首页 > Products > stainless steel pipe > 316L Stainless steel decorative pipe
Product Introduction：
Stainless steel decorative tube also called stainless steel welded pipe referred to as welded pipe, commonly used in steel or steel strip after the unit and the mold coil forming after welding made of steel. Welding steel pipe production process is simple, the production efficiency is high, the variety of specifications, equipment and less capital, but the general strength is lower than the seamless steel pipe.With the rapid development of high-quality strip rolling production and progress of welding and testing technology, and constantly improve the weld quality, varieties and specifications of welded steel pipe is increasing, and in more and more fields especially in the heat ex changer tube, decorative tube, etc. in the low-pressure fluid pipe instead of the seamless steel tube.
International Standard size of SS decoration round pipe
Inch | DN (mm) | OD (mm) | SCH5S | SCH10S | SCH10 | SCH20 | SCH30 | SCH40 | SCH60 | SCH80 | SCH100 | SCH120 | ---- |
1/8 | DN6 | 10.3 |
| 1.24 |
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| 1.73 |
| 2.42 |
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1/4 | DN8 | 13.7 |
| 1.65 |
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| 2.24 |
| 3.02 |
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3./8 | DN10 | 17.1 |
| 1.65 |
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| 2.31 |
| 3.2 |
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1/2 | DN15 | 21.3 | 1.65 | 2.11 |
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| 2.77 |
| 3.73 |
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3/4 | DN20 | 26.7 | 1.65 | 2.11 |
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| 2.87 |
| 3.91 |
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1 | DN25 | 33.4 | 1.65 | 2.77 |
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| 3.38 |
| 4.55 |
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1 1/4 | DN32 | 42.2 | 1.65 | 2.77 |
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| 3.56 |
| 4.85 |
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1 1/2 | DN40 | 48.3 | 1.65 | 2.77 |
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| 3.68 |
| 5.05 |
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2 | DN50 | 60.3 | 1.65 | 2.77 |
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| 3.91 |
| 5.54 |
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2 1/2 | DN65 | 73.0 | 2.11 | 3.05 |
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| 5.16 |
| 7.01 |
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3 | DN80 | 88.9 | 2.11 | 3.05 |
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| 5.49 |
| 7.62 |
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3 1/2 | DN90 | 101.6 | 2.11 | 3.05 |
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| 5.74 |
| 8.08 |
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4 | DN100 | 114.3 | 2.11 | 3.05 |
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| 6.02 |
| 8.58 |
| 11.13 |
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5 | DN125 | 141.3 | 2.77 | 3.4 |
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| 6.55 |
| 9.53 |
| 12.7 |
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6 | DN150 | 168.3 | 2.77 | 3.4 |
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| 7.11 |
| 10.97 |
| 14.27 |
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8 | DN200 | 219.1 | 2.77 | 3.76 |
| 6.35 | 7.04 | 8.18 | 10.31 | 12.7 | 15.09 | 18.26 |
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10 | DN250 | 273.1 | 3.40 | 4.19 |
| 6.35 | 7.8 | 9.27 | 12.7 | 15.09 | 18.26 | 21.44 |
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12 | DN300 | 323.9 | 3.96 | 4.57 |
| 6.35 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 |
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14 | DN350 | 355.5 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 |
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Theoretical weight for SS decoration round pipe(KG/M)
OD | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 1.2 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 | – |
9.5 | 0.112 | 0.233 | 0.153 | 0.173 | 0.192 | 0.211 | 0.248 | 0.298 | -- | -- | -- | -- |
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12.7 | 0.151 | 0.181 | 0.209 | 0.237 | 0.264 | 0.291 | 0.343 | 0.418 | -- | -- | -- | -- |
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15.9 |
| 0.228 | 0.265 | 0.300 | 0.336 | 0.371 | 0.439 | 0.538 | 0.692 | -- | -- | -- |
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19 | 0.230 | 0.275 | 0.319 | 0.362 | 0.405 | 0.448 | 0.532 | 0.653 | 0.846 | 1.027 | -- | -- |
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22 | 0.267 | 0.319 | 0.371 | 0.422 | 0.473 | 0.523 | 0.621 | 0.765 | 0.996 | 1.214 | -- | -- |
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25 | 0.305 | 0.364 | 0.423 | 0.482 | 0.540 | 0.597 | 0.711 | 0.878 | 1.145 | 1.401 | -- | -- |
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28 |
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| 0.476 | 0.542 | 0.607 | 0.672 | 0.801 | 0.990 | 1.295 | 1.588 | -- | -- |
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31.8 |
| 0.466 | 0.542 | 0.617 | 0.692 | 0.767 | 0.914 | 1.132 | 1.484 | 1.824 | 2.152 | 2.467 |
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38.1 |
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| 0.652 | 0.743 | 0.833 | 0.924 | 1.103 | 1.367 | 1.798 | 2.216 | 2.623 | 3.016 |
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50.8 |
