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  • Cangzhou Steel Pipe Group (CSPG) Co., Ltd.
  • ADD:No.92 Jiefang East Rd., Cangzhou City, Hebei Province, China
  • TEL:+86-31-75673271
  • MOBILE:+8615373302068
  • E-MAIL:ella@cnspipe.com
  • SMLS Carbon Pipe

    A106: Chemical components and mechanical property Carbon Steel Pipe Cangzhou Steel Pipe offers a wide-range of carbon steel pipe products. The term carbon steel pipe is quite broad in scope and can be used to describe a wide range of metal tubular goods whose main alloying element is carbon....
    Product Details:

    Product Name

    black steel pipe schedule 10 20 40 80 120 Carbon seamless steel pipe A106 Gr.B

    Outer Diameter

    1/2" to 28" ( 15-713mm )

    Wall thickness



    Max 16 meters



    Steel Grade

    ASTM A 106 GRB/A53 GRB/st 20# 10# 45#


    plastic cap in bundle or in bulk or seaworthy packing or as per customers' requirement


    Petroleum , power , gas metallurgy , papermaking , chemical , medical equipment , avaiation , boilerheat , exchanger , shipbuilding , construction , etc


    plain ends , bevelled , grooved


    Bared / black painted / galvanized


    cold drawn





    Chemical components

    Mechanical property


    Strength (Mpa)













    ≤ 0.06









    B≤0.30/≤1.2≤0.05≤0.06≤0.40≤0.40≤0.15≤0.40≤0.08≥415 ≥240≥29.5

    A106: Chemical components and mechanical property


    Trade mark 

    Chemical   components

    Mechanical property








     Tensile Strength































    Carbon Steel Pipe

    Cangzhou Steel Pipe offers a wide-range of carbon steel pipe products. The term carbon steel pipe is quite broad in scope and can be used to describe a wide range of metal tubular goods whose main alloying element is carbon. Although many of the same manufacturing principles apply to both carbon steel pipe and various similar alloy tubular goods, the focus of this narrative will be on the manufacturing process of mild carbon steel pipe goods commonly used for oil and gas as well as water transmission, structural applications, general purpose casing, piling, and mechanical components.

    Carbon steel pipe starts out by arriving at the pipe mill in the form of either a billet (basically a large solid steel bar) or a coil (imagine a roll of toilet paper made out of steel). Depending on the manufacturing method used by the mill, these billets or coils will be processed to yield the finished end product. We will examine the various manufacturing methods used to make carbon steel pipe, but first let's look at how the carbon steel got here in the first place.

    Raw steel manufacturing process

    Humans have been melting iron ore through a process called smelting for thousands of years. Molten or semi-molten iron would be hammered (forged) or poured into their desired shapes and allowed to cool. People quickly discovered that the properties of the finished product (strength, ductility, longevity) could be controlled in many ways; manipulating cooling time and conditions or adding/removing certain media for example. Carbon steel was one such popular derivative of raw iron made by introducing elemental carbon into the smelting process in the form of charcoal. As useful as steel was, it was time and labor intensive to produce, thus making it generally a poor material for mass consumption. In the mid 19th century, the Bessemer process was patented where by molten pig iron (cheaply made and full of high carbon, silicon, and manganese impurities) is subject to blasts of oxygen which oxidize the impurities thus making them simple to remove from the molten steel. This method of removing excess elements was much easier and cheaper than adding alloying elements to iron, and is directly responsible for the industrial revolution and the beginning of the mass production of carbon steel. Today the technology has changed, but the same basic principles of the Bessemer Process are still the backbone for modern raw steel production.

    Modern steel mills produce steel by either melting scrap metal or adding coke (pulverized coal with the hydrocarbons removed) to smelted iron ore. The molten metal is subject to a modern derivative of the Bessemer Process to remove undesirable elements, other desirable elements are then added (depending on the final desired properties of the steel), and then the steel is cast and cooled into which ever shape the customers desire. As mentioned prior, in the case of carbon steel pipe these casts are typically in the form of coils or billets.

    Time to make the pipe

    Billets and coils are delivered to the pipe mill ready to be made into carbon steel pipe. Depending on the capabilities of the pipe mill and the end use of the final product, the casts will be formed into pipe by means of four distinct different manufacturing methods; seamless, electric resistance weld (ERW), double submerged arc weld (DSAW), or spiral weld.


    Seamless carbon steel pipe

    Seamless carbon steel pipe has, as its name implies, no longitudinal weld seam. It is, in essence, one solid homogeneous piece of steel. A solid billet is simply heated and then stretched over a series of mandrels until the pipe has achieved its desired diameter and wall thickness. Typically seamless carbon steel pipe fourteen inches and greater in diameter are rolled from shells which expand the diameter and reduce the wall until the desired dimensions are achieved. Sizes smaller than fourteen inches in diameter are typically stretch reduced whereby the diameter is gradually reduced and the wall relatively increased via a series of rolls. There is also a cold forming process for seamless pipe production, but such manufacturing processes are typically reserved for different alloys. Being that there is no seam, seamless carbon steel pipe is typically used in high pressure applications. Common seamless specs include; API5LB, A106, A333.

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