Stainless Steel 304 Square Tube Manufacturers

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.

SS 304 Square Tube, SS 304 Square Tube Weight Chart, SS 304 Square Tube Price in Chennai, SS 304 Square Tube Sizes, SS 304 Square Tube Dimensions, SS 304 Square Tube Weight Per Meter, 304 Stainless Steel Square Tubing Supplier, SS 304 Square Tube Price in India

What is Stainless Steel Seamless 304 Tube?

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.

Key Features of Stainless Steel 304 Square Tubing

Key Benefits of 304 Stainless Steel Square Tubing

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.

    • Excellent corrosion and oxidation resistance: With high resistance to rust and oxidation, 304 stainless steel square tubing performs well in harsh and moist environments.
    • High structural strength with uniform square dimensions: This tubing offers reliable load-bearing strength with consistent geometry for stable structural applications.
    • Smooth surface finish for clean aesthetics and easy fabrication: The polished surface improves appearance and simplifies cleaning, making it great for architectural and sanitary use.
    • Superior weldability and machinability for custom solutions: SS 304 square tube allows easy welding, cutting, and forming, enabling customized fittings and assemblies.
    • Long-lasting with minimal maintenance required: The durability of stainless steel square tube ensures minimal wear and long-term service life with little upkeep.
    • Meets ASTM A554 and ASTM A312 specifications: By following industry standard specifications, it guarantees consistent performance and quality control.

304 vs 316 Stainless Steel Square Tubing

  • Chloride Resistance – Because of its molybdenum content, 316 stainless steel square tube performs better than 304 when it comes to chloride resistance, providing better protection in saltwater, coastal and de-icing salt conditions. On the other hand, SS 304 square tube works well in general-purpose, less aggressive settings with low levels of chlorides.
  • Cost Difference – For standard projects 304 stainless steel square tubing is the preferred option due to its greater affordability and accessibility. The additional molybdenum in 316 makes it more costly but in extremely corrosive environment the investment is justified.
  • Typical Applications – 304 stainless steel square tube is ideal for furniture, frames, railings and architectural structures. 316 stainless steel square tube is suited for demanding environment such as pharmaceutical production, chemical processing and marine construction.
  • Maintenance Needs – With use, 316 stainless steel requires less maintenance while maintaining its strength and finish in highly corrosive or chloride-rich environments. 304 square tubing performs well in cleaner, controlled conditions but may need more frequent maintennce in harsh climates.

Availability & Workability – 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.

Most Common Types of SS 304 Square Tube

ss-rect

SS 304 Square Tube Mirror Finished

A554 316L Stainless Steel Square Tube

A554 Stainless Steel 304 Square Tube

square

SS 304 Welded Square Tube

square

SS 304 Polished Square Tube

SS 304 Square Tube Specifications

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 Range1/2″ OD – 12″ OD, Guage: 25 SWG – 10 SWG
Outer Diameter 3.00 mm – 219.10 mm
Wall Thickness0.40 mm – 12.70 mm
Schedules5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH
LengthUpto 30 meters, Custom Cut Lengths
SpecificationsASTM A213 / ASTM SA213
TypesRound, Square, Rectangle, Coil, “U” Shape, Hydraulic & Honed Tubes
SS 304 Square Tube Price, SS 304 Square Tube Sizes, SS 304 Square Tube Dimensions, SS 304 Square Tube Weight Per Meter, SS 304 Square Tube Price in India

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.

GradeUNSCMnPSSiCrNi
SS 304S304000.08 max2.00 max0.045 max0.030 max1.00 max18.0 – 20.08.0 – 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.

MaterialHeat TreatmentTemperature (ΒΊF/ΒΊC)Tensile Strength Ksi (MPa), Min.Yield Strength Ksi (MPa), Min.Elongation %, Min
Β Β Β Β 
SS 304 Square TubeSolution1900 (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.

GradeUNSOld British (BS)Euronorm (EN)Swedish (SS)Japanese (JIS)
SS 304Β S30400304S15 / 304S16 / 304S311.43012332SUS 304

Contact Neeka tubes today for a best offer & competitive quotation Of SS 304 Square Tube
Please Call on +91 7700067892 or drop an E-Mail : sales@neekatubes.net

