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Alloy Steel Seamless Pipes & Tubes

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    Alloy Steel Pipe Manufacturer in India, ASTM A335 Alloy Steel Tube, Alloy Steel Boiler Tube, Alloy Steel High-Pressure Pipe Exporter, ASTM A691 Alloy Steel Seamless Pipe Supplier in India.

    Solitaire Steel is a leading supplier of high-quality Alloy Steel Pipes and Tubes, available in both seamless and welded options. Alloy Steel Seamless Pipes are crafted from a single solid billet, ensuring no welded seams, and range in size from ½ to 26mm with wall thicknesses from 0.3 to 50mm. These pipes are durable, corrosion-resistant, and can come with beveled or plain ends. The seamless variety, which can handle 20% more working pressure than welded pipes, is generally more expensive due to its strength.

    We also offer Alloy Steel Welded Pipes, made by welding sections of steel longitudinally. These are more economical than seamless pipes and are ideal for applications where high working pressure isn’t as critical.

    Alloy steels are divided into two categories:

    • Low Alloy Steel: Contains up to 5% alloying elements, providing moderate strength and corrosion resistance.
    • High Alloy Steel: Contains 5-50% alloying elements, offering higher durability and corrosion resistance for demanding environments.

    For high-temperature applications (up to 500°C), such as on drilling rigs, High Temperature Alloy Steel Boiler Pipes are used for their ability to withstand internal and external pressure. Alloy steel performs better than carbon steel and is more cost-effective than stainless steel, though it has moderate corrosion resistance compared to stainless.

    Solitaire Steel offers competitive pricing on ASTM A335 Alloy Pipes and is committed to providing reliable, high-quality alloy pipes.

    Alloy Steel Pipe Specification

    Specifications ASTM A 335 ASME SA 335
    Dimensions ASTM, ASME and API
    Size 1/8″NB TO 30″NB IN
    Tubing Size 1 / 2” OD up to 5” OD, customs diameters also available
    Outer Diameter 6-2500mm; WT:1-200mm
    Schedule SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
    Grade ASTM A335 Gr. P5, P9, P11, P12, P21, P22 & P91, ASTM A213 – T5, T9, T11, T12, T22, T91, ASTM A691
    Length Within 13500mm
    Type Seamless / Fabricated
    Form Round, Hydraulic Etc
    Length Single Random, Double Random & Cut Length.
    End Plain End, Beveled End, Treaded

    Alloy Steel Pipes Chemical Composition

    Grade C Cr Mn Mo P S Si
    Alloy Steel 0.05 – 0.15 1.00 – 1.50 0.30 – 0.60 0.44 – 0.65 0.025 max 0.025 max 0.50 – 1.00

    Mechanical Properties of Alloy Steel Pipes

    Tensile Strength, MPa Yield Strength, MPa Elongation, %
    415 min 205 min 30 min

    Alloy Steel Pipe Pressure Rating

    Maximum Allowable Pressure (psi)
    NPS Outside Diameter Schedule
    (in) (in) 10 20 30 STD 40 60 XS 80 100 120 140 160 XXS
    1/4 0.54       7985 7985   10798 10798          
    3/8 0.675       6606 6606   9147 9147          
    1/2 0.84       6358 6358   8575 8575       10908 17150
    3/4 1.05       5273 5273   7187 7187       10220 14373
    1 1.315       4956 4956   6670 6670       9316 13340
    1 1/4 1.66       4133 4133   5638 5638       7380 11276
    1 1/2 1.9       3739 3739   5158 5158       7247 10316
    2 2.375       3177 3177   4498 4498       7097 8995
    2 1/2 2.875       3460 3460   4704 4704       6391 9408
    3 3.5       3024 3024   4200 4200       6132 8400
    3 1/2 4       2769 2769   3896 3896          
    4 4.5       2581 2581   3670 3670   4769   5782 7339
    5 5.563       2273 2273   3303 3303   4404   5505 6606
    6 6.625       2071 2071   3195 3195   4157   5318 6390
    8 8.625   1420 1574 1829 1829 2307 2841 2841 3375 4085 4613 5147 4971
    10 10.75   1140 1399 1664 1664 2279 2279 2708 3277 3847 4558 5128 4558
    12 12.75   961 1268 1441 1560 2160 1922 2644 3244 3843 4324 5042 3843
    14 14 875 1092 1313 1313 1533 2079 1750 2625 3283 3829 4375 4921  
    16 16 766 956 1148 1148 1531 2009 1531 2585 3157 3733 4404 4882  
    18 18 681 849 1192 1021 1530 2042 1361 2553 3147 3743 4252 4848  
    20 20 613 919 1225 919 1455 1989 1225 2526 3138 3675 4288 4824  
    22 22 557 835 1114 835   1949 1114 2506 3063 3619 4176 4733  
    24 24 510 766 1147 766 1405 1978 1021 2489 3126 3700 4210 4786  
    30 30 510 817 1021 613     817            
    32 32 478 766 957 574 1054                
    34 34 450 721 901 540 992                
    36 36 425 681 851 510 1021                
    42 42   583 729 438 875                
                                 

