Stainless Steel 321H Pipes

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Stainless Steel 321H Pipes Manufacturer, Supplier and Exporter in Naypyidaw, Myanmar

Tun Pipes, located in Naypyidaw, Myanmar, stands out as a top manufacturer and supplier of premium stainless steel products, with a focus on seamless tubing. They pride themselves on their dedication to precision, durability, and ensuring customer satisfaction. Tun Pipes caters to a variety of industries that need dependable and corrosion-resistant piping solutions. One of their standout products is the Stainless Steel 321/321H seamless tubing, which is renowned for its outstanding performance in high-temperature and challenging environments. By utilizing cutting-edge manufacturing techniques and rigorous quality control, Tun Pipes guarantees that every tube meets international standards, making it a go-to choice for industrial, chemical, and engineering applications throughout Myanmar and Southeast Asia.

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The Stainless Steel 321/321H seamless tubing is an austenitic chromium-nickel alloy that’s stabilized with titanium, which boosts its resistance to intergranular corrosion. It typically contains 17–19% chromium, 9–12% nickel, and titanium to enhance stability at high temperatures. This tubing showcases impressive mechanical properties, with tensile strength ranging from 515–750 MPa and yield strength between 205–275 MPa, depending on the grade and heat treatment. Its elongation is usually 40% or more, providing flexibility without sacrificing strength. The 321H variant, with its higher carbon content, offers enhanced creep resistance, making both grades perfect for extreme temperature and pressure situations.

Stainless Steel 321H Pipes Specification

Pipe Standard	ASTM A312 ASME SA312 / ASTM A358 ASME SA358
Pipe Dimension	ANSI/ASME B36.19M, ANSI/ASME B36.10M
Pipe Sizes	1 / 2″ NB – 24″ NB
Pipe Outside Diameter	6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Steel Pipe Manufacturing Process	Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded
Stainless Steel Pipe Shapes	Hydraulic, Round, Rectangle, Square, Hex, Honed
Stainless Steel Pipe Schedule	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Pipe Ends	Half Hard, Soft, Hard, Quarter Hard, Spring Hard
Delivery Condition	Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Outside Finish	2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Value Added Services	Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing

Stainless Steel 321H Pipes Chemical Composition

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	4(C+N) – 0.70 max

SS 321H Pipes Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1457 °C (2650 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

If You Are Looking To Buy High Quality

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

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Why Choose Stainless Steel 321H Pipes from Tun Pipes and Tubes?

Choosing Stainless Steel 321H Pipes from Tun Pipes and Tubes offers corrosion resistance and excellent durability, ideal for harsh environments. Their pipes are precisely engineered for durability and reliability, conforming to stringent industry standards. Tun offers solutions tailored to suit specific business requirements, backed by exceptional customer service. Furthermore, their commitment to quality ensures longevity and performance, making them a reliable choice for a variety of applications. Trust Tun’s expertise in providing quality stainless steel for your needs.

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Largest Stainless Steel 321H Pipes Supplier in Naypyidaw, Myanmar

Tun Pipes and Tubes, one of the largest suppliers of Stainless Steel 321H Pipes in Naypyidaw, Myanmar, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.

