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Stainless Steel 304L Pipe

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Stainless Steel 304L Pipe

Stainless Steel 304L Pipe is a low-carbon version of the standard 304 grade, designed to offer enhanced corrosion resistance, especially after welding. The reduced carbon content in 304L minimizes the risk of carbide precipitation during welding, making it ideal for applications where heavy welding is required without the need for post-weld annealing.

Made from an austenitic stainless steel alloy containing 18% chromium and 8% nickel, 304L pipe provides excellent resistance to a wide range of corrosive environments, including acidic and mildly chlorinated conditions. It also maintains good strength, ductility, and ease of fabrication.

Stainless Steel 304L Pipe is widely used in industries such as food and beverage, pharmaceuticals, chemical processing, oil and gas, and water treatment. It is suitable for both structural and fluid transport applications where hygiene, corrosion resistance, and durability are essential.

Available in seamless, welded, and ERW forms, and in a variety of sizes and wall thicknesses, Stainless Steel 304L Pipe meets international standards for quality and safety. It delivers long-lasting, low-maintenance performance in both industrial and commercial environments.

Stainless Steel 304L Pipe

Specification of Stainless Steel 304L Pipe

Specifications ASTM A312 / ASME SA312
Grade 304L
Thickness 0.25, 0.28, 0.32, 0.37, 0.41, 0.51, 0.61, 0.71, 0.91, 1.11, 1.15, 1.41 mm
End Screwed, Beveled, Threaded, Plain
Type Welded | CDW | ERW | DOM | Seamless | Fabricated | CEW
Sizes 5.0 milimeter - 1219.2 milimeter
O.D. Sizes up to 12 inch NB, 6.00 mm Other Dia. upto 250 mm Other Dia.
Schedule Thickness Ranges SCH XS, SCH 40, SCH 80S, SCH 5, SCH 80, SCH XXS, SCH 160, SCH10, All Schedules
Length Single Random, Double Random, Cut to length
Form “U” Shape, Square, Pan Cake Coils, Coiled, Rectangular, Round, Hydraulic Tubes.
Surface Finish 2B, No.1, No.4, No.8 Mirror Finish
Delivery Condition Annealed & Pickled, Polished, Bright & Annealed, etc

