Stainless Square Welded Tubes
Produced to Spec ASTM A554 Mechanical Tubing are mainly produced in Grades 304, 304L, 316, 316L. Lean Duplex e.g W-nr 1.4162 can be produced and supplied subject to prior arrangements. Some of the applications of these square & rectangular sections goes into are, the construction industry, food & beverage, building & renovations, process machinery, offshore & marine industries, transport, architectural. Stainless corrosion resistance/self-healing properties, aesthetic elegance, hygienic features combined with higher strength with fire resistance compared to carbon steel, low maintenance, 100% recyclable, surface finish options, low temperature toughness, cold formability and long life cycle provides further advantage in all types of structures or applications.
Sizes: 10 x 10 mm - 300 x 300 mm square. Thickness up to 6.0 mm.
Delivery: 30 - 90 Days Ex Mill Production. Specific/shorter lead-timings can be arranged - Refer sales office.
Supplied: In 6 m Length. Custom produced/cut lengths supplied (save costs). Refer sales office. Supply available from reputable mills in Asia & Europe.
European Product - Available from size: 25 x 25 x 1.2mm - 300 x 300 x 12.5 mm Thick.
(TIG & TIG/Plasma & Laser welding method applied. Value added services such as precision cutting, laser cutting, perforating, polishing, bending and pickling provided).
| Mechanical & Structural Stainless Steel Tubes ■ASTM A554 ■ JIS G3446 ■CNS G3119 | |||||||||||||||||||||||||||||
| ■SURFACE FINISH: 2-B, MF, Polished 180 Grit (Hairline), 220#, 240#, 320#, 400#, 600#. Other Finishes-Refer Sales Office | |||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
| Th | 厚度Thickness/Tebal | ||||||||||||||||||||||||||||
| Outside Dim | |||||||||||||||||||||||||||||
| in | mm | 0.7 | 0.8 | 0.9 | 1.0 | 1.2 1.25 |
1.5 | 1.6 1.65 |
2.0 2.11 |
2.5 | 3.0 3.05 |
4.0 | 5.0 | 6.0 | |||||||||||||||
| 10.0 X 10.0 | |||||||||||||||||||||||||||||
| 1/2" X 1/2" | 12.7 X 12.7 | ||||||||||||||||||||||||||||
| 15.0 X 15.0 | |||||||||||||||||||||||||||||
| 3/4" X 3/4" | 19.0 X 19.0 | ||||||||||||||||||||||||||||
| 20.0 X 20.0 | |||||||||||||||||||||||||||||
| 7/8" X 7/8" | 22.2 X 22.2 | ||||||||||||||||||||||||||||
| *25.0 X 25.0 | |||||||||||||||||||||||||||||
| 1" X 1" | 25.4 X 25.4 | ||||||||||||||||||||||||||||
| *30.0 X 30.0 | |||||||||||||||||||||||||||||
| 1 1/4" X 1 1/4" | *31.8 X 31.8 | ||||||||||||||||||||||||||||
| 1 1/2" X 1 1/2" | *38.1 X 38.1 | ||||||||||||||||||||||||||||
| *40.0 X 40.0 | |||||||||||||||||||||||||||||
| *50.0 X 50.0 | |||||||||||||||||||||||||||||
| 2" X 2" | 50.8 X 50.8 | ||||||||||||||||||||||||||||
| *60.0 X 60.0 | |||||||||||||||||||||||||||||
| 21/2" x 21/2" | 63.5 x 63.5 | ||||||||||||||||||||||||||||
| *70.0 X 70.0 | |||||||||||||||||||||||||||||