SS 304 Square Tube Dimension in MM

Square Tubing SizeSquare Tube ThicknessSquare Tubing Kg / Metre
20 X 2021.11 Square Tube
25 X 2521.43 Square Tube
25 X 252.51.74 Square Tube
25 X 2532.04 Square Tube
30 X 3021.74 Square Tube
30 X 302.52.14 Square Tubes
30 X 3032.51 Square Tubes
30 X 303.22.65 Square Tubes
40 X 4022.37 Square Tubes
40 X 402.52.92 Square Tubes
40 X 4033.45 Square Tubes
40 X 4044.46 Square Tubes
40 X 4055.40 Square Tubes
50 X 5023.00 Square Tubes
50 X 502.53.71 Square Tubes
50 X 5034.39 Square Tubes
50 X 5045.72 Square Tubes
50 X 5056.97 Tubes
50 X 5068.20 Square Tubes
50 X 50810.50 Square Tubes
60 X 6035.34 Tubes
60 X 603.25.67 Square Tubes
60 X 603.66.34 Tubes
60 X 6046.97 Tubing
60 X 6058.54 Tubing
70 X 702.55.28 Tubing
70 X 7036.28 Tubing
70 X 703.57.25 Tubing
70 X 703.67.46 Tubing
70 X 7048.23 Tubing
70 X 70510.10 Tubing
70 X 70815.29 Tubing
70 X 701019.13 Tubing
80 X 8037.22 Tubing
80 X 803.58.35 Tubing
80 X 803.68.59 Tubing
80 X 8049.48 Tubing
80 X 80511.70 Tubing
80 X 80613.80 Tubing
80 X 806.314.40 Tubing
80 X 80817.83 Tubing
80 X 801021.88 Tubing
90 X 9038.16 Tubing
90 X 903.59.45 Tubing
90 X 903.69.72 Tubing
90 X 90410.70 Tubing
90 X 90513.30 Tubing
90 X 90615.70 Tubing
90 X 906.316.40 Tubing
90 X 90820.32 Tubing
90 X 901025.53 Tubing
100 X 10039.10 Tubing
100 X 100412.00 Tubing
100 X 100514.80 Tubing
100 X 100617.60 Tubing
100 X 1006.318.40 Tubing
100 X 100822.90 Tubes
100 X 1001027.86 Tubes
100 X 1001233.44 Tubes
120 X 120414.50 Tubes
120 X 120518.00 Tubes
120 X 120621.30 Tubes
120 X 1206.322.30 Tubes
120 X 120827.90 Tubes
120 X 1201034.13 Tubes
120 X 1201239.94 Tubes
120 X 1201654.64 Tubes
140 X 140625.97 Tubes
140 X 140832.89 Tubes
140 X 1401041.15 Tubes
150 X 150418.30 Tubes
150 X 150522.70 Tubes
150 X 150627.00 Tubes
150 X 1506.328.30 Tubes
150 X 150835.40 Tubes
150 X 1501043.47 Tubes
150 X 1501253.48 Tubes
150 X 1501665.05 Tubes
160 X 160627.39 Tubes
160 X 160836.90 Tubes
160 X 1601046.88 Tubes
180 X 180527.97 Tubes
180 X 180633.26 Tubes
180 X 180843.00 Tubes
180 X 1801053.00 Tubes
180 X 1801261.01 Tubes
180 X 18012.565.20 Tubes
180 X 1801681.30 Tubes
200 X 200531.18 Tubing
200 X 200637.09 Tubing
200 X 200848.00 Tubing
200 X 2001059.30 Tubing
200 X 2001268.84 Tubing
200 X 20012.573.00 Tubing
200 X 2001690.91 Tubing
250 X 250646.83 Tubing
250 X 250860.50 Tubing
250 X 2501075.00 Tubing
250 X 2501288.45 Tubing
250 X 25012.592.70 Tubing
250 X 25016111.48 Tubing
300 X 300655.30 Tubing
300 X 300874.18 Tubing
300 X 3001090.70 Tubing
300 X 30012108.68 Tubing
300 X 30012.5112.00 Tubing
300 X 30016141.84 Tubing
350 X 35010105.93 Tubing
350 X 35012126.74 Tubing
350 X 35016166.94 Tubing
400 X 400897.56 Tubing
400 X 40010121.95 Tubing
400 X 40012151.97 Tubing
400 X 40016191.94 Tubing Kg / Metr

