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ASTM A312 TP316L Stainless Steel Seamless Pipe - Corrosion-Resistant for Chemical Processing

Stainless steel pipe schedule chart - SCH 10S, 40S, 80S for ASTM A312 TP304/316L

Stainless steel U-bend tube for heat exchanger - seamless 304L for condenser service

Stainless steel pipe for seawater desalination - super duplex grade available for high chloride

Plain end stainless steel pipe with deburred edge - ready for buttweld or clamp connection

Stainless Steel Pipe

Keywords: Stainless Steel Seamless Pipe, Stainless Steel Tube, SS SMLS Pipe, Seamless Structural Pipe, Seamless Boiler Pipe, Heat Exchanger Tubes, Seamless Cold Drawn Tubes, Hot Finished Seamless Pipes
Size: (2)Outside Diameter: 1/8''~24''，Wall Thickness: SCH 5 ~ Double Extra Heavy
Standard & Grade : ASTM A213, ASTM A269, ASTM A312, ASTM A358, ASTM 813
Steel Grades: 304, 304L, 310/S, 310H, 316, 316L, 321, 321H
Ends: Beveled Ends, Square Cut, With LTC/STC/BTC/VAM Connection
Process: Cold Drawn, Cold Rolled, Precision Rolled
Usage: In Chemical Industry, Coal, Oil Field Open Machine, Building Materials Heat-resistant Parts
Packing: Waterproof Paper Wrapped, Packed in Wooden Cabinets


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Stainless steel is a versatile material comprised of a steel alloy and a small percentage of chromium—the addition of chromium adds to the material’s corrosion resistance, a trait that earned stainless steel its name. Because stainless steel is also low-maintenance, oxidation-resistant, and doesn’t affect other metals it comes in contact with, it is frequently used in a large array of applications, especially in piping and tubing manufacturing.

Stainless steel pipe is primarily used in piping systems to transport fluids or gases. Stainless steel pipe resists oxidation, making it a low-maintenance solution that is suitable for high-temperature and chemical applications. Because it is easily cleaned and sanitized, stainless steel pipe is also desired for applications involving food, beverages, and pharmaceuticals.

stainless-steel-pipe-details

Welded stainless steel pipe

Standards: ASTM A312

Grades: 304/L and 316/L

Sizes: 1/4" Thru 36"

Schedules: 10s, 20, 40s, 80s

Seamless Stainless Steel Pipe

Standards: ASTM A312

Grades: 304/L and 316/L

Sizes: 1/4" Thru 20”

Schedules: 10s, 40s, 80s, 160, and XXH

Equipment:

stainless-steel-pipe-equipment

Application of Stainless Steel Tube

- Kitchen benches, sinks, troughs, equipment and appliances

- Architectural paneling, railings & trim

- Chemical containers, including for transport

- Heat Exchangers

- Woven or welded screens for mining, quarrying & water filtration

- Threaded fasteners

- Water Supply Systems

- Power Plant

- Paper and pulp Industry

- General Purpose Applications

- Fabrication Industry

- Food Processing Industry

- Industrial Structural Project

- Oil and Gas Pipeline

- Chemical Industry

- Plumbing Industry

Our Advantages:

