HR PICKLING STEEL SHEET/COIL_Huangshi Shan Lixing metallurgical sheet Co., Ltd.

Adopts high quality hot rolled strip as raw material, after removing oxidized

scale, edge trimming and skin pass processing, gets intermediate product

whose surface quality and property(mainly including cold bending or

drawing property) is between HR and CR

Advantage of HR pickling steel

1. Compared with HR steel, its advantages mainly are

1)good surface quality, owing to oxidized scale being removed, and also

good for welding, oiling and painting

2)Precise dimensions, owing to skin pass process which improves strip shape

and flatness error caused

3)Improve surface roughness and make it looks more perfect.

2. Compared with CR steel, it can reduce the customer' s cost under

guarantee of good surface quality

Raw material:

Low carbon steel, carbon structural steel, improved carbon structural steel,

low alloy stee

Product spec:

Thickness range: 1.5-4.0mm

Width range: 800-1380mm

ID:Φ610mm

O.D:max.Φ2000mm

Coil weight: max 25t

Product grade, standard, and purpose

Standard& grade	National standard (GB)	Grade	Equivalent standard	Grade	Function & purpose
Material type	Implementation of standards	Grade	Standard code	Grade	Suitable formanufacture of cold formingparts
Cold forming steel	Q/BQB302	SPHC	JISG3131	SPHC
		SPHD		SPHD
		SPHE		SPHE
		DD11(St22)	EN1011	DD11
		DD12(St23)		DD12
		DD13(St24)		DD13
Common structural steel	GB/T912-2008	Q195	JISG3101	SS330	Suitable formanufacture of cold formingparts
		Q215		SS330
		Q235		SS400
		Q345
		St33	DIN17100	St33

Dimension, profile, weight and tolerance

Nominal dimensions of strip should accord with

Thick（mm）	width（mm）	Length（mm）	Coil I.D.（mm）
1.5～4.0	800～1380	2000～2500（or C）	φ610

Thickness tolerance should accord with

Nominal thickness（mm）	Allowable thickness deviation(mm)
Nominal thickness（mm）	General accuracy	Higher accuracy
＞1.5-2.5	±0.17	≤0.05
＞2.5-3.0	±0.20	≤0.05
＞3.0-4.0	±0.22	≤0.05

Tolerance of Flatness:12 mm per100 mm length
Tolerance of Camber:4 mm per2 meter length

Tolerance of width should accord with table3

	Width tolerance（mm）
Width range（mm）	＞1.5-2.5	＞2.5-4.0
Edge trimming	0~+3	0~+5
Without edge trimming	+20（Aiming value+10）

In beginning and ending of recoiling the telescope edge should not greater than 40mm; while in the middle of the coil, it should not greater than 30mm

Coil weight should be between 5 to 25 tons.

Chemical composition

Chemical composition of steel (melting analysis) should conform to standard JIS G 3131-1996

Mechanical Properties

Nominal thickness	Yield strength (Mpa)	Tensile strength (Mpa)	Elongation A50mm%	180 degree bending test
＞1.5-2.5	≤290	≥310	≥33	D=0a
＞2.5-3.0	≤290	≥300	≥35	D=0a
＞3.0-4.0	≤290	≥300	≥37	D=1/2a

Note:

1. tensile test and bending test here means for longitudinal sample

2. Tensile test adopts sample Lo=50 mm, b=25 mm

3. Sampling method conforms to JIS Z 2204 No.3 sample; test method conforms to JIS Z 224

4. Hardness test conforms to JIS Z 224

5. Aiming value of hardness is HRB 60+8. The actual value will be mentioned in guarantee, but not as acceptance requirements

Surface quality:

1 Steel sheet or strip surface should be free of pollution, crack, rust and so on defect, and without spot due to line

stoppage. Defect not influence forming is acceptable, such as scratch/wrinkle which cannot feel by hand touch, light yellow film

after pickling, slight pits, imprint, color difference, etc

2 The product with light defects is allowed due to it has no chance or cannot be cut down, but total defect parts should not

longer than 6% of total length

3 Oiling means to coating strip surface with anti-rust electrostatic oil. It can be oiled slightly, intermediate oiling and heavy

oiling as required by customer Product after oiling can be stored without rust within three months