ASTM A213 TP321/TP321H Stainless Steel Heat Exchanger Tube
Oct 15, 2025
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The ASTM A213 SS 321 pipes we supply are designed with raw material quality compliant with national and international standards. ASTM A213 stainless steel 321 seamless pipes are alloyed with titanium, which helps reduce or prevent carbide precipitation during the welding process.
ASTM A213 stainless steel 321 cold-drawn pipes and ASTM A213 stainless steel 321 heat exchanger pipes are primarily used for continuous and intermittent service temperatures within the carbide precipitation range of 800°F to 1500°F (427°C to 816°C). Meanwhile, ASTM A213 321 seamless condenser pipes deliver oxidation resistance up to 1600°F (871°C).
We offer customizable options for ASTM A213 SS 321 boiler pipes, providing various sizes, grades, and thicknesses tailored to customer requirements, all at market-leading prices.Welcome to purchase ASME SA213 SS 321 seamless pipes and SS 321 seamless pipes from us in China at reasonable prices.Email: sales@gneestainless.com
ASTM A213 TP 321 Seamless Tube Specifications
| Standard | ASTM A213/ASME SA213 |
|---|---|
| Grade | TP321 stainless steel |
| Tube Type | Seamless Tube |
| Finishes | Annealing Pickling Bright Annealing |
| Outside Diameter | 1/8″ – 5″ |
| Thickness | 0.015″ – 0.500″ |
| Length | Fixed And Random Length |
| Application | Boiler, Heat Exchanger, Super Heater |
tp 321 Stainless Steel Tube Mechanical Properties Chemical Composition % Max
| C | Mn | P | S | Si | Cr | Ni | Ti |
| 0.08 | 2 | 0.045 | 0.03 | 1 | 17-19 | 9-12 | 5(C + N)- 0.70 |
ASTM A213 TP 321 Stainless steel heat exchanger tubes Mechanical Property
| Gr. | Tensile Strength min | Yield Strength min | Elongation (%) | Brinel/Vickers | Rockwell |
| TP321 | 75ksi ( 515MPa ) | 30ksi ( 205MPa ) | 35 min | 192HBW/200HV | 90HRB |
SS 321 Tube ASTM A213 Tolerances
| Specification | Allowable Outside Diameter Variation in mm | Allowable Wall Thickness Variation | Exact Length Tolerance in mm | Testing | ||||
| Nominal Diameter | Over | Under | %Over | %Under | Over | Under | ||
| ASTM-A213 TP321 Seamless Boiler Superheater and Heat Exchanger Tubes |
Under 25.4 | .1016 | .1016 | +20 | -0 | 3.175 | 0 | Flattening Test |
| 25.4-38.1 incl | .1524 | .1524 | +22 | -0 | 3.175 | 0 | Tension Test | |
| 38.1-50.8 excl | .2032 | .2032 | +22 | -0 | 3.176 | 0 | Flare Test | |
| 50.8-63.5 excl | .254 | .254 | +2 | -0 | 4.46 | 0 | Hardness Test | |
| 63.5-76.2 excl | .3218 | .3218 | +22 | -0 | 4.76 | 0 | 100% Hydrostatic test | |
| 76.2-101.6 incl | .381 | .381 | +22 | -0 | 4.76 | 0 | Refer to ASTM A-450 | |
Quality Control System
Implementation:
Raw material PMI verification
In-process EC/UT non-destructive testing
100% dimensional inspection
All inspection records and photos are traceable, and SGS/TUV sampling reports are provided. Our three-level quality control system ensures consistent composition and performance for every batch of TP321 products, streamlining the incoming product inspection process for distributors.
Packaging: Packed in waterproof paper and steel strapping, in line with standard export sea freight packaging requirements, suitable for various modes of transportation, or customized according to customer requirements.
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