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- SS SMLS PIPE 2507 ASTM A790
- SS SMLS PIPE 2205 ASTM A790
- SS SMLS PIPE S31803 ASTM A790
- SS SMLS PIPE 904L ASTM A240
- SS SMLS PIPE TP321 ASTM A312
- SS SMLS PIPE TP310S ASTM A312
- SS SMLS PIPE TP316Ti ASTM A312
- SS SMLS PIPE TP316L ASTM A312
- SS SMLS PIPE TP316 ASTM A312
- SS SMLS PIPE TP304L ASTM A312
- SS SMLS PIPE TP304 ASTM A312
TP316L Seamless Stainless Steel Pipes - China Suppliers & Factory - Quick Shipment Available
Introduction
TP316L is a low-carbon variant of austenitic stainless steel (316L grade) commonly used in tubing and piping systems. It contains 16-18% chromium, 10-14% nickel, 2-3% molybdenum, and a maximum 0.035% carbon, enhancing corrosion resistance—particularly against chlorides and acids.
Key Features
Enhanced Corrosion Resistance
Superior resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) due to 2-3% molybdenum addition.
Excellent Weldability & Formability
Suitable for welding without post-weld heat treatment; retains corrosion resistance in welded zones.
Hygienic & Non-Reactive
Smooth surface resists bacterial growth, ideal for food processing, pharmaceuticals, and medical devices.
Standards Compliance
Meets ASTM A312 (pipes), ASTM A269 (tubing), and ASME SA-213 (boiler applications).
Why Choose TP316L Stainless Steel Pipe?
- Superior Chloride Resistance: Molybdenum (Mo) content provides unmatched protection against pitting/crevice corrosion in saltwater or de-icing salt exposure, outperforming 304/304L.
- Acid and Chemical Compatibility: Ideal for handling sulfuric, acetic, and phosphoric acids in industrial processes.
- Durability in Harsh Environments: Maintains structural integrity in coastal, marine, or high-humidity settings with minimal maintenance.
- Hygienic and Non-Reactive: Meets FDA, EU, and ASTM standards for food, beverage, and pharmaceutical hygiene.
- Long-Term Cost Savings: Reduced downtime and replacement costs due to extended service life in corrosive conditions.
- Certified Performance: Complies with ASTM A312, A358, and ASME SA-312 for pressure piping applications.
Example Use Case
"A coastal power plant replaced carbon steel cooling pipes with 316L stainless steel pipes, eliminating chloride-induced corrosion failures and cutting annual maintenance costs by 60%."
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)
Application:
- Chemical and Petrochemical Industry
- Pharmaceutical and Biotechnology
- Food and Beverage Industry
- Marine and Offshore Engineering
- Medical Devices and Implants
- Energy and Power Generation
- Water Treatment and Desalination
- Architectural and Decorative Applications
End:
Plain End, Beveled End, Threaded
Processing:
Cut-to-length; Polishing.
Inspection:
- 100% PMI TESTED
- EN10204.3.1B MILL TEST CERTIFICATE
- THIRD PARTY INSPECTION ACCEPTED
Delivery Condition:
Cold Drawn, Annealed and Pickled / Polished / Bright Annealed / Sand blasting / Shot Blasting.
Marking:
All SS SMLS Pipes are marked as follows: 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.
Specification Parameters
TP316L Chemical Composition
| HEAT NO. | CHEMICAL COMPOSITION (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| STAND. | LIMIT | C | Mn | P | S | Si | Ni | Cr | Mo |
| ASTM A312 | MIN. | - | - | - | - | - | 10.00 | 16.00 | 2.00 |
| MAX. | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 14.00 | 18.00 | 3.00 | |
TP316L Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) | Brinell (HB) | ||||
| TP316L | 485 | 170 | 35 | 95 | 220 |
Equivalent Grades - (ASTM A312 TP316L Equivalent Grades)
| USA (ASTM / AISI) | Germany (DIN, WNr) | Japan (JIS) | France (AFNOR) | England (BS) | Euronorms (EN) | China (GB) | International (ISO) |
|---|---|---|---|---|---|---|---|
| TP316L 316L S31603 |
1.4404 | SUS316L | Z2CND17-12 | 316S11 | X2CrNiMo17-12-2 | 022Cr17Ni12Mo2 | X2CrNiMo17-12-2 S31603 |