SS 304 Square Tube Thickness Chart

AVE. WALL INCHESMIN YIELD STRENGTH (PSI)MIN TENSILE STRENGTH (PSI)THEORETICAL BURST PRESSURE * (PSI)WORKING PRESSURE (PSI) 25% OF BURSTTHEORETICAL YIELD POINT ** (PSI)COLLAPSE PRESSURE *** (PSI)
0.2500.02030,00075,00014,2863,5715,7144,416
0.2500.02830,00075,00021,6495,4128,6605,967
0.2500.03530,00075,00029,1677,29211,6677,224
0.2500.04930,00075,00048,35512,08919,3429,455
0.2500.06530,00075,00081,25020,31332,50011,544
0.3750.02030,00075,0008,9552,2393,5823,029
0.3750.02830,00075,00013,1663,2925,2664,145
0.3750.03530,00075,00017,2134,3036,8855,077
0.3750.04930,00075,00026,5346,63410,6146,816
0.3750.06530,00075,00039,7969,94915,9188,597
0.5000.02030,00075,0006,5221,6302,6092,304
0.5000.02830,00075,0009,4592,3653,7843,172
0.5000.03530,00075,00012,2093,0524,8843,906
0.5000.04930,00075,00018,2844,5717,3135,304
0.5000.06530,00075,00026,3516,58810,5416,786
0.5000.08330,00075,00037,2759,31914,9108,307
0.6250.02030,00075,0005,1281,2822,0511,859
0.6250.02830,00075,0007,3811,8452,9532,568
0.6250.03530,00075,0009,4592,3653,7843,172
0.6250.04930,00075,00013,9473,4875,5794,335
0.6250.06530,00075,00019,6974,9247,8795,591
0.6250.08330,00075,00027,1246,78110,8506,910
0.6250.09530,00075,00032,7598,19013,1037,734
0.6250.10930,00075,00040,17210,04316,0698,639
0.7500.02830,00075,0006,0521,5132,4212,156
0.7500.03530,00075,0007,7211,9303,0882,669
0.7500.04930,00075,00011,2732,8184,5093,664
0.7500.06530,00075,00015,7263,9316,2904,749
0.7500.08330,00075,00021,3185,3308,5275,905
0.7500.09530,00075,00025,4466,36210,1796,637
0.7500.10930,00075,00030,7337,68312,2937,453
0.7500.12030,00075,00035,2948,82414,1188,064
0.8750.02030,00075,0003,5938981,4371,340
0.8750.02830,00075,0005,1281,2822,0511,859
0.8750.03530,00075,0006,5221,6302,6092,304
0.04930,00075,0009,4592,3653,7843,172
0.8750.06530,00075,00013,0873,2725,2354,126
0.8750.08330,00075,00017,5604,3907,0245,152
0.8750.09530,00075,00020,8035,2018,3215,807
0.8750.10930,00075,00024,8866,2219,9546,543
0.8750.12030,00075,00028,3467,08711,3397,100
1.0000.02830,00075,0004,4491,1121,7801,633
1.0000.03530,00075,0005,6451,4112,2582,027
1.0000.04930,00075,0008,1492,0373,2592,796
1.0000.06530,00075,00011,2072,8024,4833,647
1.0000.08330,00075,00014,9283,7325,9714,567
1.0000.09530,00075,00017,5934,3987,0375,159
1.0000.10930,00075,00020,9085,2278,3635,827
1.0000.12030,00075,00023,6845,9219,4746,336
1.0000.13430,00075,00027,4596,86510,9846,963
1.2500.03530,00075,0004,4491,1121,7801,633
1.2500.04930,00075,0006,3801,5952,5522,260

Surface Finishes & Fabrication Options

304 stainless steel square tube finishes and fabrication choices allow customization for aesthetic appeal, performance, and specific project requirements.

  • Popular Surface Finishes – Each 304 stainless steel square tube finishes like 2B (mill finish), No. 4 (brushed finish stainless steel tube), BA (bright annealed), and mirror finish SS 304 square tube offers special aesthetic and practical advantages.
  • Polishing Levels – Options range from 180–320 grit for a smooth, reflective SS 304 square tube polish, enhancing both appearance and corrosion resistance.
  • Finish Impact – Surface finish influences durability, ease of cleaning, and visual appeal, making it important for hygiene-critical or design-focused projects.
  • Fabrication Services – To meet particular specifications custom stainless steel square tubing is made by cut-to-length, precision laser cutting, bending, punching and welding.
  • Indoor vs. Outdoor Suitability – Brushed or matte finishes are preferred for indoor decorative use, while polished or mirror finishes perform well in outdoor or corrosive environments.
  • Custom Sizing – Tubes can be manufactered in tailored dimensions, thicknesses, and finishes to meet varied architectural and industrial applications.

Packaging & Delivery of 304 Square Tubing

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.

  • To guarantee constant product excellence we use ISO-certified procedures and adhere to stringent quality standards.
  • Each SS 304 square tube is fully traceable with Mill Test Certificates and documented heat numbers.
  • We maintain ready inventory of 304 stainless steel square tubing in various sizes, thicknesses, and finishes.
  • All tubes go through detailed quality checks for dimensions, finish, and strength to meet ASTM standards.
  • We supply custom-cut lengths and large volume orders tailored to meet unique project needs.

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Applications of 304 Stainless Steel Square Tubing

304 stainless steel square tubing has numerous structural, ornamental, and industrial applications in a variety of industries.

    • Construction & Architecture – Extensively used as stainless steel square tube for construction in frameworks, building facades, handrails, and load-bearing structures where both strength and aesthetics are important.
    • Furniture & Interior Design – Chosen to build modern furniture, shelving units, and decorative elements, offering a polished look with long-lasting performance.
    • Industrial Equipment – Frequently used in conveyors, support systems and machinery frames where low maintenance, high strength and durability are crucial.
    • Railings & Safety Barriers – Perfect for public safety railings, balconies and staircases it incorporates a sleek, modern finish with safety.
    • Sanitary & Food Processing – Its non reactive, easily cleaned surface meets hygienic requirements for use in kitchens, breweries and food production.
    • Outdoor & Marine Environments – Resists rust and environmental wear and performs exceptionally well in environments that are humid, coastal or exposed to chemical.
    • Decorative & Architectural Projects – Increases the visual appeal of commercial, residential, and public installations without compromising strength.
    • Custom Fabrication – Easily available in various sizes, thicknesses, and finishes to suit specialized project requirements and design flexibility.

304 Stainless Steel Square Tubing – FAQs

What sizes are available for 304 Stainless Steel Square Tubing?

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.