SS UNS S30403 Welded Pipe Standard Sizes

Size O.D. Inches 5s SCH 5 10s SCH 10 20 30 40s & STD SCH 40
1/8 0.405 0.35 0.049 0.049 0.068 0.068      
0.1383 0.1863 0.1863 0.2447 0.2447        
1/4 0.54 0.049 0.065 0.065 0.088 0.088      
0.257 0.3297 0.3297 0.4248 0.4248        
3/8 0.675 0.049 0.065 0.065 0.091 0.091      
0.3276 0.4235 0.4235 0.5676 0.5676        
1/2 0.84 0.065 0.065 0.083 0.083 0.109 0.109    
0.5383 0.5383 0.671 0.671 0.851 0.851      
3/4 1.05 0.065 0.065 0.083 0.083 0.113 0.113    
0.6838 0.6838 0.8572 0.8572 1.131 1.131      
1 1.315 0.065 0.065 0.109 0.19 0.133 0.133    
0.8678 0.8678 1.404 1.404 1.679 1.679      
1 1/4 1.66 0.065 0.065 0.109 0.109 0.14 0.14    
1.107 1.107 1.806 1.806 2.273 2.273      
1 1/2 1.9 0.065 0.065 0.109 0.109 0.145 0.145    
1.274 1.274 2.638 2.638 2.718 2.718      
2 2.375 0.065 0.065 0.109 0.109 0.154 0.154    
1.604 1.604 2.638 2.638 3.653 3.653      
2 1/2 2.875 0.083 0.083 0.12 0.12 0.203 0.203    
2.475 2.475 3.531 3.531 5.793 5.793      
3 3.5 0.083 0.083 0.12 0.12 0.216 0.216    
3.029 3.029 4.332 4.332 7.576 7.576      
3 1/2 4 0.083 0.083 0.12 0.12 0.226 0.226    
3.472 3.472 4.97 4.97 9.109 9.109      
4 4.5 0.083 0.083 0.12 0.12 0.237 0.237 0.281  
3.915 3.915 5.613 5.613 10.79 10.79 12.66    
4 1/2 5 0.247              
12.53                
5 5.563 0.109 0.109 0.134 0.134 0.258 0.258    
6.349 6.349 7.77 7.77 14.62 14.62      
6 6.625 0.109 0.109 0.134 0.134 0.28 0.28    
7.585 7.585 9.289 9.289 18.97 18.97      
7 7.625 0.301              
23.57                
8 8.625 0.109 .109 0.148 0.148 0.25 0.277 0.322 0.322
9.914 9.914 13.4 13.4 22.36 24.7 28.55 28.55 35.64
9 9.625 0.342              
33.9                
10 10.75 0.134 0.134 0.165 0.165 0.25 0.307 0.365 0.365
15.19 15.19 18.65 18.65 28.04 34.24 40.48 40.48 54.74
11 11.75 0.375              
45.55                
12 12.75 0.156 0.165 0.18 0.18 0.25 0.33 0.375 0.406
21.07 22.18 24.2 24.2 33.38 43.77 49.56 53.53 73.16
14 14 0.156 0.188 0.25 0.312 0.375 0.375 0.437 0.593
23.06 27.73 36.71 45.68 54.57 54.57 63.67 84.91  
16 16 0.165 0.188 0.25 0.312 0.437 0.375 0.562 0.75
27.9 31.75 42.05 52.36 62.58 62.58 82.77 107.5  
18 18 0.165 0.188 0.25 0.312 0.437 0.375 0.562 0.75
31.43 35.76 47.39 59.03 82.06 70.59 104.8 138.2  
20 20 0.188 0.218 0.25 0.375 0.5 0.375 0.593 0.812
39.78 46.05 52.73 78.6 104.1 78.6 122.9 166.4  
24 24 0.218 0.25 0.25 0.375 0.562 0.375 0.687 0.968
55.37 63.41 63.41 94.62 140.8 94.62 171.2 238.1  
26 26 0.312 0.5 0.375          
85.6 136.2 102.6            
28 28 0.312 0.5 0.625 0.375        
92.26 146.8 182.7 110.6          
30 30 0.25 0.312 0.312 0.5 0.625 0.375    
79.43 98.93 98.93 157.5 196.1 118.6      
32 32 0.312 .5 0.625 0.375 0.688      
105.6 168.2 209.4 126.7 230.1        
34 34 0.312 0.5 0.625 0.375 0.688      
112.3 178.9 222.8 134.7 244.8        
36 36 0.312 0.625 0.375 0.75        
118.9 236.1 142.7 282.3          
40 40 0.375              
158.7                
42 42 0.375              
166.7                
48 48 0.375              
190.7                
Size O.D. Inches 5s SCH 5 10s SCH 10 20 30 40s & STD SCH 40

Refer SS 304L Schedule 40 pipe thickness, UNS S30403 Stainless Steel ERW Pipe Mechanical Strength.

AISI 304L Square Pipe Mechanical Strength Table

Density 8.0 g/cm3
Melting Point 1400 °C (2550 °F)
Tensile Strength Psi - 75000 , MPa - 515
Yield Strength (0.2%Offset) Psi - 30000 , MPa - 205
Elongation 35 %

Equivalent Grades of 304L Stainless Steel Tube

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
304L S30403 304S11 58E 1.4307 X5CrNi18-10 2332 SUS 304L
Provide SS Grade 304L EFW Pipes in 3LPE/FBE/ DFBE Coating, Exporter of DIN 1.4307 Material, View 304L stainless steel pipe pressure rating.

