Profile Steel
What is a Profile Steel?
Profile steel, also known as structural steel, are structural steel shapes rolled, drawn, or pressed into consistent cross-sections, used heavily in construction, infrastructure, and machinery for their strength, durability, and versatility. Common types include I-beams, angle bars, channels (PFC), and hollow sections (SHS/RHS/CHS). They are commonly produced in 6m or 12m lengths.
Download: Section Steel Theoretical Weight Chart (PDF/Excel)
GNEE STEEL is one of the largest steel product wholesalers in China. We specialise in trading:
Black steel profiles
Galvanised steel profiles
Cold-formed sections
Flat Bar
Square Bar
Round Bar
Angle
Parallel Flange Channel (PFC)
Universal Beam
C-Section
Pipe – Circle Hollow Section (CHS)
Square Hollow Section (SHS)
Rectangle Hollow Section (RHS)
Comparison of microstructure in the inside filleted area between welded H-beam and hot-rolled H-beam
Comparison between hot rolled hat-shaped steel and welded hat-shaped steel
Large H-beam production line
The size range of H-beam covers 200-800mm.
Small H-beam production line
H-beam product specification range is 100 ~ 400 mm
Light H-beam production line
H-beam product specifications range of 100 - 250mm, channel 100 ~ 250mm, angle 90 ~ 180mm.
U-beam for mining,I-beam,Angle steel,Channel steel
Extreme specification products
Hot-rolled Section Steel for Oil & Gas and Ocean Engineering Structures
| Standard | Grade | Product Category | Features and Uses |
| Q/MGB 455-2015 | SM400B, SM490B, SM490YB, Q355D |
H beam
Angle steel
Channel steel
|
Characteristic: Authenticated by GL and CCS; meets JIS G3106 and API RP2A Class II low-temp toughness; H-beams tested per JIS G0901.
Application: Mainly used for offshore oil drilling platforms.
|
| Nabors X drill project technical agreement | Q345EJ, Q345EJ-T1 |
Characteristic: High acid soluble Al requirements; testing per ASTM A370; excellent toughness and weldability.
Application: To make offshore oil drilling platforms (as per image text). |
|
| GB 712* |
A、B、D、E AH32、DH32、EH32、FH32 AH36、DH36、EH36、FH36 AH40、DH40、EH40、FH40 |
Characteristic: Excellent toughness and weldability; optional thickness direction (Z-direction) performance requirements.
Application: To make ocean, coastal, and inland area ships, fishing boats, and ocean engineering structures/bearing parts. |
|
| GB/T 1591* | Q355ME、Q390D、Q390ME、Q420C、Q420MD、Q420ME、Q460ME、Q500ME | ||
| EN10025-3* | S275NL, S355NL | ||
| EN10025-4* |
S275M、S355M、S420M S275ML, S355ML, S420ML |
||
| EN 10225* | S355G11+N/M,S355G12+N/M, S420G3+M,S420G4+M | ||
| GOST 27772* | C275, C285, C345, C345K, C375 | ||
| ASTM A131/131M* |
A、B、D、E AH32、DH32、EH32、FH32 AH36、DH36、EH36、FH36 AH40、DH40、EH40、FH40 |
Q/MGB 455-2015 Hot rolling H section steel for offshore oil drilling platform
|
Grade)
|
Yield Strength (MPa) |
Tensile strength (MPa) |
Elongation (%) |
-20°C the transverse impact toughness energy (J) |
| SM400B |
≥245(>5-16mm) ≥245(16-40mm) |
400~520 |
≥18(>5-16mm) ≥22(>16-40mm) |
≥20 |
| SM490B |
≥325(>5-16mm) ≥315(16-40mm) |
490~610 |
