https://energy-steel.com/cs/products/steel-pipes/hydraulic-cylinder-tube/
Hydraulic Cylinder Tube Manufacturer| Future Energy Steel
Discover precision seamless hydraulic cylinder tubes from Future Energy Steel. Available in grades 1020, 1045, E235, E355, and St52, ideal for heavy machinery,...
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https://parts.cat.com/hi/catcorp/product/136-2204
136-2204: Hydraulic Cylinder Tube Assembly | CATCorp
Hydraulic Cylinder Tube with Bearing
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https://www.wuxixinluoyy.com/Honing_tube_series.html
China High Precision Honing Tube - Xinluo | Hydraulic Cylinder Honed Tubes & Precision Barrels
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