Bright Annealed TP304 TP316 Seamless Stainless Steel Tube ASTM A269 for Corrosion Resistance
Price:
USD2000-6000
MOQ:
200kg
Delivery Time:
25~40days
Brand:
Torich
Product Description
TP304 TP316 Bright Annealed Stainless Steel Tube Seamless ASTM A269
TP304 and TP316 bright annealed seamless stainless steel tubes are precision austenitic stainless tubes manufactured to ASTM A269 for general corrosion-resisting service, low-temperature service, and high-temperature service. The seamless structure provides uniform wall integrity, while the bright annealed surface offers a clean, oxide-free finish suitable for instrumentation tubing, clean fluid lines, heat-transfer connections, and high-cleanliness industrial piping.
Specification
| Item | Description |
|---|---|
| Material | Austenitic stainless steel |
| Standard | ASTM A269 / ASME SA269 |
| Main Grades | TP304, TP304L, TP316, TP316L, TP321 |
| Tube Type | Seamless, cold drawn / cold finished |
| Outside Diameter | 3.0-50.8 mm; customized sizes available |
| Wall Thickness | 0.3-3.0 mm; customized thickness available |
| Length | 1-12 m, fixed length or random length; customized |
| Tolerance Range | OD: ±0.05 mm or according to ASTM A269 / ASTM A450; WT: ±10% or project requirement |
| Straightness | ≤1.0 mm/m for precision straight tubes; tighter control available by agreement |
| Surface Condition | Bright annealed, smooth ID/OD, scale-free, oil-free optional |
| Heat Treatment | Solution annealed / bright annealed in controlled atmosphere |
| End Finish | Plain end, deburred, square cut |
| Inspection | Dimensional inspection, visual inspection, PMI, mechanical test, hardness test, eddy current or hydrostatic test as required |
Key Features
| Feature | Technical Value |
|---|---|
| Seamless tube body | No longitudinal weld seam; suitable for pressure-sensitive fluid and gas transfer lines |
| Bright annealed surface | Scale-free finish after controlled-atmosphere annealing; reduces oxide contamination and improves sealing contact |
| TP304 corrosion resistance | 18.0-20.0% Cr and 8.0-10.5% Ni for general corrosion resistance in water, air, food-grade, and mild chemical environments |
| TP316 chloride resistance | 16.0-18.0% Cr, 10.0-14.0% Ni, and 2.0-3.0% Mo; better pitting and crevice corrosion resistance than TP304 in chloride-containing media |
| Stable mechanical strength | TP304 / TP316 minimum tensile strength: 515 MPa; minimum yield strength: 205 MPa |
| Clean forming quality | Cold drawing improves dimensional control and roundness for bending, ferrule fittings, and precision assembly |
| Heat-treated delivery | Supplied in annealed condition to reduce internal stress and support consistent forming performance |
Our Advantages
| Buyer Concern | Practical Solution |
|---|---|
| Surface cleanliness for bright annealed tubing | Tubes can be supplied with bright annealed ID/OD, controlled oil residue, end caps, and protective packing to reduce contamination before installation. |
| Grade selection between TP304 and TP316 | TP304 is recommended for clean water, food-contact equipment, and general corrosion service; TP316 is recommended when chloride exposure, marine atmosphere, or chemical cleaning is involved. |
| Dimensional stability for fittings and bending | OD, wall thickness, ovality, and straightness can be controlled for compression fittings, orbital welding, and small-radius tube bending. Inspection records can include MTC, PMI, hardness, and eddy current test reports. |
Execution Standards
| Standard System | Applicable Standard | Short Description |
|---|---|---|
| ASTM / ASME | ASTM A269 / ASME SA269 | Seamless and welded austenitic stainless steel tubing for general service |
| ASTM | ASTM A450 / A450M | General requirements for carbon, ferritic alloy, and austenitic alloy steel tubes |
| EN | EN 10216-5 | Seamless stainless steel tubes for pressure purposes |
| EN | EN 10217-7 | Welded stainless steel tubes for pressure purposes |
| JIS | JIS G3459 | Stainless steel pipes for corrosion resistance, low-temperature, and high-temperature service |
| GB | GB/T 14976 | Seamless stainless steel tubes for fluid transport |
| GOST | GOST 9941 | Cold- and warm-deformed seamless corrosion-resistant steel tubes |
Application Field
Instrumentation tubing for chemical dosing skids: TP316 bright annealed seamless stainless steel tube is suitable for chemical dosing lines where clean internal surfaces, reliable ferrule sealing, chloride resistance, and stable bending performance are required.
Chemical Composition
| Grade | UNS | C max | Mn max | P max | S max | Si max | Cr | Ni | Mo | Ti / N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.0-20.0 | 8.0-10.5 | -- | N ≤0.10 | Balance |
| TP304L | S30403 | 0.03 | 2.00 | 0.045 | 0.030 | 0.75 | 18.0-20.0 | 8.0-12.0 | -- | N ≤0.10 | Balance |
| TP316 | S31600 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | N ≤0.10 | Balance |
| TP316L | S31603 | 0.03 | 2.00 | 0.045 | 0.030 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | N ≤0.10 | Balance |
| TP321 | S32100 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 17.0-19.0 | 9.0-12.0 | -- | Ti: 5 × C min to 0.70 max; N ≤0.10 | Balance |
Mechanical Properties
| Grade | Tensile Strength min | Yield Strength min, 0.2% offset | Elongation min | Hardness max | Delivery Condition |
|---|---|---|---|---|---|
| TP304 | 515 MPa / 75 ksi | 205 MPa / 30 ksi | 35% | HRB 90 | Annealed / bright annealed |
| TP304L | 485 MPa / 70 ksi | 170 MPa / 25 ksi | 35% | HRB 90 | Annealed / bright annealed |
| TP316 | 515 MPa / 75 ksi | 205 MPa / 30 ksi | 35% | HRB 90 | Annealed / bright annealed |
| TP316L | 485 MPa / 70 ksi | 170 MPa / 25 ksi | 35% | HRB 90 | Annealed / bright annealed |
| TP321 | 515 MPa / 75 ksi | 205 MPa / 30 ksi | 35% | HRB 90 | Annealed / bright annealed |
Frequently Asked Questions
Are you trading company or manufacturer?
Manufacturer, also can do trading.
How long is your delivery time?
Generally speaking, it is 10-15 days if the goods are in stock, or it is 30-40 days if the goods are not in stock, it is according to quantity.
Do you provide samples? Is it free or extra?
Yes, we could offer the sample for free charge but need pay the cost of freight.
What is your terms of payment?
Payment ≤ 2000 USD, 100% in advance. Payment ≥ 2000 USD, 30% T/T in advance, balance before shipment. If you have another question, please feel free to contact with me.
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Company
TORICH INTERNATIONAL LIMITED
Location
Suite 1604-3, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
Contact Person
Richard SHEN