Neeka Tubes is among the most reliable stainless steel 304 square tube manufacturer in India, provides precisely engineered tubing from modern facilities. As a reputable supplier of SS 304 square tube we provide product with superior strength, extended service life and resistance to corrosion. Our stainless steel square tubing finds a wide range of uses in machinery, railings, architectural structures, furniture and construction. Each tube is manufactured in accordance with ASTM A554 and ASTM A312 standards for guaranteed quality and is available in custom sizes, thicknesses and finishes. We provide stainless steel square tubing from India to customers all over the world with reliable performance and fast delivery because of to our strong export capabilities.
It is a square shaped, hollow tube composed of grade 304 stainless steel which has nickel and chromium added for increased resistance to corrosion. The seamless or welded design of SS 304 square tube makes it proper for both structural and decorative applications. Meeting ASTM A554 and ASTM A312 standards, it offers strength, durability and a clean finish. Because of the 304 square tube qualities it is frequently used for machinery parts, railings, architectural accents and frameworks, fusing practicality and aesthetic appeal in both commercial and industrial projects.
Below are the stainless steel square tube benefits because of its remarkable strength, corrosion resistance and versatility, 304 stainless steel square tubing is a reliable option for both structural and industrial projects.
Availability & Workability β Square tubing made of 304 stainless steel is easier to find and has superior forming, welding and fabrication qualities. While 316 is also workable its higher cost and specific availability can make 304 a faster and more budget-friendly option.
SS 304 Square Tube Specifications cover key details such as dimensions, wall thickness, weight, and mechanical properties as it helps choose the right size and grade for their application.
Tube Range | 1/2″ OD – 12″ OD, Guage: 25 SWG – 10 SWG |
Outer Diameter | 3.00 mm – 219.10 mm |
Wall Thickness | 0.40 mm – 12.70 mm |
Schedules | 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH |
Length | Upto 30 meters, Custom Cut Lengths |
Specifications | ASTM A213 / ASTM SA213 |
Types | Round, Square, Rectangle, Coil, “U” Shape, Hydraulic & Honed Tubes |
The chemical composition of SS 304 square tubing defines its corrosion resistance, strength and suitability for diverse environments. Its composition is brokendown in detail in the table below.
Grade | UNS | C | Mn | P | S | Si | Cr | Ni |
SS 304 | S30400 | 0.08 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 18.0 – 20.0 | 8.0 – 11.0 |
Excellent performance under structural loads, high durability and dependability in a variety of applications is provided by the mechanical characteristics of SS 304 square tubes. The table below outlines its key strength and hardness values.
Material | Heat Treatment | Temperature (ΒΊF/ΒΊC) | Tensile Strength Ksi (MPa), Min. | Yield Strength Ksi (MPa), Min. | Elongation %, Min |
Β | Β | Β | Β | ||
SS 304 Square Tube | Solution | 1900 (1040) | 75 (515) | 30 (205) | 35 |
Understanding the equivalent grades of SS 304 square tubing helps in identifying globally recognized alternatives for easy sourcing. The equivalent international standards are listed in the section below.
Grade | UNS | Old British (BS) | Euronorm (EN) | Swedish (SS) | Japanese (JIS) |
