Qingsongqiao, Qianhu Village, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu Province, China, 213000
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Back-up Rolls

Intermediate Rolls

Work Rolls

Work Rolls	Mill Type	Single Stand Rolling Mill, Rolling Tandem Mill, Cluster Mill, Skin Pass Mill
	Material	9Cr2Mo、9Cr3Mo、9Cr5Mo、W6Mo5Cr4V2（M2）、8Cr3MoV、8Cr5MoV、Cr12Mo1V1 (D2)、Cr12Mo1V1+Co (D2+Co)
	Diameter	¢40-¢250*
	Length	450mm-1450mm
	Hardness of Barrel	75-93 HSD
	Hardness of Neck	30-60 HSD
	Thickness of hardened layer Harden depth	5-15mm
	Execution Standards	GB/T13314-2008

Intermediate Rolls	Mill Type	Single Stand Rolling Mill, Rolling Tandem Mill, Cluster Mill, Skin Pass Mill
	Material	5H12、8Cr5MoV
	Diameter	¢250-¢450*
	Length	500mm-1600mm
	Hardness of Barrel	74-82 HSD
	Hardness of Neck	40-60 HSD
	Thickness of hardened layer Harden depth	10-30mm
	Execution Standards	GB/T13314-2008

Back-up Rolls	Mill Type	Single Stand Rolling Mill, Rolling Tandem Mill, Cluster Mill, Skin Pass Mill
	Material	45Cr4NiMoV、50Cr5MoV、60CrMnMo、60CrNiMo、70Cr3Mo、70Cr3NiMo
	Diameter	¢450-¢1600*
	Length	450mm-1780mm
	Hardness of Barrel	52-72 HSD
	Hardness of Neck	30-55 HSD
	Thickness of hardened layer Harden depth	25-55mm
	Execution Standards	JB/T4120-2017

Various material chemistries

Cold Rolling Mill Work Rolls and Intermediate Rolls

Material	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
9Cr2Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	1.70-2.10	≤0.25	0.20-0.40	—	—	—
9Cr3Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	2.50-3.50	≤0.25	0.20-0.40			—
9Cr5Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	4.80-5.50	≤0.25	0.20-0.40			—
8Cr3MoV	0.78-1.10	0.40-1.10	0.20-0.50	≤0.025	≤0.025	2.80-3.20	≤0.80	0.20-0.60	0.05-0.15	—	—
8Cr5MoV	0.78-0.90	0.40-1.10	0.20-0.50	≤0.020	≤0.020	4.80-5.50	≤0.80	0.20-0.60	0.10-0.20	—	—
M2	0.80-0.90	0.20-0.45	0.15-0.40	≤0.025	≤0.025	3.80-4.40	—	4.50-5.50	1.75-2.20	5.50-6.75	—
Cr12Mo1V1(D2)	1.40-1.60	≤0.60	≤0.60	≤0.020	≤0.010	11.00-13.00	≤0.15	0.90-1.10	0.75-0.95	≤0.15	—
Cr12Mo1V1+Co(D2+Mo)	.40-1.60	≤0.60	≤0.60	≤0.020	≤0.010	11.00-13.00	≤0.15	0.90-1.10	0.75-0.95	≤0.15	0.35-0.50

Cold Rolling Mill Intermediate Rolls

Material	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
5H12	0.48-0.55	0.80-1.20	0.20-0.50	≤0.025	≤0.010	4.80-5.50	—	1.0-1.50	0.30-0.60	1.0-1.50	—
8Cr5MoV	0.78-0.90	0.40-1.10	0.20-0.50	≤0.020	≤0.020	4.80-5.50	≤0.80	0.20-0.60	0.10-0.20	—	—

Cold Rolling Mill Back-up Rolls

Material	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
45Cr4NiMoV	0.40-0.50	0.40-0.80	0.60-0.80	≤0.020	≤0.020	3.50-4.50	0.40-0.80	0.40-0.80	0.05-0.15	—	—
50Cr5MoV	0.40-0.60	0.40-0.80	0.50-0.80	≤0.020	≤0.020	4.50-5.50	≤0.60	0.40-0.80	≤0.30	—	—
70Cr3Mo	0.60-0.75	0.40-0.70	0.50-0.90	≤0.025	≤0.025	2.0-3.50	≤0.60	0.25-0.60	—	—	—

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Execution Standards