A crane manufacturer should be judged by more than a low price and a polished product photo. Cranes are heavy equipment. Once steel is cut and the project is on the water, small misunderstandings become expensive. A better supplier conversation is practical: factory capability, welding quality, inspection routine, documents, packing and response after delivery.
This checklist is for buyers comparing manufacturers for overhead cranes, gantry cranes and export lifting projects. You can also review our company profile and export cases while checking suppliers.
Factory capability
Ask what is made in-house and what is outsourced. A strong manufacturer should be able to explain steel preparation, cutting, welding, machining, assembly, painting and trial installation. The point is not to reject all outsourcing. The point is to know who controls the critical work and how quality is checked before shipment.
Welding and structure
For bridge and gantry cranes, the girder is the heart of the machine. Look for consistent welding, straightness control, proper correction after fabrication and inspection records. A supplier should be comfortable discussing welding process, inspection method and how deformation is controlled during fabrication.
Our company news often shows the factory culture behind this work, including welding and machining competitions. Those updates are collected in the news section.
Testing before delivery
Ask what is checked before the crane leaves the factory. Electrical cabinets, motors, brakes, limit switches, controls, hoists and travel mechanisms should not be treated as loose parts thrown into a container. For many projects, trial assembly, dimensional checks and no-load testing reduce site risk. Load testing requirements depend on project scope and local rules, so define them early.
Documents matter in export projects
International buyers should ask for drawings, packing list, manuals, certificates, installation guidance and spare part information. If the destination country has specific compliance needs, tell the supplier before manufacturing starts. Document corrections after shipment are possible, but they waste time and can delay customs or installation.
Delivery and packing
Export packing is not glamorous, but it protects the project. Large crane components may need disassembly planning, moisture protection, clear marks and a loading plan that matches the site installation sequence. Ask for packing photos before shipment. They are useful for both customs and the installation team.
After-sales response
A good crane manufacturer does not disappear after the balance payment. Ask who answers installation questions, what spare parts are recommended, and how technical support is handled across time zones. For critical plants, discuss maintenance planning and wear parts before the crane is commissioned.
A practical supplier check
- Can the supplier read and respond to your layout drawing with clear questions?
- Do they explain why a design is recommended, not only what it costs?
- Can they show relevant cases for your industry?
- Are product photos, factory photos and documents consistent?
- Do they provide a realistic delivery schedule?
If you want to compare a project with our factory capability, send the drawing or inquiry through Kuangshan Heavy Machinery. For similar project references, start with our crane export cases.
