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High precision cold rolled seamless steel tube

Alloy seamless steel tube with high performance,because high content of Cr material is included .

Brand:
RAY STEEL TUBE
Material:
10#(ST35.8),20# (St45.8),45#(1045)1020 (20#, STPG42,STKM12B,STKM12C,STKM13A,STKM13B,A106Gr.B, A53.B, St45.8,St44, St45, E235 etc)
Size:
OD:10-65 mm , Thickness: 1-8 mm
Technology:
Cold rolled

Availability:

Quantity:



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DIN high precision cold-rolled seamless steel tube

Synopsis of Craft: quality carbon steel-cold rolled-heat treatment without oxidization (NBK Status)-nondestrutive testing.

In the wall honing and inside flushing under the high pressure.Antirust oiling outside surface-plastic capping on both ends.

Main Features:High precision, excellent brightness, no oxidization on the outer and inner walls after heat treatments, high cleanness of inside wall. The steel tube is able to withstand high pressure. No deformation after cold bending,no crack after flaring and flattening. The complicated geometrical forming and machining can be realized.

Color of tube: Gray with white.

Main Application: To be used in hydraulic system,automobile and in the occasion where the high precision, brightness,cleanness and mechanical properties of the tube are required.

Production Stanards	Exechtjve Standard	Producing Range	Steel Grade
Seamless Steel Tube for Liquid Transporting	GB/T 8163-1999	Φ10-65 * 1-6	10#,20#,35#,45#,16Mn
Seamless steel tubne for Elevated Temperatiure	EN10305-1/4	Φ10-65 * 1-6	E215,E235,E355
Cold Drawn and Cold Rolled Seamless Precision Tube	DIN2391	Φ10-65 * 1-6	ST35,ST37.4,ST45,ST52.4

Chemical composition comparison Sheet:

Steel Grade	C	Si	Mn	S	P	Cr	Ni	Cu
10	0.08-0.13	0.15-0.35	0.30-0.60	≤0.030	≤0.030	≤0.20	≤0.25	≤0.25
1010	0.08-0.13	0.15-0.35	0.30-0.60	≤0.050	≤0.040	≤0.20	≤0.25	≤0.25
STKM11A	≤0.12	≤0.35	≤0.60	≤0.040	≤0.040
S10C	0.08-0.13	0.15-0.35	0.30-0.60	≤0.030	≤0.030	≤0.20	≤0.20	≤0.30
DC011.0330	≤0.12		≤0.60	≤0.045	≤0.045
C10C1.0214	0.08-0.12	≤0.10	0.30-0.50	≤0.025	≤0.025	AL0.020~0.060
Гост10	0.07-0.14	0.17-0.37	0.35-0.65	≤0.035	≤0.040	≤0.15
A106 Gr.A	≤0.25	≤0.10	0.27-0.93	≤0.035	≤0.035	≤0.40	≤0.40	≤0.40
St37	≤0.17	0.17-0.37	0.35-0.65	≤0.020	≤0.025	≤0.25	≤0.25	≤0.20
St35	≤0.17	≤0.35	≤0.40	≤0.025	≤0.025
E215	≤0.10	≤0.05	0.7	≤0.025	≤0.025
20	0.17-0.23	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25	≤0.30
STKM12A	≤0.20	≤0.35	≤0.60	≤0.20	≤0.040	≤0.040
STKM12B
STKM12C
STKM13A	≤0.25	≤0.35	0.30-0.90	≤0.20	≤0.040	≤0.040
STKM13B
STKM13C
1020	0.18-0.23		0.30-0.60	≤0.050	≤0.040
S20C	0.18-0.23	0.15-0.35	0.30-0.60	≤0.030	≤0.030	≤0.20	≤0.20	≤0.20
C22 1.0402	0.17-0.24	≤0.40	0.40-0.70	≤0.045	≤0.045	≤0.40	≤0.40
C20C 1.0411	0.18-0.22	≤0.10	0.7-0.9	≤0.025	≤0.025
Гост 20	0.17-0.24	0.17-0.37	0.35-0.65	≤0.035	≤0.040	≤0.025	≤0.030	≤0.030
A106Gr.B	≤0.25	≤0.10	0.29-1.06	≤0.035	≤0.035	≤0.40	≤0.40	≤0.40
A53.B	≤0.30		≤1.2	≤0.045	≤0.05	≤0.40	≤0.40
St45	≤0.21	≤0.35	≥0.40	≤0.025	≤0.025
E235	0.17-0.22	≤0.35	≤0.40	≤0.025	≤0.025
45	0.42-0.50	0.17-0.37	0.50-0.80	≤0.035	≤0.035	≤0.25	≤0.25	≤0.25
1045	0.43-0.50	0.17-0.37	0.50-0.80	≤0.045	≤0.045	≤0.40	≤0.40	≤0.10
C45 1.0503	0.42-0.50	≤0.40	0.50-0.80	≤0.045	≤0.045	≤0.40	≤0.40	≤0.10
Гос т 45	0.42-0.50	0.17-0.37	0.50-0.80	≤0.035	≤0.040	≤0.25	≤0.30	≤0.30
CK45	0.42-0.50	0.17-0.37	0.50-0.80	≤0.020	≤0.025	≤0.25	≤0.25	≤0.20

