The large welded structures such as trolley, cable drum, bogie frame etc, through gas annealing furnace annealing treatment to guarantee product after-welding precision, Henan Yuntian Crane CO .,LTD.  has car-gas annealing furnace, net size inside the furnace is 10000mmx4000mmx4000mm car-gas annealing furnace, can meet all kinds of small medium and large welded structure stress relief annealing after welding on the crane such as trolley, cable drum, bogie frame, balance beam, spreader.                                              

According to the clients’ demands, the crane can be add our company patent-electric anti-sway, this is the world's leading technology, first to achieve lean management, lean production in crane field, and promote the further improvement of product quality.

1. Quality problems of products sold by our company will be solved as per the “three guarantees” system of our company by the “three guarantees” service team;

2. Related personnel will be sent to the site immediately after receiving quality complaints (by call, letter or oral notice) from clients;

3. Personnel involved in after-sales service shall be serious and considerate in handling the problem to make clients care-free;

4. In addition to solve quality problems, personnel involved in after-sales service shall train clients, answer their technical inquiries and related questions free of charge;

5. Related cost for products with quality problem will be shouldered by our company. Our company charges for quality problems caused by clients (or problems after the warranty term), but the charge will not be higher than the expense (or cost);