 STD	140.938	64.618
			0.438	11.125		164.176	110.219
			0.500	12.700	XHY	186.923	125.490
			0.625	15.875		232.410	156.028
			0.688	17.475	40	255.148	171.293
			0.750	19.050		277.401	186.233
30″	30.000	762	0.250	6.350		118.318	79.433
			0.281	7.137		132.851	89.189
			0.312	7.925	10	147.353	98.925
			0.375	9.525	STD	176.731	118.648
			0.438	11.125		205.983	138.286
			0.500	12.700	20 XHY	234.647	157.530
			0.625	15.875	30	292.066	196.078
			0.688	17.475		320.817	215.380
			0.750	19.050		348.988	234.293
36″	36.000	914	0.250	6.350		142.180	95.453
			0.281	7.137		159.672	107.196
			0.312	7.925	10	177.133	118.918
			0.375	9.525	STD	215.525	142.678
			0.438	11.125		247.790	166.353
			0.500	12.700	20 XHY	282.372	198.570
			0.625	15.875		351.723	236.128
			0.688	17.475		386.487	259.467
			0.750	19.050		420.576	282.353
42″	42.000	1067	0.312	7.925		206.914	138.911
			0.375	9.525	STD	248.319	166.708
			0.500	12.700	XHY	33.097	221.610
			0.750	19.050		492.163	330.413
48″	48.000	1219	0.375	9.525	STD	284.112	190.738
			0.438	11.125		331.404	222.487
			0.500	12.700	XHY	377.822	253.650
			0.750	19.050		563.750	378.473
			0.875	22.225		655.969	440.383

ASTM B444 Inconel 625 Fabricated Pipe Sizes

UNS N06625 Seamless Pipes are supplied according to ANSI/ ASME B36.19.

WT = Inconel 625 pipe wall thickness

OD = Inconel 625 pipe outside diameter

ASTM B444 Inconel 625 Pipe OD mm	Pipe WT mm	in.	Sch	Kg/m
13.72	1.65	1/4	10S	0.50
13.72	2.24	1/4	40S	0.64
13.72	3.02	1/4	80S	0.81
17.15	1.65	3/8	10S	0.64
17.15	2.31	3/8	40S	0.86
17.15	3.20	3/8	80S	1.12
21.34	2.11	1/2	10S	1.02
21.34	2.77	1/2	40S	1.29
21.34	3.73	1/2	80S	1.65
26.67	2.11	3/4	10S	1.30
26.67	2.87	3/4	40S	1.71
26.67	3.91	3/4	80S	2.23
33.40	2.77	1	10S	2.13
33.40	3.38	1	40S	2.54
33.40	4.55	1	80S	3.29
33.40	6.352)	1	160	4.30
42.16	2.77	1¼	10S	2.73
42.16	3.56	1¼	40S	3.44
42.16	4.85	1¼	80S	4.53
42.16	6.352)	1¼	160	5.69
48.26	2.77	1½	10S	3.16
48.26	3.68	1½	40S	4.11
48.26	5.08	1½	80S	5.49
60.33	2.77	2	10S	3.99
60.33	3.91	2	40S	5.52
60.33	5.54	2	80S	7.60
60.33	8.742)	2	160	11.29
73.03	3.05	2½	10S	5.35
73.03	5.16	2½	40S	8.77
73.03	7.01	2½	80S	11.59
88.90	3.05	3	10S	6.56
88.90	5.49	3	40S	11.47
88.90	7.62	3	80S	15.51
88.90	11.132)	3	160	21.67
101.60	3.05	3½	10S	7.53
101.60	5.74	3½	40S	13.78
101.60	8.08	3½	80S	18.92
114.30	3.05	4	10S	8.50
114.30	6.02	4	40S	16.32
114.30	8.56	4	80S	22.67
114.30	13.492)	4	160	34.05
141.30	6.55	5	40S	22.10
141.30	9.53	5	80S	31.44
141.30	15.882)	5	160	49.87
168.28	3.4	6	10S	14.04
168.28	7.11	6	40S	28.69
168.28	10.97	6	80S	43.21
168.28	14.27	6	120	54.75
168.28	18.262)	6	160	68.59
219.08	8.18	8	40S	43.20
219.08	12.7	8	80S	65.63
219.08	18.23	8	120	91.30
219.08	23.012)	8	160	112.97

