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MS Pipes

  • Mild steel is the least expensive of all steel and the most common steel used. Used in nearly every type of product created from steel, it is weldable, very hard and, although it easily rusts, 

    very durable. Containing a maximum of 0.29% carbon, this type of steel is able to be magnetized and used in almost any project that requires a vast amount of metal. Its structural strength prevents it from being used to create load-bearing girders and structural beams.Many of the everyday objects that are created of steel are made using mild steel, including automobile chassis, motorcycle frames, and most cookware. Due to its poor corrosion-resistance, it must be painted or otherwise protected and sealed in order to prevent rust from damaging it. A light coat of oil or grease is able to seal this steel and aid in rust control.Unlike high-carbon steel, mild steel is easily welded. The properties of the steel allow the electrical current to travel through the metal without distorting the makeup of the material. Some types of high-carbon steel, such as stainless steel, require special techniques in order to properly weld the material. Being less brittle than high-carbon steels, the mild variant is able to flex and give in construction projects where a higher-carbon version could simply break.

    Most of the pipeline in the world is created using mild steel. This allows the pipe to not only be easily welded into place, but also lets the pipeline flex and avoid cracking and breaking under pressure. The corrosive properties of the steel pipeline mean that it must be properly sealed through painting or a process often used on pipelines that involves wrapping the pipe with a corrosive-resistant material.Used for low-pressure conveyance of air, steam, gas, water, oil or other fluids and for mechanical applications. Used primarily in machinery, buildings, sprinkler systems, irrigation systems, and water wells rather than in pipelines or distribution systems.

    MS Pipe, MS Tube

    Welded or seamless pipe and tubing generally used for structural or load-bearing purposes above-ground by the construction industry, as well as for structural members in ships, trucks, and farm equipment.MS Pipe, MS Tube refers to Mild Steel Pipe or Mild Steel Tubes used for industrial and domestic use.Use : Structure (Shed, Scaffolding, Railing, Stairs, Tents, Doors), Industrial (Tools, Trolleys, Machinery, Supports, Barricading, Poles), Automobiles (Chassis, Steering, Tools, Parts), Domestic (Doors, Railings, Stairs, Decoration, Tents, Fencing), Furniture (Chairs, Table, Racks, Storage System).

    What is Pipe Schedule?

    As the main function of the pipes is to carry fluid under pressure therefore their internal diameter is their critical dimension. This critical dimension is referred to as the nominal bore (NB). Obviously, for pipes containing pressurised fluids the wall thickness, and by implication the pipe’s strength, is important. Wall thickness is expressed in “schedules“, referred to as pipe schedules. The pipe schedule is abbreviated as SCH. For a given size and schedule the thickness of the pipe is fixed and defined in the applicable ASME standard. Other than the pipe schedule, pipe thickness can also be specified in mm or inches to the value corresponding to that specified in the ASME standard.

    What Standards Govern Pipe Sizes?

    In the oil and gas and related downstream industries the most common standards are
    – ASME/ANSI B 36.10 Welded and Seamless Wrought Steel Pipe, and
    – ASME/ANSI B36.19 Stainless Steel Pipe

    Does Pipe Schedule Change with Pipe Size?

    For all pipe sizes the outside diameter remains relatively constant. Therefore any variation schedule i.e. wall thickness, affects only the inside diameter. As the schedule number increases, the wall thickness increases, and the actual bore is reduced.STD is identical to SCH 40 for NPS 1/8 to NPS 10, inclusive. XS is identical to SCH 80 for NPS 1/8 to NPS 8, inclusive. XXS wall is thicker than SCH 160 from NPS 1/8″ to NPS 6″ inclusive, and SCH 160 is thicker than XXS wall for NPS 8″ and larger.

    Pipe Schedule Charts

    The wall thickness associated with a particular schedule depends on the pipe size as can be seen from the charts below for some of the more common sized carbon steel pipes encountered.Stainless steel pipe is most often available in standard weight sizes (noted by the “S” designation, for example “NPS SCH 10S”). However stainless steel pipe can also be available in other schedules.Abbreviations used: NPS– Nominal Pipe Size, NB – Nominal bore, STD – Standard, XS – Extra Strong, XXS – Double Extra Strong.

