A رافعة بحرية is designed for use at sea and port, primarily used to transfer goods between ships, supply marine materials, and deliver and recover underwater equipment.
Given the harsh operating conditions, it is crucial to ensure the quality of the crane. Therefore, having knowledge of the manufacturing process of a marine crane can help in purchasing high-quality marine cranes.
All lifting machines, hoisting accessories and other equipment designed by OUCO are manufactured according to strict guidelines. We follow applicable national and industry standards and update them in a timely manner. Our technical department has extensive experience in managing crane documents.
In the following content, OUCO will introduce you how to build a marine crane.
Our sales managers and engineers will communicate with customers to obtain information about their crane model selection, customization needs, specifications, and classification society (IACS) certificate requirements. Once all requirements are finalized, our engineering team will design a general arrangement drawing of the crane.
After the technical team completes the design of the crane sketch, it is usually reviewed by the client and the corresponding classification society for the project. After the client and classification society approves the design, we start creating detailed drawings with complete engineering instructions and send them to the engineering department for material procurement and fabrication.
At OUCO, we give great importance to material inspection. We select the appropriate classification society inspection based on customer requirements, and they double-check the materials. A strict review of the materials ensures the quality of our products.
Typically, we use Q345B steel plates, but for products used in colder areas, we use Q345C or Q345D steel plates that can withstand sub-zero temperatures. If you have special requirements, such as corrosion-resistant AH36 ship plates or stronger S690 and HG70 ship plates, we can customize according to your needs.
Raw Material Handling
The next step involves the blanking, cutting, and forming of shipboards and raw materials, which are managed by our rough machining team. OUCO’s production workshop is equipped with high-precision CNC plasma cutting machines, laser cutting machines, and advanced processing centers.
We choose the appropriate cutting method according to your needs to ensure the optimal processing of raw materials.
The riveting and welding process is handled by our welding team, which follows the Welding Procedure Specification. Our welding team comprises senior technicians with classification society certification and AWS certificate. We strictly adhere to the manufacturing standards of marine cranes.
اختبار غير مدمر
Once the welding team completes their work, inspectors from the classification society conduct non-destructive tests, such as radiograph or ultrasonic testing, to ensure the product’s safety and reliability.
Crane Painting & Coating
To ensure the longevity and durability of our cranes, we never skip the sandblasting (SA2.5) process before painting the various components. While some companies may neglect this step to reduce costs, it’s crucial to prevent the primer from peeling off under natural conditions.
Furthermore, we use a high-quality epoxy zinc-rich primer that dries quickly, has strong adhesion, and provides excellent anti-corrosion protection. Coating thickness is up to 300 µm and meets the C5M marine standard, ensuring our cranes can withstand harsh marine environments.
The final step in the manufacturing process is machining. Our specialized machining team will use a variety of machines for boring, lathing, milling, planing, and drilling operations.
After the purchased parts arrive at our factory, we begin the assembly process for your machine.
It’s worth mentioning that OUCO equips each crane with internationally renowned brand components such as ABB motors, Rothe Erde slewing rings, DANFOSS proportional valves, Brevini (DANA) winches, ATOS cylinders, and Siemens electrical systems.
Load testing and acceptance testing by the classification society are essential components of the manufacturing process. A surveyor conducts the final acceptance, and after passing the inspection, the classification society issues a certificate of conformity.
If you prefer, you may also send someone to our factory to inspect the crane’s load operation.
Marine Simulation Test
Our engineers will install the crane on a specially designed platform that simulates the ocean environment for a load test, which includes simulating the trim and heel required by the customer at the specific sea state level. This test is conducted to evaluate the offshore operation capability of the marine crane.
التعبئة والتغليف والشحن
Our shipping team is responsible for packaging your crane, transportation, and liaising with the freight forwarding company. They will provide you with the most cost-effective shipping plan to ensure your crane arrives at its destination safely and on time.
That’s the manufacturing process of our crane in a nutshell. Of course, this is just a rough guide.
If you have any questions about a specific step, or if you want to learn more, feel free to ask us. Our support team will explain everything to you in detail.