Carbon steel, also called plain-carbon steel, is steel where the main alloying constituent is carbon. The American Iron and Steel Institute (AISI) defines carbon steel as: "Steel is considered to be carbon steel when no minimum content is specified or required for chromium, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium or zirconium, or any other element to be added to obtain a desired alloying effect; when the specified minimum for copper does not exceed 0.40 percent; or when the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, copper 0.60."

The term "carbon steel" may also be used in reference to steel which is not stainless steel; in this use carbon steel may include alloy steels.

As the carbon content rises, steel has the ability to become harder and stronger through heat treating, but this also makes it less ductile. Regardless of the heat treatment, higher carbon content reduces weldability. In carbon steels, the higher carbon content lowers the melting point.

     Applications

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 and Tubes Products

     A53 A106 API5L Grade B/C X42 Seamless Pipe

Size Range : 1/8" - 26"  Schedules :20, 30, 40, Standard (STD), Extra Heavy (XH), 80, 100, 120, 140, 160, XXH Grades : ASTM A53 Gr B, ASME SA53 Gr B, API-5L Gr B, ASTM A106 Gr B, ASME SA106 Gr B, ASTM A106 Gr C, PSL 1 and PSL2

     API5L X-42 X-52 X-60 Seamless Pipe

Size Range : 2" - 24"  Schedules : Standard (STD), Extra Heavy (XH), 100, 120, 160, XXH Grades : PSL1 and PSL2

     A333 (Low Temp) Grade 1/6 Carbon Steel Seamless Pipe

Size Range : 1/2" - 24"  Schedules :Standard (STD), Extra Heavy (XH), 100, 120, 160, XXH

     A53 API5L Grade B X-42 X-52 X-60 ERW (Electric Resistance Welded) Pipe

Size Ranges :2" - 24"  Schedules : 10, 20, Standard (STD), Extra Heavy (XH)  Non-Schedules : .120wall, .156wall, .188wall, .203 wall, .219wall etc.  Grades : API-5L Gr B, API-5L Gr X42, API-5L Gr X52, API-5L Gr X60, API-5L Gr X65PSL1 and PSL2

     API5L Grade B X-42 X-52 X-60 DSAW/SAW

Size Ranges :26" - 60"  Schedules : 20, Std, XH, 30,  Grades : API-5L Gr B, API-5L Gr X42, API-5L Gr X52, API-5L Gr X60, API-5L Gr X65PSL1 and PSL2 Sizes (Seamless): 1/2" NB - 60" NB Sizes (ERW): 1/2" NB - 24" NB Sizes (SAW): 16" NB - 100" NB   Wall Thickness available: Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk

     Material Grades

High Temperature Seamless Pipe	ASTM A106 Gr. B/C, API 5L Gr. B, ASTM A53 Gr. B
Heat Exchanger Seamless Tube	ASTM A179
Low Temperature Seamless Pipe	ASTM A333 Gr. 3/6
Low Temperature Seamless Tube	ASTM A334 Gr. 6
High Yield Seamless Pipe	API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2
High Yield Seamless Pipe	ISO 3183 Gr.L245, L290, L320, L360, L390, L415, L450, L485
Atmospheric & Low Temp EFW Pipes	ASTM A671 Gr. CC60/CC65/CC70
High Pressure & Moderate Temp EFW Pipes	ASTM A672 Gr. B60/B65/B70/C55/C60/C65/C70
High Yield ERW/SAW Pipe	API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2
High Yield ERW/SAW Pipe	ISO 3183 Gr.L245, L290, L320, L360, L390, L415, L450, L485

     Additional Testing :

  NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.

    Dimensions :

   All Pipe is manufactured and inspected/tested to the relevant standards including ASTM, ASME, API