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油田套管钢管油井钻井用Api无缝钢套管钻杆或油管
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ASTM A106 A53 API 5L圆形黑色无缝碳钢管
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11 orders
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DIN2391 ST52液压珩磨管供应商STKM13C E355 C20气缸无缝珩磨管
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4130铬管/铬管4130/钢aisi 4340无缝珩磨管
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6 orders
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椅子用镀铬钢棒Ck45活塞杆轴
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东艾CK45镀硬铬钢筋轴液压活塞杆
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5 orders
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20MnV6 42crmo 镍铬镀钢棒
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液压缸用Ck45硬铬镀活塞杆
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5 orders
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减震器活塞杆液压缸活塞杆空心活塞杆
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液压缸活塞杆SAE 4140镀硬镀铬杆:
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9 orders