Stainless Steel 321H Pipes Sizes in MM

Designation of Diameter		O/D	Nominal Wall Thickness
Designation of Diameter		DIA	SCH.5S		SCH.5		SCH 10S		SCH.10		SCH.20S		SCH.30		SCH.40S		SCH.40		SCH 60
(A)	(B)	Meter MM	Wall Thk	Weight Kg/Mtr	Wall Thk	Weight Kg/Mtr	Wall Thk	Weight Kg/Mtr	Wall Thk	Weight Kg/Mtr	Wall Thk	Weight Kg/Mtr	Wall Thk	Weight Kg/Mtr	Wall Thk	Weight Kg/Mtr	Wall Thk	Weight Kg/Mtr	Wall Thk	Weight Kg/Mtr
6	1/8	10.3	1	0.23			1.2	0.27			1.5	0.33			1.73	0.37
8	1/4	13.7	1.2	0.37			1.65	0.49			2	0.58			2.24	0.64
10	3/8	17.2	1.2	0.47			1.65	0.63			2	0.74			2.31	0.87
15	1/2	21.3	1.65	0.01	1.65	0.81	2.11	1.02	2.11	1.02	2.5	1.15			2.77	1.29
20	3/4	26.7	1.65	1.03	1.65	1.03	2.11	1.3	2.11	1.3	2.5	1.49			2.87	1.71
25	1	33.4	1.65	1.31	1.65	1.31	2.77	2.13	2.77	2.13	3	2.24			3.38	2.54
32	11/4	24.2	1.65	1.67	1.65	1.67	2.77	2.73	2.77	2.73	3	2.9			3.56	3.44
40	11/2	48.3	1.65	1.93	1.65	1.93	2.77	3.16	2.77	3.16	3	3.35			3.68	4.11
50	2	60.3	1.65	1.93	1.65	2.42	2.77	3.99	2.77	3.99	3.5	4.9			3.91	5.52
65	21/2	73	2.11	3.75	2.11	3.75	3.05	5.34	3.05	5.34	3.5	6			5.16	8.77
80	3	88.9	2.11	4.59	2.11	4.59	3.05	6.56	3.05	6.56	4	8.37			5.49	11.47
90	31/2	101.6	2.11	5.25	2.11	5.25	3.05	7.53	3.05	7.53	4	9.62			5.74	13.78
100	4	114.3	2.11	5.93	2.11	5.93	3.05	8.5	3.05	8.5	4.5	12.18			6.02	6.32
125	5	141.3	2.77	9.61	2.77	9.61	3.4	11.74	3.43	11.74	5	16.8			6.55	2210
150	6	168.3	2.77	11.47	2.77	11.47	3.4	14.04	3.43	14.04	5.5	22.08			7.11	28.69
200	8	219.1	2.77	15	2.77	15	3.76	20.77	3.76	20.27	6.35	33.82	7.04	37.38	8.18	43.2			10.81	53.9
250	10	273.1	3.4	22.95	3.4	22.95	4.19	28.2	4.19	28.2	6.35	42.41	7.8	51.81	9.27	61.22			12.2	82.8
300	12	323.9	3.96	31.72	4.19	33.6	4.57	36.54	4.57	36.54	6.35	50.48	8.38	66.2	9.53	75.01	10.31	80.94	14.27	110.62
350	14	355.6	3.96	34.86			4.78	41.99	6.35	55.53	7.92	68.95	9.53	82.58	9.53	82.58	11.13	96	15.06	128.42
400	16	406.4	4.19	42.2			4.78	48.07	6.35	63.61	7.92	79.03	9.53	94.7	9.53	94.7	12.7	125.2	16.66	162.59
450	18	457.2	4.19	47.46			4.78	54.15	6.35	71.69	7.92	89.1	11.13	124.32	9.53	106.83	14.27	158.27	19.05	209
500	2C	508	4.78	60.23			5.54	69.7	6.35	79.76	9.53	118.93	12.7	157.51	9.53	118.9	15.06	185.89	2062	251.65
550	22	558.8	4.78	65.95			5.54	76.75	6.35	87.84	9.53	131.07	12.7	173.66	9.53	131.07	15.88	216.04	22.23	298.55
600	24	609.6	5.54	83.8			6.35	95.92	6.35	95.92	9.53	143.2	14.27	212.72	9.53	143.2	17.45	258.74	24.59	360.21
650	26	660.4							7.92	129.4	12.7	205.97			9.53	155.32
700	28	711.2							7.92	139.47	12.7	222.13	15.88	276.48	9.53	167.44
750	3C	762	6.35	120.15			7.92	149.55	7.92	149.55	12.7	238.28	15.88	296.68	9.53	179.56
800	32	812.8							7.92	159.62	12.7	254.44	15.88	316.88	9.53	191.69	17.48	348.11
850	34	863.6							7.92	169.64	12.7	270.5	15.88	336.96	9.53	203.74	17.48	370.22
900	36	914.4							7.92	179.77	12.7	286.75	15.88	357.28	9.53	215.93	19.05	427.09

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Types of Stainless Steel 321H Pipes

Are Custom Sizes Available for Stainless Steel 321H Pipes?

Yes, we offer custom sizes for Stainless Steel 321H Pipes to meet your specific requirements. Our team at Tun Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@tunpipes.com.

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Stainless Steel 321/321H seamless tubing is commonly found in settings that demand high corrosion resistance and thermal stability. You’ll often see it in chemical processing, petrochemical plants, and power generation systems, where the tubes are exposed to high-temperature fluids and gases. Its exceptional strength and oxidation resistance make it ideal for exhaust systems, heat exchangers, and furnace components. Moreover, it’s also used in the aerospace, food processing, and pharmaceutical sectors, where hygiene and durability are crucial.