Products Categories

TP304 GRADE STAINLESS STEEL SEAMLESS PIPE

TP304L GRADE STAINLESS STEEL SEAMLESS PIPE

TP316 GRADE STAINLESS STEEL SEAMLESS PIPE

TP316L GRADE STAINLESS STEEL SEAMLESS PIPE

TP316Ti GRADE STAINLESS STEEL SEAMLESS PIPE

TP310S GRADE STAINLESS STEEL SEAMLESS PIPE

TP321 GRADE STAINLESS STEEL SEAMLESS PIPE

904L/N08904 GRADE SS SMLS PIPE

S31803 GRADE Duplex SS SMLS PIPE

S32205 GRADE Duplex SS SMLS PIPE

TP310S SS SMLS PIPE SOURCE INSPECTION READY.jpg

TP310S Stainless Steel Seamless Pipe - China Suppliers and Factory Stock Available for Fast Delivery

ZONSUN STEEL is a leading supplier and exporter of TP310S stainless steel seamless pipes, manufactured in our state-of-the-art factory in China. We adhere to international standards to ensure the highest quality products. Our extensive stock is readily available for immediate shipment, guaranteeing fast delivery to meet your needs. Trust ZONSUN STEEL, your reliable partner for premium stainless steel solutions

Product Detail

Introduction

ASTM A312 TP310S seamless pipes are engineered for extreme environments demanding unmatched resistance to oxidation, carburization, and thermal cycling. With 25% chromium and 20% nickel, this high-performance austenitic alloy excels in sustained high-temperature operations, outperforming standard 300-series stainless steels in aggressive heat and corrosive conditions.

Key Features

🔥

Extreme Temperature Stability

Operates reliably up to 115°C (2100°F), ideal for furnaces, kilns, and pyrolysis systems.

🛡️

Oxidation & Carburization Resistance

High Cr/Ni content forms a protective oxide layer, preventing scaling and gas corrosion.

💪

Robust Mechanical Strength

Tensile strength ≥515 MPa, yield strength ≥205 MPa, even at elevated temperatures.

Why Choose TP310S Stainless Steel Pipe?

📈 Exceptional High-Temperature Performance:

Maintains structural integrity at temperatures exceeding 1000°C, outperforming standard grades like 304/316. Minimizes scaling and deformation in cyclic heating environments.

🛡️ Superior Oxidation & Corrosion Resistance:

High chromium (Cr) content forms a protective oxide layer, resisting oxidation and sulfidation. Ideal for acidic/alkaline industrial processes and marine atmospheres.

💰 Long-Term Cost Efficiency:

Reduces downtime and replacement costs due to extended service life in harsh conditions. Low maintenance requirements compared to lower-grade steels.

⚙️ Versatility:

Suitable for welding, forging, and machining, compatible with standard fabrication methods.

✅ Compliance with Standards:

Meets ASTM A312/A999 and ASME specifications for industrial safety and reliability.

Example Use Case

💡

A chemical plant replaced carbon steel pipes with 310S pipes for transporting high-temperature corrosive gases, reducing annual maintenance costs by 40% and extending system lifespan by 8+ years.

Material Specification

Standard ASTM A312/A312M

O.D 1/8" NB TO 32" NB (10.29MM-812.80MM) (Customization Available)

W.T SCH 10S, SCH 40S, SCH 80S, SCH160, SCH XXS (Customization Available)

End Plain End, Beveled End, Threaded

Processing Cut-to-length; Polishing.

Delivery Condition Cold Drawn, Annealed and Pickled / Polished / Bright Annealed / Sand blasting / Shot Blasting.

Inspection 100% PMI TESTED EN10204.3.1B MILL TEST CERTIFICATE THIRD PARTY INSPECTION ACCEPTED

Marking Standard, Grade, OD, Thickness, Length, Heat No. (Or as per the customer’s request)

Packing Packed in Wooden Boxes, plywood cases, Steel Strips Bundled, or as per Customers Requests

Specials Sizes and Specifications other than above can be customized on request.

