Stainless Steel Square Tube
We offer Stainless Steel Square Tube and related grades with 100% factory direct pricing and free quotes available within 6 hours.
Luokaiwei’s Stainless Steel Square Tube combines exceptional strength with sleek, corrosion‑resistant styling for versatile structural and decorative applications. Precision‑rolled from high‑grade 304 and 316 stainless steel, each tube features uniform wall thickness, smooth interior surfaces, and a mirror or matte finish to meet aesthetic and performance demands. Ideal for architectural frames, furniture, railing systems, and industrial support structures, our square tubes resist rust, harsh chemicals, and high temperatures—ensuring long‑term reliability and low maintenance. Available in standard and custom dimensions, Luokaiwei’s Stainless Steel Square Tubes deliver the durability and premium quality your projects require.
Product Parameters
Product Name | 304 Stainless Steel Square Tube/ Pipe | |
Type | Steel Pipe | |
Outer diameter | Round Tube | 4mm-200mm |
Square Tube | 10*10mm-100*100mm | |
Rectangular Tube | 10*20mm-50*100mm | |
Wall Thickness | 0.6mm-6.0mm | |
Length | 1-6 meters, Length can be customized | |
Standard | ASTM, AISI, JIS, GB, DIN, EN, etc. | |
Surface | Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4. BA, etc. | |
Scope of Application | Common applications for stainless steel pipes include food processing, Textile operations, Breweries, Water treatment plants, Oil and gas processing, Fertilizers and pesticides, Chemical applications, Construction, Pharmaceuticals, Auto parts, etc. | |
Certificate | ISO, SGS, BV, etc. | |
Production Technology | Hot Rolling, Cold Rolling | |
Edge Processing | Edging, Trimming | |
Chemical Composition
C | Si | Mn | Cr | Ni | S | P |
≤ 0.08 | ≤1.0 | ≤ 2.0 | 18.0～20.0 | 8.0～10.5 | ≤ 0.03 | ≤ 0.035 |
Mechanical Properties
Tensile Strength Kb (MPa) | Yield Strength σ0.2 (MPa) | Elongation D5 (%) | Hardness |
≥ 520 | ≥ 205 | ≥ 40 | ≤ 187HB ;≤ 90HRB;≤ 200HV |
Physical Performance
Density(g/cm³) | Modulus of Elasticity(Gpa) | Coefficient of Thermal Expansion(10-6/°C) | Coefficient of Thermal Conductivity(W/m*K) | Resistivity(ΜΩ. cm) |
8.03 | 193 | 16.9 | 16.2 | 72 |
No | China | Japan | USA | South Korea | Germany | India | Australia | Taiwan, China | |
GB | JIS | ASTM | UNS | KS | DIN | BIS | AS | CNS | |
| Austenitic stainless steel | |||||||||
1 | 12Cr17Mn6Ni5N | SUS201 | 201 | S20100 | STS201 | 1.4372 | 10Cr17Mn6Ni4N20 | 201-2 | 201 |
2 | 12Cr18Mn9Ni5N | SUS202 | 202 | S20200 | STS202 | 1.4373 | - | - | 202 |
3 | 12Cr17Ni7 | SUS301 | 301 | S20200 | STS301 | 1.4319 | 10Cr17Ni7 | 301 | 301 |
4 | 06Cr19Ni10 | SUS304 | 304 | S30400 | STS304 | 1.4301 | 07Cr18Ni9 | 304 | 304 |
