317L Austenitic Stainless Steel Pipe

Superior Corrosion Resistance
TP317L stainless steel pipe contains3–4% molybdenum, offering better corrosion resistance than 316L in chloride-rich environments.

Low Carbon Content
Thelow carbon composition of TP317Lminimizes carbide precipitation during welding and improves resistance tointergranular corrosion.

High Resistance to Chemical Media
TP317L stainless steel pipes are widely used inacidic and aggressive chemical processing systems.

Excellent Weldability and Fabrication
TP317L stainless steel pipe can be easily welded and fabricated for complex industrial piping systems.

Suitable for Severe Service Environments
Due to its superior corrosion resistance, TP317L pipe is suitable foroffshore platforms, marine systems, desalination plants, and chemical reactors.

Standard	Description	Equivalent Grade
ASTM A312	Seamless and welded stainless steel pipe	TP317L
ASTM A213	Seamless heat exchanger tubes	TP317L
ASTM A269	Stainless steel tubing	TP317L
EN 10216-5	Seamless stainless steel tube for pressure	1.4438
DIN	Stainless steel pipe standard	X2CrNiMo18-15-4
JIS G3459	Stainless steel pipe	SUS317L
GB/T 14976	Seamless stainless steel pipe	00Cr19Ni13Mo3

These standards ensure thatTP317L stainless steel pipe meets global requirements for mechanical properties, chemical composition, and dimensional tolerances.

Different specifications can be customized according to special requirements.

Element	C	Mn	P	S	Si	Cr	Ni	Mo
TP317L	≤0.03	≤2.00	≤0.045	≤0.03	≤1.00	18–20	11–15	3–4

The higher molybdenum content improvespitting resistance equivalent number (PREN)and enhances corrosion resistance.

TP317L stainless steel pipes offerexcellent mechanical strength and corrosion resistance in aggressive environments.

317 Seamless & Welded Stainless Steel Pipe – Delivery Condition

Pipes are normally supplied in annealed and pickled condition, providing a clean, smooth surface and excellent corrosion resistance. Upon request, bright annealed or polished finishes can be provided to meet specific sanitary, aesthetic, or industrial requirements.

Manufacturing Process of 317 Seamless Steel Pipe

Womic Steel adopts advanced production technology to ensure each317 Seamless Stainless Steel Pipemeets exact specifications and flawless surface quality.

1.    Raw Material Selection:High-quality317Stainless Steel Pipe billets from certified mills (Baosteel, TISCO, POSCO).

2.    Heating and Piercing:Billets heated to a controlled temperature and pierced using a rotary piercing mill to form hollow shells.

3.    Hot Rolling:Shells elongated and rolled to desired size.

4.    Cold Drawing / Cold Pilgering:Pipes refined to precise dimensions and improved surface finish.

5.    Solution Annealing:Heat treatment to restore corrosion resistance and ductility.

6.    Pickling & Passivation:Removal of oxides and creation of passive film for enhanced corrosion protection.

7.    Straightening and Dimensional Calibration:Ensures consistent roundness and wall uniformity.

8.    Final Inspection & Marking:Each pipe tested, marked with grade, heat number, and standard before packing.

This process guarantees a smooth internal bore, high structural integrity, and exceptional corrosion resistance across all batches of Womic Steel’s317Seamless Steel Pipe.

Womic Steel utilizes state-of-the-art manufacturing technology to ensure every317Welded Stainless Steel Pipe meets precise specifications and delivers excellent surface quality and performance.

1.    Raw Material Selection:High-quality317stainless steel strips/coils from certified suppliers (e.g., Baosteel, TISCO, POSCO).

2.    Slitting & Uncoiling:The steel coil is slit to the required width and uncoiled for feeding into the forming mill.

3.    Forming & Welding:The strip is progressively formed into a cylindrical shape and the edges are welded together using advanced TIG or Plasma welding techniques to create a solid weld seam.

4.    Weld Seam Treatment:The external weld bead is removed to achieve a smooth surface, and the internal bead may be controlled or treated for bore cleanliness.

5.    Solution Annealing:A full heat treatment process is applied to dissolve carbides, restore corrosion resistance, and relieve stresses from welding and forming.

6.    Sizing & Calibration:The pipe is passed through a sizing mill to achieve the final precise outer diameter and roundness.

7.    Straightening:The pipe is straightened to ensure optimal linearity.

8.    Pickling & Passivation:Chemical treatment removes scale and impurities, while promoting the formation of a protective passive oxide layer on the surface, including the weld zone.

