ASTM A312 TP316L Seamless Stainless Steel Pipe
ASTM A312 TP316L pipes are austenitic stainless steel pipes designed for corrosion-resistant service in demanding environments. With low carbon content, TP316L stainless steel pipes offer improved resistance to intergranular corrosion and excellent performance in chemical, petrochemical and marine applications.
Manufactured in both seamless and welded construction, ASTM A312 TP316L pipes comply with ASTM A312/A312M specifications and are widely used for fluid transportation, process piping and pressure applications. Material test certificates can be provided to ensure quality and full traceability.
We are the professional exporter and supplier of ASTM A312 TP316 Seamless Stainless Steel Pipes, ASME SA312 TP316L Seamless Stainless Steel Pipes.
Manufactured in compliance with ASTM A312 standards, Our ASTM A312 TP316L stainless steel pipes meet stringent quality requirements, ensuring consistency and reliability in performance. You can trust our TP316L pipes to deliver the durability and performance your projects demand.
ASTM A312 TP316 and TP316L are designated with UNS S31600 and UNS S31603, respectively. Although more expensive, pipes made of TP316/ TP316L have higher level corrosion resistance than that ofTP304/ TP304L. They can be used for a diversified range of corrosive chemical process piping which involves inks, rayon, photographic chemicals, paper, textiles, bleaches, and rubber.
ASTM A312 TP316L seamless stainless steel pipe, also supplied under ASME SA 312 TP316 / TP316L, is a molybdenum-bearing austenitic stainless steel pipe designed for corrosive and high-temperature service environments.
The low-carbon TP316L grade provides excellent resistance to intergranular corrosion after welding, making it a preferred choice for pressure piping systems in chemical, petrochemical, and marine applications.
What Is ASTM A312 TP316L?
ASTM A312 is the standard specification covering seamless, welded, and heavily cold-worked austenitic stainless steel pipes intended for high-temperature and general corrosive service.
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TP316 contains molybdenum for improved resistance to pitting and crevice corrosion
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TP316L is the low-carbon version, offering better weldability and reduced risk of carbide precipitation
Both grades are widely specified for pressure piping and process systems.
We can also supply A312 TP316/316L Dual Grade Pipes from ABS,BV,DNV-GL class approved makers,Mill test certificate EN 10204 3.1 /3.2 certificate will be provided
ASTM A 312
Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
Equivalent Grades
| Standard | Grade |
|---|---|
| ASTM / ASME | A312 / SA 312 TP316 / TP316L |
| UNS | S31600 / S31603 |
| EN | 1.4401 / 1.4404 |
| DIN / EN Name | X5CrNiMo17-12-2 / X2CrNiMo17-12-2 |
ASTM A312 Tp316L Pipe Chemical Composition
|
Weight %
|
C
|
Mn
|
P
|
S
|
Si
|
Cr
|
Ni
|
Mo
|
|
316L
|
.035
|
2.00
|
.045
|
.030
|
1.00
|
16.0-18.0
|
10.0-14.0
|
2.0-3.0
|
Mechanical Properties of ASTM A312/ASME SA312 TP316L, S31603
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % |
| 485 min | 170 min | 35 mi |
ASTM A312 TP316L Heat Treatment
All pipes shall be furnished in the heat-treated condition in accordance with the required heat-treating temperature and cooling requirements, pipes shall be individually quenched in water or rapidly cooled by other means (direct quenched).
The pipe shall be free of scale and contaminating exogenous iron particles. Pickling, blasting, or surface finishing is not mandatory when the pipe is bright annealed.
ASTM A312 TP316L Pipes Sizes Dimensions & Tolerances
ASTM A312 TP316L Pipes Permitted Variations in Wall Thickness
In addition to the implicit limitation of wall thickness for seamless pipe imposed by the limitation on weight in Specification A999/A999M, the wall thickness for seamless and welded pipe at any point shall be within the tolerances specified in Table 3, except that for welded pipe the weld area shall not be limited by the “Over” tolerance. The wall thickness and outside diameter for inspection for compliance with this requirement for pipe ordered by NPS and schedule number is shown in Table X1.1.
| NPS | *t/D | Tolerance, % from Nominal | |
|---|---|---|---|
| 1/8″~2.5″ | All | +20.0 | -12.5 |
| 3″~18″ | ≤5% | +22.5 | -12.5 |
| 3″~18″ | >5% | +15.0 | -12.5 |
| ≥20“ Wld. |
All | +17.5 | -12.5 |
| ≥20“ smls |
≤5% | +22.5 | -12.5 |
| ≥20“ smls |
>5% | +15.0 | -12.5 |
*t: nominal wall thickness; D: ordered outside diameter.