≥17 >5-16mm) ≥21(>16-40mm) |
≥34 |
| SM490YB |
≥365(>5-16mm) ≥355(16-40mm) |
490~610 | ≥15>5-16mm) ≥19(>16-40mm) |
≥34 |
| Q355D |
≥355(>5-16mm) ≥345(16-40mm) |
470~630 | ≥21 | ≥34 |
Nabors X drill project with Q345E hot-rolled H-beam technical agreement
| Grade | Yield Strength (MPa) | Tensile strength (MPa) | Elongation (%) | The longitudinal impact toughness KV8 (J) | Cold bending |
| Q345EJ |
≥345 (≤16mm) ≥335 (>16mm) |
470~630 |
≥21 (A50mm) ≥18 (A200mm) |
-45°C ≥34 |
D=2a (t≤16mm) D=3a (t>16mm) |
| Q345EJ-T1 |
≥345 (≤16mm) ≥335 (>16mm) |
470~630 |
≥21 (A50mm) ≥18(A200mm) |
-40°C ≥34 |
Other Grade for oil & gas and ocean engineering structure
| Standard | Grade | Yield Strength (MPa) | Tensile strength (MPa) | Elongation (%) | impact toughness energy (J) | |
| EN 10025-3 | S275NL | ≥275 | 370~510 | ≥24 | -40°C | ≥31 |
| S355NL | ≥355 | 470~630 | ≥22 | -40°C | ≥31 | |
| EN 10225 | S355G11+M | ≥355 | 460~620 | ≥22 | -40°C | ≥50 |
| S355G11+N | ||||||
| S355G12+M | -40°C | ≥50* | ||||
| S355G12+N | ||||||
| S420G3+M | ≥420 | 500~690 | ≥19 | -40°C | 60 | |
| S420G4+M | -40°C | 60* |
Note: * Transverse Charpy V-Notch impact test.
This product has beenwidely used in offshore oilplatform construction project and Oil drilling machinery.
Bridge Field Section Steel Standards and Grades)
| Standard | Grade | Product Category | Features and Uses |
| GB/T 1591 | Q345D、Q345E、Q420D、Q460E |
H-beam
Angle steel
Channel steel |
Characteristic: It has high strength, toughness and can withstand the load and impact of rolling stock, and has good fatigue resistance, low temperature toughness, atmospheric corrosion resistance, good welding performance and low notch sensitivity.
Application: Mainly used for building railways or highway bridges.
|
| GB/T 714 |
Q345qC、Q345qD、Q345qE、Q370qC、Q370qD、Q370qE Q420qC、Q420qD、Q420qE、Q460C、Q460D、Q460E |
||
| JIS G3101 | SS400、SS490、SS540 | ||
| JIS G3136 | SN490B、SN490C | ||
| JIS G3106 |
SM400C、SM490A、SM490C、SM490YA、 SM520B、SM520C、SM570 |
||
| EN 10025-3 | S275N、S275NL、S355N、S355NL、S420N、S420NL | ||
| EN 10025-4 |
S275M、S275ML、S355M、S355ML S420M、S420ML、S460M、S460ML |
||
| ASTM A709/709M | 50 [345]、50S [345S]、50W [345W] HPS 50W [HPS 345W]、HPS 70W [HPS 485W] HPS 100W [HPS 690W] |
Bridge Field Section Steel Product application examples
The hot-rolled H-beam for automobile frames (Available grades, categories and uses)
| Grade | Specification | Delivery Standard | Features and Uses |
| MGL470B |
196×149×6.3×10 300×150×6.5×9 446×150×7×12 446×199×8×12 473×151×7×10 |
MTS50007-2012-02 MTS50011-2013-01 Technology agreement |
Characteristic: High strength, strict dimensional deviation and curvature requirements.
Application: Mainly for the production of semitrailer, container trailers and cryogenic tankers' beams. |
| MGL510C |
491×146×7×11.5 492×150×7×12 504×153×10×18 251×101×4.8×5.3 |
||
| A572 (Gr50) |
W10×12、W12×14、W12×16 W12×19、W12×22 |
||
| A572 (Gr65) |
133×102×6×12 210×134×6×10 |
Characteristic: Light-weight high-strength hot-rolled H-beam with strict dimensional deviation and good surface quality requirements.