ASTM A312/A312M Standard Cold Machining Size Deviation Permitted
| Nominal Outside Diameter (OD) Tolerances | Nominal Wall Thickness (WT) Tolerances | ||||
|---|---|---|---|---|---|
| Inches | mm | Allowable Deviation | Inches / Ratio | mm Range | Allowable Deviation (%) |
| 1/8"—1 1/2“ | 10.29—48.26 | +0.4 -0.8 | 1/8”—1 1/2“ (All WT) | 10.29-73.03 | +20 -12.5 |
| >1 1/2“—4” | 48.26—114.3 | ±0.8 | 3“—18” (t/D=5%) | 88.9-457.2 | +22.5 -12.5 |
| >4”—8" | 114.3—219.08 | +1.6 -0.8 | 3“—18” (t/D>5%) | 88.9-457.2 | +15 -12.5 |
| >8“—18" | 219.08—457.2 | +2.4 -0.8 | ≥20" (Welded) | 508 | +17.5 -12.5 |
| >18”—26“ | 457.2—660.4 | +3.2 -0.8 | ≥20" (t/D=5%) | 508 | +22.5 -12.5 |
| >26”—34” | 660.4—863.6 | +4.0 -0.8 | ≥20" (t/D>5%) | 508 | +15 -12.5 |
| >34“—48" | 863.6—1219.2 | +4.8 -0.8 | - | - | - |
| Note: 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 (Stainless Steel Schedules) | ANSI B36.10 (Carbon/Alloy Schedules) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5s WT | 5s Kg/m | 10s WT | 10s Kg/m | 40s WT | 40s Kg/m | 80s WT | 80s Kg/m | Sch 10 WT | Sch 10 Kg/m | Sch 30 WT | Sch 30 Kg/m | STD WT | STD Kg/m | |||
| 6 | 1/8" | 10.29 | - | - | 1.24 | 0.281 | 1.73 | 0.371 | 2.41 | 0.467 | 2.41 | - | - | - | 1.73 | 0.371 |
| 8 | 1/4" | 13.72 | - | - | 1.65 | 0.499 | 2.24 | 0.644 | 3.02 | 0.809 | 3.02 | - | - | - | 2.24 | 0.644 |
| 10 | 3/8" | 17.14 | - | - | 1.65 | 0.640 | 2.31 | 0.858 | 3.20 | 1.118 | 3.20 | - | - | - | 2.31 | 0.858 |
| 15 | 1/2" | 21.34 | 1.65 | 0.814 | 2.11 | 1.016 | 2.77 | 1.260 | 3.73 | 1.620 | 3.73 | - | - | - | 2.77 | 1.260 |
| 20 | 3/4" | 26.67 | 1.65 | 1.034 | 2.11 | 1.298 | 2.87 | 1.680 | 3.91 | 2.190 | 3.91 | - | - | - | 2.87 | 1.680 |
| 25 | 1" | 33.40 | 1.65 | 1.312 | 2.77 | 2.125 | 3.38 | 2.500 | 4.55 | 3.230 | 4.55 | - | - | - | 3.38 | 2.500 |
| 32 | 1 1/4" | 42.16 | 1.65 | 1.674 | 2.77 | 2.732 | 3.56 | 3.380 | 4.85 | 4.460 | 4.85 | - | - | - | 3.56 | 3.380 |
| 40 | 1 1/2" | 48.26 | 1.65 | 1.926 | 2.77 | 3.155 | 3.68 | 4.050 | 5.08 | 5.400 | 5.08 | - | - | - | 3.68 | 4.050 |
| 50 | 2" | 60.32 | 1.65 | 2.424 | 2.77 | 3.992 | 3.91 | 5.430 | 5.54 | 7.470 | 5.54 | - | - | - | 3.91 | 5.430 |
| 65 | 2 1/2" | 73.02 | 2.11 | 3.747 | 3.05 | 5.345 | 5.16 | 8.620 | 7.01 | 11.400 | 7.01 | - | - | - | 5.16 | 8.620 |
| 80 | 3" | 88.90 | 2.11 | 4.585 | 3.05 | 6.557 | 5.49 | 11.280 | 7.62 | 15.250 | 7.62 | - | - | - | 5.49 | 11.280 |
Frequently Asked Questions
What is TP316L stainless steel?
TP316L is a low-carbon variant of austenitic stainless steel (grade 316L) commonly used for piping and tubing. It features 16-18% chromium, 10-14% nickel, and 2-3% molybdenum, which offers exceptional resistance to chlorides, acids, and general corrosion.
What are the primary applications of TP316L pipes?
TP316L is widely used in industries requiring high corrosion resistance and hygiene, including chemical/petrochemical processing, pharmaceuticals, biotechnology, food and beverage processing, marine engineering, water desalination, and medical implants.
Why choose TP316L over standard 304 stainless steel?
TP316L contains molybdenum (2-3%), which provides superior resistance to pitting and crevice corrosion in chloride-rich environments (like seawater or marine settings) compared to 304 stainless steel, which lacks molybdenum.
What does the "L" stand for in TP316L, and why is it important?
The "L" stands for "Low Carbon" (maximum 0.035%). This low carbon content prevents carbide precipitation during welding, maintaining the pipe's structural integrity and corrosion resistance in the heat-affected weld zones without requiring post-weld annealing.
What ASTM standards do TP316L pipes comply with?
TP316L pipes and tubes comply with major international standards, including ASTM A312 (for seamless and straight-seam welded pipes), ASTM A269 (for general service tubing), and ASME SA-213 (for boilers, superheaters, and heat-exchangers).