ASTM A269 TP316L Welded Stainless Steel Tube for Shell and Tube Heat Exchanger Tube Bundles
Yuhong Group Co., Ltd. supplies heat exchangers, pressure vessels and air-cooled equipment, together with tube bundles, U-tubes, finned tubes, heat exchanger tubes, heat exchanger tubesheets, baffles and heads. This product is ASTM A269 TP316L welded stainless steel tube for general corrosive service.
1. Chemical Composition: ASTM A269 TP316L / UNS S31603
| Element |
Requirement, % |
| Carbon, C |
0.035 max |
| Manganese, Mn |
2.00 max |
| Phosphorus, P |
0.045 max |
| Sulfur, S |
0.030 max |
| Silicon, Si |
0.75 max |
| Chromium, Cr |
16.0-18.0 |
| Nickel, Ni |
10.0-14.0 |
| Molybdenum, Mo |
2.00-3.00 |
Heat analysis is made for each heat. Product analysis, when specified, shall conform to ASTM A269/A269M.
2. Manufacture and Test Controls
| Control Area |
Requirement |
| Melting |
Any steelmaking process; secondary melting permitted. Transition material from sequential strand casting must be separated. |
| Tensile |
Per ASTM A269/A269M; yield strength determined by 0.2% offset or 0.5% total extension. |
| Weld flash |
For OD over 2 in. [50.8 mm] or wall over 0.135 in. [3.44 mm], internal flash cut to 0.010 in. [0.25 mm] max. For OD 2 in. and under and wall 0.135 in. and under, 0.006 in. [0.15 mm] max. |
| Nondestructive examination |
Each tube examined by eddy current, ultrasonic or flux leakage methods. Reference notches/holes follow the invoked general requirements. |
| Hydrostatic alternative |
P = 32000t/D psi or P = 220.6t/D MPa; held at least 5 s; need not exceed 1000 psi [7 MPa] unless ordered higher. |
| Dimensions |
Wall, outside diameter, length, ovality and straightness follow the applicable tolerance tables of ASTM A269/A269M. |
| Repair welding |
Only with purchaser approval; repaired tubes marked "WR", reheat treated or stress relieved as required, and retested. |
3. Supply Capability and Material Grades
| Category |
Scope |
| Equipment |
Shell and tube heat exchanger, pressure vessel, air-cooled unit |
| Components |
Tube bundle, U-tube, heat exchanger tube, finned tube, heat exchanger tubesheet, baffle, head |
| A269 austenitic grades |
TP304/L, TP316/L, TP321, TP347, subject to order |
4. Applications
ASTM A269 TP316L welded tube is used where general corrosion resistance, weldability and clean dimensional control are required. Typical service includes shell and tube heat exchanger tubes, condenser tubing, air-cooler tubes, pressure vessel internals and replacement tube bundles. TP316L is often selected for welded assemblies because its low carbon grade supports weld-zone corrosion resistance under the chemical limits of ASTM A269/A269M.
5. Technical Highlights and Customization
- Welded TP316L construction with controlled internal flash and NDT.
- U-bend, fixed length, random length, finning, hydrostatic testing and third-party inspection can be specified.
- Tube bundles can be supplied with heat exchanger tubesheets, baffles and heads for shell and tube heat exchanger assembly.
- Final selection depends on design pressure, temperature, corrosion environment and purchase order requirements.
6. Frequently Asked Questions
A. Is ASTM A269 TP316L welded tube suitable for heat exchanger tubes?
Yes, for general corrosive service within the ASTM A269/A269M scope. Confirm design conditions and testing before ordering.
B. What does TP316L mean?
It is a low-carbon austenitic stainless steel grade with Cr, Ni and Mo. The lower carbon content supports welded joint performance.
C.Can you supply U-bent tubes and tube bundles?
Yes. U-bending, finning, tube bundle assembly, heat exchanger tubesheet and baffle supply are available.
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