Alloy Pipes

Alloy pipe is a high-performance industrial piping solution designed to withstand extreme corrosion, high temperatures, and aggressive chemical environments. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd. is a trusted Alloy pipe manufacturer and supplier in Thailand, delivering high-quality pipes to global standards. Available in round, square, and custom shapes with coated or uncoated finishes. Our Alloy pipes are built for long-term durability in the most demanding industries. With a wide range of sizes, competitive pricing, and quick dispatch, we provide reliable, tailored solutions for projects of all scales.

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What is a Alloy Pipes?

A Alloy pipe is a high-performance alloy pipe made primarily from nickel, designed to resist corrosion, oxidation, and chemical damage in extreme conditions. This metal alloy contains key elements like Nickel, Molybdenum, Chromium, with traces of Iron and Tungsten, giving it strength and longevity. Grades such as Alloy C276 Pipes and C22 Pipes are tailored for specific industrial applications, including aggressive chemical environments. These pipes offer excellent tensile strength and are highly resistant to stress corrosion cracking. Common sizes include ½ inch, 1 inch, and 2 inch, and they are fully weldable, enabling strong and secure joints. Recognized by standards like ASTM B622 and UNS N10276, Alloy piping is widely used for its reliable performance. Details such as Alloy pipe schedule, Alloy pipe welding, and Alloy pipe HSN code help ensure proper specification and compliance for any project.

Advantages of Choosing Alloy Pipes for Industrial Use

Exceptional resistance to corrosion, ensuring longer lifespan and minimal maintenance in challenging environments.

Withstand high temperatures, supporting consistent performance and reducing system failures in extreme heat.

Strong mechanical properties and longevity reduce the need for frequent replacements, ensuring uninterrupted operations.

Offers unmatched resistance to a wide range of chemicals, maintaining integrity and minimizing downtime in harsh chemical environments.

High tensile strength enhances the reliability of your systems, ensuring they perform under pressure without compromising safety.

Adaptable to a variety of applications, providing flexible solutions for complex project requirements.

Why Choose Our for Alloy Pipes?

We are a leading exporter of Alloy pipes, known for offering the best quality Alloy piping at a reasonable price. As one of the prominent stockists and sellers of rectangular and alloy square pipes, we ensure timely delivery and competitive Alloy pipe prices in Thailand. Our commitment to quality and customer satisfaction makes us the preferred choice for reliable and durable pipes.

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Alloy Pipes Specifications

Alloy Pipes specifications cover schedule, outer diameter, wall thickness, length, and compliance with international standards.

Specifications	ASTM B 622 ASME SB 622
Dimensions	ASTM, ASME, and API
Size:	15″NB TO 150″NB IN
Schedule	SCH5, SCH10, SCH40, STD, SCH80, SCH160
Type	Seamless
Form	Round, Square, Rectangular, Hydraulic Etc
Length	Single Random, Double Random & Cut Length.
End	Plain End, Beveled End, Treaded

Types of Alloy Pipes Available

There are various types of Alloy pipes including round, square, rectangular, and custom-shaped options.

At Thaida, we only provide high-quality Alloy Seamless Pipes

Alloy Pipes Dimension Chart in MM, Inches

ASME SB619 Alloy Seamless Pipes are supplied according to ANSI/ ASME B36.19.

WT = Alloy pipe wall thickness

OD = Alloy pipe outside diameter

ASTM B622 Alloy 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

Alloy Pipes 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

Alloy Pipes 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

Manufacturing Process Of Alloy Pipes

The manufacturing of alloy pipes follows a five-step process, ensuring compliance with industry standards.

1. Raw Material Selection

High-quality alloy billets and strips are carefully selected for superior strength and corrosion resistance.

2. Pipes Formation

The selected raw material is formed into pipes using seamless extrusion methods, depending on the application.

3. Heat Treatment

Pipes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.

4. Cold Working & Finishing
After heat treatment, pipes are cold-worked for better surface finish, dimensional accuracy and improved strength.

5. Quality Control and Testing

Every pipe is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.

Applications of Alloy Pipes

Alloy pipes are used in the chemical processing industry for handling highly corrosive fluids and gases. These pipes are extensively installed in reactors, heat exchangers, and transfer lines where aggressive chemicals such as hydrochloric acid, sulfuric acid, and chlorine compounds are processed. Beyond chemical plants, Alloy pipes are also used in marine engineering for seawater piping systems, offshore oil platforms for sour gas handling, and in the pharmaceutical and food processing industries.

Chemical and Petrochemical Industry

Oil and Gas Industry

Pharmaceutical & Biotechnology

Power Generation & Heat Exchange

Marine & Shipbuilding

Automotive & Transportation

Water Treatment & Plumbing

Construction & Infrastructure

Aerospace & Defense

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FAQs

How are Alloy Pipes different from stainless steel or nickel pipes?

Alloy pipes are specifically designed for superior corrosion resistance in extremely harsh chemical environments, often at elevated temperatures, due to their higher content of nickel and molybdenum. Stainless steel pipes offer good general corrosion resistance but are susceptible to localized corrosion and stress corrosion cracking in aggressive acidic or chloride-rich settings where Alloy excels. Pure Nickel pipes offer excellent resistance to certain alkalis and reducing chemicals but lack the comprehensive resistance to oxidizing acids and varied corrosive agents that Alloy provides.

Can Alloy Pipes handle extreme temperature and pressure simultaneously?

Yes, alloy pipes can handle extreme temperature and pressure simultaneously. Alloy alloys, such as C-276 and X, have excellent mechanical properties and structural stability at high temperatures (up to about 1200°C for some grades) while maintaining their superior corrosion resistance and high strength. This makes them ideal for high-pressure and high-temperature chemical reactor applications.

What industries commonly use Alloy Pipes?

Alloy pipes are essential in industries that handle highly corrosive media or operate under severe conditions. Common industries include chemical processing, petrochemical and oil & gas, pharmaceutical, pollution control, aerospace and Gas Turbines.

What is Alloy used for?

Alloy is primarily used to manufacture equipment that must reliably contain or process highly corrosive chemicals under challenging conditions. This includes pressure vessels, piping systems, valves, pumps, and heat exchangers in chemical, petrochemical, and power generation plants. High-temperature grades are also used for turbine engine parts and industrial furnace parts.

How strong is Alloy?

Alloy is considered a high-strength material. While its exact strength varies by grade, common alloys like Alloy C-276 have high tensile strength (around 790 MPa or 115 ksi) and yield strength (around 355 MPa or 52 ksi). It maintains excellent mechanical strength and structural integrity at both high and low temperatures, often outperforming other materials in its ability to resist stress and cracking in corrosive settings.

What is the specification of Alloy pipe?

Alloy pipes are manufactured according to various international standards like ASTM and ASME Key specifications include ASTM B622 / ASME SB622 for seamless pipe and tube and ASTM B619 / ASME SB619 for welded pipe. They are available in common pipe sizes (NB) and schedules to meet standard industrial piping dimensions.

What is the difference between Alloy and titanium?

The major difference lies in their density and primary application focus. Titanium is known for its exceptional strength-to-weight ratio and excellent resistance to seawater and oxidizing acids (like nitric acid) due to a stable passive oxide film. It is significantly lighter (density 4.5 g/cm3).Alloy (density 8.9 g/cm3) is heavier but offers superior, broader-spectrum corrosion resistance in complex and mixed chemical environments, especially those involving both strong oxidizing and reducing acids. It performs better at very high temperatures where Titanium can become reactive.