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Big diameter astm a139 gr. b carbon seamless steel pipe manufacturer

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Big diameter astm a139 gr. b carbon seamless steel pipe manufacturer

carbon seamless steel tube is made from solid bar which is be perforated to hollow billet, through hot rolling, cold rolled or cold drawn.cold drawn seamless steel tube raw materials are carbon tubular billet.Cold drawn seamless steel tube classify: cold rolled ( cold drawn) or hot rolling.

Brand:
RAY STEEL TUBE
Material:
STKM11A/A106 Gr.A/St35.8/STKM13A/STKM13B/A106Gr.B/A53.B/1045 (45#)/St52 /16Mn/E355/4130 etc
Size:
OD:10-65 mm , Thickness: 1-8 mm
Technology:
Cold rolled & Cold drawn

Availability:

Quantity:



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Cold rolled( drawn) seamless steel tube be devided to normal steel tube, low & middle pressure boiler tube, high pressure boiler tube, alloy steel tube, others. Cold rolled seamless steel tube minimum outside diamter is 6mm. Cold rolled seamless steel tube precision is higher than hot rolling.

Carbon steel tube material: 10#,20#,30#,45# etc high grade carbon steel.

10#(ST35.8),20# (St45.8) is kind of low carbon steel, applied to fluid transportation piping.

45#(1045) is kind of middle carbon steel,applied to mechanical parts: automotive spare parts,motorcycle spare parts. And it ensure strength and flattening test.

Application: Most of RAY STEEL TUBE are used for mechanical structure,hydraulic equipment's size with high precision and good surface finish. Precision seamless steel tube be used for mechanical structure and hydraulic equipment, not only save time, imporve the material utilization,but also imporve product quality.

Material	Carbon Steel and Alloy Steel
Section Shape	Round
Surface treatment	Oiled, phosphate etc
Outer Diameter	6-65mm
Wall Thickness	1-8mm
Seamless Steel Tube Standard	DIN2391, DIN17175, ASTM A106, ASTM A213, ASTM A53, ASTM A312, ASTM A179, SAE 4130. JIS G3445, JIS G3444, JIS G 3461, JIS G3441, JIS G3454 etc
Steel Tube Grade	1010 (10#, STS38,STKM11A,STKM12A,STKM13C, A106 Gr.A,St35.8, St37,St35,E215 etc) 1020 (20#, STPG42,STKM12B,STKM12C,STKM13A,STKM13B,A106Gr.B, A53.B, St45.8,St44, St45, E235 etc) 1045 (45#)
Packing Details	1.Internal wrapped with plastic film. External wrapped with woven bags. 2. wooden boxes to pack. 3. Iron stand.
Certification	ISO9001
Delivery condition	BK BKW BKS GBK NBK
Length	1-12m as customer's requestment

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

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
St35.8
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
St45.8
St44
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