Pressure Rating of SA 312 TP 304L ERW Pipe

Pipe Size
(inches)		 Pipe Schedule Temperature (oF)
100 200 300 400 500 600 650 700 750
1" 160 6140 5296 4759 4375 4068 3876 3761 3684 3646
80 4213 3634 3265 3002 2791 2659 2580 2528 2501
40 3048 2629 2362 2171 2019 1924 1867 1824 1810
1 1/2" 160 4619 3984 3580 3291 3060 2916 2829 2772 2743
80 3182 2744 2466 2267 2108 2009 1949 1909 1889
40 2257 1947 1750 1608 1496 1425 1383 1354 1340
2" 160 4499 3880 3486 3205 2980 2840 2755 2699 2671
80 2747 2369 2129 1957 1820 1734 1682 1648 1631
40 1902 1640 1474 1355 1260 1201 1165 1141 1129
3" 160 3840 3312 2976 2736 2544 2424 2352 2304 2280
80 2553 2202 1979 1819 1691 1612 1564 1532 1516
40 1806 1558 1400 1287 1196 1140 1106 1084 1072
4" 160 3601 3106 2791 2566 2386 2273 2206 2161 2138
80 2213 1909 1715 1577 1466 1397 1355 1328 1314
40 1531 1321 1187 1091 1014 967 938 919 909
5" 160 3414 2945 2646 2433 2262 2155 2091 2049 2027
80 1981 1709 1535 1411 1312 1250 1213 1189 1176
40 1342 1158 1040 956 889 847 822 805 797
6" 160 3289 2836 2549 2343 2179 2076 2014 1973 1953
80 1913 1650 1483 1363 1267 1208 1172 1148 1136
40 1219 1052 945 869 808 770 747 732 724
8" 160 3175 2738 2460 2262 2103 2004 1944 1905 1885
80 1692 1459 1311 1205 1121 1068 1036 1015 1005
40 1073 926 832 765 711 678 657 644 637
10" 160 3147 2714 2439 2242 2085 1986 1927 1880 1868
80 1609 1388 1247 1147 1066 1016 986 966 956
40 974 840 755 694 645 615 596 584 578

304L Stainless Steel Pipe Wall Thickness

NPS O.D. Wall Thk.   Wght Wght
millimeter in millimeter in Sch. Lb/feet kg/Metre
1/2″ 21 0.840 2.769 0.109 40 STD 0.851 1.268
      3.734 0.147 80 STD 1.088 1.621
3/4″ 27 1.050 2.870 0.113 40 STD 1.131 1.684
      3.912 0.154 80 STD 1.474 2.195
1″ 33 1.315 3.378 0.133 40 STD 1.679 2.501
      4.547 0.179 80 STD 2.172 3.325
1 1/4″ 42 1.660 3.556 0.140 40 STD 2.273 3.385
      4.851 0.191 80 STD 2.997 4.464
1 1/2″ 48 1.900 3.683 0.145 40 STD 2.718 4.048
      5.080 0.200 80 STD 3.361 5.409
2″ 60 2.375 3.912 0.154 40 STD 3.653 5.441
      5.537 0.218 80 STD 5.022 7.480
2 1/2″ 73 2.875 5.516 0.203 40 STD 5.793 8.629
      7.010 0.276 80 STD 7.661 11.411
3″ 89 3.500 5.486 0.216 40 STD 7.576 11.284
      7.620 0.300 80 STD 10.253 15.272
4″ 114 4.500 6.020 0.237   10.790 16.073
      8.560 0.337   14.983 22.318
6″ 168 6.625 4.775 0.188   12.924 19.252
      5.516 0.203   13.923 20.739
      5.563 0.219   14.983 22.318
      6.350 0.250   17.021 25.354
      7.112 0.280 40 STD 18.974 58.263
      7.925 0.312   21.036 31.334
      9.525 0.375   25.031 37.285
      10.973 0.432 80 XHY 28.573 42.561
      12.700 0.500   32.708 48.719
8″ 219 8.625 4.775 0.188   16.940 25.233
      5.156 0.203   18.259 27.198
      5.563 0.219   19.661 29.286
      6.350 0.250 20 22.361 33.308
      7.036 0.277 30 24.696 36.786
      8.179 0.322 40 28.554 42.352
      9.525 0.375   33.041 49.216
      10.312 0.406 60 35.638 53.085
      12.700 0.500 80 XHY 43.388 64.627
10″ 273 10.750 4.775 0.188   21.207 31.588
      5.563 0.219   24.631 36.689
      6.350 0.250 20 28.035 41.759
      7.798 0.307 30 34.240 51.002
      8.738 0.344   38.231 56.946
      9.271 0.365 40 STD 40.483 63.301
      11.125 0.438   48.238 71.852
      12.700 0.500 60 XHY 54.735 81.530
      15.088 0.594 80 64.429 95.969
12″ 324 12.750 4.775 0.188   25.222 37.570
      5.563 0.219   29.309 43.657
      6.350 0.250   33.375 49.713
      7.137 0.281   37.420 55.739
      7.925 0.312   41.445 61.735
      9.525 0.375   49.562 73.824
      10.312 0.406   53.525 79.727
      12.700 0.500   65.415 97.438
      14.275 0.562   73.154 108.966
14″ 356 14.000 4.775 0.188   27.732 41.308
      5.563 0.219   32.233 48.012
      6.350 0.250 20 36.713 54.685
      7.137 0.281   41.172 61.327
      7.925 0.312   45.611 67.939
      9.525 0.375 STD 54.568 81.281
      11.125 0.438 40 63.441 94.498
      12.700 0.500 XHY 72.090 107.381
      15.875 0.625   89.278 132.983
16” 406 16.000 4.775 0.188   21.748 47.290
      5.563 0.219   36.910 54.980
      6.350 0.250 10 42.053 62.639
      7.137 0.281   47.174 70.268
      7.925 0.312 20 52.275 77.866
      8.738 0.344   57.519 85.677
      9.525 0.375

