Silicon Steels is the leading manufacturer and the most popular supplier and manufacturer of Stainless Steel 321 ERW Pipes. The 321 Stainless Steel Tube was engineered to resist intergranular corrosion, in particular in high temperature environments. The more traditional austenitic stainless steel grade is prone to chromium carbide precipitation at a temperature between 800 ° and 1500 ° F, compared to Stainless Steel 321H EFW Pipes with greater creeping strength and stress breaking. The ASTM A312 TP 321 Stainless Steel Pipe also has excellent strength characteristics at lower temperatures.
321 Seamless steel ERW pipes with the use of modern machines to test the consistency in order to manufacture high-quality goods for our customers. Our 321/321H soldering pipes are available to customers in various sizes, thickness and specifications. Stainless Alloy 321H is a general purpose austenitic, carbide-stabilized steel designed for working at temperature between 427 ° C and 816 ° C in carbide precipitation. When exposed to slightly corrosive conditions, SS 321 pipes are not subject to weld decay intergranular corrosion. Grade 321H pipes resistance to sensitization, coupled with their higher strength at high temperatures makes them ideal when they are prone or have inadequate hot energy.
SS 321H Tubes are also used in the production of radiant supercharges, boilers, steam pipes and refinery piping in general. While our pipes in Alloy 321 have high strengths, there is still enough residual flexibility to allow for a substantial cold deformation. Applications of these Alloy 321 H Welded tubes include exhaust and filters, chemical processing equipment, welding equipment. Application: Our 321 Steel Pipes are a highly versatile material with high resistance to creep with oxidation for a variety of purposes. These UNS S32100 seamless pipes have been designed in Designed with international and national standards and are provided for our valued customers in personalized dimensions and shapes. Such SS 321 ERW Tubing, also known as WNR 1.4541, can be found on the market at the highest possible prices.
Specifications | ASTM A312 / ASME SA312 |
Sizes | 8" NB to 24" NB |
Wall Thickness | 0.5 to 150mm Thick |
Schedule | SCH 5S, 10S,10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS |
Length | Single Random, Double Random & Required Length |
Form | Round, Square, Rectangular, Hydraulic Pipes |
Type | Electric Resistance Welded |
End | Plain end, Bevelled end |
Length | Single Random, Double Random & Cut Length |
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STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
Grade | C | N | Ni | Si | P | S | Mn | Cr | TI | |
---|---|---|---|---|---|---|---|---|---|---|
SS 321 | Min | - | - | 9.00 | - | - | - | - | 17.0 | 5(C+N) |
max | 0.08 | 0.10 | 12.00 | 1.00 | 0.045 | 0.030 | 2.00 | 19.0 | 0.70 max |
Stainless Steel 321 ERW Pipes Weight Chart
NPS | Outside Diameter | Wall Thickness | Weight | Weight | |||
in | mm | in | mm | Sched | kg/Mtr | Lb/ft | |
1/2″ | 0.840 | 21 | 0.109 | 2.769 | 40 STD | 1.268 | 0.851 |
0.147 | 3.734 | 80 STD | 1.621 | 1.088 | |||
3/4″ | 1.050 | 27 | 0.113 | 2.870 | 40 STD | 1.684 | 1.131 |
0.154 | 3.912 | 80 STD | 2.195 | 1.474 | |||
