Stainless Steel 317/317L Pipes Manufacturer & Supplier

Midland Alloys Inc. is a well known Indian manufacturer and global supplier of Stainless Steel 317/317L Pipe. These pipes are made to meet demanding industrial environment with superior corrosion resistance and mechanical strength. ASTM A312 TP 317L is a molybdenum bearing austenitic stainless steel that perform exceptionally under elevated temperatures. The pipes are made using a variety of methods such as seamless and welded techniques and the alloy is heat treated with a solid solution to increase its strength. The demanding requirement of industries like petrochemical and power are met by ASME SA312 SS 317L Pipes, which have high yield strength, elongation exceeding 35% and exceptional pitting resistance. While 317L stainless steel pipe with its low carbon content, is perfect for welded applications where post-weld annealing isn’t practical, Type 317 offers improved tensile and creep strength at high temperatures. In continuous service up to 925°C, both grades offer exceptional resistance to oxidation and both localized and general corrosion.

Benefits of Using WNR. 1.4438 Seamless Pipe

Stainless Steel 317 and 317L Pipes deliver enhanced mechanical properties and corrosion resistance, making them a reliable choice for aggressive environments:

Outstanding resistance to pitting and intergranular corrosion
Better corrosion resistance than SS 316L in environments with a lot of chloride
Strong mechanical properties at high temperature
Better resistance to creep and stress rupture
Outstanding weldability without the need for post weld heat treatment
Preserves structural integrity in situations involving high pressure.
A smooth surface finish that is appropriate for food-grade and hygienic applications
Additional flexibility is provided by high elongation properties.

Difference Between Stainless Steel 317 and ASME SA312 SS 317L Pipes

Stainless Steel 317 Pipe contains a higher carbon content (max 0.08%) compared to 317L Stainless Steel Pipe (max 0.03%), giving 317 slightly better tensile strength but making it less suitable for welding without post-weld annealing. 317L, on the other hand, provides better resistance to intergranular corrosion, particularly in welded structures. Similar chemical elements such as molybdenum (3–4%), nickel (11–15%), and chromium (18–20%) are present in both grades; however, 317L is recommended for applications requiring welding and critical corrosion conditions. The mechanical strength of both grades is comparable but 317L provides higher elongation (40% vs. 35%).

Specification of Stainless Steel 317/317L Pipes

Types of Stainless Steel 317/317L Pipes

Manufacturing Types

Seamless Pipe

Weld-free, perfect for even strength and sizing precision.
Welded Pipe

Welded from flat-rolled steel, widely used where economy and large sizes are required.
ERW Pipe

Electric Resistance Welded (ERW) pipes provide neat, high quality weld seams and are ideal for medium-pressure applications.
EFW Pipe

Electric Fusion Welded (EFW) pipes are welded by fusion welding, usually applied in larger diameters and high-demand processes.

Pipe Forms

Round Pipe

The most common shape for fluid and gas transport.
Square Pipe

Used in architectural and structural applications requiring angular profiles.
Rectangular Pipe

Provides greater strength in load-bearing regions and flat structures.
Hydraulic Pipe

Designed to provide precise dimensional control for fluid systems under pressure.

Contact Midland Alloys Inc. for Your Stainless Steel 317 Pipes Needs

Contact us today to discuss how Stainless Steel 317/317L Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.

Technical Details & Delivery Condition

Stainless Steel 317/317L Pipes Chemical Composition

Grade	C (max)	Mn (max)	P (max)	S (max)	Si (max)	Cr	Mo	Ni
SS 317	0.08	2.00	0.045	0.030	0.75	18.0 – 20.0	3.0 – 4.0	11.0 – 15.0
SS 317L	0.035	2.00	0.045	0.030	0.75	18.0 – 20.0	3.0 – 4.0	11.0 – 15.0

Mechanical Properties of Stainless Steel 317/317L Pipes

Grade	Tensile Strength (MPa)	Yield Strength 0.2% Proof (MPa)	Elongation (% in 50mm)	Hardness (Brinell)
SS 317	515 min	205 min	40 min	217 max
SS 317L	515 min	205 min	40 min	217 max

Equivalent Grades of Stainless Steel 317/317L Pipes

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 317	1.4449	S31700	SUS 317	317S31	03Ch17N14M3	Z12CND17-13	X2CrNiMo18-15-4
SS 317L	1.4438	S31703	SUS 317L	317S12	03Ch17N14M3	Z2CND17-12	X2CrNiMo18-15-4

