Stainless Steel 347H Pipes

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Stainless Steel 347H Pipes Manufacturer, Supplier and Exporter in Hamilton, New Zealand

Blundell Pipes and Tubes, located in Hamilton, New Zealand, stands out as a top manufacturer and supplier of high-quality stainless steel piping solutions. They specialize in Stainless Steel 347H pipes, which are specifically designed to handle tough high-temperature and corrosion-resistant applications. Known for their precision in manufacturing and commitment to international standards, Blundell Pipes and Tubes caters to various industries, including chemical processing, petrochemical, power generation, and engineering. Their 347H pipes are built to deliver dependable performance, long-lasting durability, and structural integrity, ensuring smooth operation in critical industrial settings.

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Stainless Steel 347H Pipes are a carbon-rich variant of 347 grade, comprising 17–20% chromium, 9–13% nickel, and columbium (niobium) for intergranular corrosion resistance. The increase in carbon content to up to 0.10% increases high-temperature strength and creep resistance. These pipes provide tensile strength of 515–750 MPa and yield strength of approximately 205 MPa. Stainless Steel 347H offers superior resistance to thermal fatigue, stress rupture, and oxidation at temperatures up to 900°C, with excellent weldability and structural stability under constant heat exposure.

Stainless Steel 347H 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

347H Stainless Steel Pipes Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Cb	Ni	Fe
SS 347H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	8xC – 1.10	9.0 -13.0	63.72 min

SS 347H Pipes Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
347H	515	205	40	92	201

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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 347H Pipes from Blundell Pipes and Tubes?

Stainless Steel 347H pipes are made from a niobium-stabilized austenitic chromium-nickel alloy, featuring a higher carbon content than 347, which boosts strength at elevated temperatures. Typically, these pipes consist of 17–19% chromium, 9–13% nickel, and 0.5–1% niobium. They boast impressive mechanical properties, such as a tensile strength of 515–750 MPa, yield strength of 205–275 MPa, and elongation of 35–45%. This alloy offers exceptional resistance to intergranular corrosion, thermal creep, and oxidation, making it perfect for continuous high-temperature use.

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Largest Stainless Steel 347H Pipes Supplier in Hamilton, New Zealand

Blundell Pipes and Tubes, one of the largest suppliers of Stainless Steel 347H Pipes in Hamilton, New Zealand, 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 347H 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 347H Pipes

Are Custom Sizes Available for Stainless Steel 347H Pipes?

These pipes find extensive applications in heat exchangers, boilers, chemical processing equipment, petrochemical plants, and exhaust systems. With their high-temperature stability, corrosion resistance, and mechanical strength, Stainless Steel 347H pipes are a trustworthy option for industrial operations that demand durable, high-performance piping capable of enduring extreme conditions.

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Stainless Steel 347H Pipes find extensive application in high-temperature services like heat exchangers, superheaters, furnace tubing, boiler equipment, and petrochemical processing equipment. They are especially well-suited for thermal cycling, pressure fluctuation, and corrosive fluid environments. The higher carbon content in these pipes renders them particularly useful for pressure-containing systems and welded components having requirement for long-term functioning at higher temperature service. Stainless Steel 347H provides a robust and reliable solution to those industries which need high creep strength, resistance to corrosion and mechanical stability under harsh operating conditions.