9.    Non-Destructive Testing (NDT):The weld seam is inspected using methods like Eddy Current or Ultrasonic Testing to ensure integrity and quality.

10. Final Inspection & Marking:Each pipe undergoes dimensional checks, visual inspection, and is marked with grade, heat number, and relevant standards before packaging.

This controlled process guarantees a consistent weld seam, excellent dimensional accuracy, and superior corrosion resistance for every batch of Womic Steel's317Welded Steel Pipes.

Outside Diameter:6mm – 1219mm (1/4" – 48")

Wall Thickness:0.5mm – 50mm (SCH 5S – SCH XXS)

Length:Up to 12m(fixed or random)

Tolerances:According to ASTM A999 / EN ISO 1127

ANSI B 36.19/ANSI B36.10 DIMENSIONS OF SEAMLESS &WELDED STAINLESS STEEL PIPE
公称尺寸 Nominalsize		外径 mm	ANSIB36.19				ANSIB36.10ANSIB36.10
DN	NPS	mm	5S	10S	40S	80S	10	20	30	STD	40	60	XS	80	100	120	140	160XXS
6	1/8"	10.29		1.24	1.73	2.41				1.73	1.73		2.41	2.41
8	1/4"	13.72		1.65	2.24	3.02				2.24	2.24		3.02	3.02
10	3/8"	17.15		1.65	2.31	3.20				2.31	2.31		3.20	3.20
15	1/2"	21.34	1.65	2.11	2.77	3.73				2.77	2.77		3.73	3.73				4.78	7.47
20	3/4"	26.67	1.65	2.11	2.87	3.91				2.87	2.87		3.91	3.91				5.56	7.82
25	1"	33.4	1.65	2.77	3.38	4.55				3.38	3.38		4.55	4.55				6.35	9.09
32	1 1/4"	42.16	1.65	2.77	3.56	4.85				3.56	3.56		4.85	4.85				6.35	9.70
40	1 1/2"	48.26	1.65	2.77	3.68	5.08				3.68	3.68		5.08	5.08				7.14	10.16
50	2"	60.33	1.65	2.77	3.91	5.54				3.91	3.91		5.54	5.54				8.74	11.07
65	2 1/2"	73.03	2.11	3.05	5.16	7.01				5.16	5.16		7.01	7.01				9.52	14.02
80	3"	88.9	2.11	3.05	5.49	7.62				5.49	5.49		7.62	7.62				11.13	15.24
90	3 1/2"	101.6	2.11	3.05	5.74	8.08				5.74	5.74		8.08	8.08
100	4"	114.3	2.11	3.05	6.02	8.56				6.02	6.02		8.56	8.56		11.13		13.50	17.12
125	5”	141.3	2.77	3.40	6.55	9.52				6.55	6.55		9.52	9.52		12.70		15.90	19.05
150	6"	168.28	2.77	3.40	7.11	10.97				7.11	7.11		10.97	10.97		14.30		18.20	21.95
200	8"	219.08	2.77	3.76	8.18	12.70		6.35	7.04	8.18	8.18	10.30	12.70	12.70	15.10	18.20	20.60	23.00	22.22
250	10"	273.05	3.40	4.19	9.27	12.70		6.35	7.80	9.27	9.27	12.70	12.70	15.09	18.26	21.44	25.40	28.58
300	12"	323.85	3.96	4.57	9.52	12.70		6.35	8.38	9.52	10.31	14.27	12.70	17.48	21.44	25.40	28.58	33.32
350	14"	355.6	3.98	4.78			6.35	7.92	9.52	9.52	11.13	15.09	12.70	19.05	23.83	27.79	31.75	35.71
400	16"	406.4	4.19	4.78			6.35	7.92	9.52	9.52	12.70	16.66	12.70	21.44	26.19	30.96	36.53	40.49
450	18"	459.2	4.19	4.78			6.35	7.92	11.13	9.52	14.27	19.05	12.70	23.83	29.36	34.92	39.67	45.24
500	20"	508	4.77	5.53			6.35	9.52	12.70	9.52	15.09	20.62	12.70	26.19	32.54	38.10	44.45	50.01
550	22"	558.8	4.77	5.53			6.35	9.52	12.70	9.52	15.87	22.22	12.70	28.57	34.92	41.27	47.62	53.97
600	24"	609.6	5.54	6.35			6.35	9.52	14.70	9.52	17.48	24.61	12.70	30.96	38.89	46.02	52.37	59.94
650	26"	660.4					7.92	12.70		9.52			12.70
700	28"	711.2					7.92	12.70	15.88	9.52			12.70
750	30"	762	6.35	7.92			7.92	12.70	15.88	9.52			12.70
800	32"	812.8					7.92	12.70	15.88	9.52			12.70

Womic Steel offers a wide range of surface finishes to meet various industrial, sanitary, and decorative applications.

