The crane pipe is used for the special equipment of railway and highway loading and unloading operation, 5 rotating joints are used up and down, the front is equipped with fast shut-off valve, and the flange is connected with the tank car. 

From the point of view of loading and unloading, it can be divided into loading and unloading. 

It can transport medium crude oil, diesel oil, lubricating oil, gasoline, etc., as well as concentrated sulfuric acid, liquefied natural gas, liquefied petroleum gas, dissolved sulfur, asphalt, carbon disulfide and other chemical products. 

Crane pipe non-leakage rotating joint and sealing ring, the key components of rotating joint alloy steel and stainless steel, the application of compound raceway, can withstand harsh axial, radial and torque load, flexible rotation. 

The sealing ring has a unique structure, using wear-resistant and corrosion-resistant reinforced polytetrafluoroethylene material PTFE, embedded stainless steel skeleton, the sealing surface is polished, and the sealing performance is superior. 

Reliable. According to customer requirements, crane pipe can add column (column type ordinary crane pipe HLH-DN), airtight (column type closed anti-overflow crane pipe HMLH-DN), acousto-optic alarm device (anti-overflow crane tube HQH-DN), heating and thermal insulation device (mixing heat preservation crane pipe HBH-DN), Stainless. 

Steel material (stainless steel crane pipe 304-HH-DN), hydraulic submersible pump (hydraulic submersible pump unloading crane pipe HYBH-DN) and electric submersible pump (electric submersible pump unloading crane pipe HDBH-DN). 

Lianyungang Duochang Machinery Co., Ltd. is a manufacturer of crane pipes and floating trays. 

At present, the main products are loading and unloading crane pipes for cars and trains, floating trays in steel and aluminum storage tanks. In the face of the complex use environment and the increasingly competitive social situation, Hua Heng has developed a low temperature crane pipe, and the lowest bearing temperature can reach-196 ℃. 

The medium of liquefied natural gas (LNG),) plays a positive and meaningful role in the storage and transportation of cryogenic media in most areas of northern China. 

To learn more about the crane pipe, pay attention to the crane tube manufacturer Lianyungang huade Petrochemical Co., Ltd.