1″ | 1.315 | 33 | 0.133 | 3.378 | 40 STD | 2.501 | 1.679 |
0.179 | 4.547 | 80 STD | 3.325 | 2.172 | |||
1 1/4″ | 1.660 | 42 | 0.140 | 3.556 | 40 STD | 3.385 | 2.273 |
0.191 | 4.851 | 80 STD | 4.464 | 2.997 | |||
1 1/2″ | 1.900 | 48 | 0.145 | 3.683 | 40 STD | 4.048 | 2.718 |
0.200 | 5.080 | 80 STD | 5.409 | 3.361 | |||
2″ | 2.375 | 60 | 0.154 | 3.912 | 40 STD | 5.441 | 3.653 |
0.218 | 5.537 | 80 STD | 7.480 | 5.022 | |||
2 1/2″ | 2.875 | 73 | 0.203 | 5.516 | 40 STD | 8.629 | 5.793 |
0.276 | 7.010 | 80 STD | 11.411 | 7.661 | |||
3″ | 3.500 | 89 | 0.216 | 5.486 | 40 STD | 11.284 | 7.576 |
0.300 | 7.620 | 80 STD | 15.272 | 10.253 | |||
4″ | 4.500 | 114 | 0.237 | 6.020 | 16.073 | 10.790 | |
0.337 | 8.560 | 22.318 | 14.983 | ||||
6″ | 6.625 | 168 | 0.188 | 4.775 | 19.252 | 12.924 | |
0.203 | 5.516 | 20.739 | 13.923 | ||||
0.219 | 5.563 | 22.318 | 14.983 | ||||
0.250 | 6.350 | 25.354 | 17.021 | ||||
0.280 | 7.112 | 40 STD | 58.263 | 18.974 | |||
0.312 | 7.925 | 31.334 | 21.036 | ||||
0.375 | 9.525 | 37.285 | 25.031 | ||||
0.432 | 10.973 | 80 XHY | 42.561 | 28.573 | |||
0.500 | 12.700 | 48.719 | 32.708 | ||||
8″ | 8.625 | 219 | 0.188 | 4.775 | 25.233 | 16.940 | |
0.203 | 5.156 | 27.198 | 18.259 | ||||
0.219 | 5.563 | 29.286 | 19.661 | ||||
0.250 | 6.350 | 20 | 33.308 | 22.361 | |||
0.277 | 7.036 | 30 | 36.786 | 24.696 | |||
0.322 | 8.179 | 40 | 42.352 | 28.554 | |||
0.375 | 9.525 | 49.216 | 33.041 | ||||
0.406 | 10.312 | 60 | 53.085 | 35.638 | |||
0.500 | 12.700 | 80 XHY | 64.627 | 43.388 | |||
10″ | 10.750 | 273 | 0.188 | 4.775 | 31.588 | 21.207 | |
0.219 | 5.563 | 36.689 | 24.631 | ||||
0.250 | 6.350 | 20 | 41.759 | 28.035 | |||
0.307 | 7.798 | 30 | 51.002 | 34.240 | |||
0.344 | 8.738 | 56.946 | 38.231 | ||||
0.365 | 9.271 | 40 STD | 63.301 | 40.483 | |||
0.438 | 11.125 | 71.852 | 48.238 | ||||
0.500 | 12.700 | 60 XHY | 81.530 | 54.735 | |||
0.594 | 15.088 | 80 | 95.969 | 64.429 | |||
12″ | 12.750 | 324 | 0.188 | 4.775 | 37.570 | 25.222 | |
0.219 | 5.563 | 43.657 | 29.309 | ||||
0.250 | 6.350 | 49.713 | 33.375 | ||||
0.281 | 7.137 | 55.739 | 37.420 | ||||
0.312 | 7.925 | 61.735 | 41.445 | ||||
0.375 | 9.525 | 73.824 | 49.562 | ||||
0.406 | 10.312 | 79.727 | 53.525 | ||||
0.500 | 12.700 | 97.438 | 65.415 | ||||
0.562 | 14.275 | 108.966 | 73.154 | ||||
14″ | 14.000 | 356 | 0.188 | 4.775 | 41.308 | 27.732 | |
0.219 | 5.563 | 48.012 | 32.233 | ||||
0.250 | 6.350 | 20 | 54.685 | 36.713 | |||
0.281 | 7.137 | 61.327 | 41.172 | ||||
0.312 | 7.925 | 67.939 | 45.611 | ||||
0.375 | 9.525 | STD | 81.281 | 54.568 | |||
0.438 | 11.125 | 40 | 94.498 | 63.441 | |||
0.500 | 12.700 | XHY | 107.381 | 72.090 | |||
0.625 | 15.875 | 132.983 | 89.278 | ||||
16” | 16.000 | 406 | 0.188 | 4.775 | 47.290 | 21.748 | |
0.219 | 5.563 | 54.980 | 36.910 | ||||
0.250 | 6.350 | 10 | 62.639 | 42.053 | |||
0.281 | 7.137 | 70.268 | 47.174 | ||||
0.312 | 7.925 | 20 | 77.866 | 52.275 | |||
0.344 | 8.738 | 85.677 | 57.519 | ||||
0.375 | 9.525 |
30 STD |
93.213 | 62.578 | |||
0.438 | 11.125 | 108.433 | 72.797 | ||||
0.500 | 12.700 |
40 XHY |
123.289 | 82.770 | |||
18″ | 18.000 | 457 | 0.219 | 5.563 | 61.948 | 41.588 | |
0.250 | 6.350 | 70.593 | 47.393 | ||||
0.281 | 7.137 | 79.208 | 53.176 | ||||
0.312 | 7.925 | 20 | 87.792 | 58.939 | |||
0.375 | 9.525 | STD | 105.144 | 70.588 | |||