5 | 022Cr19Ni10 | SUS304L | 304L | S30403 | STS304L | 1.4306 | 02Cr18Ni11 | 304L | 304L |
6 | 06Cr19Ni10N | SUS304N1 | 304N | S30451 | STS304N1 | 1.4315 | - | 304N1 | 304N1 |
7 | 06Cr19Ni9NbN | SUS304N2 | XM21 | S30452 | STS304N2 | - | - | 304N2 | 304N2 |
8 | 022Cr19Ni10N | SUS304LN | 304LN | S30453 | STS304LN | - | - | 304LN | 304LN |
9 | 10Cr18Ni12 | SUS305 | 305 | S30500 | STS305 | 1.4303 | - | 305 | 305 |
10 | 06Cr23Ni13 | SUS309S | 309S | S30908 | STS309S | 1.4833 | - | 309S | 309S |
11 | 06Cr25Ni20 | SUS310S | 310S | S31008 | STS310S | 1.4845 | - | 310S | 310S |
12 | 06Cr17Ni12Mo2 | SUS316 | 316 | S31600 | STS316 | 1.4401 | 04Cr17Ni12Mo2 | 316 | 316 |
13 | 06Cr17Ni12Mo2Ti | SUS316Ti | 316Ti | S31635 | - | 1.4571 | 04Cr17Ni12MoTi20 | 316Ti | 316Ti |
14 | 022Cr17Ni12Mo2 | SUS316L | 316L | S31603 | STS316L | 1.4404 | ~02Cr17Ni12Mo2 | 316L | 316L |
15 | 06Cr17Ni12Mo2N | SUS316N | 316N | S31651 | STS316N | - | - | 316N | 316N |
16 | 022Cr17Ni13Mo2N | SUS316LN | 316LN | S31653 | STS316LN | 1.4429 | - | 316LN | 316LN |
17 | 06Cr18Ni12Mo2Cu2 | SUS316J1 | - | - | STS316J1 | - | - | 316J1 | 316J1 |
18 | 022Cr18Ni14Mo2Cu2 | SUS316J1L | - | - | STS316J1L | - | - | - | 316J1L |
19 | 06Cr19Ni13Mo3 | SUS317 | 317 | S31700 | STS317 | - | - | 317 | 317 |
20 | 022Cr19Ni13Mo3 | SUS317L | 317L | S31703 | STS317L | 1.4438 | - | 317L | 317L |
21 | 06Cr18Ni11Ti S | SUS321 | 321 | S32100 | STS321 | 1.4541 | 04Cr18Ni10Ti20 | 321 | 321 |
22 | 06Cr18Ni11Nb | SUS347 | 347 | S34700 | STS347 | 1.4550 | 04Cr18Ni10Nb40 | 347 | 347 |
| Duplex stainless steel | |||||||||
1 | - | SUS329J1 | 329 | S32900 | STS329J1 | 1.4477 | - | 329J1 | - |
2 | 022Cr23Ni5Mo3N | - | S32205 | F60 | - | 1.4462 | - | 2205 | 2205 |
3 | 022Cr25Ni7Mo4N | - | S32750 | F53 | - | 1.4410 | - | 2507 | 2507 |
| Ferritic stainless steel | |||||||||
1 | 06Crl3Al | SUS405 | 405 | S40500 | STS405 | 1.4002 | 04Cr13 | 405 | 405 |
2 | 022Cr11Ti | SUH409 | 409 | S40900 | STS409 | 1.4512 | - | 409L | 409L |
3 | 022Cr12 | SUS410L | - | - | STS410L | - | - | 410L | 410L |
4 | 10Cr17 | SUS430 | 430 | S43000 | STS430 | 1.4016 | 05Cr17 | 430 | 430 |
5 | 10Cr17Mo | SUS434 | 434 | S43400 | STS434 | 1.4113 | - | 434 | 434 |
6 | 022Cr18NbTi | - | - | S43940 | - | 1.4509 | - | 439 | 439 |
7 | 019Cr19Mo2NbTi | SUS444 | 444 | S44400 | STS444 | 1.4521 | - | 444 | 444 |
| Martensitic stainless steel | |||||||||
1 | 12Cr12 | SUS403 | 403 | S40300 | STS403 | - | - | 403 | 403 |
2 | 12Cr13 | SUS410 | 410 | S41000 | STS410 | 1.4006 | 12Cr13 | 410 | 410 |
3 | 20Cr13 | SUS420J1 | 410 | S42000 | STS420J1 | 1.4021 | 20Cr13 | 420 | 420J1 |
4 | 30Cr13 | SUS420J2 | - | - | STS420J2 | 1.4028 | 30 Cr13 | 420J2 | 420J2 |
5 | 68Cr17 | SUS440A | 440A | S44002 | STS440A | - | - | 440A | 440A |
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