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Gas spring shock absorber high precision seamless steel tubes 18*1

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

  • 20# (St45.8),45#(1045)1020 (20#, STPG42,STKM12B,STKM12C,STKM13A,STKM13B,A106Gr.B, A53.B, St45.8,St44, St45, E235 etc)

  • 18*1

  • Cold rolled

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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.

MaterialCarbon Steel 
Section ShapeRound
Surface treatmentOiled
Outer Diameter18*1
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#),St52 (16Mn, E355),30CrMo(4130)
Packing Details1.Internal wrapped with plastic film. External wrapped with woven bags.
2. wooden boxes to pack.
3. Iron stand.
CertificationISO9001
Delivery conditionBK 
Length1-12m as customer's requestment

Chemical composition comparison Sheet:

Steel Grade C Si Mn S PCr    NiCu
STKM12B
0.220.220.410.0060.0260.040.020.01

Mechanical property:

SizeTensile StrengthYield strengthElogation
MpaMpa%
18*171954717.5


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SAE1045-PIPE76



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