    Alloy Steel Pipe Weight

    Size NPS Pipe O.D. Wall Tdickness Pipe I.D. Weight per Foot Standard to XXHY Schedule
    Pipe #     		Section Modulus Gallon Capacity Per Linear Foot
    1/2 0.84 0.109 0.622 0.85 STD 40 .0407 .0158
        0.147 0.546 1.09 XHY 80 .0478 .0122
        0.188 0.464 1.31   160 .0528 .0088
        0.294 0.252 1.72 XXHY   .0577 .0026
    3/4 1.05 0.113 0.824 1.13 STD 40 .0705 .0277
        0.154 0.742 1.48 XHY 80 .0853 .0225
        0.219 0.612 1.95   160 .1006 .0153
        0.308 0.434 2.44 XXHY   .1103 .0077
    1 1.315 0.133 1.049 1.68 STD 40 .1328 .0449
        0.179 0.957 2.17 XHY 80 .1606 .0374
        0.250 0.815 2.85   160 .1904 .0271
        0.358 0.599 3.66 XXHY   .2136 .0146
    1 1/4 1.66 0.140 1.380 2.27 STD 40 .2346 .0777
        0.191 1.278 3.00 XHY 80 .2913 .0666
        0.250 1.160 3.77   160 .3421 .0549
        0.382 0.896 5.22     .4110 .0328
    1 1/2 1.90 0.145 1.610 2.72 STD 40 .3262 .1058
        0.200 1.500 3.63 XHY 80 .4118 .0918
        0.281 1.338 4.86   160 .5079 .0730
        0.400 1.100 6.41     .5977 .0494
    2 2.375 0.109 2.157 2.64   10 .4205 .1898
        0.154 2.067 3.66 STD 40 .5606 .1743
        0.218 1.939 5.03 XHY 80 .7309 .1534
        0.250 1.875 5.68     .8045 .1434
        0.281 1.813 6.29     .8666 .1344
        0.344 1.687 7.47   160 .9806 .1161
        0.436 1.503 9.04 XXHY   1.1043 .0922
    2 1/2 2.875 0.120 2.635 3.53   10 .6870 .2833
        0.203 2.469 5.80 STD. 40 1.0640 .2487
        0.216 2.443 6.14     1.1169 .2435
        0.250 2.375 7.02     1.2468 .2301
        0.276 2.323 7.67 XHY 80 1.3386 .2202
        0.375 2.125 10.02   160 1.6371 .1842
        0.552 1.771 13.71 XXXHY   1.9971 .1280
    3 3.50 0.120 3.260 4.34     1.0411 .4336
        0.156 3.188 5.58     1.3122 .4147
        0.172 3.156 6.12     1.4265 .4064
        0.188 3.124 6.66     1.5342 .3984
        0.216 3.068 7.58 STD. 40 1.7241 .3840
        0.250 3.000 8.69     1.9372 .3672
        0.281 2.938 9.67     2.1207 .3521
        0.300 2.900 10.26 XHY 80 2.2253 .3431
        0.438 2.624 14.34   160 2.8774 .2811
        0.600 2.300 18.6 XXHY   3.4243 .2158
    3 1/2 4.0 0.120 3.760 4.98   10 1.3776 .5768
        0.226 3.548 9.12 STD. 140 2.3939 .5136
        0.250 3.500 10.02     2.6001 .4998
        0.281 3.438 11.17     2.8562 .4821
        0.318 3.364 12.52 XHY 80 3.1400 .4617
        0.636 2..728 22.87 XXHY   4.8795 .3085
    4 4.5 0.120 4.260 5.62   10 1.7612 .7404
        0.156 4.188 7.24     2.2354 .7156
        0.188 4.124 8.67     2.6296 .6942
        0.203 4.094 9.32     2.8173 .6838
        0.219 4.062 10.02     3.0184 .6725
        0.237 4.026 10.80 STD. 40 3.2145 .6613
        0.250 4.000 11.36     3.3611 .6528
        0.281 3.938 12.67   60 3.7021 .6326
        0.312 3.876 13.97     4.0273 .6126
        0.337 3.826 15.00 XHY 80 4.2713 .5972
        0.438 3.624 19.02   120 5.1790 .5361
        0.531 3.438 22.53   160 5.8997 .4822
        0.674 3.152 27.57 XXHY   6.7927 .4054
    5 5.563 0.188 5.187 10.80     4.1161 1.0979
        0.219 5.125 12.51     4.7279 1.0716
        0.258 5.047 14.63 STD. 40 5.4500 1.0391
        0.281 5.001 15.87     5.8644 1.0204
        0.312 4.939 17.51     6.4074 .99647
        0.344 4.875 19.19     6.9358 .9696
        0.375 4.813 20.80 XHY 80 7.4300 .9449
        0.500 4.563 27.06   120 9.2534 .8495
        0.625 4.313 32.99   160 10.7976 .7590
        0.750 4.063 38.59 XXHY   12.0954 .6734
    6 6.625 0.109 6.407 7.59   5 3.5769 1.6748
        0.134 6.357 9.30   10 4.3475 1.6488
        0.156 6.313 10.79     5.0107 1.6260
        0.188 6.249 12.94     5.9351 1.5937
        0.203 6.219 13.94     6.3804 1.5780
        0.219 6.187 15.00     6.8261 1.5620
        0.250 6.125 17.04     7.6905 1.5306
        0.280 6.065 18.99 STD. 40 8.4958 1.5008
        0.312 6.001 21.06     9.3416 1.4688
        0.344 5.937 23.10     10.111 1.4391
        0.375 5.875 25.05     10.893 1.4082
        0.432 5.761 28.60 XHY 80 12.224 1.3541
        0.500 5.625 32.74     13.711 1.2909
        0.562 5.501 36.43   120 14.9806 1.2346
        0.625 5.375 40.09     16.1821 1.1787
        0.719 5.187 45.39   160 17.8243 1.0977
        0.864 4.897 53.21 XXHY   20.025 .9784
        1.000 4.625 60.13     21.7719 .8727
        1.125 4.375 66.14     23.1237 .7809