UNS N06625 Welded Pipe Schedule Chart

1/8″ IPS(.405″O. D.)	3 1/2″ IPS( 4.000″O. D.)
SCH 40, 80	SCH 10, 40, 80, 160, XXH
1/4″ IPS(.540″O. D.)	4″ IPS(4.500″O. D.)
SCH 10, 40, 80	SCH 10, 40, 80, 160, XXH
3/8″ IPS(.675″O. D.)	5″ IPS( 5.563″O. D.)
SCH 10, 40, 80	SCH 10, 40, 80, 160, XXH
1/2″ IPS(.840″O. D.)	6″ IPS(6.625″O. D.)
SCH 5, 10, 40, 80, 160, XXH	SCH 5, 10, 40, 80, 120, 160, XXH
3/4″ IPS(1.050″O. D.)	8 ” IPS(8.625″O. D.)
SCH 10, 40, 80, 160, XXH	SCH 5, 10, 40, 80, 120, 160, XXH
1″ IPS:(1.315′O. D.)	10″ IPS(10.750″O. D.)
SCH 5, 10, 40, 80, 160, XXH	SCH 10, 20, 40, 80 (.500), TRUE 80(.500)
1-1/4″ IPS(1.660″O. D.)	12″ IPS(12.750″O. D.)
SCH 10, 40, 80, 160, XXH	SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)
1-1/2″ IPS(1.900″O. D.)	14″ IPS(14.000″O. D.)
SCH 10, 40, 80, 160, XXH	SCH10 (.188), SCH40 (.375)
2″ IPS(2.375″O. D.)	16″ IPS(16.000″O. D.)
SCH 10, 40, 80, 160, XXH	SCH10(.188), SCH40(.375)
2 1/2″ IPS(2.875″O. D.)	18″ IPS (18.000″O. D.)
SCH 10, 40, 80, 160, XXH	SCH-40 (.375)
3″ IPS( 3.500″O. D.)
SCH 5, 10, 40, 80, 160, XXH

Why ASTM B444 Inconel 625 Pipes are Preferred

ASTM B444 Alloy 625 pipes are selected for critical applications because they combine exceptional corrosion resistance with impressive mechanical strength.

Key Benefits

Outstanding resistance to seawater corrosion
Excellent oxidation resistance up to elevated temperatures
Superior resistance to pitting and crevice corrosion
High fatigue strength
Excellent weldability
Good formability
Long operational service life
Performs well in sour gas environments
Excellent resistance to chloride stress corrosion cracking
Suitable for cryogenic as well as high-temperature applications

These characteristics make Alloy 625 one of the most versatile nickel alloys available for demanding industrial projects.

Applications of ASTM B444 Inconel 625 Pipes

ASTM B444 Inconel 625 Pipes are widely used in industries requiring reliable performance under severe operating conditions.

Common industries include:

Offshore oil & gas platforms
Chemical processing plants
Marine engineering
Heat exchangers
Aerospace manufacturing
Nuclear power plants
Power generation
Desalination facilities
Pollution control systems
Fertilizer plants
Pharmaceutical industries
LNG terminals
Petrochemical plants

Their resistance to highly corrosive chemicals and elevated temperatures makes them suitable for long-term industrial service.

Related Inconel Pipes Grades

Why Choose Us as Your ASTM B444 Inconel 625 Pipe Supplier?

Choosing the right supplier directly impacts project quality, delivery timelines, and long-term reliability. We focus on delivering certified products backed by technical expertise and responsive customer support.

Our Advantages

Large ready stock of ASTM B444 Inconel 625 Pipes
Experienced Inconel 625 seamless pipe manufacturer
Trusted ASTM B444 Inconel 625 pipe supplier
Reliable ASME SB444 Alloy 625 pipes exporter
Competitive pricing
Mill Test Certificates (EN 10204 3.1)
Third-party inspection available
Fast worldwide delivery
Custom sizes and schedules
Complete material traceability
Secure export packaging
Technical assistance for project selection

Our team helps customers choose the correct Alloy 625 piping solution based on pressure, temperature, corrosion environment, and industry standards.

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