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| 0.873 | 0.996 | 1.118 | 1.240 | 1.482 | 1.842 | 2.431 | 3.007 | 3.572 | 4.123 |
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60 |
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| 1.034 | 1.179 | 1.324 | 1.469 | 1.757 | 2.185 | 2.889 | 3.581 | 4.259 | 4.925 |
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63.5 |
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| 1.249 | 1.403 | 1.556 | 1.862 | 2.316 | 3.063 | 3.798 | 4.521 | 5.231 |
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76.2 |
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| 1.688 | 1.873 | 2.241 | 2.791 | 3.696 | 4.589 | 5.470 | 6.338 |
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88.9 |
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| 2.621 | 3.265 | 4.329 | 5.381 | 6.419 | 7.445 |
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101.6 |
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| 3.001 | 3.740 | 4.962 | 6.171 | 7.368 | 8.552 |
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108 |
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| 3.192 | 3.979 | 5.281 | 6.570 | 7.846 | 9.111 |
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114 |
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| 3.371 | 4.203 | 5.579 | 6.943 | 8.295 | 9.633 |
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127 |
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| 3.761 | 4.689 | 6.227 | 7.753 | 9.266 | 10.767 |
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133 |
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| 3.939 | 4.913 | 6.526 | 8.126 | 9.714 | 11.290 |
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141 |
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| 4.178 | 5.212 | 6.924 | 8.625 | 10.312 | 11.987 |
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159 |
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| 5.884 | 7.821 | 9.746 | 11.657 | 13.557 |
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168 |
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| 8.270 | 10.306 | 12.330 | 14.341 |
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219 |
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| 10.811 | 13.482 | 16.141 | 18.788 |
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Chemical composition and physical property for SS decoration round pipe
Grade | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni | Mo | Nitrgeo(Max) | Cu/Other |
201 | 0.15 | 5.5-7.5 | 0.06 | 0.03 | 1.0 | 16.0-18.0 | 0.5-1.0 | -- | 0.25 | -- |
202 | 0.15 | 7.5-10.0 | 0.06 | 0.03 | 1.0 | 17.0-19.0 | 1.5-2.5 | -- | 0.25 | -- |
301 | 0.15 | 2.0 | 0.045 | 0.03 | 1.0 | 16.0-18.0 | 6.0-8.0 | -- | 1.0 |
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304L | 0.03 | 2.0 | 0.045 | 0.03 | 1.0 | 18.0-20.0 | 8.01-10.5 | -- | 0.1 | -- |
309s | 0.08 | 2.0 | 0.045 | 0.03 | 1.0 | 22.0-24.0 | 12.0-15.0 | -- | -- | -- |
310s | 0.08 | 2.0 | 0.045 | 0.03 | 1.5 | 24.0-26.0 | 19.0-22.0 | -- | -- | -- |
316L | 0.03 | 2.0 | 0.045 | 0.03 | 1.0 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.1 |
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321 | 0.08 | 2.0 | 0.045 | 0.03 | 0.75 | 17.0-19.0 | 9.0-12.0 | -- | 0.1 | -- |
2205 | 0.025 | 1.27 | 0.026 | 0.0015 | 0.58 | ≤22.50 | ≤5.20 | ≤3.10 | -- | -- |
904L | 0.02 | 2.0 | 0.045 | 0.035 | 1.0 | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | -- | -- |
Grade | TS(Mpa) | YS(Mpa) | EL(%) | RRA(%0 | Density |
201 | ≥520 | ≥275 | 55-60 | - | 7.93 |
202 | ≥590 | ≥245 | - | - | 7.93 |
304 | ≥520 | ≥205 | ≥40 | ≥60 | 7.93 |
304L | ≥520 | ≥205 | ≥40 | ≥60 | 7.93 |
309S | ≥515 | ≥205 | ≥40 | ≥50 | 7.98 |
310S | ≥520 | ≥205 | ≥40 | ≥50 | 7.98 |
321 | ≥520 | ≥205 | ≥40 | ≥50 | 7.98 |
316L | ≥485 | ≥170 | ≥30 | ≥40 | 7.98 |
Production process of SS decoration round pipe
We have our own processing factory, production machines, skilled workers. Short production cycle, high efficiency, high product quality.Division,our company have 201,304,316L and other conventional goods,delivery time is short.For the majority of customers is a good choice.Also,we can process No.4,HL,Mirror finish etc by our machine according to customers requirements.
1)Prepare the original material: stainless steel sheet/strip
2) Slit the original material: stainless steel sheet/strip
3) Use the machine to rolled into tube type
4) Then fused by rolled machine
5) Finish treatment:Bright heat treatment
6) Both inside and outside the weld process
7) The shape of the pipe
8) Important processing:Fixed outside diameter
9) eddy current testing
10) Laser diameter measurement
11) Pickling process
12) Finished: Storage
Allowed wall thickness tolerance
Level | Wall tolerance allowed |
D1 | +-1.5%,Min +-0.75mm |
D2 | +-1.0%,Min +-0.50mm |
D3 | +-0.75%,Min +-0.30mm |
D4 | +-0.50%,Min +-0.10mm |
Calculating formula for weight(KG/M)
(Outdais meter-wall thickness)×wall thickness｝×0.02491=KG/M
Treatment for finish
No.4 finish:
Honed with 150-180 grit abrasive belt products. It has better brightness with discontinuous coarse grain,
fine stripes than NO.3. Stainless steel castings used for sanding and polishing the surface.
HL finsih:
Polishing abrasive belt with a suitable size (150 to 320 mesh), so No.4 generates continuous hairline brushed surface.
Mirror finish
We call it No.8 finish.Rotary buff polishing, mirror-like surface of the polishing surface.
Application for stainless steel decorative pipe
The use of decorative tube is very wide.Such as Stainless steel window, stainless steel railing, stainless steel stair railing, interior design, etc.The main purpose is used for indoor and outdoor decoration.
