As we all know that in the market there are lots of type port crane machinery for sale, with different price, different quality, it is really hard for customer to choose one from this big market. Now our article is to give you some tips for choosing a suitable crane to your project. Important details are below: to see the motor capacity and brand, wire rope condition and diameter, steel pipe thickness, material quality for crane mechnical part, welding condition, paint film thickness and whole design rationality.