SS 304Β | S30400 | 304S15 / 304S16 / 304S31 | 1.4301 | 2332 | SUS 304 |
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Square Tubing Size | Square Tube Thickness | Square Tubing Kg / Metre |
---|---|---|
20 X 20 | 2 | 1.11 Square Tube |
25 X 25 | 2 | 1.43 Square Tube |
25 X 25 | 2.5 | 1.74 Square Tube |
25 X 25 | 3 | 2.04 Square Tube |
30 X 30 | 2 | 1.74 Square Tube |
30 X 30 | 2.5 | 2.14 Square Tubes |
30 X 30 | 3 | 2.51 Square Tubes |
30 X 30 | 3.2 | 2.65 Square Tubes |
40 X 40 | 2 | 2.37 Square Tubes |
40 X 40 | 2.5 | 2.92 Square Tubes |
40 X 40 | 3 | 3.45 Square Tubes |
40 X 40 | 4 | 4.46 Square Tubes |
40 X 40 | 5 | 5.40 Square Tubes |
50 X 50 | 2 | 3.00 Square Tubes |
50 X 50 | 2.5 | 3.71 Square Tubes |
50 X 50 | 3 | 4.39 Square Tubes |
50 X 50 | 4 | 5.72 Square Tubes |
50 X 50 | 5 | 6.97 Tubes |
50 X 50 | 6 | 8.20 Square Tubes |
50 X 50 | 8 | 10.50 Square Tubes |
60 X 60 | 3 | 5.34 Tubes |
60 X 60 | 3.2 | 5.67 Square Tubes |
60 X 60 | 3.6 | 6.34 Tubes |
60 X 60 | 4 | 6.97 Tubing |
60 X 60 | 5 | 8.54 Tubing |
70 X 70 | 2.5 | 5.28 Tubing |
70 X 70 | 3 | 6.28 Tubing |
70 X 70 | 3.5 | 7.25 Tubing |
70 X 70 | 3.6 | 7.46 Tubing |
70 X 70 | 4 | 8.23 Tubing |
70 X 70 | 5 | 10.10 Tubing |
70 X 70 | 8 | 15.29 Tubing |
70 X 70 | 10 | 19.13 Tubing |
80 X 80 | 3 | 7.22 Tubing |
80 X 80 | 3.5 | 8.35 Tubing |
80 X 80 | 3.6 | 8.59 Tubing |
80 X 80 | 4 | 9.48 Tubing |
80 X 80 | 5 | 11.70 Tubing |
80 X 80 | 6 | 13.80 Tubing |
80 X 80 | 6.3 | 14.40 Tubing |
80 X 80 | 8 | 17.83 Tubing |
80 X 80 | 10 | 21.88 Tubing |
90 X 90 | 3 | 8.16 Tubing |
90 X 90 | 3.5 | 9.45 Tubing |
90 X 90 | 3.6 | 9.72 Tubing |
90 X 90 | 4 | 10.70 Tubing |
90 X 90 | 5 | 13.30 Tubing |
90 X 90 | 6 | 15.70 Tubing |
90 X 90 | 6.3 | 16.40 Tubing |
90 X 90 | 8 | 20.32 Tubing |
90 X 90 | 10 | 25.53 Tubing |
100 X 100 | 3 | 9.10 Tubing |
100 X 100 | 4 | 12.00 Tubing |
100 X 100 | 5 | 14.80 Tubing |
100 X 100 | 6 | 17.60 Tubing |
100 X 100 | 6.3 | 18.40 Tubing |
100 X 100 | 8 | 22.90 Tubes |
100 X 100 | 10 | 27.86 Tubes |
100 X 100 | 12 | 33.44 Tubes |
120 X 120 | 4 | 14.50 Tubes |
120 X 120 | 5 | 18.00 Tubes |
120 X 120 | 6 | 21.30 Tubes |
120 X 120 | 6.3 | 22.30 Tubes |
120 X 120 | 8 | 27.90 Tubes |
120 X 120 | 10 | 34.13 Tubes |
120 X 120 | 12 | 39.94 Tubes |
120 X 120 | 16 | 54.64 Tubes |
140 X 140 | 6 | 25.97 Tubes |
140 X 140 | 8 | 32.89 Tubes |
140 X 140 | 10 | 41.15 Tubes |
150 X 150 | 4 | 18.30 Tubes |
150 X 150 | 5 | 22.70 Tubes |
150 X 150 | 6 | 27.00 Tubes |
150 X 150 | 6.3 | 28.30 Tubes |
150 X 150 | 8 | 35.40 Tubes |
150 X 150 | 10 | 43.47 Tubes |
150 X 150 | 12 | 53.48 Tubes |
150 X 150 | 16 | 65.05 Tubes |
160 X 160 | 6 | 27.39 Tubes |
160 X 160 | 8 | 36.90 Tubes |
160 X 160 | 10 | 46.88 Tubes |
180 X 180 | 5 | 27.97 Tubes |
180 X 180 | 6 | 33.26 Tubes |
180 X 180 | 8 | 43.00 Tubes |
180 X 180 | 10 | 53.00 Tubes |
180 X 180 | 12 | 61.01 Tubes |
180 X 180 | 12.5 | 65.20 Tubes |
180 X 180 | 16 | 81.30 Tubes |
200 X 200 | 5 | 31.18 Tubing |
200 X 200 | 6 | 37.09 Tubing |
200 X 200 | 8 | 48.00 Tubing |
200 X 200 | 10 | 59.30 Tubing |
200 X 200 | 12 | 68.84 Tubing |
200 X 200 | 12.5 | 73.00 Tubing |
200 X 200 | 16 | 90.91 Tubing |
250 X 250 | 6 | 46.83 Tubing |
250 X 250 | 8 | 60.50 Tubing |
250 X 250 | 10 | 75.00 Tubing |
250 X 250 | 12 | 88.45 Tubing |
250 X 250 | 12.5 | 92.70 Tubing |
250 X 250 | 16 | 111.48 Tubing |
300 X 300 | 6 | 55.30 Tubing |
300 X 300 | 8 | 74.18 Tubing |
300 X 300 | 10 | 90.70 Tubing |
300 X 300 | 12 | 108.68 Tubing |
300 X 300 | 12.5 | 112.00 Tubing |
300 X 300 | 16 | 141.84 Tubing |