30

STD

 62.578 93.213
      11.125 0.438   72.797 108.433
      12.700 0.500

40

XHY

 82.770 123.289
18″ 457 18.000 5.563 0.219   41.588 61.948
      6.350 0.250   47.393 70.593
      7.137 0.281   53.176 79.208
      7.925 0.312 20 58.939 87.792
      9.525 0.375 STD 70.588 105.144
      11.125 0.438 30 82.152 122.369
      12.700 0.500 XHY 93.450 139.198
      14.275 0.562 40 104.666 155.904
      15.875 0.625   115.978 172.754
20″ 508 20.000 6.350 0.250   52.733 78.547
      7.163 0.282   59.386 88.458
      7.925 0.312   65.604 97.719
      9.525 0.375 20 STD 78.598 117.075
      11.125 0.438   91.508 136.305
      12.700 0.500 30 XHY 104.130 155.106
      15.088 0.594 40 123.110 183.378
      15.875 0.625   129.328 192.640
      17.475 0.688   141.901 211.368
24″ 610 24.000 6.350 0.250   63.413 94.456
      7.137 0.281   71.183 106.029
      7.925 0.312   18.932 117.573
      9.525 0.375 20 STD 64.618 140.938
      11.125 0.438   110.219 164.176
      12.700 0.500 XHY 125.490 186.923
      15.875 0.625   156.028 232.410
      17.475 0.688 40 171.293 255.148
      19.050 0.750   186.233 277.401
30″ 762 30.000 6.350 0.250   79.433 118.318
      7.137 0.281   89.189 132.851
      7.925 0.312 10 98.925 147.353
      9.525 0.375 STD 118.648 176.731
      11.125 0.438   138.286 205.983
      12.700 0.500 20 XHY 157.530 234.647
      15.875 0.625 30 196.078 292.066
      17.475 0.688   215.380 320.817
      19.050 0.750   234.293 348.988
36″ 914 36.000 6.350 0.250   95.453 142.180
      7.137 0.281   107.196 159.672
      7.925 0.312 10 118.918 177.133
      9.525 0.375 STD 142.678 215.525
      11.125 0.438   166.353 247.790
      12.700 0.500 20 XHY 198.570 282.372
      15.875 0.625   236.128 351.723
      17.475

0.688

   259.467 386.487
      19.050

0.750

   282.353 420.576
42″ 1067 42.000 7.925 0.312   138.911 206.914
      9.525 0.375 STD 166.708 248.319
      12.700 0.500 XHY 221.610 33.097
      19.050 0.750   330.413 492.163
48″ 1219 48.000 9.525 0.375 STD 190.738 284.112
      11.125 0.438   222.487 331.404
      12.700 0.500 XHY 253.650 377.822
      19.050 0.750   378.473 563.750
      22.225 0.875   440.383 655.969