    Alloy Steel Grade Pipes Heat Treatment

    P5, P9, P11, and P22
    Grade Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing  or Tempering Temperature Range F  [C]
    P5 (b,c) Full or Isothermal Anneal
    Normalize and Temper ***** 1250 [675]
    Subcritical Anneal (P5c only) ***** 1325 – 1375 [715 – 745]
    P9 Full or Isothermal Anneal
    Normalize and Temper ***** 1250 [675]
    P11 Full or Isothermal Anneal
    Normalize and Temper ***** 1200 [650]
    P22 Full or Isothermal Anneal
    Normalize and Temper ***** 1250 [675]
    P91 Normalize and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]
    Quench and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]

    Alloy Steel Tubes Application Industries

    Alloy steel pipes have versatile applications across several industries due to their strength and corrosion resistance. In the oil and gas industry, they’re essential for drilling operations and transporting oil and gas. They’re also widely used in chemical processing, power plants, and aerospace for their durability under high pressure and temperature. Common uses include heat exchangers, boilers, and superheater tubes, where high-temperature stability and pressure tolerance are crucial. Alloy steel’s ability to withstand tough conditions makes it ideal for demanding industrial applications.

    Supply and Exporter Alloy Steel Tube & Pipe

    Taiwan, Mexico, Iran, Namibia, Afghanistan, Netherlands, Nepal, Ireland, Libya, Morocco, Iran, Switzerland, Finland, Slovakia, Pakistan, Australia, Serbia, Angola, China, Philippines, Czech Republic, Belgium, Estonia, Costa Rica, Croatia, Sweden, Venezuela, Colombia, India, Belarus, Jordan, Azerbaijan, Mongolia, Vietnam, Ghana, Iraq, Algeria, Puerto Rico, New Zealand, Singapore, Indonesia, Ukraine, Israel, Mexico, Hong Kong, Bhutan, Germany, Brazil, Plan, Yemen, Malasiya, USA, Cambodia, Laos, Uganda, Tanzania, Sudan, Democratic Republic of Congo, zambia, Ethiopia, Brunei, Madagascar, Niger, Mali, Bangladesh, Bolivia, United States, Ecuador, Lebanon, Italy, South Korea, Denmark, Norway, Sri Lanka, Zimbabwe, Japan, Yemen, Oman, Portugal, Lithuania, Canada, Macau, Bahrain, Austria, Bulgaria, Spain, Kenya, United Kingdom, United Arab Emirates, Kazakhstan, Egypt, Saudi Arabia, Gambia, Argentina, Romania, Tibet, France, Chile, Gabon, South Africa, Trinidad & Tobago,Tunisia, Turkey, Nigeria, Peru, Russia, Chile, Nigeria, Hungary, Qatar, Greece, Malaysia, Kuwait, Poland, Thailand, Poland,Germany, Belgium, Italy, Turkey, Denmark and UK.

    FAQs

    Alloy steel pipes are made from steel alloyed with various elements, such as nickel, manganese, silicon, or chromium, to enhance specific properties. These pipes are used for added strength, durability, and resistance to wear or corrosion in demanding applications.

    Steel tubing often uses alloys such as T304 and T316, part of the 300 series of stainless steel. These austenitic iron alloys include nickel in addition to chromium and carbon. T304, known as 18/8, contains 18% chromium and 8% nickel and is considered the classic stainless steel alloy.

    Steel tubes can be either cold rolled or hot rolled, while pipes are typically hot rolled. Tubes have precise tolerances and are often used in structural applications. Pipes are primarily used for transporting fluids and gas. Both can be galvanized for increased corrosion resistance.

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