1. China-leading product service provider and exporter of steel pipe

2. Competitive price and quality from our own factory

3. One-stop Resource Integration

4. Passed the ISO9001, CE, and SGS certifications every year

5. Best service with 24-hour response

6. Flexible payment methods

7. Strong production capacity

8. Fast delivery and standard export packaging

9. OEM/ODM

Size of Stainless Steel Pipe

NB	Size	OD mm	40S mm	5S mm	10S mm	S 10 mm	S 20 mm	S 40 mm	S 60 mm	XS/80S mm	S 80 mm	S 100 mm	S 120 mm	S 140 mm	S 160 mm	XXS mm
	1/8”	10.29			1.24			1.73			2.41
	1/4”	13.72			1.65			2.24			3.02
	3/8”	17.15			1.65			2.31			3.20
15	1/2”	21.34	2.77	1.65	2.11			2.77		3.73	3.73				4.78	7.47
20	3/4”	26.67	2.87	1.65	2.11			2.87		3.91	3.91				5.56	7.82
25	1”	33.40	3.38	1.65	2.77			3.38		4.55	4.55				6.35	9.09
32	1 1/4”	42.16	3.56	1.65	2.77			3.56		4.85	4.85				6.35	9.70
40	1 1/2”	48.26	3.68	1.65	2.77			3.68		5.08	5.08				7.14	10.15
50	2”	60.33	3.91	1.65	2.77			3.91		5.54	5.54				9.74	11.07
65	2 1/2”	73.03	5.16	2.11	3.05			5.16		7.01	7.01				9.53	14.02
80	3”	88.90	5.49	2.11	3.05			5.49		7.62	7.62				11.13	15.24
90	3 1/2”	101.60	5.74	2.11	3.05			5.74		8.08	8.08
100	4”	114.30	6.02	2.11	3.05			6.02		8.56	8.56		11.12		13.49	17.12
125	5”	141.30	6.55	2.77	3.40			6.55		9.53	9.53		12.70		15.88	19.05
150	6”	168.27	7.11	2.77	3.40			7.11		10.97	10.97		14.27		18.26	21.95
200	8”	219.08	8.18	2.77	3.76		6.35	8.18	10.31	12.70	12.70	15.09	19.26	20.62	23.01	22.23
250	10”	273.05	9.27	3.40	4.19		6.35	9.27	12.70	12.70	15.09	19.26	21.44	25.40	28.58	25.40
300	12”	323.85	9.53	3.96	4.57		6.35	10.31	14.27	12.70	17.48	21.44	25.40	28.58	33.32	25.40
350	14”	355.60	9.53	3.96	4.78	6.35	7.92	11.13	15.09	12.70	19.05	23.83	27.79	31.75	35.71
400	16”	406.40	9.53	4.19	4.78	6.35	7.92	12.70	16.66	12.70	21.44	26.19	30.96	36.53	40.49
450	18”	457.20	9.53	4.19	4.78	6.35	7.92	14.27	19.05	12.70	23.83	29.36	34.93	39.67	45.24
500	20”	508.00	9.53	4.78	5.54	6.35	9.53	15.09	20.62	12.70	26.19	32.54	38.10	44.45	50.01
550	22”	558.80	9.53	4.78	5.54	6.35	9.53		22.23	12.70	28.58	34.93	41.28	47.63	53.98
600	24”	609.60	9.53	5.54	6.35	6.35	9.53	17.48	24.61	12.70	30.96	38.89	46.02	52.37	59.54
650	26”	660.40	9.53			7.92	12.70			12.70
700	28”	711.20	9.53			7.92	12.70			12.70
750	30”	762.00	9.53	6.35	7.92	7.92	12.70			12.70
800	32”	812.80	9.53			7.92	12.70	17.48		12.70
850	34”	863.60	9.53			7.92	12.70	17.48		12.70
900	36”	914.40	9.53			7.92	12.70	19.05		12.70

Product Name	Executive Standard	Dimension	Steel Code / Steel Grade
Seamless Austenitic Stainless Steel Pipes	ASTM A312/A312M, ASME SA312/SA312M	OD: 1/4″~20″ WT: SCH5S~SCH80S	TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Austenitic Stainless Steel Tubing for General Service	ASTM A269, ASME SA269	OD: 6.0~50.8mm WT: 0.8~10.0mm	TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Austenitic Alloy-Steel Boiler, Super Heater and Heat-Exchanger Tubes	ASTM A213/A213M, ASME SA213/SA213M	OD: 6.0~50.8mm WT: 0.8~10.0mm	TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Duplex Stainless Steel Tubing for General Service	ASTM A789 / A789M	OD: 19.0~60.5mm WT: 1.2~5.0mm	S31803, S32205, S32750
Seamless Duplex Stainless Steel Pipes	ASTM A790 / A790M	OD: 3/4″~10″ WT: SCH5S~SCH80S	S31803, S32205, S32750
Seamless Stainless Steel Mechanical Tubing	ASTM A511	OD: 6.0~50.8mm WT: 1.8~10.0mm	MT304, MT304L, MT304H, MT310, MT310S, MT316, MT316L, MT317, MT317L, MT321, MT321H, MT347
Seamless Stainless Steel Tubes for Pressure Purposes	EN 10216, DIN 17456, 17458	OD: 6.0~530.0mm WT: 0.8~34.0mm	1.4301, 1.4307, 1.4541, 1.4401, 1.4404, 1.4571, 1.4878, 1.4432, 1.4462

Chemical Composition

Grades	C max	Mn max	P max	S max	Si max	Cr	Ni	Mo
304	0.08	2.00	0.04	0.03	0.075	18.00-20.00	8.00-11.00	/
304L	0.035	2.00	0.04	0.03	0.075	18.00-20.00	8.00-13.00	/
316	0.08	2.00	0.04	0.03	0.075	16.00-18.00	11.00-14.00	2.00-3.00
316L	0.035	2.00	0.04	0.03	0.075	16.00-18.00	10.00-15.00	2.00-3.00

Mechanical Properties

Grades	Itemper	Tensile Psi	Yield Psi	Elong %	Rockwell Hardness
304	Annealed	85000-105000	35000-75000	20-55	80-95
304L	Annealed I1/8 Hard	80000-105000	30000-75000	20-55	75-95
316	Annealed	85000 min	35000 min	50 min	80 min
316L	Annealed	80000 min	30000 min	50 min	75 min

