ASTM A312 TP 317L Stainless Steel Seamless Pipe

If you are seeking ASTM A312 TP317L stainless steel piping suitable for long-term high-temperature operations in industries like petrochemicals, we can provide products and solutions that fully comply with these standards.

Our TP317L stainless steel pipes are manufactured in strict accordance with the ASTM A312 standard. We rigorously control the molybdenum content (3.0%–4.0%) and ensure the carbon content does not exceed 0.035%, while maintaining wall thickness within a +0% to +8% tolerance range. Each batch comes with a detailed chemical composition analysis report, guaranteeing that standard 317 or 316L grades are never passed off as TP317L.

Our finished TP317L seamless stainless steel pipes undergo comprehensive pickling and passivation on both internal and external surfaces, demonstrating excellent corrosion resistance-showing no signs of corrosion after 200 hours of neutral salt spray testing. Furthermore, surface scale and burrs are thoroughly removed; the smooth, clean internal surface reduces the risk of scaling by 60% and prevents impurity detachment from contaminating the conveyed medium, making these pipes an ideal choice for pharmaceutical, fine chemical, and food-grade applications.

ASTM A312 TP317L Pickled ss pipe

ASTM A312 TP317L Polished ss pipe 

ASTM A312 TP317L ss pipe 

GNEE maintains extensive steel inventory, allowing us to supply stainless steel pipes in various lengths, outer diameters, inner diameters, and wall thicknesses tailored to customer requirements.

If you would like to learn more about our products, please contact us for a consultation, and our team will get in touch with you.

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ASTM A312 317L SS Seamless Pipe Specification

Chemical Composition of aSTM A312 TP 317L SS Seamless Pipe

Element	Content (%)
Fe	Balance
Cr	18-20
Ni	11-15
Mo	3-4
Mn	2
Si	1
P	0.045
C	0.03
S	0.03

Dimensional tolerances for ASTM A312 TP 317L seamless stainless steel pipes

Outer diameter tolerance

NPS Nominal Pipe Size	Outer Diameter Tolerance (mm)	Inch tolerance
1/8" ~ 1-1/2"(DN6~DN40)	±0.4 mm	±1/64"
2" ~ 4"(DN50~DN100)	±0.8 mm	±1/32"
5" ~ 8"(DN125~DN200)	±1.6 mm	±1/16"
Large-diameter (DN250+) of 10 inches and above	±2.4 mm	±3/32"

Wall thickness tolerance

Pipe diameter range	Wall thickness-to-outside diameter ratio (T/D)	upper limit positive tolerance	Negative tolerance on the lower limit
NPS 1/8 ~ 2-1/2"	All ratios	+20%	-12.5%
NPS 3 ~ 18"	t/D ≤5%	+22.5%	-12.5%
NPS 3 ~ 18"	t/D ＞5%	+15%	-12.5%
NPS≥20" Large-diameter seamless	t/D ≤5%	+22.5%	-12.5%
NPS≥20" Large-diameter seamless	t/D ＞5%	+15%	-12.5%

ASTM A312 TP 317L SS Pipe Mechanical Properties

Properties	Metric	Imperial
Tensile strength	595 MPa	86300 psi
Yield strength	260 MPa	37700 psi
Modulus of elasticity	200 GPa	29000 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	55%	55%
Hardness, Rockwell B	85	85

Physical Properties of ASTM A312 TP 317L Stainless Steel Seamless Pipe

Specific Heat (0-100°C)	Thermal Conductivity	Thermal Expansion	Modulus Elasticity	Electrical Resistivity	Density
500	14.6	16.5	193	7.4	7.99
J.kg-1.°K-1	W.m -1.°K-1	mm/m/°C	GPa	μohm/cm	g/cm3

Applications of ASTM A312 TP317L Seamless Pipe

1.Chemical Industry
2. Pulp and Paper Industry
3. Marine, Seawater, and Coastal Environments
4. Power Generation & Flue Gas Desulfurization (FGD) Systems

5.High‑Purity Food Processing

6.Pharmaceutical and biotechnology industries

Chemical industry

Food industry

Biotechnology industry

ASTM A312 TP317L sS pipe Price

Specification	Outer Diameter × Wall Thickness	Batch size ≥ 1 ton (USD/kg)	500–1,000 kg Small Batch (USD/kg)
NPS1 SCH40	33.7×3.38mm	3.40~3.70	3.80~4.20
NPS2 SCH40	60.3×3.91mm	3.35~3.65	3.75~4.15
NPS3 SCH40	88.9×5.49mm	3.30~3.60	3.70~4.10
SCH80	33.7×6.55mm	3.70~4.00	4.10~4.50
SCH80	60.3×7.82mm	3.65~3.95	4.05~4.45
SCH80	88.9×8.56mm	3.60~3.90	4.00~4.40

ASTM A312 TP317L  Product Testing

We can issue comprehensive Material Test Certificates (MTCs) compliant with ASTM standards; we precisely verify molybdenum, nickel

and chromium content via PMI spectral analysis,and provide detailed information such as surface roughness and dimensional measurements.

Additionally, we offer EN 3.1 (mill self-inspection) and EN 3.2 (third-party witnessed) certificates to meet requirements for domestic pressure piping inspections, overseas commercial inspections, and rigorous audits by clients in the nuclear power or chemical industries.

surface roughness inspection

outer diameter inspection

chemical composition analysis           

 

High-Quality Packaging for Export Piping

ASTM A312 TP 317L seamless stainless steel pipes are individually packed in plastic bags, wrapped in waterproof material, and finally bundled with nylon rope before being boxed. Clear labels are affixed to the exterior to facilitate the identification of quantities and product numbers. We exercise great care during handling and transportation.

Plastic wrapping

Wooden crate packaging

Sealed protection

Customer visit

GNEE supplies 317L stainless steel pipes for export to over 60 countries and regions, including the United States, Mexico, Venezuela, Kuwait, Colombia, Turkey, Italy,and Vietnam.

 

FAQ

1.Is 317L seamless pipe suitable for high-temperature applications?

Yes. 317L can be used in high-temperature applications up to approximately 925°C (1697°F) in continuous service and about 870°C (1600°F) for intermittent use.

2.Is 317L stainless steel good?

317L has excellent corrosion resistance in a wide range of chemicals, especially in acidic chloride environments such as those encountered in pulp and paper mills. Increased levels of chromium, nickel and molybdenum compared to 316L stainless steel improve resistance to chloride pitting and general corrosion.

 

 

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