| 75.0 X 75.0 | |||||||||||||||||||||||||||||
| 3" x 3" | 76.2 x 76.2 | ||||||||||||||||||||||||||||
| *80.0 X 80.0 | |||||||||||||||||||||||||||||
| 31/2" x 31/2" | 88.9 x 88.9 | ||||||||||||||||||||||||||||
| 90.0 x 90.0 | |||||||||||||||||||||||||||||
| *100 X 100 | |||||||||||||||||||||||||||||
| 4" x 4" | 101.6 x 101.6 | ||||||||||||||||||||||||||||
| 110 x 110 | |||||||||||||||||||||||||||||
| *120 x 120 | |||||||||||||||||||||||||||||
| 125 x 125 | |||||||||||||||||||||||||||||
| 130 x 130 | |||||||||||||||||||||||||||||
| 140 x 140 | |||||||||||||||||||||||||||||
| *150 x 150 | |||||||||||||||||||||||||||||
| 160 x 160 | |||||||||||||||||||||||||||||
| 180 x 180 | |||||||||||||||||||||||||||||
| *200 x 200 | |||||||||||||||||||||||||||||
| 250 x 250 | |||||||||||||||||||||||||||||
| *300 x 300 | |||||||||||||||||||||||||||||
| Note: | |||||||||||||||||||||||||||||
| - For Thickness Over > 6.0mm - 12.5 mm, Please refer sales office. | |||||||||||||||||||||||||||||
| -For Certain Size/s - Min Order Quantities May Apply. Please contact Sales Office with your requirement/s. | |||||||||||||||||||||||||||||
| -Project Specific Enquiry - Cost Effective & Reliable Delivery - Contact Sales Office to Discuss. | |||||||||||||||||||||||||||||
| EUROPEAN ORIGIN. Lean Duplex - W-NR 1.4162, 1.6062 | ||||||||
| As Welded Mechanical & Structural Stainless Steel Hollow Sections. Dimensional Tolerances Information - Refer under TAB -"Features". | ||||||||
| ■SURFACE FINISH: Brushed Polished for Tube Dimensions ≤ 100 x 100 x 6mm. For tube Dimensions > 100 x 100 x 6 mm - Unpolished/Mill Finish. | ||||||||
| Other Finishes/Sizes/Custom Lengths-Specific Project Applications Requirments - Please contact sales office. | ||||||||
| ● SQUARE | 厚度Thickness/Tebal | |||||||
| Weight Kg/M | ||||||||
| H x B (mm) | 1.5 | 2.0 | 2.5 | 3.0 | 4.0 | 5.0 | 6.0 | |
| 25 | 25 | 1.055 | ||||||
| 30 | 30 | 1.289 | 1.667 | |||||
| 32 | 32 | 1.382 | 1.792 | |||||
| 35 | 35 | 1.523 | 1.979 | |||||
| 38 | 38 | 1.663 | 1.166 | |||||
| 40 | 40 | 1.757 | 2.291 | 2.799 | ||||
| 50 | 50 | 2.225 | 2.915 | 3.579 | ||||
| 60 | 60 | 2.693 | 3.539 | 4.359 | 5.154 | 6.667 | ||
| 70 | 70 | 4.163 | 5.139 | 6.090 | 7.915 | |||
| 75 | 75 | 4.475 | 5.529 | 6.558 | 8.539 | |||
| 80 | 80 | 4.787 | 5.919 | 7.026 | 9.163 | 11.197 | ||
| 100 | 100 | 7.479 | 8.898 | 11.659 | 14.317 | 16.872 | ||
| 120 | 120 | 10.770 | 14.155 | 17.437 | 20.616 | |||
| 150 | 150 | 13.578 | 17.899 | 22.117 | 26.232 | |||
| 200 | 200 | 24.139 | 29.917 | 35.592 | ||||
| 250 | 250 | 30.379 | 37.717 | 44.952 | ||||
| 300 | 300 | 36.619 | 45.517 | 54.312 | ||||
Wide Range: 10 x 10mm to 300 x 300 mm square. Wall Thickness up to 6.0 mm.
Client's Choice: Supply from Asia or Europe. Lean Duplex W-NR 1.4162, 1.4062 & Ferritic stainless W-NR 1.4003 fm Europe.
