sell GB-T1591 Q420B Low alloy and high strength steel plate, heavy plate and wide, heavy plate.
Steel angle grade Q420B is under steel specification GB/T706 which is for high strength low alloy structural steels.When customers need special sizes for steel Q420B useage,GB/T706 Q420B steel angles,angle bar and L profile is a kind carbon structure steel which is used in riveted,bolted or welded construction of bridges and buildings,and for general structural purpose.
Q420B Adopt standard: GB-T1591 Standard Specification is for Rolled Steels for Welded Structure
Q420B Specification: Thickness: 1mm to 500mm; Width: 1500mm to 4500mm: Length: 3000mm to 27000mm
Third Party Inspection for Q420B: ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI or other quality department.
Q420B Chemical compositionMax % of the Product analysis of grade
|
C |
P |
S |
V |
||||
|
0.20 |
0.50 |
1.70 |
0.035 |
0.035 |
0.07 |
0.20 |
0.20 |
|
N |
B |
|
|||||
|
0.30 |
0.80 |
0.30 |
0.015 |
0.20 |
- |
- |
|
Q420B Yield strength
|
To 16 |
16-40 |
40-63 |
63-80 |
80- 100 |
100- 150 |
150- 200 |
200- 250 |
250- 400 |
|
|
ReH - Minimum yield strength (MPa) |
420 |
400 |
380 |
360 |
360 |
340 |
- |
- |
- |
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578
Q: Why choose Q420B over standard structural steel for my project?
A: Simply put, it's stronger, which means you use less. With a yield strength of 420 MPa, Q420B allows for lighter cross-sections while maintaining the same load capacity. This directly cuts down on material costs and makes transportation and on-site installation significantly easier and cheaper.
Q: Is high-strength steel difficult to weld on site?
A: Not with Q420B. Despite its impressive strength, it maintains excellent weldability. Your fabricators won't need special procedures to get strong, reliable joints-saving precious time during the construction phase, even for complex steel trusses and frames.
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