Crane pipe is a type of flexible and movable pipe, commonly used for liquid loading and unloading in petroleum and chemical docks, with media such as oil and water inside the pipe. It is divided into various types and has advantages such as high safety and flexibility compared to old-fashioned hoses.

Crane tubes are specialized equipment in the fluid loading and unloading process of the petrochemical industry, also known as fluid loading and unloading arms. It uses rotary joints to connect with rigid pipes and elbows to achieve the transportation of liquid media between trains, tank trucks, and storage and transportation pipelines on the wharf. It replaces the old hose connection and has high safety, flexibility, and long service life characteristics. It is an ideal specialized equipment in the process of sending and receiving oil materials, and can also be widely used in the chemical industry and other industries to send and receive various liquid raw materials.

Crane tubes are divided into: automobile loading and unloading crane tubes, train loading and unloading crane tubes, aircraft loading and unloading crane tubes, barrel loading crane tubes, etc.

Railway and highway oil loading and unloading cranes are specialized equipment mainly used for loading and unloading fluid operations on railway tank trucks and highway oil tank trucks. From the type of loading and unloading, it can be divided into upper loading and unloading and lower loading and unloading. Transportable media include petroleum products such as crude oil, gasoline, diesel, lubricating oil, etc; It can also transport chemical products such as concentrated sulfuric acid, liquefied natural gas, liquefied petroleum gas, dissolved sulfur, asphalt, carbon disulfide, etc.

Crane tubes are mainly composed of fixed, rotating, operating, balancing and other mechanisms, as well as oil pipes. The rotary mechanism (rotary joint) is carefully manufactured with forged steel or aluminum alloy, equipped with double row ball bearings and stainless steel special sealing rings. It has flexible rotation, reliable sealing performance, and durability. The balance system includes types such as counterweight, torsion spring, compression spring, tension spring and screw, as well as hydraulic and pneumatic balance, all of which can be operated with very little force.