350 X 350 | 10 | 105.93 Tubing |
350 X 350 | 12 | 126.74 Tubing |
350 X 350 | 16 | 166.94 Tubing |
400 X 400 | 8 | 97.56 Tubing |
400 X 400 | 10 | 121.95 Tubing |
400 X 400 | 12 | 151.97 Tubing |
400 X 400 | 16 | 191.94 Tubing Kg / Metr |
AVE. WALL INCHES | MIN YIELD STRENGTH (PSI) | MIN TENSILE STRENGTH (PSI) | THEORETICAL BURST PRESSURE * (PSI) | WORKING PRESSURE (PSI) 25% OF BURST | THEORETICAL YIELD POINT ** (PSI) | COLLAPSE PRESSURE *** (PSI) | |
---|---|---|---|---|---|---|---|
0.250 | 0.020 | 30,000 | 75,000 | 14,286 | 3,571 | 5,714 | 4,416 |
0.250 | 0.028 | 30,000 | 75,000 | 21,649 | 5,412 | 8,660 | 5,967 |
0.250 | 0.035 | 30,000 | 75,000 | 29,167 | 7,292 | 11,667 | 7,224 |
0.250 | 0.049 | 30,000 | 75,000 | 48,355 | 12,089 | 19,342 | 9,455 |
0.250 | 0.065 | 30,000 | 75,000 | 81,250 | 20,313 | 32,500 | 11,544 |
0.375 | 0.020 | 30,000 | 75,000 | 8,955 | 2,239 | 3,582 | 3,029 |
0.375 | 0.028 | 30,000 | 75,000 | 13,166 | 3,292 | 5,266 | 4,145 |
0.375 | 0.035 | 30,000 | 75,000 | 17,213 | 4,303 | 6,885 | 5,077 |
0.375 | 0.049 | 30,000 | 75,000 | 26,534 | 6,634 | 10,614 | 6,816 |
0.375 | 0.065 | 30,000 | 75,000 | 39,796 | 9,949 | 15,918 | 8,597 |
0.500 | 0.020 | 30,000 | 75,000 | 6,522 | 1,630 | 2,609 | 2,304 |
0.500 | 0.028 | 30,000 | 75,000 | 9,459 | 2,365 | 3,784 | 3,172 |
0.500 | 0.035 | 30,000 | 75,000 | 12,209 | 3,052 | 4,884 | 3,906 |
0.500 | 0.049 | 30,000 | 75,000 | 18,284 | 4,571 | 7,313 | 5,304 |
0.500 | 0.065 | 30,000 | 75,000 | 26,351 | 6,588 | 10,541 | 6,786 |
0.500 | 0.083 | 30,000 | 75,000 | 37,275 | 9,319 | 14,910 | 8,307 |
0.625 | 0.020 | 30,000 | 75,000 | 5,128 | 1,282 | 2,051 | 1,859 |
0.625 | 0.028 | 30,000 | 75,000 | 7,381 | 1,845 | 2,953 | 2,568 |
0.625 | 0.035 | 30,000 | 75,000 | 9,459 | 2,365 | 3,784 | 3,172 |
0.625 | 0.049 | 30,000 | 75,000 | 13,947 | 3,487 | 5,579 | 4,335 |
0.625 | 0.065 | 30,000 | 75,000 | 19,697 | 4,924 | 7,879 | 5,591 |
0.625 | 0.083 | 30,000 | 75,000 | 27,124 | 6,781 | 10,850 | 6,910 |
0.625 | 0.095 | 30,000 | 75,000 | 32,759 | 8,190 | 13,103 | 7,734 |
0.625 | 0.109 | 30,000 | 75,000 | 40,172 | 10,043 | 16,069 | 8,639 |
0.750 | 0.028 | 30,000 | 75,000 | 6,052 | 1,513 | 2,421 | 2,156 |
0.750 | 0.035 | 30,000 | 75,000 | 7,721 | 1,930 | 3,088 | 2,669 |
0.750 | 0.049 | 30,000 | 75,000 | 11,273 | 2,818 | 4,509 | 3,664 |
0.750 | 0.065 | 30,000 | 75,000 | 15,726 | 3,931 | 6,290 | 4,749 |
0.750 | 0.083 | 30,000 | 75,000 | 21,318 | 5,330 | 8,527 | 5,905 |
0.750 | 0.095 | 30,000 | 75,000 | 25,446 | 6,362 | 10,179 | 6,637 |
0.750 | 0.109 | 30,000 | 75,000 | 30,733 | 7,683 | 12,293 | 7,453 |
0.750 | 0.120 | 30,000 | 75,000 | 35,294 | 8,824 | 14,118 | 8,064 |
0.875 | 0.020 | 30,000 | 75,000 | 3,593 | 898 | 1,437 | 1,340 |
0.875 | 0.028 | 30,000 | 75,000 | 5,128 | 1,282 | 2,051 | 1,859 |
0.875 | 0.035 | 30,000 | 75,000 | 6,522 | 1,630 | 2,609 | 2,304 |
0.049 | 30,000 | 75,000 | 9,459 | 2,365 | 3,784 | 3,172 | |
0.875 | 0.065 | 30,000 | 75,000 | 13,087 | 3,272 | 5,235 | 4,126 |
0.875 | 0.083 | 30,000 | 75,000 | 17,560 | 4,390 | 7,024 | 5,152 |
0.875 | 0.095 | 30,000 | 75,000 | 20,803 | 5,201 | 8,321 | 5,807 |
0.875 | 0.109 | 30,000 | 75,000 | 24,886 | 6,221 | 9,954 | 6,543 |
0.875 | 0.120 | 30,000 | 75,000 | 28,346 | 7,087 | 11,339 | 7,100 |
1.000 | 0.028 | 30,000 | 75,000 | 4,449 | 1,112 | 1,780 | 1,633 |
1.000 | 0.035 | 30,000 | 75,000 | 5,645 | 1,411 | 2,258 | 2,027 |
1.000 | 0.049 | 30,000 | 75,000 | 8,149 | 2,037 | 3,259 | 2,796 |
1.000 | 0.065 | 30,000 | 75,000 | 11,207 | 2,802 | 4,483 | 3,647 |
