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Cold Drawn Seamless Steel Tube

Quality carbon steel、cold drawing 、 bright heat treatment without oxidization (NBK status) 、 nondestructive testing、 in the wall honing and inside smooth.

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  • Round tube
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Sheng Ding yuan

Cold Drawn Seamless Steel Tube(polished)


Selection Standard: DIN2391( Germany Standard)or EN10305-1/4( Europe Standard)


Synopsis of Process Routing: quality carbon steel-- cold drawn--heat treatment without oxidization(NBK status)--nondestructive testing -- flushing the internal hole with special equipment under the high pressure--dealing with antirust oil on surface-- plastic capping on both ends.


Main Features: high precision, excellent brightness, no oxidization on the outer and inner walls after heat treatment, 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.


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