Mechanical properties of the table:

Steel Grade	Tensile Strength	Yield strength	Elongation	Hardness （BK)
	Mpa	Mpa	%	HB
1010	≥335	≥205	≥31	≤137
STKM 11A	≥295	/	≥35
S10C	≥335	≥205	≥31	≤137
A106 Gr.A	≥330	≥205	≥35
St35.8	≥360	≥235	≥25
St37	≥335	≥205	≥31
St35	≥420	≥315	≥8
E215	≥430		≥8
A53.B	≥415	≥240	≥20
20#	≥410	≥245	≥25	≤156
E235	≥480	≥235	≥25
1020	≥410	≥245	≥25	≤156
A106 Gr.B	≥415	≥240	≥25
St45	≥580		≥5
E235	≥480		≥8
S20C	≥410	≥245	≥25	≤156
STKM12A	≥345	≥175	≥35
STKM12B	≥390	≥275	≥25
STKM12C	≥470	≥355	≥20
STKM13A	≥375	≥215	≥30
STKM13B	≥440	≥305	≥20
STKM13C	≥510	≥380	≥15
45#	≥600	≥355	≥16	≤229
CK45	≥590	≥345	≥21	≤230
C45 1.0503	≥600	≥355	≥16	≤229
30CrMo	≥930	≥785	≥12	≤229
4130	≥930	≥786	≥12	≤229
SCM430	≥930	≥785	≥12	≤229
40Cr	≥980	≥785	≥9	≤207
SCr440	≥980	≥785	≥12	≤207
5140	≥980	≥785	≥9	≤207
40CrMo	≥1080	≥930	≥12	≤217
35Cr	≥930	≥735	≥11	≤207
5135	≥536	≥555	≥31	≤414 (HBW)
SCr435	≥930	≥735	≥11	≤207
34Cr4	≥930	≥735	≥11	≤207
1.7033	≥836	≥538	≥24	≤233 (HBW)

Dimension tolerance comparision Chart
Outside Diameter	GB/T 3639	DIN2391(EN10305)	RAY steel tube standard	Special standard
6-30mm	+/-0.1 mm	+/-0.08 mm	+/-0.05 mm	+/-0.03 mm
31-40mm	+/-0.15 mm	+/-0.15 mm	+/-0.05 mm	+/-0.03 mm
41-50mm	+/-0.20 mm	+/-0.20 mm	+/-0.05 mm	+/-0.03 mm
51-60mm	+/-0.25 mm	+/-0.25 mm	+/-0.08 mm	+/-0.03 mm
61-65mm	+/-0.30 mm	+/-0.30 mm	+/-0.10 mm	+/-0.05 mm
Thickness	+/-0.12 mm	+/-0.10 mm	+/-0.05 mm	+/-0.03 mm