0.438 | 11.125 | 30 | 122.369 | 82.152 | |||
0.500 | 12.700 | XHY | 139.198 | 93.450 | |||
0.562 | 14.275 | 40 | 155.904 | 104.666 | |||
0.625 | 15.875 | 172.754 | 115.978 | ||||
20″ | 20.000 | 508 | 0.250 | 6.350 | 78.547 | 52.733 | |
0.282 | 7.163 | 88.458 | 59.386 | ||||
0.312 | 7.925 | 97.719 | 65.604 | ||||
0.375 | 9.525 | 20 STD | 117.075 | 78.598 | |||
0.438 | 11.125 | 136.305 | 91.508 | ||||
0.500 | 12.700 | 30 XHY | 155.106 | 104.130 | |||
0.594 | 15.088 | 40 | 183.378 | 123.110 | |||
0.625 | 15.875 | 192.640 | 129.328 | ||||
0.688 | 17.475 | 211.368 | 141.901 | ||||
24″ | 24.000 | 610 | 0.250 | 6.350 | 94.456 | 63.413 | |
0.281 | 7.137 | 106.029 | 71.183 | ||||
0.312 | 7.925 | 117.573 | 18.932 | ||||
0.375 | 9.525 | 20 STD | 140.938 | 64.618 | |||
0.438 | 11.125 | 164.176 | 110.219 | ||||
0.500 | 12.700 | XHY | 186.923 | 125.490 | |||
0.625 | 15.875 | 232.410 | 156.028 | ||||
0.688 | 17.475 | 40 | 255.148 | 171.293 | |||
0.750 | 19.050 | 277.401 | 186.233 | ||||
30″ | 30.000 | 762 | 0.250 | 6.350 | 118.318 | 79.433 | |
0.281 | 7.137 | 132.851 | 89.189 | ||||
0.312 | 7.925 | 10 | 147.353 | 98.925 | |||
0.375 | 9.525 | STD | 176.731 | 118.648 | |||
0.438 | 11.125 | 205.983 | 138.286 | ||||
0.500 | 12.700 | 20 XHY | 234.647 | 157.530 | |||
0.625 | 15.875 | 30 | 292.066 | 196.078 | |||
0.688 | 17.475 | 320.817 | 215.380 | ||||
0.750 | 19.050 | 348.988 | 234.293 | ||||
36″ | 36.000 | 914 | 0.250 | 6.350 | 142.180 | 95.453 | |
0.281 | 7.137 | 159.672 | 107.196 | ||||
0.312 | 7.925 | 10 | 177.133 | 118.918 | |||
0.375 | 9.525 | STD | 215.525 | 142.678 | |||
0.438 | 11.125 | 247.790 | 166.353 | ||||
0.500 | 12.700 | 20 XHY | 282.372 | 198.570 | |||
0.625 | 15.875 | 351.723 | 236.128 | ||||
0.688 |
17.475 | 386.487 | 259.467 | ||||
0.750 |
19.050 | 420.576 | 282.353 | ||||
42″ | 42.000 | 1067 | 0.312 | 7.925 | 206.914 | 138.911 | |
0.375 | 9.525 | STD | 248.319 | 166.708 | |||
0.500 | 12.700 | XHY | 33.097 | 221.610 | |||
0.750 | 19.050 | 492.163 | 330.413 | ||||
48″ | 48.000 | 1219 | 0.375 | 9.525 | STD | 284.112 | 190.738 |
0.438 | 11.125 | 331.404 | 222.487 | ||||
0.500 | 12.700 | XHY | 377.822 | 253.650 | |||
0.750 | 19.050 | 563.750 | 378.473 | ||||
0.875 | 22.225 | 655.969 | 440.383 |
Imperial Dimensions of Stainless Steel 321 ERW Pipes Sizes
Pipe OD mm |
Pipe WT mm |
in. | Sch | Kg/m |
---|---|---|---|---|
13.72 | 1.65 | 1/4 | 10S | 0.50 |
13.72 | 2.24 | 1/4 | 40S | 0.64 |
13.72 | 3.02 | 1/4 | 80S | 0.81 |
17.15 | 1.65 | 3/8 | 10S | 0.64 |
17.15 | 2.31 | 3/8 | 40S | 0.86 |
17.15 | 3.20 | 3/8 | 80S | 1.12 |
21.34 | 2.11 | 1/2 | 10S | 1.02 |
21.34 | 2.77 | 1/2 | 40S | 1.29 |
21.34 | 3.73 | 1/2 | 80S | 1.65 |
26.67 | 2.11 | 3/4 | 10S | 1.30 |
26.67 | 2.87 | 3/4 | 40S | 1.71 |
26.67 | 3.91 | 3/4 | 80S | 2.23 |
33.40 | 2.77 | 1 | 10S | 2.13 |
33.40 | 3.38 | 1 | 40S | 2.54 |
33.40 | 4.55 | 1 | 80S | 3.29 |
33.40 | 6.352) | 1 | 160 | 4.30 |
42.16 | 2.77 | 1¼ | 10S | 2.73 |
42.16 | 3.56 | 1¼ | 40S | 3.44 |
42.16 | 4.85 | 1¼ | 80S | 4.53 |
42.16 | 6.352) | 1¼ | 160 | 5.69 |
48.26 | 2.77 | 1½ | 10S | 3.16 |
48.26 | 3.68 | 1½ | 40S | 4.11 |
48.26 | 5.08 | 1½ | 80S | 5.49 |
60.33 | 2.77 | 2 | 10S | 3.99 |
60.33 | 3.91 | 2 | 40S | 5.52 |
60.33 | 5.54 | 2 | 80S | 7.60 |
60.33 | 8.742) | 2 | 160 | 11.29 |