Applications

Chemical Industries
Thermal & Nuclear Power Plants
Fertilizer Plant
Aerospace
Food & Dairy Plants
Paper Industries
Oil & Gas Exploration
Desalination Plant
Pharmaceutical Plant

Specification Parameters

TP310S Chemical Composition

HEAT NO.		CHEMICAL COMPOSITION (%)
HEAT NO.		C	Mn	P	S	Si	Ni	Cr	Mo
STAND.	MIN.	-	-	-	-	-	19.00	24.00	0.75
STAND.	MAX.	0.08	2.00	0.045	0.030	1.00	22.00	26.00	-

TP310S Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell B (HR B)	Brinell (HB)
TP310S	515	205	35	90	187

Equivalent Grades - (ASTM A312 TP310S Equivalent Grades)

ISO	EN (Europe)	DIN (Germany)	JIS (Japan)	GB (China)	UNS (USA)	AISI/SAE
X8CrNi25-21 (ISO 15510)	1.4845 (EN 10088-2)	X8CrNi25-21 (DIN 17440)	SUS 310S (JIS G3459)	06Cr25Ni20 (GB/T 14976)	S31008	310S

ASTM A312/A312M Standard Cold Machining Size Deviation Permitted

Nominal Outside Diameter			Nominal Wall Thickness & Tolerances
Inches	mm	Allowable Deviation	Inches/mm	Ratio (t/D)	Allowable Deviation (%)
1/8”—1 1/2“	10.29—48.26	+0.4 -0.8	1/8”—1 1/2“ (10.29-73.03)	All t	+20 -12.5
>1 1/2“—4”	48.26—114.3	±0.8	3“—18” (88.9-457.2)	t/D = 5%	+22.5 -12.5
>4”—8"	114.3—219.08	+1.6 -0.8	3“—18” (88.9-457.2)	t/D > 5%	+15 -12.5
>8“—18"	219.08—457.2	+2.4 -0.8	≥20" (=508)	Welded pipe	+17.5 -12.5
>18”—26“	457.2—660.4	+3.2 -0.8	≥20" (=508)	t/D = 5%	+22.5 -12.5
>26”—34”	660.4—863.6	+4.0 -0.8	≥20" (=508)	t/D > 5%	+15 -12.5
>34“—48"	863.6—1219.2	+4.8 -0.8	-	-	-
Thin wall pipe (t/D=3%) ovality condition: Any cross section in a steel pipe Dmax Dmin=1.5% nominal, and (Dmax Dmin)/2 conforms to the stipulated diameter tolerance range.

Comparison Table Of American Standard Dimensions - (ANSI B36.19 & ANSI B36.10)

