Custom Large and Heavy Duty High Quality Helical Ring Gear

Shandong Defa Company is a Chinese partner of leading foreign industrial equipment, technology, materials and product processing, specializing in providing domestic advanced processing and manufacturing solutions for foreign related industries. We are the business bridge between global enterprises and China for the trade of advanced equipment and parts processing and manufacturing. Our company has long-term cooperation with Chinese state-owned enterprises to provide high-quality services and quality assurance to global customers.

Our long-term partners have complete production workshops equipped with modeling, casting, riveting and welding, machining, heat treatment, etc., as well as a sound production and operation management system including R&D design, production management, quality control, marketing, and after-sales service.In October 1998, we had the ISO9001 quality system certification and established a nationally certified physical and chemical, metrological inspection laboratory with complete inspection equipment and advanced testing methods.

Workshop and Equipment display:
Hot Processing Division: owns 1 set of 15t electric arc furnace, 2 sets of 5t electric arc furnaces, and 1 set of 30t LF refining furnace. It can provide 130t ordinary molten steel and 60t refined molten steel at one time. The net weight of a single casting can reach 75t. 1 set of VD/VOD VC vacuum refining furnace, can be vacuum blowing oxygen decarburization chromium preservation, heating, argon stirring, vacuum degassing, slagging, alloying and other operations, provide 30t vacuum degassing molten steel and 30t stainless molten steel, suitable for stainless steel, industrial pure iron, precision alloy, superalloy and alloy structural steel smelting. Especially the smelting of ultra-low carbon stainless steel and alloy steel. With the maximum loading capacity of 200t automatic temperature control annealing kiln, ceramic electric heating annealing device and other heat treatment equipment, suitable for large kiln grinding castings and cylinder heat treatment process. It has the largest Φ1.6m medium frequency quenching machine in China, which can quench the surface of large shaft parts. In addition, the special heat treatment means of important parts are relatively complete.
 

1. How long is the delivery time of your machine?
The delivery time is within 20-30 working days. But if the spare part is very large and clients have some special requirement about the equipment, the delivery time will be extened.

2.What are the payment terms?
The payment terms are L/C, T/T, D/A, D/P and other.

3.What is the minimum order quantity of your machine?
1 set. Our service will be to satisfy the needs of every client.

4.How long is the warranty period about machine?
Our machine warranty period is 1 year. Wearing parts and problem coursed by worker's wrong operation are not included.

5.What is the after sale service of your company?
We will provide foundation drawing to the clients for installation. Besides, we can provide installation service, workers training service, etc.

6.Can you provide wearing parts?
We have four casting factories that specialize in producing wearing parts for our clients. If your machine are not manufactured by our company, please provide us the wearing parts drawing.

7.Can you provide me a solution and quotation?
Please give us your details about project, raw material, the capacity, max feeding size, the output size, the usage of final products, etc.