Standard

GB/T14975, GB/T14976, GB13296, GB9948, GB5310,GB/T21833,GB/T12771,ASTM A312,ASTM A213, ASTMA269, ASTM A789, ASTM A790, ASTM A511, ASTM A376, ASTM A688, JIS 3463, JIS 3459, DIN 2462, DIN 17458, DIN 17456, EN 10297-2, EN 10216-5, GOST 9940, GOST 9941, ASTM A450, ASTM A999, JIS G3459

ASTM A213/SA213, ASTM A312/SA312, ASTM A789
Austenitic		Ferritic & Martensitic	Ferritic / Austenitic
TP 304	TP 316H	TP 405	S32900
TP 304L	TP 316Ti	TP 410	S31803
TP 304H	TP 321	TP 430	S32205
TP 310S	TP 312H		S32750
TP 310H	TP 347		S31500
TP 316	TP 347H
TP 316L

Grades

Standards	Applicable Code No.	Steel Grade
ASTM	A213, A269, A268, A312, A376, A789, A790, B407, B423	TP304/L/H/N, TP310/S/H, TP316/L/H/Ti, TP317/L, TP321/H, TP347/H, TP410/S, TP430, S31803, S32205, S32750, S32760, S32304, S31500, TP904/L, S31254, N08800, N08810, N08825
ASME	SA213, SA268, SA312, SA376, SA789, SA790, SB407, SB423	TP304/L/H/N, TP310/S/H, TP316/L/H/Ti, TP317/L, TP321/H, TP347/H, TP410/S, TP430, S31803, S32205, S32750, S32760, S32304, S31500, TP904/L, S31254, N08800, N08810, N08825
JIS	JIS G3459, JIS G3463	SUS304TB. SUS304HTB, SUS304LTB, SUS310TB, SUS310STB, SUS316TB, SUS316LTB, SUS316TiTB, SUS317TB, SUS317LTB, SUS321TB, SUS321HTB, SUS347TB, SUS347HTB
EN & DIN	EN 10216-5, EN 10297, DIN 17456, DIN 17458	1.4301, 1.4307, 1.4541, 1.4401, 1.4404, 1.4571, 1.4429, 1.4436, 1.4435, 1.4462, 1.4424, 1.4507

What is the difference between welded and seamless stainless steel pipe? Which one should I choose?

A: Welded pipe is formed from a flat strip and welded along the seam, while seamless pipe is extruded from a solid billet with no weld. Welded pipe offers tighter dimensional tolerances, smoother interior surfaces, more consistent wall thickness, and typically 20-30% lower cost. Seamless pipe eliminates any concern about weld integrity in ultra-high-pressure or cyclic applications. For the vast majority of industrial uses – water, chemicals, steam up to 800°C, heat exchangers, and structural supports – a quality solution-annealed welded pipe performs identically to seamless. We recommend welded pipe for pressures up to ANSI 1500 and diameters below 12″.

Are welded stainless steel pipes suitable for high-temperature applications?

A: Yes, provided the pipe is fully solution-annealed after welding and the correct grade is selected. Austenitic grades maintain strength and oxidation resistance up to 800°C (1472°F). For higher temperatures (up to 1035°C), choose grade 310S or 321. However, as-welded pipes (ASTM A778) should NOT be used above 400°C because the weld zone may become sensitized and prone to intergranular corrosion. Always refer to ASME Section II allowable stress tables – welded A312 pipes receive the same stress values as seamless when fully radiographed.

How do you prevent rust on stainless welded pipes?

A: Although stainless is “stainless,” it can develop surface rust if contaminated with free iron from carbon steel tools or workshop dust. To prevent this: (1) Use dedicated stainless steel tools. (2) After fabrication, passivate the pipe with a nitric or citric acid solution. (3) Avoid prolonged contact with chlorides (bleach, saltwater). (4) For marine environments, choose 316L. If rust spots appear, they can be removed with a passivation gel or fine abrasive pad.

What is your typical lead time? Do you stock common sizes?

A: We maintain inventory of common sizes (NPS 1/2″ to 8″, Schedule 10S/40S, grades 304 and 316L) in 6-meter random lengths. Stock items can be cut and shipped within 7-10 days for domestic orders, 12-15 days for export. Non-stock sizes, special grades (310S, 321, duplex), or custom lengths typically require 20-30 days. Expedited production (10-15 days) is available for a surcharge.

Do you provide mill test certificates (MTC)?

A: Yes. Every shipment includes an EN 10204 Type 3.1 certificate signed by our quality manager. The MTC lists heat number, chemical composition, tensile properties, flattening test result, hydrostatic test pressure, and all dimensional checks. For an additional fee, we can provide Type 3.2 certificates with third-party verification (SGS, BV, TÜV). All MTCs are stored electronically for 10 years.