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Hejian Zhongcheng Drill Bit Manufacturering Co.LTD. .(SRF) was established in 1997. It is a privately owned and proudly company. We have grown to become a leading manufacturer of tricone bit and supplier of high quality drilling tools & equipment, and we excel in designing, manufacturing, and distributing construction industry drilling tools as well as finding custom solutions to complex problems. Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop.
Hejian Zhongcheng Bit Manufacturering Co.LTD, our brand " SRF" maintains a strong reputation in the construction, exploration, water well, geothermal, mining, and oil & gas industries as a company that can provide dependability and high quality products at excellent value.
" SRF" includes: Tricone bit( steel tooth & TCI bit),PDC drill bit (marix & steel body),step drag bit,HDD Reamer bit (Hole opener),Stabilier,Drill pipe,drill rod,Rock Auger,……
Our broad spectrum of customers allows us to offer a dynamic range of products and solutions, you can trust us to meet your industry"s demands. From working with drilling tool designers, custom part design, drafting, implementation to machining fabrication, assembly and distribution, we are ready to meet any of your industry"s drilling challenges. At " ZHONGCHENG" we feel it is important to work closely with both our customers and suppliers to develop a relationship based on trust and cooperation.
Our company"s machine shop uses state of the art CNC's to manufacture parts to extremely high precision and accuracy. We constantly acquire and stock quality raw materials to reduce lead times on our products, and work closely with our customers to continuously improve their products in an effort to reduce their cost per foot when drilling.
" Hejian Zhongcheng Bit Manufacturering Co.LTD. (SRF)" has a large machine shop with numerous high quality CNC Lathes and Mills including a 4 Axis 26" Diameter Spindle Bore Lathe. We have a large welding area, and commonly preform ARC, MIG, TIG and pressure welding applications. So if you have any request for the Drill bits,drilling tools,please Call us or send inquiry to US at any time.
Kingdream Tci Tricone Bit (IADC417 437 517 537)
Tricone Bit
Soft Formation TCI Tricone Bit
The 437 TCI bits are used to drill low compressive strength , very soft formation. TCI bits maximize the use of both conical and chisel tungsten carbide inserts of large diameters and high projection. This cutting structure design , combined with maximum cone offset , results in high bit penetration rates . The deep intermesh of cutter rows prevents bit bailing in sticky formations. Such as: shale, clay, sandstone, conglomerate
Medium Formation TCI Tricone Bits
This 517 bit features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium-to-medium hard formations. The HSN rubber O-ring provides adequate sealing for bearing durability . Such as: shale , clay , sandstone, soft limestone
IADC CODE: 112 121 131,127 , 137,215 216 217 , 311 312 315 317,327,417 427 437,415 425, 435,517,527 , 537,547,517,525,535,617,627,637,647,625,635,637,712,737,837,832
Medium – hard Formation TCI Tricone Bits
The 617 fectures robust chisel tungsten carbide inserts on the heel row and conical on the inner rows . This design provides a fast drilling rate and added cutting structure durability in medium hard formations. The HSN rubber O-ring provides adequate sealing for bearing durability . Such as: hard shale, limestone, sandstone, dolomite.
Hard Formation TCI Tricone Bits
The 637 bits can be used to drill high compressive strength, hard and abrasive formations. Wear – resistant tungsten carbide inserts are used in outer rowsto prevent loss of the bit gauge . Maximum number of the hemispherical – shaped inserts are used in all rows to provide cutter durability and long life . Such as : limestone, dolomite, malmstone, chert.
Note: All types , sizes and IADC codes of TCI tricone bits are available .