ASTM A312 TP/316/TP316L Pipes Supply Scope
| Product | ASTM A312 TP316L, 1.4404, UNS S31603 Stainless Steel Pipes |
| Specification | ASTM A312 / A312M Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes |
| Type | Seamless & Welded |
| Size Range | Size: 1/8” to 24” (10.3mm to 610mm) – Seamless |
| Size:1/8” to 36” (10.3mm to 914mm) – Welded | |
| 1/8” OD to 6” OD | |
| Thickness | 10s, 20, 40s, 40, 60, 80s, 80, 100, 120, 140, 160, XXH |
| Wall Thickness: 1mm to 60mm | |
| Length | 6 Meter, Custom Lengths |
| Other Grades | TP304, TP304L, TP304LN, TP316, TP316L, TP316LN, TP317, TP317/317L, TP321, TP347, TP310S |
| Test Certificates | Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2 |
| ASTM Reference Standards |
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| Testing | Mechanical Testing Such as Tensile of Area, Hardness Test, Chemical Analysis – Spectro Analysis, Positive Material Identification – PMI Testing, Flattening Test, Micro and MacroTest, Pitting Resistance Test, Flaring Test, Intergranular Corrosion (IGC) Test |
ASTM A312 TP316L Pipe vs TP316 Pipe
ASTM A312 TP316L pipe and TP316 pipe are both austenitic stainless steel pipes containing molybdenum, offering excellent corrosion resistance in chemical and marine environments. The primary difference between TP316L and TP316 lies in carbon content.
TP316L is a low-carbon grade (“L” stands for low carbon), which provides improved resistance to intergranular corrosion, particularly after welding. This makes ASTM A312 TP316L pipes more suitable for welded piping systems and applications requiring enhanced corrosion performance without post-weld heat treatment.
TP316 pipes, with a higher carbon content, generally offer slightly higher strength and are commonly used in applications where welding is limited or where higher mechanical strength is preferred.
For most corrosion-resistant piping systems, especially those involving welding, ASTM A312 TP316L pipe is the preferred choice, while TP316 pipe may be selected for specific strength-driven or non-welded applications.
ASTM A312 TP/316/TP316L PIPE SPECIFICATION
- Product Name:ASTM A312 TP/316/TP316L SEAMLESS STAINLESS STEEL PIPES
- Size:2in/4in/6inch/8in/10in/12in/16in/18in/20in/24in/28in/30in/32in
- Bore:ST10S/SCH40S/SCH XS/SCH160
- END:BE/PE/
- Material: ASTM A312 TP/316/TP316L
- standard:ASME SA312/ASTM A312
Applications of ASTM A312 TP316L Pipes?
Chemical & Petrochemical Industry – Acidic & corrosive environments
Marine & Shipbuilding – High resistance to seawater corrosion
Food & Beverage Industry – Hygienic and easy to clean
Pharmaceutical & Biotechnology – Prevents contamination
Oil & Gas Industry – Offshore platforms, pipelines
Water Treatment Plants – Corrosion-resistant piping systems
Standards Apply to ASTM A312 TP316L Pipes
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ASTM A312 – Standard specification for seamless & welded stainless steel pipes
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ASME B36.19 – Stainless steel pipe dimensions
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ASME B31.3 – Process piping code
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NACE MR0175 / ISO 15156 – Sour service compliance (for oil & gas)
How to order A312 TP316L Pipes?
| Item No. | Description | Quantity | Unit | Remarks |
|---|---|---|---|---|
| 1 | ASTM A312 TP316L Seamless Stainless Steel Pipe, Size: 2” NB × SCH 40S × 6 meters, Beveled Ends, Cold Drawn, Pickled & Passivated, as per ASME SA312 / ASTM A312 | 120 | Meters | Hydrostatic Tested, EN 10204 3.1 Certificate |
| 2 | ASTM A312 TP316L Seamless Pipe, 4” NB × SCH 10S × 6 meters, Beveled Ends | 60 | Meters | For chemical plant pipeline |
Download ASTM A312 Stainless steel pipe specification
ASTM A312 / ASME SA 312 TP316L seamless stainless steel pipes provide an excellent combination of corrosion resistance, weldability, and mechanical reliability.
With molybdenum alloying and low-carbon chemistry, TP316L pipes are widely trusted for demanding industrial and pressure piping applications.
