One-stop Bending Solutions For Wires, Tubes And Pipes
One-stop Bending Solutions For Wires, Tubes And Pipes
Fully automatic pipe bending machines are an indispensable core equipment in shipbuilding, and their necessity is mainly reflected in the following technical links:
1.Special process requirements for ship pipelines
a.Complex spatial orientation
Ship pipelines need to bypass obstacles such as bulkheads and equipment. CNC fully automatic pipe bending machines can achieve continuous bending at multiple angles in three-dimensional space (±0.1° accuracy) to meet compact layout requirements.
b.Strict bending radius
The hot bending process can achieve a small bending radius of 0.7~1.5 times the pipe diameter (such as carbon steel pipe R=0.7D), which is suitable for narrow areas such as ship engine rooms19.
c.Material adaptability
Thick-walled marine pipes (＞4mm) need to be locally heated to 150℃ to prevent cracking, and the pressure of the hydraulic fully automatic pipe bending machine needs to reach 63MPa or more to ensure the forming strength.
2.Key capabilities of ship-grade pipe bending equipment
| Device Type | Advantages of marine applications | Typical parameters |
| Fully automatic CNC type | Programming controls space curves to reduce human errors | Accuracy ±0.1°, bending radius ≥1.5D |
| Large diameter hydraulic type | Cold-bent Φ159mm seamless steel pipe to avoid the problem of oxide scale caused by thermal deformation | Working pressure 63MPa |
| Portable hydraulic type | Quickly modify pipelines at the dock site | Weight 15-50kg, portable |
Core Value Summary
Efficiency Improvement: CNC machines are 40% more efficient than traditional hot bending machines, shortening the shipbuilding cycle.
Cost Control: Cold bending eliminates the need for cleaning/descaling, reducing auxiliary material consumption by 30%.
Safety Redundancy: Hydraulic system overload protection (≥14MPa automatic pressure relief) prevents pipe bursting.
The application of fully automatic pipe bending machines in shipbuilding is directly related to the reliability of the pipeline system, construction compliance and cost-effectiveness, and is an essential processing equipment for modern shipyards.
How to choose a fully automatic pipe bending machine suitable for shipbuilding?
Based on the special requirements of shipbuilding for pipe bending equipment (high strength, large pipe diameter, corrosion resistance), the following are the key technical points and machine model recommendations for selection:
3.Core parameter selection standard
Pipe adaptability
Material strength : Hydraulic or hybrid models are preferred, the maximum processing capacity of carbon steel pipes must reach Φ273×16mm, and stainless steel pipes must be compatible with Φ220×10mm17.
Bending radius : The compact space of the ship requires a small radius bend (R=1.5D~3D), and a model with a booster device is selected to prevent rupture.
Process matching
| Process Type | Applicable scenarios | Equipment Requirements |
| Cold bending | Ordinary carbon steel pipe (Rx>3D) | Standard mold + anti-wrinkle block |
| Hot bending | Small radius/thick wall tube (Rx<1.5D) | Local heating up to 300℃ function |
4.Fully automatic pipe bending machine ship-specific function configuration
A. Precision and strength guarantee
The closed-loop CNC system dynamically compensates for rebound, and the angle error is ≤±0.1°, meeting the classification society’s requirements for pipeline sealing.
The pressure sensor is configured to monitor the wall thickness reduction rate in real time to ensure that the ovality is ≤3%.
B. Anti-corrosion and enhanced design
The pipe bending die is chrome-plated, and the pipe is automatically sprayed with silicon-based lubricant before bending to reduce surface damage.
For seawater pipelines, the equipment must support the inert gas protection pipe bending process.
5.Safety and certification requirements
Pressure test : The pipe after bending must pass a 1.5 times working pressure test, and the pressure drop must be ≤5% for 10 minutes of pressure maintenance.
Weld management : CNC models must record welding parameters and support ultrasonic detection interfaces.
Operation safety : The hydraulic system automatically locks the mold when it exceeds 14MPa to prevent high-pressure splashing.
Our equipment has CE, ISO quality inspection certificate, so the quality is guaranteed to be cost-effective. According to different processing requirements, machines can be customized to fit for your usage, to provide customized services. In the processing period, we strictly control the production process, to ensure the quality of clearance, standardize the process, strict implementation.
