The compressed carbon steel and alloy steel pipes used for crane pipes shall be seamless steel pipes.
The steel-plastic composite pipe used in the liquid loading and unloading arm of the crane tube meets the current chemical industry standards "plastic lined (PP, PE, PVC) steel pipe and pipe fittings" HG20538-1992 and "PTFE lined steel pipe and pipe fittings" HG/T21562-1994 Regulations.
The aluminum alloy pipe used in the liquid loading and unloading arm of the crane tube should comply with the current standard "Aluminum and Aluminum Alloy Hot Extrusion Pipe Part 1: Seamless Round Pipe" GB/T4437.1-2000 and "Aluminum and Aluminum Alloy Hot Extrusion Pipe Part Part 2: Seamed Pipe" GB/T700-2006 regulations.
The forgings used in the crane tube liquid handling arm shall meet the requirements of the current standard "Steel Butt Welding Seamless Pipe Fittings" GB/T12459-2005.
The forgings used in the crane tube liquid loading and unloading arm shall comply with the current machinery industry standards "Carbon steel and low alloy steel forgings for pressure vessels" JB4726-2000, "Carbon steel and low alloy steel forgings for low temperature pressure vessels" JB4727-2000 The second grade and the current machinery industry standard "Stainless steel forgings for pressure vessels" JB4728-2000.
Determine the material used on the liquid loading arm according to the requirements of the process flow and the characteristics of the loading and unloading liquid medium. Metal materials such as carbon steel, alloy steel, stainless steel, and non-metallic materials such as plastic can be used. For highly corrosive liquids, materials such as polytetrafluoroethylene, PVDF plastic, carbon steel + lining, nickel-based alloy, Hastelloy, etc. should be selected according to the nature of the liquid medium.
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