Brief:Seamless rectanglar steel tubes, with the other name rectangular hollow section, is made from hot rolled seamless steel pipes. It's not welded hollow section. It is made through hydraulic cold drawing and is seamless tube with tight size tolerance, perfect twist,etc.
Brief:Hollow piston rod is used as both piston rod and cylinder barrels. So, it is internally honed or skived&roller burnished and externally hard chrome plated.
Brief:Hollow bar is a kind of thick wall seamless tube or pipe. In Chengxin, we can supply cold drawn hollor bars, hot rolled+deep hole bored hollow bars, and hot rolled or forged+deep hole drilled hollow bars for our customers, and machining & turning service as per drawing is available.
Brief:Piston rods are classified as solid piston rods and hollow piston rods. Solid piston rods are made from hard chromed plated steel bars with welding and CNC turning, while hollow piston rods are made from seamless pipes/tubes.
Brief:Hydraulic cylinder barrel is the core part of a piece of hydraulic cylinder and made from steel tube or honed or skived & roller burnished tubes through further welding, and machining & turning.
