공학 기계류를 위한 12M 이음새가 없는 정확성 스틸 튜브

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12M Seamless Precision Steel Tube for Engineering machinery Quick Detail: EN10305-1 Seamless Precisionsteel tubes Used in hydraulic & pneumatic cylinder ,automobile and other mechanical device .Feature: high precision and high brightness, the inner and outer surface of the tubes have high cleanness without oxid, mechanical properties of the final tubes also come out excellent, promising no leakage under high pressure, no deformation after cold-bent and no cracks when flaring