    NPS
    inches    		 N.B. O.D.
    mm    		 10 20 30 STD 40 60 XS 80 100 120 140 160 XXS
    1/8 6 10.3 1.24 – 1.45 1.73 1.73 – 2.41 2.41 – – – – –
    1/4 8 13.7 1.65 – 1.85 2.24 2.24 – 3.02 3.02 – – – – –
    3/8 10 17.1 1.65 – 1.85 2.31 2.31 – 3.2 3.2 – – – – –
    1/2 15 21.34 2.11 – 2.41 2.77 2.77 – 3.73 3.73 – – – 4.77 7.47
    3/4 20 26.67 2.11 – 2.41 2.87 2.87 – 3.91 3.91 – – – 5.56 7.82
    1 25 33.4 2.77 – 2.90 3.38 3.38 – 4.55 4.55 – – – 6.35 9.09
    1.1/4 32 42.16 2.77 – 2.97 3.56 3.56 – 4.85 4.85 – – – 6.35 9.7
    1.1/2 40 48.26 2.77 – 3.18 3.68 3.68 – 5.08 5.08 – – – 7.14 10.16
    2 50 60.32 2.77 – 3.18 3.91 3.91 – 5.54 5.54 – – – 8.74 11.07
    2.1/2 65 73.02 3.05 – 4.78 5.16 5.16 – 7.01 7.01 – – – 9.52 14.02
    3 80 88.9 3.05 – 4.78 5.49 5.49 – 7.62 7.62 – – – 11.12 15.24
    3.1/2 90 101.6 3.05 – 4.78 5.74 5.74 – 8.08 8.08 – – – – 16.15
    4 100 114.3 3.05 – 4.78 6.02 6.02 – 8.56 8.56 – 11.12 – 13.49 17.12
    5 125 141.3 3.40 – – 6.55 6.55 – 9.52 9.52 – 12.7 – 15.87 19.05
    6 150 168.3 3.40 – – 7.11 7.11 – 10.97 10.97 – 14.27 – 18.26 21.95
    8 200 219.1 3.76 6.35 7.04 8.18 8.18 10.31 12.7 12.7 15.08 18.26 20.63 23.01 22.22
    10 250 273 4.19 6.35 7.80 9.27 9.27 12.7 12.7 15.08 18.26 21.44 25.4 28.57 25.4
    12 300 323.9 4.57 6.35 8.38 9.52 10.31 14.27 12.7 17.47 21.44 25.4 28.57 33.32 25.4
    14 350 355.6 6.35 7.92 9.53 9.52 11.12 15.09 12.7 19.05 23.82 27.79 31.75 35.71 –
    16 400 406.4 6.35 7.92 9.53 9.52 12.7 16.66 12.7 21.44 26.19 30.96 36.52 40.49 –
    18 450 457.2 6.35 7.92 11.13 9.52 14.27 19.05 12.7 23.82 29.36 34.92 39.67 45.24 –
    20 500 508 6.35 9.53 12.70 9.52 15.08 20.62 12.7 26.19 32.54 38.1 44.45 50.01 –
    22 550 558.8 6.35 9.53 12.70 9.52 15.87 22.22 12.7 28.57 34.92 41.27 47.62 53.97 –
    24 600 609.6 6.35 9.53 12.70 9.52 17.47 24.61 12.7 30.96 38.89 46.02 52.37 59.54 –
    26 650 660.4 7.92 12.70 – 9.52 – – 12.7 – – – – – –
    28 700 711.2 7.92 12.70 15.88 9.52 – – 12.7 – – – – – –
    30 750 762 7.92 12.70 15.88 9.52 – – 12.7 – – – – – –
    32 800 812.8 7.92 12.70 15.88 9.52 17.47 – 12.7 – – – – – –
    34 850 863.6 7.92 12.70 15.88 9.52 17.47 – 12.7 – – – – – –
    36 900 914.4 7.92 12.70 15.88 9.52 19.05 – 12.7 – – – – – –
    40 1000 1016 – – – 9.53 – – 12.7 – – – – – –