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Din2391 schedule 40 building material steel tube/pipe

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.
  • RAY STEEL TUBE

  • STKM11A/A106 Gr.A/St35.8/STKM13A/STKM13B/A106Gr.B/A53.B/1045 (45#)/St52 /16Mn/E355/4130 etc

  • OD:10-65 mm , Thickness: 1-8 mm

  • Cold rolled & Cold drawn

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Quantity:

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.

MaterialCarbon Steel and Alloy Steel
Section ShapeRound
Surface treatmentOiled, phosphate etc
Outer Diameter6-65mm
Wall Thickness1-8mm
Seamless Steel Tube StandardDIN2391, 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 Grade1010 (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 Details1.Internal wrapped with plastic film. External wrapped with woven bags.
2. wooden boxes to pack.
3. Iron stand.
CertificationISO9001
Delivery conditionBK BKW BKS GBK NBK
Length1-12m 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

Cold Rolled seamless steel tube show:

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SAE1045-PIPE9



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