Description

Mild steel flat bar is a long, rectangular steel bar. Flat steel bar is typically wider than thick, hence its flat shape.

Mild steel flat bar can be finished, used as billet for welded steel pipe, or used as thin plate for sheet metal lamination. Main Applications: Mild steel flat bar, as finished product, can be used to make hoops, tools, and mechanical parts, and in construction as structural members for roof frames and escalators.

Features of Mild Steel Flat Bar:

Mild steel flat bar features high strength, corrosion resistance, plasticity, and excellent weldability, primarily in the following ways:

1. Mild steel flat bar possesses high strength. When subjected to external forces, it resists significant deformation and damage, ensuring structural stability and safety.

2. Mild steel flat bar exhibits strong corrosion resistance. It effectively resists attack by acids, alkalis, and other chemicals, maintaining its integrity and aesthetic appearance over time, making it suitable for use in a variety of harsh environments.

3. Mild steel flat bar also exhibits excellent plasticity. During processing, it can be formed into a variety of complex shapes and sizes, enabling product diversification.

4. Flat mild steel bar also boasts excellent welding properties. During joining and repair processes, it can achieve strong bonds with other metal materials, ensuring structural integrity and reliability.

5. Precisely because of these outstanding performance characteristics, mild flat steel bar has found widespread application in construction, machinery, power generation, and other fields.

In construction, it is used as structural components such as beams, columns, and floor slabs, improving the building’s load-bearing capacity and seismic resistance.

In the machinery sector, mild steel flat bar is used to manufacture various mechanical parts and equipment, ensuring stable operation and longevity. In the power industry, it is used in power facilities such as utility poles and cable racks, ensuring the safe operation of power systems.

Specifications of Flat Steel Bar:

Brand	Carbon Steel, mm
Q195、Q215A、Q215B、Q235A、	1.5～ 25.4 ×780～2100× 2000 ～12000
Q235B、Q235C、Q235D	1.5～ 25.4 ×780～2100× 2000 ～12000
SS330、SS400	1.5～25.4 ×780～2100× 2000 ～ 12000
S235JR+AR、S235J0+AR、S275JR+AR、S275J0+AR	1.5～25.4 ×780～2100× 2000 ～ 12000
SPHC、SPHD	1.5～14.0×780～2100× 2000 ～ 12000
SPHE	1.5 ～ 6.0 ×780 ～2100× 2000 ～ 12000
DD11、DD12、DD13	1.5 ～ 8.0 ×780 ～2100× 2000 ～ 12000
HCP

Brand	Appropriate standard
Q195、Q215A ～ Q235D	GB/T 709
SS330、SS400	JIS G 3193
S235JR+AR、S235J0+AR	EN 10029
S275JR+AR、S275J0+AR	EN 10029
SPHC、SPHD、SPHE	JIS G3193
DD11、DD12、DD13	EN 10051
HCP	WJX(RZ)571

S45C	0.42~0.48	0.60~0.90	0.15~0.35	≤0.03	≤0.03	≤0.20	≤0.20	≤0.30	_	_	JIS G4051-2005
S20C	0.18~0.23	0.30~0.60	0.15~0.35	≤0.03	≤0.035	≤0.20	≤0.20	≤0.30	_	_	JIS G4051-2005
ASTM A36	≤0.22	0.50~0.90	≤0.40	≤0.040	≤0.050	≤0.20	≤0.20	≤0.30	≥250	400~500	ASTM A36/A36M-03a
ASTM A105	≤0.35	0.6-1.05	≤0.35	≤0.050	≤0.040	≤0.20	≤0.20	≤0.30	≥310	485~620	ASTM A105/A105M
SAE1013	0.11~0.16	0.50~0.80	_	≤0.040	≤0.050	≤0.20	≤0.20	≤0.30	_	_	ASTM A568/A568M-91a
SAE1015	0.13~0.18	0.30~0.60	_	≤0.040	≤0.050	≤0.20	≤0.20	≤0.30	_	_
SAE1017	0.15~0.20	0.30~0.60	_	≤0.040	≤0.050	≤0.20	≤0.20	≤0.30	_	_
SAE1018	0.15~0.20	0.60~0.90	_	≤0.040	≤0.050	≤0.20	≤0.20	≤0.30	_	_
SAE1020	0.18~0.23	0.30~0.60	_	≤0.040	≤0.050	≤0.20	≤0.20	≤0.30	_	_
S235JR	0.15~0.20	≤1.4	_	≤0.035	≤0.035	≤0.20	_	_	≥235	400~510	EN10025
S275JR	≤0.22	≤1.4	_	≤0.035	≤0.035	≤0.20	_	_	≥275	490~610	EN10025
ST37-2	0.17~0.20	≤1.4	_	≤0.045	≤0.045	≤0.20	_	_	≥235

Standards and Classifications

Products	Flat Steel bar
Width	1000-1500mm or as required
Length	3m,6m,9m,12m
Standard	ASTM A 615 Gr 40/60,BSS4449 Gr460B,500B etc
Material	Q195, Q235, Q345, SAE1010, SAE1020, SAE1045, EN8, EN19, C45, CK45, SS400 etc. S235JR, S275JR,42CrMo; 40CrNiMo etc. 1010, 1015, 1020, 1030, 1035, 1040, 1045, 1050, 1055, 1060, 5120, 5130, 4130, 4140, etc.
Surface	ASTM，AISI，JIS，GB， DIN，EN
Technique	Hot rolled / cold rolled
Surface	Black Finish ,Oiled,Shot Blasted,Spray Paint,Coated,Galvanized,
Surface	Or as Your Request
Package	In bundle, no other package or wrapped with waterproof, or as customers’ requirement
Payment Term	T/T, L/C at sight,West Union,Paypal
Price Term	FOB,CRF,CIF,EXW all acceptable