CARBON STEEL PIPES, TUBES SUPPLIER, CS PIPES FOR HIGH TEMPERATURE SERVICE, CARBON STEEL TUBES/TUBING MANUFACTURER
ASTM A333 GRADE 6 PIPES, ASTM A106 GRADE B, ASTM A53 GRADE B, API 5L GRADE B CARBON STEEL SEAMLESS LINE PIPES AT BEST PRICE
IBR APPROVED PIPES, CARBON STEEL COLD DRAWN SEAMLESS PIPES, COLD DRAWN SEAMLESS TUBES, WELDED TUBES IN READY STOCK
Manufacturer of ASTM A106 Grade B, ASTM A333 Grade 6 CS Seamless Pipes and Carbon Steel Welded Pipes Up To 36”
Dealer price of High Quality Carbon Steel Seamless, Welded Pipes – Call: +91-22-4343 1313 Send Mail: email@example.com
- Carbon Steel (CS) Pipes & Tubes
- Popular Grades of Carbon Steel Pipes & Tubes
- Carbon Steel Pipes & Tubes Latest Price List
- Carbon Steel Pipe & Tubes Specifications
- Typical Application of Carbon Steel Pipe & Tubes
- Raw Steel Manufacturing Process
- Time To Make The Pipe
- Seamless Carbon Steel Pipe
- Carbon Steel Electric Resistance Weld (Erw)
- Carbon Steel Double Submerged Arc Weld (Dsaw)
- Carbon Steel Spiral Weld
- Types of Carbon Steel
DM Special Steel Ltd. is PED approved manufacturer & Govt. of India recognized Export House, established in 1975. We are supplier of Pipes, Tubes, Casing, Tubing, Pipe Connection, Tubular & Oil – gas piping materials for CBM field, Oil & Gas field, exploration drilling sector companies.
We have a large scale unit engaged in stocking and exporting carbon steel tubes, carbon steel pipes and carbon steel welded pipes, carbon steel welded tubes and electrogalvanized steel tubes/pipes. we supply for engineering purpose, ERW pipes for water, gas & sewerage, carbon steel tubes for idlers of belt conveyors, water wells and lancing pipes for various automotive & industrial applications.
DM Special Steel Ltd. supplies the most common grades of carbon steel pipes and tubes including ASTM A333 Gr. 6, A106 Gr. B, ASTM A53, API 5L with complete certifications and traceability
Carbon Steel Pipe
DM Special Steel Ltd. 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.
- API STD 5L GRADE B, SEAMLESS
- ASTM A 53 GRADE B, SEAMLESS, ASME SA 53 GRADE B, SEAMLESS
- ASTM A106 GRADE B, SEAMLESS, ASME SA 106 GRADE B, SEAMLESS
- ASTM A 53 GRADE B, WELDED
- API 5 LX GRADE X52, SEAMLESS
- API STD 5 L GRADE B, WELDED
- API STD 5 LX GRADE X 42, WELDED
- ASTM A 53 GRADE B, WELDED
- API 5 L GRADE B, DOUBLE SUBMERGED ARC WELDED (DSAW
- API STD 5 LX GRADE X 42, DSAW
- A-120 / A53 GRADE A WELDED
Carbon Steel Pipes
- Size Range: 1/2” NB to 36” NB
- Thickness: SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
- Carbon Steel Pipe Specifications: ASTM A/ASME SA 53 Grade A, B | ASTM A/ASME SA 106 Grade A, B, C | ASTM A/ASME SA 333 Grade 1, 6 | API 5L – PSL 1 Gr. A, B, X42, X46, X52, X56, X60, X65, X70 | API 5L – PSL 2 Gr. B, X42, X46, X52, X56, X60, X65, X70
- Applications: Oil Refineries, Petrochemicals, Power Generation (Nuclear/Thermal), Steel, Sugar, Boiler Equipments, Pressure Vessels and General Engineering Purposes
Carbon Steel Tubes/Tubing
- Specifications: ASTM A/ASME SA 179 | ASTM A/ASME SA 192, ASTM A/ASME SA 210 Gr. 1, C | BS 3059 PART II GR. 360, 440, 620 | DIN 2391, ST 35, ST 37, ST 45, ST 52
- Size Range: 1/2” to 6”, both OD and NB sizes available
- Thickness: 50mm to 7.00mm, custom OD and thickness available on request
End Connections for Line Pipes: Plain, Bevel, Screwed, Threaded
Type: Seamless / ERW / Welded / Fabricated / CDW
Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
Length: Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths
End: Plain End, Beveled End, Treaded
End Protection: Plastic Caps
Outside Coating: Black Painting, Anti-Corrosion Oil, Galvanised Finish, Finish as per customer Requirements
Carbon Steel is used in the most critical engineering applications and also in certain applications in the automotive sector. In addition, some of the value-added Carbon Steel products include steel for LPG cylinders, API grade, corrosion resistant steel, critical structural application steel, boiler quality, auto grades, precision tubes and medium/high carbon grades, among others.
