321 Seamless Steel Square Tube
SA 213 specifies heat exchanger tube products in different material grades, including ferritic and austenitic steels. The presence of titanium in the SA213 Tp321 material reduces the density of ASME SA213 Tp321, making it lighter in weight.
Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of 321 seamless steel square tube in China, also supports customized service with low price. Welcome to wholesale discount 321 seamless steel square tube for sale here from our factory. Contact us for free sample.
321 Seamless Steel Tube
321 Seamless Square Tube
321 stainless steel is a Ni-Cr-Ti type austenitic stainless steel. Its performance is very similar to that of 304. However, due to the addition of metallic titanium, it has better resistance to grain boundary corrosion and high-temperature strength, and allows it to be effectively controlled. The formation of chromium carbide.
Products Description
|
Product Name |
321 Steel Square Tube |
|
Length |
1-12 m(All Sizes Can be customized) |
|
Out Diameter |
6mm-2500mm |
|
Thickness |
1mm-150mm |
|
Standard |
AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc |
|
Surface Treatment |
Polishing, annealing, pickling, bright
1. PVC, Black and color painting |
|
Thickness Tolerance |
±0.01mm |
|
Container Size |
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM |
|
Material |
201,202,301,302,302HQ,303,304,304L,304F,309,310,310s,314,314l,316,316L,316Ti,316F,317,317l,321,409L,410,410S,416,420,420J1,420JS
430,430F,431,2205,2507 etc. |
|
Application |
It is widely used in high-temperature applications, medical devices, building materials, chemistry, food industry, agriculture, and ship components. |
|
MOQ |
1 ton, We can accept sample orders. |
|
Shipment Time |
Within 7-15 workdays after receiving deposit |
|
Export Packing |
Waterproof paper and steel strip packed. |
|
Capacity |
25000 tons/month |
321 Seamless Steel Square Pipe
Mechanical Properties of 321 Stainless Steel Pipes
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
| 321H | 515 | 205 | 40 | 95 | 217 |
| 347 | 515 | 205 | 40 | 92 | 201 |
Composition of 321 Stainless Steel Pipe
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
| 321 | min. max |
- 0.08 |
2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 |
- | 9.0 12.0 |
0.10 | Ti=5(C+N) 0.70 |
| 321H | min. max |
0.04 0.10 |
2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 |
- | 9.0 12.0 |
- | Ti=4(C+N) 0.70 |
| 347 | min. max |
0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 |
- | 9.0 13.0 |
- | Nb=10(C+N) 1.0 |
After-Sales Services
1. Product inquiries: Our dedicated customer service team can address any questions or concerns related to the quality of 321 seamless steel square tubes. Whether you have questions about material properties, performance, or installation, our experts will provide you with accurate and timely information.
2. Technical Support: If there are any quality issues or problems with the product, our technical support team will guide you through the troubleshooting steps and provide a solution. Our goal is to help you identify the root cause of the problem and find an effective remedy.
3. Warranty scope: We guarantee the quality of our products. If a 321 seamless steel square tube has a manufacturing defect that affects its performance or structural integrity, our warranty covers the necessary repair or replacement. The specific terms and conditions of the warranty will be outlined in the warranty documentation that comes with the product.
4. Inspection and evaluation: If a quality problem occurs, our team may inspect and evaluate the product to determine the nature and extent of the problem. This helps us provide you with accurate advice on how to solve the problem.
Company Factory
Company Certification
Pipe Inspection
Packaging and shipping
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