73.03 | 3.05 | 2½ | 10S | 5.35 |
73.03 | 5.16 | 2½ | 40S | 8.77 |
73.03 | 7.01 | 2½ | 80S | 11.59 |
88.90 | 3.05 | 3 | 10S | 6.56 |
88.90 | 5.49 | 3 | 40S | 11.47 |
88.90 | 7.62 | 3 | 80S | 15.51 |
88.90 | 11.132) | 3 | 160 | 21.67 |
101.60 | 3.05 | 3½ | 10S | 7.53 |
101.60 | 5.74 | 3½ | 40S | 13.78 |
101.60 | 8.08 | 3½ | 80S | 18.92 |
114.30 | 3.05 | 4 | 10S | 8.50 |
114.30 | 6.02 | 4 | 40S | 16.32 |
114.30 | 8.56 | 4 | 80S | 22.67 |
114.30 | 13.492) | 4 | 160 | 34.05 |
141.30 | 6.55 | 5 | 40S | 22.10 |
141.30 | 9.53 | 5 | 80S | 31.44 |
141.30 | 15.882) | 5 | 160 | 49.87 |
168.28 | 3.4 | 6 | 10S | 14.04 |
168.28 | 7.11 | 6 | 40S | 28.69 |
168.28 | 10.97 | 6 | 80S | 43.21 |
168.28 | 14.27 | 6 | 120 | 54.75 |
168.28 | 18.262) | 6 | 160 | 68.59 |
219.08 | 8.18 | 8 | 40S | 43.20 |
219.08 | 12.7 | 8 | 80S | 65.63 |
219.08 | 18.23 | 8 | 120 | 91.30 |
219.08 | 23.012) | 8 | 160 | 112.97 |
Pipe O.D. (In.) |
Wall Thickness Of Pipe (Inches) | |||||||
---|---|---|---|---|---|---|---|---|
.028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
Working Pressure (Psig) | ||||||||
1/8 | 7900 | 10100 | ||||||
1/4 | 3700 | 4800 | 7000 | 9500 | ||||
5/16 | 3700 | 5400 | 7300 | |||||
3/8 | 3100 | 4400 | 6100 | |||||
1/2 | 2300 | 3200 | 4400 | |||||
3/4 | 2200 | 3000 | 4000 | 4600 | ||||
1 | 2200 | 2900 | 3400 | 3900 | 4300 |
Types | Out diameter | Wall thickness | Length |
---|---|---|---|
NB Sizes (in stock) | 1/8” ~ 8” | SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 | Upto 6 Meters |
Duplex 2205 ERW Pipe (Custom Sizes) | 5.0mm ~ 203.2mm | As per requirement | Upto 6 Meters |
Duplex 2205 Welded Pipe (in Stock + Custom Sizes) | 5.0mm ~ 1219.2mm | 1.0 ~ 15.0 mm | Upto 6 Meters |
These material are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthrough the origins of stainless steel lies in a lucky accident. From the smallest part of zipper to the largest building skyscraper, stainless steel is an essential part of modern life.Stainless steel’s strength, resistance to corrosion and low maintenance make it the ideal material for a wide range of applications. It is also has a long life cycle and is 100% recyclable.
We ship our stainless steel metal products in industry leading packaging designed to ensure your order reaches its destination safely. We offer multiple packaging options to meet your specific requirements. Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging. We pack our goods in numerous ways based on the products. We pack our products in multiple ways.
To specify the various physical and mechanical properties of the finished product, various tests, both destructive and nondestructive, are performed. Metallurgical, hardness, hardenability, tension, ductility, compression, fatigue, impact, wear, corrosion, creep, machinability, radiography, magnetic particle, ultrasonic, and eddy current are some of the major tests that are performed by quality control personnel. Metallurgical testing is used to determine the quality of steel by analyzing the microstructure of a sample under a microscope. A cross section of a sample is first highly polished and then examined at a magnification from 100-500 diameters. The microstructure of steel consists of grains of different compositions and sizes.