Stainless Steel Pipe Grades We Also Offer

Stainless Steel 304/304L Pipes

Stainless Steel 310/310S Pipes

Stainless Steel 316/316L Pipes

Stainless Steel 316Ti Pipes

Stainless Steel 317/317L Pipes

Stainless Steel 321/321H Pipes

Stainless Steel 347/347H Pipes

Stainless Steel 904L Pipes

Stainless Steel 253MA Pipes

SMO 254 Pipes

ASTM A358 PIPES

ASTM A778 PIPES

Pipe Dimensions

Thickness Chart

Pipe Dimensions

Thickness Chart

How SS 317/317L Pipes Are Manufactured

Round Bar

Analytic

Cut to Length

Centering

Heating

Perforation

Inspection of Size

Pickling

Inspection of Surface

Lubricating

Cold Drawing (Cold Rolling)

Degreasing

Annealing

Straightening

Cut

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping

Applications of Stainless Steel 317/317L Pipes

Industries with high temperatures, pressures and corrosive conditions frequently use 317L stainless steel pipes. In air pollution control systems, especially flue gas desulfurization units, these pipes resist acidic gases and condensation. They are used for handling concentrated acids in the chemical and petrochemical industries, and their hygienic, corrosion-resistant surfaces are advantageous in explosives and food processing facilities. They safely move aggressive fluids in the refining of petroleum. The pulp and paper industries use them in bleaching processes where chlorides are present, and power plants depend on their thermal stability in condenser systems.

Offshore Industry

Nuclear Industries

Refineries

Ship Building

Aerospace

Pharmaceutical

Why Choose Midland Alloys Inc. for SS 317/317L Pipes

We adhere to ASTM A312, EN and other international standards and have ISO 9001:2015 certification. Our products go through a rigorous quality control procedure that includes ultrasonic, PMI, and hydrotesting. On request, third-party inspections are also offered. Cut-to-length, personalized schedules and unique end finishes are just a few of the adaptable customization choices we provide. Industries in Europe, the Gulf, Southeast Asia, and Africa are served by our global supply network. Each pipe is labeled in accordance with ASME/ASTM guidelines and comes with Mill Test Certificates (MTCs) attesting to its mechanical and chemical characteristics. We establish enduring relationships founded on quality and trust by providing timely delivery and knowledgeable assistance.

FAQs – SS 317/317L Pipes

What is the temperature range for SS 317?

SS 317 performs well up to 870°C in continuous service and 925°C intermittently.

What is the price of SS 317/317L Pipes?

Stainless steel 317L pipe price varies based on size, schedule, and finish. Contact us for updated rates.

Which is more expensive – Stainless Steel 317 Pipe or 317L Pipe?

Stainless Steel 317 Pipe is generally costlier due to its higher carbon content and slightly enhanced strength.

Products Categories

ISO Certificate

Stainless Steel 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	6.35	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	6.35	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	8.74	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	11.13	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	13.49	4	160	34.05
141.30	6.55	5	40S	22.10
141.30	9.53	5	80S	31.44
141.30	15.88	5	160	49.87
168.28	3.40	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	18.26	6	160	68.59
219.08	8.18	8	40S	43.20
219.08	12.70	8	80S	65.63
219.08	18.23	8	120	91.30
219.08	23.01	8	160	112.97

Nominal size [inches]	Outside diameter [inches]	Outside diameter [mm]	Wall thickness [inches]	Wall thickness [mm]	Weight [lb/ft]	Weight [kg/m]
1/8	0.405	10.3	0.095	2.41	0.31	0.47
1/4	0.54	13.7	0.119	3.02	0.54	0.8
1/2	0.84	21.3	0.147	3.73	1.09	1.62
3/4	1.05	26.7	0.154	3.91	1.47	2.2
1	1.315	33.4	0.179	4.55	2.17	3.24
1 1/4	1.66	42.2	0.191	4.85	3	4.47
1 1/2	1.9	48.3	0.2	5.08	3.63	5.41
2	2.375	60.3	0.218	5.54	5.02	7.48
2 1/2	2.875	73	0.276	7.01	7.66	11.41
3	3.5	88.9	0.3	7.62	10.25	15.27
3 1/2	4	101.6	0.318	8.08	12.5	18.63
4	4.5	114.3	0.337	8.56	14.98	22.32
5	5.563	141.3	0.375	9.53	20.78	30.97
6	6.625	168.3	0.432	10.97	28.57	42.56
8	8.625	219.1	0.5	12.7	43.39	64.64
10	10.75	273	0.594	15.09	64.43	96.01
12	12.75	323.8	0.688	17.48	88.63	132.08
14	14	355.6	0.75	19.05	106.13	158.1
16	16	406.4	0.844	21.44	136.61	203.53
18	18	457	0.938	23.83	170.92	254.55
20	20	508	1.031	26.19	208.87	311.17
24	24	610	1.125	30.96	296.58	442.08