Steel Flat Bar

Steel Grade:Q195,Q235,Q345,45#, S20C, SAE1010,SAE1020.SAE1045,EN8,EN 19fC45,CK45,SS400 etc
Standard:ASTM A615Gr40/60,BSS4449 Gr460B,500B etc.
Diameter: 6mm-1200mm.
Length: 3000mm-12000mm or as client's request
Tolerance: +0.5mm/-0(dia),+5mm/-0(L)
Heat treatment: Normalized / Annealed / Quenched / tempered
Surface: black,mill,polished,brush,etc
Test: Ultrasonic test according to SEP 1921-84 G3 C/c
Application: Widely used in construction industry for reinforcing concret(Express way; office building, Bridge etc) Trasportation By sea(20' 40' container), parts of larger cross-sections, crankshafts, gears.

// Product  Description //


Round steel is a long strip of steel with a solid cross section. Its specifications are expressed in millimeters in diameter. They are divided into three types: hot-rolled, forged, and cold-drawn. The hot-rolled specifications are 5.5-250 mm. They are often used as steel bars, bolts, and various Mechanical parts, round steel larger than 25 mm is mainly used to manufacture mechanical parts and seamless steel tube billets.


Carbon steel rod.jpg

Product Name  carbon steel round bar
Place of Origin Shandong, China
Standard  AiSi, ASTM, bs, DIN, GB, JIS
Grade  HRB335/HRB400/HRB500
Length   6m/9m/12m or as customer request
Tolerance  ±1%
Tensile strength300N/mm² , 360N/mm² , 435N/mm²
Technique  Hot Ribbed Steel Rebar
Price TermCIF CFR FOB EX-WORK
MOQ 1 Ton
Payment Term  30%T/T Advance + 70% Balance
Packing  Standard Sea-worthy Packing
Type   Plate
Certification ISO,CE


Chemical Composition

CCuFeMnPSiS
0.25~0.2900.2098.01.030.0400.2800.050


Mechanical Behavior

A36ultimate tensile strengthTensile strength and yield strengthBreak Elongation (in 200mm)Break Elongation (in 50mm)modulus of elasticityVolume modulus (typical value of steel)Poisson ratiomodulus of shearing
the metric system400~550MPa250MPa20.0%23.0%200GPa140GPa0.26079.3GPa
British system58000~79800psi36300psi20.0%23.0%29000ksi20300ksi0.26011500ksi



Physical Property

physical propertythe metric systemBritish system
density7.85 g/cm30.284 lb/in3


Applied Range

Bolt, riveted or welded structures for bridges, construction and oil rigs, etc.

 It is used for forming storage tanks, bin, bearing plate, fixture, ring, formwork, clamp, fixture, sprocket, cam, gear, bottom plate, forgings, decoration engineering, piles, supports, automobile and agricultural equipment, frame, mechanical parts, etc.


Peer Material

Guo Biao GBEuropean standard ENAmerican-Standard ASTMDe standard DIN, WNrday mark JISThe French standard, AFNORBS BSCanada HG
Q235BS235JRA283CSt37-2SM400AE24-240A/40B230G
Italy UNIIndia ISSwitzerland SSONORM, AustraliaNorway NSSpain UNEinternational standard ISOPortuguesa NP
Fe360BIS20621311/1312RSt360BNS12123AE235B-FNE235


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// Industry Applications //

Carbon steel is an alloy steel, mainly composed of iron, carbon and a small amount of silicon, manganese and other elements. Carbon steel is widely used in the following scenarios:


1. Construction industry

Carbon steel is widely used in the construction industry, mainly used to manufacture steel bars, steel plates and other building structural parts, such as bridges, buildings, etc. Carbon steel has very high hardness and strength, can withstand greater pressure and weight, and can ensure the structural stability and safety of the building.


2. Machinery manufacturing industry

Carbon steel is also widely used in the machinery manufacturing industry, mainly used to manufacture parts and structural parts of various mechanical equipment such as machine tools and excavators. Carbon steel has high strength and wear resistance, which is very suitable for machinery manufacturing that requires high strength and wear resistance.


3. Automobile manufacturing industry

Carbon steel is also a very common metal material in the automobile manufacturing industry, mainly used to manufacture automobile frames and structural parts. Carbon steel has high strength and durability, which can ensure the safety and service life of the car. At the same time, carbon steel also has good plasticity and weldability, which can be easily processed and assembled


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// Certificate qualification //

Every certificate is a testament to jinggong's commitment; every recognition carries the trust of our clients and the industry. We cherish these honors, and see them as the responsibility and driving force for our continued progress.

  • 京工证书)
  • 10001(1)
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// Partners //

Our products have established long- term cooperative relationships with many well-known domestic and international companies.Currently, our products are exported to regions such as the Middle East,South America, Southeast Asia,and Africa,and have gained unanimous recognition from customers both at home and abroad.

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TESTIMONIALS

The warehouse steel structure project in Texas, USA, used only ASTM A36 carbon steel from Jinggong. Its mechanical properties are stable, the material certification documents are complete, and the project supervisor approved it on the first attempt, saving us significant time and costs.

Jane Doe

Jane Doe

Carbon Steel Field

"The outdoor scaffolding systems of power plants along the Southeast Asian coast are exposed to high salt spray environments year-round. Jinggong's galvanized steel has a uniform and dense coating, and its salt spray test results far exceeded expectations. After three years of inspections, no red rust was found on any of the substrates, demonstrating its convincing corrosion resistance."

John Smith

John Smith

Galvanized Steel Sector

"Our heavy mining machinery frames require extremely high-strength steel. Jinggong supplies S355J2 steel according to the European standard EN 10025-2, which has excellent impact toughness and performs robustly under extreme loads, greatly improving equipment safety."

Sarah Wilson

Sarah Wilson

Steel Section

"Before cooperating with Jinggong, we were worried about whether Chinese steel could consistently meet JIS standards. In fact, every batch of SPHC cold-rolled coils they provided had chemical composition and mechanical property data that were completely consistent with the certificate. This rigor gave us complete peace of mind."

Michael Brown

Michael Brown

Cold-Rolled Coil

"Our newly built logistics warehouse in Canada uses PPGI from Jinggong for both the roof and wall panels. The product not only meets CSA standards, but its unique weather-resistant coating design also allows the building to maintain its excellent appearance and performance under extreme cold and sun exposure."

Emily Davis

Emily Davis

Color-Coated Steel Sheets

"From the initial carbon steel trial order to the current comprehensive cooperation on stainless steel, galvanized steel, and color-coated steel sheets, Jinggong has proven its strength with consistently stable quality and professional service. They are not only suppliers of materials, but also our reliable partners in solving material technology problems."

Robert Johnson

Robert Johnson

Aluminized Zinc Steel

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