1.000 | 0.083 | 30,000 | 75,000 | 14,928 | 3,732 | 5,971 | 4,567 |
1.000 | 0.095 | 30,000 | 75,000 | 17,593 | 4,398 | 7,037 | 5,159 |
1.000 | 0.109 | 30,000 | 75,000 | 20,908 | 5,227 | 8,363 | 5,827 |
1.000 | 0.120 | 30,000 | 75,000 | 23,684 | 5,921 | 9,474 | 6,336 |
1.000 | 0.134 | 30,000 | 75,000 | 27,459 | 6,865 | 10,984 | 6,963 |
1.250 | 0.035 | 30,000 | 75,000 | 4,449 | 1,112 | 1,780 | 1,633 |
1.250 | 0.049 | 30,000 | 75,000 | 6,380 | 1,595 | 2,552 | 2,260 |
304 stainless steel square tube finishes and fabrication choices allow customization for aesthetic appeal, performance, and specific project requirements.
Neeka Tubes makes sure that 304 square tube solutions are packed safely and effectively to preserve product quality while in transit. Sturdy wooden cases, plastic film wrapping and an optional anti-rust coating for extra protection are all part of our export-standard square tube delivery procedure. Each tube is clearly labeled with size, grade, and heat number for complete traceability. Secure strapping and proper container loading methods are used to prevent movement or damage during transportation. We take special care in handling to minimize the risk of dents or surface scratches. Depending on client requirement orders can be shipped by air, sea or road with clear lead time commitment to ensure timely delivery. Every 304 square tube is carefully packed all our product will arrive at your location in perfect condition.
Testing & Certifications for 304 Square Tubing
We follow strict quality control measures to ensure every product meet global standards providing complete 304 stainless tube certification for customer assurance. Our 304 stainless steel square tubing is manufactured following ASTM A554 compliance standards supported by a Mill Test Certificate (MTC) that lists its mechanical and chemical characteristic. To ensure integrity and performance, each tube is subjected to hydrostatic testing, visual inspection, and dimensional checks. For quality tracking, complete traceability documentation is kept up to date including batch records and heat numbers. These certifications and inspections guarantee that our products deliver consistent reliability, safety, and compliance for structural, architectural, and industrial applications.
Why Choose Neeka Tubes for 304 SS Square Tube?
We offer consistent quality, reliable service, and fast delivery of 304 Stainless Steel Square Tubing.
304 stainless steel square tubing has numerous structural, ornamental, and industrial applications in a variety of industries.
It comes in a variety of sizes, typically ranging from 12 x 12 mm to 200 x 200 mm, and thicknesses ranging from 1 to 6 mm. On request, custom sizes can also be produced.
Even though 304 stainless steel resists corrosion very well it is not totally resistant to rust. 316 stainless steel might provide superior protection in extremely harsh or chloride-rich environments, like coastal areas.
Can 304 Stainless Steel Square Tubing be used outdoors?
Yes, because of its resistance to corrosion it works well outdoors and is appropriate for structural frameworks, gates, railings and fencing.
Simply give it a quick wash with water and mild soap, then rinse and pat dry. Use a vinegar solution or stainless steel cleaner for tough stains. Steer clear of rough abrasives that might scratch the surface.
Yes, it offers excellent weldability using TIG, MIG, or spot welding techniques without the need for pre-heating.
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