Coupling sleeve t38 t45 t51for threaded drill rod in rock drilling / mining / tunneling / quarrying

Qingdao Worldrill Co., Ltd is one of the biggest enterprises in China specializing in research and manufacture of rock drilling products and pneumatic tools. It has a complete set of equipment for producing rock drilling products and pneumatic tools. (The key equipment is the most advanced one in the world). With its abundant experience in research and production, using the highest quality raw materials, through advanced technology and rigorous testing methods, our company has produced products with excellent performance and quality.

Our company mainly researches, designs and manufactures the following products: high pressure DTH hammers (which are the most advanced products in the field in China), all kinds of DTH bits, eccentric drilling tools for drilling with casing in the cover rocks and loose rocks, all kinds of threaded bits, RC reverse circulation hammers and bits, shank adaptors and coupling sleeves, various kinds of tool joints and drill pipes, and spare parts for drilling rigs, etc. The performance of these products is domestic leading and world first-class. The products have gained certificates including ISO 9001, API, SGS, CE, etc. "WORLDRILL" drilling tools own a good market all over China for the good quality and high performance. Meanwhile, the company is still actively exploring overseas market. "WORLDRILL" products have been exported to more than 50 countries including Australia, South Africa, Zambia, Tanzania, Korea, Malaysia, etc.

About our Product Technology and Advantages
"WORLDRILL",manufacturing drilling tools, is a leading brand in China, and the DTH Hammers without foot-valve are the most popular products in particular. Compared with the DTH Hammers of the same specification with foot-valve, the advantages of DTH Hammers without foot-valve are as follows: 1. Higher impact frequency and faster drilling speed, with the speed being 15%-20% higher than the ones with foot-valve; 2. Lower air consumption and lower oil consumption, with 10% of the oil consumption saved; 3. Avoid the trouble of foot-valve fracture and expand when heated, or the contraction when cooled; 4. Fewer internal parts, simple in structure, long in service life, and easy to assemble and disassemble. The new type hammer has been well received by users since its launch. Hammering tests have been carried out on the hardest iron ore mine in China. Compared with the products from SANDVIK and ATLAS COPCO, the new type fast hammer produced by our company is about 10% faster in terms of speed. Besides, since the thickness of the external cylinder of the hammer from our company is increased, its service life is longer than others. As to bits, the quality of products provided by our company is comparable to those from the above mentioned two companies; in the meantime, the cost performance of drilling tools branded "WORLDRILL" is much higher than those branded SANDVIK and ATLAS COPCO.

Pre-sale service:

1.Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments . Select     equipment model.
2.Design and manufacture products according to client's special requirement ;
3.Train technical personnel for clients .

Services during the sale:
1.Pre-check and accept products ahead of delivery .
2. Help clients to draft solving plans .
3.After-sale services:

Provide considerate services to minimize clients' worries.
1.Complete After-sales service,professional engineers available to service machinery at home or oversea.
2. 24 hours technical support by e-mail.
3.Other essential technological service.