Hot rolled pickled steel strip for structure SS330, C22, S20C,SPHT1,…

What is Hot rolled pickled steel strip for structure?

Hot rolled pickled steel strip for structure refers to a type of steel strip that is produced through a specific manufacturing process called hot rolling and pickling, and is primarily used for structural applications.

Hot rolling involves heating a steel billet or slab to high temperatures and passing it through a series of rollers to shape it into a desired thickness and width. This process results in a steel strip with improved mechanical properties, such as high strength and toughness, making it suitable for structural applications where strength and durability are important.

After hot rolling, the steel strip is pickled to remove the scale or oxide layer that forms on the surface of the steel during hot rolling. Pickling involves immersing the steel strip in an acid solution to remove the scale, leaving behind a clean surface with improved surface quality and improved corrosion resistance.

Steel for general structure

Grade	Chemical composition%
Grade	C	Si	Mn	P	S	N	Ceq
SS330	≤0.15	≤0.30	≤0.95	≤0.035	≤0.035	–	–
SS400	≤0.21	≤0.30	≤1.40	≤0.035	≤0.035	–	–
SS490	≤0.22	≤0.25	≤1.40	≤0.035	≤0.035	–	–
SS540	≤0.30	≤0.25	≤1.60	≤0.035	≤0.035	–	–
S185	–	–	–	≤0.040	≤0.040	–	–
S235JR	≤0.17	≤0.35	≤1.40	≤0.035	≤0.035	≤0.012	≤0.35
S235J0	≤0.17	≤0.35	≤1.40	≤0.030	≤0.030	≤0.012	≤0.35
S275JR	≤0.21	≤0.35	≤1.50	≤0.035	≤0.035	≤0.012	≤0.40
E295	≤0.30	≤0.35	≤1.60	≤0.035	≤0.035	≤0.012	–
S355JR	≤0.20	–	–	≤0.030	≤0.030	–	–

Grade	Mechanical properties
Grade	YS(MPa)	TS(MPa)	EL%
SS330	≥195	330-430	≥26
SS400	≥235	400-510	≥21
SS490	≥275	490-610	≥19
SS540	≥390	≥540	≥17
S185	≥175	290-510	≥10
S235JR	≥225	360-510	≥17
S235J0	≥225	360-510	≥17
S275JR	≥265	410-560	≥21
E295	≥285	470-610	≥18
S355JR	≥345	470-630	≥20

Steel for mechanical structure

Grade	Chemical composition%
Grade	C	Si	Mn	P	S
C22	0.17-0.24	≤0.40	0.40-0.70	≤0.035	≤0.035
C35	0.32-0.39	≤0.40	0.50-0.80	≤0.035	≤0.035

Grade	Chemical composition%
Grade	C	Si	Mn	P	S
S20C	0.18-0.23	0.15-0.35	0.30-0.60	≤0.030	≤0.030
S35C	0.32-0.38	0.15-0.35	0.60-0.90	≤0.030	≤0.030
S45C	0.42-0.48	0.15-0.35	0.60-0.90	≤0.030	≤0.030

Steel strip steel for steel pipe

Grade	Chemical composition%
Grade	C	Si	Mn	P	S
SPHT1	≤0.10	≤0.35	≤0.50	≤0.035	≤0.035
SPHT2	≤0.18	≤0.35	≤0.60	≤0.035	≤0.035
SPHT3	≤0.25	≤0.35	0.30-0.90	≤0.035	≤0.035
SPHT4	≤0.30	≤0.35	0.30-1.00	≤0.035	≤0.035

Grade	Mechanical properties
Grade	TS(MPa)	EL%
SPHT1	≥270	≥30
SPHT2	≥340	≥25
SPHT3	≥410	≥20
SPHT4	≥490	≥15

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Hot rolled pickled steel strip for cold forming DD11, SPHC, BRC1,…

Hot rolled pickled steel strip for automobile structure SAPH310, B330CL, B320L, QStE340TM,…

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