Short delivery lead timings - On request and prior discussion/aggrement.
Reliability, Quality, Competitive Prices, Documentation.
Can supply Welded pipes, Pressed U-Channels, Rectangular & Round Tubes on same order.
Packaging - Choice of Bundle packaing or steel Crates. - (E.G of Photos Available under "Packaging" Tab.
Further Features:
- Low maintenance & Low life cycle.
- Hygienic, Corrosion resistance, Strength.
- Structurally aesthetic, Fire resistance.
- Surface finish options available.
- Applicable to existing design codes & 100 % Recyclable.
Lean Duplex.
Lean Duplex cold formed welded hollow sections features a low nickel ratio & very high strength. This enables lighter
weight constructions by using lighter guage stainless.
The stable price level is due to the very low nickel content (1-2%) & practically nill - minor content of molybdenium whilst
this material still retains competing corrosion resistance with the standard grades.
Main advantage from structural point of view is its improved stress corrosion cracking resistance in aggressive enviornments, in some
applications replacement to grade 316 or 316L could be considered.
The optimized alloy gives better corrosion resistance, keeps material costs more stable compared to austenitic grades 304 / EN 1.4301 saving
delivery costs. This alloy is ideal for construction, transportation & process industries and applications where high strength, good
corrosion resistance and low life cycle costs are needed.
- Less weight, higher strength.
- Possibilities to reduce weight & costs.
- Good corrosion resistance.
- High strengt.
- Cost Effectiveness for demanding applications.
| ASTM A-554 - 03 CHEMICAL REQUIRMENTS | ||||||||||
| Grade | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Nickel | Chromium | Molybdenum | Titanium | Columbium + Tantalum |
| Max | Max | Max | Max | Max | ||||||
| Austenitic | ||||||||||
| 301 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 6.0-8.0 | 16.0-18.0 | |||
| 302 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 8.0-10.0 | 17.0-19.0 | |||
| 304 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 8.0-13.0 | 18.0-20.0 | |||
| 304-L | 0.035 ͣ | 2.00 | 0.040 | 0.030 | 1.00 | 8.0-13.0 | 18.0-20.0 | |||
| 305 | 0.12 | 2.00 | 0.040 | 0.030 | 1.00 | 10.0-13.0 | 17.0-19.0 | |||
| 309S309S | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 12.0-15.0 | 22.0-24.00 | |||
| 309-S-Cb | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 12.0-15.0 | 22.0-24.00 | ͩ | ||
| 310S | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 19.0-22.0 | 24.0-26.0 | |||
| 316 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | ||
| 316-L | 0.035 ͣ | 2.00 | 0.040 | 0.030 | 1.00 | 10.0-15.0 | 16.0-18.0 | 2.0-3.0 | ||
| 317 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 11.0-14.0 | 18.0-20.0 | 3.0-4.0 | ||
| 321 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 9.0-13.0 | 17.0-20.0 | ͨ | ||
| 330 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 33.0-36.0 | 14.0-16.0 | |||
