Carbon seamless steel tube for hydraulic system
|Surface treatment||Oiled, phosphate etc|
|Delivery condition||BK, BKW, BKS, GBK, NBK|
|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.
|Length||1-12m as customer's requestment|
|BK ( +C )|
Tubes don't undergo heat treatment following the final cold forming,thus have a rather hig-h resistance to deformation
|BKW ( +LC )|
The final heat treatment is follwed by cold drawing involving limted deformation. Appopriat-e further processing allows a certain degree of cold droming( eg: handing expanding)
|BKS ( +SR )|
Heat treatment is applied following the last cold forming process, subject to appropriate
procession conditions, the increate in the residual stresses,involved enables both forming
and maching to a certain degress.
|GBK ( +A )||The last cold forming process followed by annealing in controlled atmosphere.|
|NBK (+N )|
The last cold forming process is followed by annealing above the upper transformation poi-nt in a controlled atmosphere.
|牌号||碳 C||硅 Si||锰 Mn||硫 S||磷 P||Cr||镍 Ni||铜 Cu|