Each 317 Stainless Steel Pipe surface is inspected for uniform gloss, absence of pits, and consistent finish quality.

Every317 Stainless Steel Pipeundergoes comprehensive inspection in accordance with ASTM, EN, and GB standards to guarantee reliability and performance:

l Visual & Dimensional Inspection:Surface, roundness, and thickness checked.

l Hydrostatic Pressure Test:100% tested for leakage and pressure resistance.

l Eddy Current Test:Detects surface and sub-surface imperfections.

l Ultrasonic Test (UT):Ensures internal integrity of the seamless structure.

l Positive Material Identification (PMI):Confirms correct chemical grade of the317Stainless Steel Pipe.

l Intergranular Corrosion Test (IGC):Validates resistance to sensitization.

l Flattening & Flaring Tests:Evaluate ductility and deformation capability.

l Hardness & Tensile Testing:Confirms mechanical compliance with ASTM standards.

l Surface Roughness and Cleanliness Check:For sanitary or polished tubes.

l Third-Party Inspection (SGS / BV / TUV):Available upon customer request.

These extensive tests ensure that every 317 Stainless Steel Pipe from Womic Steel meets the highest international standards for reliability and longevity.

17 Stainless Steel Pipe is ideal for a wide variety of industries, offering long service life and corrosion resistance in demanding conditions:

l 317 Stainless Steel Pipe for Chemical and Petrochemical Industry:Process piping, acid-resistant lines.

l 317 Stainless Steel Pipe for Food and Beverage Industry:Sanitary systems, liquid transfer, brewing pipelines.

l 317 Stainless Steel Pipe for Pharmaceutical Equipment:Clean piping, sterile environments.

l 317 Stainless Steel Pipe for Heat Exchanger Tubes:Boilers, condensers, and evaporators.

l 317 Stainless Steel Pipe for Marine Engineering:Offshore pipelines, seawater systems, desalination, ballast piping (ship classification certifications available from ABS, BV, DNV, LR, GL, RINA, CCS, KR, NK).

l 317 Stainless Steel Pipe for Construction and Decoration:Handrails, structural and architectural applications.

l 317 Stainless Steel Pipe for Water Treatment and Gas Systems:High-purity and corrosion-resistant pipelines.

Each317Stainless Steel Pipe is securely packed and clearly labeled to ensure safe and efficient transport worldwide.

General packaging: Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends for local truck transport.

Hexagonal packaging: Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends for local truck transport.

Packaging of welded pipe in medium and large sizes: Wrapped with woven fabric by automatic packaging for export sea-worthy transport.

Packaging for medium and large size welded pipes to be exported: Wooden or steel crate packaging for export sea-worthy transport.

General packaging for products to be exported: Wooden box for export sea-worthy transport.

Packaging of condensation pipe and low-pressure heater tube: Wooden box for local truck and export sea-worthy transport.

1. Direct cooperation with global shipowners ensures the most competitive freight rates.

2. Professional loading and securing teams guarantee damage-free shipment.

3. Efficient document preparation, minimizing customs delays.

4. Rapid delivery time — standard sizes kept in ready stock more than 10,000tons.

5. Continuous cargo tracking and after-sales follow-up to ensure smooth arrival at destination.

Womic Steel is a trusted manufacturer and exporter specializing in317 Stainless Steel Pipe,committed to delivering premium quality and professional service.

l  Strict quality control under ISO and PED certification.

l  Modern production lines and experienced technicians.

l  Complete testing, inspection, and documentation support.

l  Flexible customization and surface finishing options.

l  Fast production cycle and reliable global shipping.

For inquiries, technical support, or to request a quotation for your specific clad pipe requirements, please contact us:

Website: www.womicstainless.com
E‑mail: info@womicstainless.com

Tel / WhatsApp / WeChat:

Victor: +86 15575100681

Jack: +86 18390957568

Womic Steel – Your reliable partner for high‑quality stainless steel seamless pipes, metallurgically bonded clad tubes, and custom solutions for corrosion‑resistant applications.