‘Carbon and Low-alloy High-strength Steel plate’
United Steel Co. produce 'Carbon and Low Alloy High Strength Steel Sheet Plate' with high quality and competitive prices.

Carbon and Low-alloy High-strength Steel Plate is a structural steel that used in; construction of bridges, highway, industrial/civil constructions,  heavy equipments and general structural applications.

This kind of steel has very wide use. Because of the low Carbon content and without alloy element, carbon structural steel has the proper tensile strength, good toughness, plasticity, processing property.

Low alloy high strength steel also can be called common low alloy steel,low alloy structural steel. Low alloy structural steel's total alloy content usually is not more then 3%. Except for Si and Mn, there is V, Ti, Nb, Al, Cr, Ni, Re, N. (Generally, it also contains small amounts of silicon, manganese, sulfur and phosphorus.)

- One of the very commonly and popular steel plate for structural applications
- Not a expensive material which have very good performance and strengths to bear the various kind of system pressure, but does not include advanced alloy.
- Provides greater environmental corrosion resistance and are stronger than convention carbon steel also very ductile, highly formable and easy to weld.
- Its not typically made to meet a certain chemical composition, instead they are known to meet specific mechanical properties.
- Specification is intended primarily for use in structural members, where savings in weight and added durability are critical.
- The delivery station usually are hot rolled,control rolled, or Normalized.

Carbon & Low-alloy High-strength steel main grades: “S355JR, A572Gr.50, St52-3, SM570”

ASTM A36/A36M: 
- It is used in construction of bridges, highway construction and other engineering construction

ASTM A36/A36M standard main steel grade:
-A36 Carbon steel plate

ASTM A283/A283M:
- ASTM A283/A283M, Low and Intermediate Tensile Strength Carbon Steel Plates

ASTM A283/A283M Standart main steel grades:
-ASTM A283Grade A, B, C, D (A283GRA, A283GRB, A283GRC, A283GRD)

ASTM A514/A514M, A572/A572M, A573/A573M  :
- ASTM A514/A514M, High-Yield-Strength, Quenched and Tempered Alloy steel plates

ASTM A514/A514M, A572/A572M, A573/A573M Standart main steel grades:
-ASTM A514 Grade (A514GRT, A514GRS, A514GRR, A514GRQ, A514GRM)
-ASTM (A572GR42, A572GR50, A572GR55, A572GR60, A572GR65)
-ASTM A573 Grade 58,65,70 (A573GR58, A573GR65, A573GR70)

ASTM A588/A588M:
- Specification for High-Strength Low-Alloy Structural Steel, up to 50 ksi (345 MP) Minimum Yield Point, with Atmospheric Corrosion Resistance.
- It covers high-strength, low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction with atmospheric corrosion resistance.

ASTM A588/A588M  Standart main steel grades:
-ASTM A588 Grade A, B, C, K (A588GRA, A588GRB, A588GRC, A588GRK)

ASTM A633/A633M:
- Specification for Normalized High-Strength Low-Alloy Structural Steel Plates.
- It covers normalized high-strength low-alloy structural steel plates for welded, riveted, or bolted construction.

ASTM A633/A633M Standard main steel grades:
-ASTM A633 Grade A, C, D, E (A633GRA, A633GRC, A633GRD, A633GRE)

ASTM A656/A656M:
- Specification for Hot-Rolled Structural Steel, High-Strength Low-Alloy Plate with Improved Formability.
- ASTM A656/A656M specification covers the three types and four strength grades of high strength low-alloy, hot rolled structural steel plate with improved formability.

ASTM A36 standard main steel grades:
-ASTM A656 Grade 50, 60, 70, 80 (A656GR50, A656GR60,70, A656GR80)

ASTM A709/A709M:
- Specification for Structural Steel for Bridges.
- ASTM A709/A709M specification covers carbon and high-strength low alloy steel structural shapes, plates and bars, and quenched and tempered alloy steel for structural plates intended for use in bridges.

ASTM A709/A709M standard main steel grades:
-ASTM A709 Grade36, 50, 50S, 50W, HPS50W (A709GR36, GR50, GR50S, GR50W, GRHPS50W)

ASME SA36/SA36M:
- Standard Specification for Carbon Structural Steel, for welded construction of bridges and buildings, and for general structural purposes.

ASME SA36/SA36M standard main steel grades:
-ASME SA36 (SA36)

EN10025-2:
- Standard specifies the technical delivery conditions for flat and long products and semi-finished products which are meant for further processing to flat and long products of hot rolled non-alloy quality steels in the grades and qualities given chemical composition.

EN10025-4 standard main steel grades:
-S420J0, S355J2, S355K2, S355JR, S355J0, S275J0, S275J2

EN10025-3:
- Standard specifies Hot rolled products of structural steels. Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels.

EN10025-4 standard main steel grades:
-S275N, S355N, S275NL, S420N ,S355NL ,S460N, S420NL, S460N

EN10025-4:
- Standard specifies Hot rolled products of structural steels. Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels.

EN10025-4 standard main steel grades
-S275M, S355M, S275ML, S355ML, S420ML, S420M, S460M, S460ML

EN10025-6:
- Standard specifies Hot rolled products of structural steels. Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition.

EN10025-6 standard main steel grades
-S460Q, S460QL1, S460QL, S500QL, S500Q, S500QL1, S960QL 

JIS G3101:
 - Standard specifies the delivery standards for hot rolled steel for general construction of bridges, ships, vehicles and other structural parts.

JIS G3101 standard main steel grades:
JIS G3101 SS330, SS490, SS400, SS540

JIS G3106:
- Standard specifies the delivery standards for hot rolled steels with good weldability for bridges, ships, vehicles, oil storage tanks, containers and other structural parts. 

JIS G3106 stn.main steel grades:
JIS G3106 SM400A, SM400C, SM400B, SM490B, SM490A, SM490YA 

DIN 17100:
-Standard applies to steel sections (including wide flange beams), steel bars, wire rod, flat products(strip, plate, wide flats) seamless and welded, square and rectangular hollow sections, forgings and semi-finished products in the general structural steels nemed which are delivered in the hot formed or normalized condition after production.

DIN 17100 standard main steel grades:
DIN 17100 USt37-2, St37-2, St37-3, RSt37-2, St52-3..

DIN 17102:
- Standard applies to hot rolled products in the form of flats (plate, strip, wide flats), sections and bars of weldable fine grain stuctural steels exhibitng, in the as delivered condition as specified in subclause minum yield strengths of 255 to 500 n/mm referred to the lowest thickness range as specified.

DIN 17102 standard main steel grades:
DIN 17102 StE315, EStE285, TStE315, StE355, EStE315, TStE355…

GB/T700:
- GB/T700 standard applies to the general delivery status, usually used for welding, riveting, bolting engineering structure with hot-rolled steel, steel, steel and steel bar.

GB/T700 standard main steel grades:
GB/T700 Q235A, Q235B, Q235C, Q235D, Q275…

GB/T1591:
- GB/T1591 standard applies to hot rolling, controlled rolling, normalizing, normalizing tempering and quenching and tempering supply of engineering steel and general structure with thickness of not less than 3mm steel, steel and steel, steel bar, generally in the supply State use.

GB/T1591 standard stipulates that the chemical composition of low-alloy high-strength structural steel is also applicable to steel ingot, continuous casting billet, billet and its products.

GB/T1591 stn. main steel grade:
Q345A, Q345B, Q345D, Q390A, Q390B, Q390D, Q420A, Q420B, Q460D