ASTM A213/SA213, ASTM A312/SA312, ASTM A789 Seamless Stainless Steel Tubing in Stock
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Gnee offers a comprehensive selection of ASTM A213/SA213, ASTM A312/SA312, and ASTM A789 seamless stainless steel tubing designed to meet the stringent performance requirements of heat exchangers, power plants, refineries, and industrial fluid systems. These tubing grades, including austenitic and duplex stainless steels, combine high mechanical strength with excellent corrosion resistance and superior pressure resistance. All tubing is manufactured to tight dimensional tolerances, undergoes nondestructive testing, and is certified to ASTM, ASME, and EN standards.
ASTM A213/SA213, ASTM A312/SA312, ASTM A789 Seamless Stainless Steel Tubing Specification
| Standard | Material Type | Typical Grades | Applications |
|---|---|---|---|
| ASTM A213 / ASME SA213 | Seamless austenitic tubing for heat exchangers & boilers | TP304, TP304L, TP316, TP316L, TP321 | Heat exchangers, condensers, superheaters |
| ASTM A312 / ASME SA312 | Seamless stainless steel pipes for general service | TP304, TP304L, TP316L, TP317L | Chemical, petrochemical, and fluid transport |
| ASTM A789 / ASME SA789 | Seamless duplex stainless steel tubing | S31803, S32205, S32750 | Offshore, desalination, and seawater systems |
ASTM A213/SA213, ASTM A312/SA312, ASTM A789 Seamless Stainless Steel Tubing in Stock
| Parameter | Specification |
|---|---|
| Outside Diameter | 6 mm – 114 mm |
| Wall Thickness | 0.5 mm – 8.0 mm |
| Length | 6 m / 12 m / Custom cut-to-length |
| Surface Finish | Bright Annealed (BA), Pickled, Polished |
| End Type | Plain / Beveled / Threaded |
| Tolerance | As per ASTM A450 / EN ISO 1127 |
Chemical Composition (Example Grades)
| Grade | Cr (%) | Ni (%) | Mo (%) | C (%) | N (%) | Type |
|---|---|---|---|---|---|---|
| TP304 / 304L | 18 – 20 | 8 – 11 | - | ≤ 0.035 | - | Austenitic |
| TP316 / 316L | 16 – 18 | 10 – 14 | 2 – 3 | ≤ 0.035 | - | Austenitic |
| S32205 (Duplex) | 21 – 23 | 4.5 – 6.5 | 2.5 – 3.5 | ≤ 0.03 | 0.14 – 0.20 | Duplex |
Value-add services
1.Stainless Steel Pipe Polishing
2. Stainless Steel Pipe Beveling
3. Stainless Steel Pipe Honing & Turning
4.Heatreating & Annealing
5.Positive Material Identification (PMI)
Stainless can perform PMI testing in house for most stainless steel grades, or we can work with independent labs to complete PMI in order to meet customer specifications.
6.UT Testing
In some cases, UT testing of the stainless steel pipe may be required. We can assist you with this requirement.
If you have project requirements for ASTM A213/SA213 or ASTM A312/SA312 stainless steel pipe, please feel free to place an order. GNEE has a large inventory of popular products for you to choose from. Available in both seamless and welded configurations, contact our factory for detailed chemical composition and free samples. We offer competitive pricing and excellent service.
Packaged in waterproof paper and steel strapping, these products meet standard export seaworthy packaging requirements and can be customized to suit various shipping methods.