| 347 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 9.0-13.0 | 17.0-20.0 | ͩ | ||
| Ferritic | ||||||||||
| 429 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50max | 14.0-16.0 | |||
| 430 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50max | 16.0-18.0 | |||
| 430-Ti | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.075max | 16.0-19.5 | 5 x C min, 0.75 max | ||
| ͣ Small dia or thin walls or both, where many drawing passes are required, a carbon content of 0.040% max is necessary in grades 304-L & 316-L. | ||||||||||
| Small Outside Dia Tubes are defined as those less than 0.500 in (12.7mm) & light wall tubes as those less than 0.049 in (1.24 mm) in average wall thickness. | ||||||||||
| ͩ The columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.00 % | ||||||||||
| ͨ The titanium content shall be not less than five times the carbon content and not more than 0.60 %. | ||||||||||
| Stainless welded mechanical tubing supplied as cold worked unless otherwise specified. | ||
| ASTM A-554 - 03 Permissible Variations in Dimensions-Square & Rectangular Tubing. | ||
| Largest Specified Outside Dimension Across Flats - in. (mm) | Wall Thickness, in. (mm) | ±, in. (mm), across Flats, Convexity or Concavity, incl |
| To 1 1/4 (31.8), incl | All | 0.015 (0.38) |
| Over 1 1/4 to 2 1/2 (31.8 to 63.5), incl | All | 0.020 (0.51) |
| Over 2 1/4 to 5 1/2 (63.5 to 139.7), incl | All | 0.030 (0.76) |
| Over 5 1/4 to 8 (139.7 to 203.2), incl | All | 0.060 (1.52) |
| Wall Thickness Tolerance = ± 10 % of Specified Wall Thickness | ||
| Maximum Radii of Corners | ||
| Wall Thickness, in. (mm) | Radii of Corners, max, in. (mm) | |
| Over 0.20 to 0.049 (0.51 to 1.24), incl | 3/32 (2.4) | |
| Over 0.049 to 0.065 (1.24 to 1.65), incl | 1/8 (3.2) | |
| Over 0.065 to 0.083 (1.65 to 2.11), incl | 9/64 (3.6) | |
| Over 0.083 to 0.095 (2.11 to 2.42), incl | 3/16 (4.8) | |
| Over 0.095 to 0.109 (2.42 to 2.77), incl | 13/64 (5.2) | |
| Over 0.109 to 0.134 (2.77 to 3.40), incl | 7/32 (5.6) | |
| Over 0.134 to 0.156 (3.40 to 3.96), incl | 1/4 (6.4) | |
| Over 0.156 to 0.200 (3.96 to 5.08), incl | 3/8 (9.5) | |
| Over 0.200 to 0.250 (5.08 to 6.35), incl | 1/2 (12.7) | |
| Over 0.250 to 0.375 (6.35 to 9.53), incl | 3/4 (19.1) | |
| Twist Tolerances | ||
| Largest Size, in. (mm) | Twist in 3 ft, max, in. (mm/m) | |
| Under 1/2 (12.7) | 0.050 (1.4) | |
| 1/2 to 11/2 (12.7 to 38.1), incl | 0.075 (2.1) | |
| Over 11/2 to 21/2 (38.1 to 63.5), incl | 0.095 (2.6) | |
| Over 21/2 to 4 (63.5 to 101.6), incl | 0.125 (3.5) | |
| Over 4 to 6 (101.6 to 152.4) incl | 0.250 (6.9) | |
| Over 6 (152.4) | 0.375 (10.4) | |
| Squareness of Sides | ||
| ± B = C x 0.006 | ||
| where: | ||
| B = tolerance for out-of-square, and C = length of longest side. | ||
| The straightness tolerance is 0.075 in. in 3 ft or 2.1 mm in 1m using a 3-ft (1-m) straighedge and feeler gage. | ||
LEAN DUPLEX & FERRITIC STAINLESS GRADES - SUPPLIED FROM EUROPE.
