English

Pipe roller cradles are for pipe lowering in trench purpose, major factors as follows:

1. Lifting capacity, it depends on beam material, beam welding and steel rope etc

2. Lifting safety factor: 5:1 is recommended

3. Roller coating life time: urethane rollers eliminates the risk of damage to the pipe

Lifting beam:

Deping adopts high strength welding steel as hanger material to ensure welding seam strength

Beam welding processes:

Strictly follow the prequalified welding parameters, and conduct 100% NDT test to ensure safe use of roller cradle

Roller coating processes:

Key factors for roller lifetime: coating process and coating thickness.

To prevent coating peeling out, Deping well organize the coating process of pipe roller cradle, including: metal roller polishing, sand blasting, 2 times of ultrasonic cleaning, drying, applying glue, heating treatment in oven, keep dry and metal roller at constant high temperature for coating, coating vulcanization for 24hours etc.

Furthermore several coating tests will be conducted per standard DIN53505 or GB/T 528-2009, including Hardness shore A, Max. broken pulling force / N, Tensile strength / MPA, Elongation at break / %, Peel strength / N/mm etc.

Deping’s pipe roller cradles comply with European standards, obtain CE certification.

Any inquiry, welcome to contact us!