Carbon Steel Pipes in Seamless & Welded Form
- Power Plants
- Ship Building
- Heat Exchangers
- Paper & Pulp
- Marine Applications
- Nuclear Power
- Fossil Fuel Power Plants
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.
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 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
Early carbon steel pipe producers employed a manufacturing method called butt-welding. The butt-welding process was quite elementary in that it merely rolled a piece of heated steel plate into tubular form and created a longitudinal weld through compression and direct heat. In 1922 the Fetz Moon Tube Company instituted the first continuous weld line where by rolled up coils of steel (again, imagine a toilet paper roll made of steel) could be unrolled, leveled, and continuously fed down a line of rolls which would slowly bend the steel into shape eventually to a point where the ends could be butt-welded. When the mill came to the end of a coil, they could simply weld it to the beginning of the next coil with little interruption to production. As industry called for tighter tolerances and better welds, the continuous butt-weld process gave way to electric resistance welding (ERW). ERW is quite similar to the continuous weld process in that coils of steel are leveled and fed down a line of forming rolls, but that is where the similarities end. During the ERW process the unrolled coils (skelp) are not heated and the longitudinal weld is created by way of an electric current. The weld is then electronically inspected for defects, normalized so as to maintain consistency with the rest of the steel, and cooled. At this point the pipe is sometimes resized and then cut, coated, and or tested to meet the desired specifications. ERW pipe typically holds much tighter tolerances and maintains surface and wall consistency much more than seamless carbon steel pipe. Common ERW specs include; API5LB, A53, and A500
The double submerged arc weld (DSAW) process is similar to that of the ERW process in that coils of carbon steel are unrolled in a continuous ribbon. As the DSAW method of manufacturing is typically used for larger diameter pipe, the method of roll forming the skelp is similar to but not exactly like that of ERW. DSAW pipe is typically either pyramid rolled (three angled OD rolls in the shape of a pyramid form the pipe) or rolled using the U-O-E process (skelp is first subject to a "U" shaped press, followed by a "O" shaped press). The most prominent difference between ERW and DSAW carbon steel pipe is the longitudinal weld. The DSAW arc weld is submerged in a flux media to keep the weld from being exposed to ambient contaminants. Also, both the OD and the ID of the pipe is welded, typically at separate times creating a situation where one weld consumes the other creating a higher quality weld. DSAW carbon steel pipe is easily distinguishable due to its prominent and consistent ID and OD weld seam. Common DSAW specs include; API5l, A252, and A139.
The most easily distinguishable manufacturing method for carbon steel pipe is spiral weld. In this process the weld is created in the exact same manner as that of DSAW, only the weld seam takes on a helical or spiral appearance due to the way the skelp is rolled to form. Just as in the case with the ERW and DSAW process, a continuous ribbon of skelp is leveled and sent through a series of rolls to form. In the case of the spiral weld process a simple three roll bend is typical and thus makes for faster, more efficient, and less costly manufacturing process. The spiral weld process also allows the mill to roll a much wider range of sizes than DSAW or ERW mills. Also, due to its axial symmetry, spiral weld carbon steel pipe has an inherent ability to maintain straightness. Common spiral weld specs include; API5LB and A252. Contact us for your next carbon steel pipe project.
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