OD DN	IN	OD MM	ANSI B36.19										ANSI B36.10
			5s		10s		Sched.40s / 40			Sched.80s / 80			10		20		30		Standard
			mm	Kg/m	mm	Kg/m	mm	Kg/m	mm (40)	mm	Kg/m	mm (80)	mm	Kg/m	mm	Kg/m	mm	Kg/m	mm	Kg/m
6	1/8"	10.29	-	-	1.24	0.281	1.73	0.371	1.73	2.41	0.467	2.41	-	-	-	-	-	-	1.73	0.371
8	1/4"	13.72	-	-	1.65	0.499	2.24	0.644	2	3.02	0.809	3.02	-	-	-	-	-	-	2.24	0.644
10	3/8"	17.14	-	-	1.65	0.64	2.31	0.858	2.31	3.2	1.118	3.2	-	-	-	-	-	-	2.31	0.858
15	1/2"	21.34	1.65	0.814	2.11	1.016	2.77	1.26	2.77	3.73	1.62	3.73	-	-	-	-	-	-	2.77	1.26
20	3/4"	26.67	1.65	1.034	2.11	1.298	2.87	1.68	2.87	3.91	2.19	3.91	-	-	-	-	-	-	2.87	1.68
25	1"	33.4	1.65	1.312	2.77	2.125	3.38	2.5	3.38	4.55	3.23	4.55	-	-	-	-	-	-	3.36	2.5
32	1 1/4"	42.16	1.65	1.674	2.77	2.732	3.56	3.38	3.56	4.85	4.46	4.85	-	-	-	-	-	-	3.56	3.38
40	1 1/2"	48.26	1.65	1.926	2.77	3.155	3.68	4.05	3.68	5.08	5.4	5.08	-	-	-	-	-	-	3.68	4.05
50	2"	60.32	1.65	2.424	2.77	3.992	3.91	5.43	3.91	5.54	7.47	5.54	-	-	-	-	-	-	3.91	5.43
65	2 1/2"	73.02	2.11	3.747	3.05	5.345	5.16	8.62	5.16	7.01	11.4	7.01	-	-	-	-	-	-	5.16	8.62
80	3"	88.9	2.11	4.585	3.05	6.557	5.49	11.28	5.49	7.62	15.25	7.62	-	-	-	-	-	-	5.49	11.28
90	3 1/2"	101.6	2.11	5.272	3.05	7.526	5.74	13.56	5.74	8.08	18.62	8.08	-	-	-	-	-	-	5.74	13.56
100	4"	114.3	2.11	5.945	3.05	8.496	6.02	16.06	6.02	8.56	22.29	8.56	-	-	-	-	-	-	6.02	16.06
125	5"	141.3	2.77	9.639	3.4	11.74	6.55	21.76	6.55	9.52	30.92	9.52	-	-	-	-	-	-	6.55	21.76
150	6"	168.28	2.77	11.514	3.4	14.037	7.11	28.23	7.11	10.97	42.52	10.97	-	-	-	-	-	-	7.11	28.23
200	8"	219.08	2.77	15.049	3.76	20.334	8.18	42.49	8.18	12.7	64.57	12.7	-	-	6.35	33.28	7.04	36.8	8.18	42.4
250	10"	273.05	3.4	23.028	4.19	28.29	9.27	60.24	9.27	12.7	81.46	15.09	-	-	6.35	41.7	7.8	51	9.27	60.24
300	12"	323.85	3.96	31.806	4.57	36.633	9.52	73.76	10.31	12.7	97.36	17.48	-	-	6.35	49.68	8.38	65.14	9.52	73.76
350	14"	355.6	3.98	34.99	4.78	42.102	9.52	-	11.13	-	-	19.05	6.35	54.63	7.92	67.98	9.52	81.21	9.52	81.21
400	16"	406.4	4.19	42.35	4.78	48.22	9.52	-	12.7	-	-	21.44	6.35	62.58	7.92	77.9	9.52	93.13	9.52	93.18
450	18"	457.2	4.19	47.7	4.78	54.3	9.52	-	14.27	-	-	23.82	6.35	70.5	7.92	87.8	11.13	122.12	9.52	105.05
500	20"	508	4.77	60.32	5.54	69.766	9.52	-	15.09	-	-	26.19	6.35	78.47	9.52	116.97	12.7	155	9.52	116.97
550	22"	558.8	4.77	-	5.54	-	9.52	-	-	-	-	28.58	6.35	86.42	9.52	128.89	12.7	170.86	9.52	128.89
600	24"	609.6	5.54	84.1	6.35	96.215	9.52	-	17.48	-	-	30.96	6.35	96.215	9.52	140.8	14.7	209.54	9.52	140.81
650	26"	660.4	-	-	-	-	9.52	-	-	-	-	-	7.92	127.58	12.7	202.65	-	-	9.52	152.73
700	28"	711.2	-	-	-	-	9.52	-	-	-	-	-	7.92	137.52	12.7	218.54	15.88	271.94	9.52	164.65
750	30"	762	6.35	120.59	7.92	147.45	9.52	-	-	-	-	-	7.92	147.45	12.7	234.44	15.88	291.81	9.52	176.57
800	32"	812	-	-	-	-	9.52	-	17.48	-	-	-	7.92	157.39	12.7	250.33	15.88	311.67	9.52	188.5
850	34"	863.6	-	-	-	-	9.52	-	17.48	-	-	-	7.92	167.32	12.7	266.22	15.88	331.54	9.52	200.42
900	36"	914.4	-	-	-	-	9.52	-	19.05	-	-	-	7.92	177.26	12.7	282.18	15.88	351.41	9.52	212.34

Frequently Asked Questions (FAQ)

What makes ASTM A312 TP310S suitable for extreme high-temperature environments?

TP310S contains 25% chromium and 20% nickel, allowing it to maintain structural integrity and resist oxidation, scaling, and carburization at temperatures up to 115°C (2100°F).

What are the mechanical strength values of TP310S stainless steel pipes?

TP310S features a minimum tensile strength of 515 MPa, a minimum yield strength of 205 MPa, and a minimum elongation of 35% in 50mm, ensuring robust performance under stress.

In which industries are TP310S seamless pipes commonly applied?

They are widely used in chemical industries, thermal & nuclear power plants, fertilizer plants, aerospace, food & dairy plants, paper industries, oil & gas exploration, desalination plants, and pharmaceutical plants.

What equivalent global standards correspond to ASTM A312 TP310S?

Equivalent grades include ISO X8CrNi25-21, EN/DIN 1.4845, JIS SUS 310S, GB 06Cr25Ni20, and UNS S31008.

What quality inspections and certifications are provided for these pipes?

All pipes are 100% PMI tested, accompanied by an EN10204.3.1B Mill Test Certificate, and third-party inspection is fully accepted.

What delivery conditions and processing options are available?

Pipes are processed via cut-to-length and polishing. Delivery conditions include Cold Drawn, Annealed and Pickled, Polished, Bright Annealed, Sand blasting, or Shot Blasting.