| CHEMICAL COMPOSITION - LEAN DUPLEX W-NR 1.4162, 1.4062. | ||||||||||
| EN (W-NR) | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Nickel | Chromium | Molybdenum | Nitrogen | Others |
| C | Mn | P | S | Si | N | Cr | Mo | N | ||
| 1.4162 ͣ | 0.04 | 4.0-6.0 | 0.040 | 0.015 | 1.00 | 1.35-1.70 | 21.0-22.0 | 0.10-0.80 | 0.20-0.25 | Cu 0.1-0.8 |
| 1.4062 | 0.03 | 2.00 | 0.040 | 0.010 | 1.00 | 1.0-2.9 | 21.5-24.0 | 0.45 | 0.16-0.28 | |
| ͣ Fulfills the standards EN 10088-2 and EN 10088-4 | ||||||||||
| CHEMICAL COMPOSITION - FERRITIC W-NR 1.4003 | ||||||||||
| 1.4003 | 0.03 | 1.50 | 0.040 | 0.015 | 1.00 | 0.3-1.0 | 10.5-12.5 | 0.30 | ||
| Fulfills the standards EN 10088-2 and EN 10088-4 | ||||||||||
| MECHANICAL PROPERTIES | ||||
| (Measured from coil, minimum values unless indicated otherwise) | ||||
| LEAN DUPLEX | ||||
| EN | 0,2% - proof strength RP0,2 Mpa | Tensile strength Rm Mpa | Elongation A * % | |
| 1.4162 ͣ | T ≤ 3 mm | 530 | 700-900 | 20 |
| T > 3 mm | 480 | 680-900 | 30 | |
| T ≤ 3 mm | 530 | 700-900 | 20 | |
| 1.4062 | T > 3 mm | 480 | 680-900 | 30 |
| ͣ Fulfils the standard EN 10088-4. | ||||
| FERRITIC | ||||
| 0,2% - proof strength RP0,2 Mpa | Tensile strength Rm Mpa | Elongation A * % | ||
| 320 | 450-650 | 20 | ||
| * A80 when T < 3 mm, A5 when T ≥ 3 mm. | ||||
| SSM reserve the right to changes & takes no responsibility for any error of any numerical/values information that may appear on this site. | ||||
| LEAN DUPLEX W-NR 1.4162, 1.4062) - EUROPEAN ORIGIN | ||
| TOLERANCE (according to EN 10219-2) | ||
| Description | Tolerance | |
| Outside dimensions, B and H (1) | B, H < 100 mm ± 1 %, min ± 0.5 mm | |
| B, H ≥ 100 mm ± 0.8 %, min. ≤ 200mm | ||
| B, H > 200 mm ± 0.6 % | ||
| Concavity / Convexity (X ¹ / X ² ) | Max, 0.8 % with minimum of 0.5 mm | |
| Wall Thickness, T | ± 10 % | |
| Squareness | 90 ͦ ± 1 ͦ | |
| External corner profile, C 1, C 2 or R (1) | B, H ≤ 100 mm: 1.6 T - 2.4 T | |
| B, H > 100 mm and T ≤ 4 mm: | ||
| 2,0 T - 3.0 T | ||
| B, H > 100 mm and T > 4 mm: | ||
| 1.6 T - 2.4 T. | ||
| Length | Standard length 6 M. Tolerance 0/ + 20 mm (1) | |
| Straightness | 0.15 % of total length. | |
| Twist | 2 mm + 0.5 mm/m | |
| (1) Exception from standard. | ||
| Delivery Condition & Welding | Forming - Cold formed (roll formed) | |
| Welding Process - TIG/Plasma, Laser or HF | ||
| Weld Condition - External weld bead removed. Weld position narrow side | ||
| Markings on Tube | Ink-jet markings: Mill, Country of manufacture, grade, size, material traceability details, production dates & operator who welded. | |
| Packaging: Bundles | Plastic bands, Bundle Tags & Plastic foils. Any other packaging method subject to prior arrangments. | |
| Surface Finish | Brushed/Polished Sizes: ≤ 100mm x 100mm x 6 mm | |
| Unpolished Sizes: > 100 mm x 100 x 6mm | ||
Tubes supplied in standard austenitic grades as follows:
304, 304-L, 316, 316-L. As for other grades in this family, please discuss with sales office.
Lean Duplex Grade W-NR 1.4162 (UNS23204) tubes are manufactured & supplied from Europe, please discuss your enquiry with sales office. These tubes comes in superior quality surfaces, high dimensional accuracy & latest technology welding.
**For all other grades, minimum quantity per thickness may apply along with extended lead timings. Please discuss your enquiry with sales office.
All other grades:
If references required - Please refer sales office.