Application: Mainly used for all kinds of semi-trailers (including flat, box, tank, etc.), special-purpose frame longitudinal beams.
|
|
| A656 (Gr80) |
102×102×8×12 102×102×8×16 |
Mechanical and technological properties
| Grade | Yield Strength (MPa)ReL |
Tensile strength Rm (MPa)
|
Elongation A/%
|
Longitudinal impact energy | 180° cold bending test | |
| Temperature (°C) | KV2 (J) | |||||
| MGL470B | ≥345 | 470~630 | ≥21 | Normal temperature | ≥34 | d=2a |
| MGL510C | ≥400 | 510~660 | ≥19 | 0 | ≥34 | d=2a |
| A572 (Gr50) | ≥345 | ≥450 | ≥18 | - | - | |
| A572 (Gr65) | ≥450 | ≥550 | ≥15 | - | - | |
| A656 (Gr80) | ≥550 | ≥660 | ≥12 | - | - | |
hot-rolled H-beam for automobile frames Product applications Case
High-rise building field
| Standard | Grade | Product Category | Features and Uses |
| GB/T 1591 |
Q355B、Q355C、Q355D、Q390B、Q390C、Q390D、Q420B、Q420C、Q460C
|
H-beam)
Angle steel Channel steel) |
Characteristic: It has excellent welding, shock resistance, low temperature impact resistance, etc., and can add thickness direction performance requirements Z15\Z25、Z35.
Application: It is mainly used in the pillars and load-bearing beams of large-scale construction projects such as high-rise buildings, super high-rise buildings, large-span stadiums, airports, convention centers and steel structures. |
| GB/T 19879 |
Q345GJC、Q345GJD、Q345GJE、Q390GJC、Q390GJD、Q390GJE、Q420GJC、Q420GJD、Q420GJE、Q460GJC、Q460GJD、Q460GJE
|
||
| JIS G3136 |
SN400A、SN400B、SN400C、SN490B、SN490C
|
||
| EN 10025-2 |
S235JR/S235J0、S275JR/S275J0/S275J2、S355JR/S355JR0/S355JR2、S355K2、S450J0
|
||
| EN 10025-4 |
S275M、S275ML、S355M、S355ML、S420M、S420ML、S460M、S460ML
|
||
| GOST 27772 | C235～C375、C345K | ||
| GOST 19281 | C265～C440 | ||
| ASTM A572 /A572M | A572(Gr50)、A572(Gr55)、A572(Gr60)、A572(Gr65) |
High-rise building field Product applications Case
Boiler steel structure field
| Standard | Grade | Product Category | Features and Uses |
| GB/T 1591 | Q355B/NB、Q390B/NB、Q420B/NB、Q460B/NB |
H-beam
Angle steel
Channel steel |
Characteristic: High toughness and impact resistance, good fatigue resistance, low temperature toughness, atmospheric corrosion resistance and good weldability.
