钢管材质选用碳素钢，活塞杆选用碳钢，油封采用进口高级精制品，耐油，耐磨，耐压，耐腐蚀。
Steel material selection of carbon steel, carbon steel, piston oil imported advanced masterwork, oil resistance, wear-resisting, compression, corrosion resistance.
钢管材质选用碳素钢，活塞杆选用碳钢，油封采用进口高级精制品，耐油，耐磨，耐压，耐腐蚀。
Steel material selection of carbon steel, carbon steel, piston oil imported advanced masterwork, oil resistance, wear-resisting, compression, corrosion resistance.
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