Application: Mainly used in boiler steel frame and boiler rigid beam. |
| GB/T 700 | Q235B | ||
| JIS G3101 | SS400、SS490、SS540 | ||
| JIS G3136 | SN400 (A、B、C)、SN490 (B、C) | ||
| JIS G3106 | SM400A/B/C、SM490A/B/C、SM490YA/YB、SM520B/C、SM570 | ||
| EN 10025-2 | S235JR/J0/J2、S275JR/J0/J2、S355JR/J0/J2、S450J0 | ||
| GOST 27772 | C275、C285、C345、C345K、C375、C390、C390K、C440 | ||
| ASTM A992/992M | A992 | ||
| GOST 27772 | C235～C375、C345K | ||
| GOST 19281 | C265～C440 |
Boiler steel structure field Product applications Case
The section steel for forklift truck
Available Grade, specification and uses
| Grade | Specification | Delivery standard | Features and Uses |
| Q460E | H98～H130 |
YB/T4237-2010
YB/T 4237-2010 and the user's technical delivery conditions
|
The product has high requirements for surface hardness, low temperature toughness, size tolerance and shape deviation. It's mainly used for the production of forklift portal. |
| MGC490C | J120～J160 |
Mechanical and technological properties
| Grade | Yield Strength ReL/MPa | Tensile strength Rm/MPa |
Elongation
A/% |
Impact Energy |
Hardness HB |
180° cold bending test | ||
| Test temperature (°C) | KV2 (J) | ≤16 | >16~35 | |||||
| Q460E |
≥440 |
≥550∼720 |
≥17 |
-30 |
≥34 |
- | - | - |
| MGC570C |
≥400 |
≥570 |
≥14 |
-5 |
≥27 |
≥170 |
d=2a |
d=3a |
| MGC490C |
≥335 |
≥490 |
≥16 |
0 |
≥34 |
≥140 |
d=2a |
d=3a |
Section Steel For Forklift Truck Product Applications Case
Angle steel for transmission tower (Available Grade, specification and uses)
| Grade | Specification | Delivery standard | Features and Uses |
| Q235B | ∠50 ～ ∠360 |
GB/T 700
GB/T 1591 |
Characteristic: The negative deviation of national network standard size of angle steel is 50% of that in GB/T 706. South network standard steel and national network large angle steel require positive size deviation and high surface quality.
Application: Mainly used for the production of transmission line tower.
|
| Q355B、Q355C | |||
| Q420B、Q420C | |||
| Q460B、Q460C |
Angle steel for transmission tower (Mechanical and technological properties)
| Grade |
Yield Strength ReL (MPa)
Thickness, mm |
Tensile strength
Rm /MPa |
Elongation A/%
|
Longitudinal impact energy KV2 (J) |
180° cold bending test | ||
|
≤16 |
>16∼40 |
>16∼40 |
(20°C and 0°C) KV2/J |
≤16 | >16∼40 | ||
| Q235B |
≥235 |
≥225 |
370 ~ 500 |
≥26 |
≥26 |
d=a | |
| Q355B/C |
≥355 |
≥345 |
470 ~ 630 |
≥20 |
≥20 |
d=2a | d=3a |
| Q420B/C |
≥420 |
≥410 |
520 ~ 680 |
≥19 |
≥19 |
d=2a | d=3a |
| Q460C |
≥460 |
≥450 |
550 ~ 720 |
≥18 |
≥18 |
d=2a | d=3a |
Notes:1.The Q235B yield strength is ReH;
2.The national network large angle steel's tensile strength has no upper limit.
Angle steel for transmission tower Product Applications Case
Types of Profile Steel
I-beam: Also known as an H-beam or W-beam, it consists of an I-shaped cross-section. It is widely used in construction due to its high strength and ability to withstand heavy loads.
Angle steel: Also called angle iron, it has an L-shaped cross-section with two equal legs at a 90-degree angle. It is commonly used in construction, manufacturing, and structural applications.
Channel steel: It has a C-shaped cross-section and is often used as a support or frame structure in building construction. It provides excellent load-bearing capabilities and is highly versatile.
U-shaped steel: As the name suggests, it has a U-shaped cross-section. It is widely used in construction for support structures, such as framing walls and beams. It offers high strength and stability.
Flat steel: Also known as flat bars, they are rectangular-shaped with sharp edges. They are commonly used in construction, manufacturing, and fabrication due to their ease of handling and versatility.
T-shaped steel: It has a T-shaped cross-section and is often used as a support or structural member in construction. It provides good load-bearing capacity and rigidity.
H-shaped steel: Similar to the I-beam, it has an H-shaped cross-section. It is commonly used in construction and structural applications due to its high strength and load-bearing capabilities.
Z-shaped steel: Also called Z-purlins, they have a Z-shaped cross-section and are commonly used in the construction industry as roof framing or wall support members. They provide excellent structural support and stability.
Rail steel: It is designed specifically for railway tracks, providing stability and durability. It is made from high-quality steel to withstand heavy loads and continuous use.
Round steel: It has a circular cross-section and is used in various applications such as pipes, poles, and structural supports. Its rounded shape provides strength and stability.
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