1)Fast drilling rate

2)Strong cutting structure durability

3)be used for water well, oil field, underground, construction, geothermal, directional boring

4)Be used to drill low compressive strength,soft formation

5)various of model and dimension avaliable

6)rubber seal or metal seal

7)high quality and competitive price

8)we can provide the sample ,but customer need to pay all cost

    We are Hejian Tengda Petroleum Supplies Co., Ltd.Our factory specialized in manufacturing and exporting of rock bit and PDC bit with all IADC Code and assemble bits.. In addition, we produce drilling rig, mud pump ,Diamond Drill and other accessories. And we also sell and buy scrap bits. Our purpose is to sell the best quality products at the lowest possible price.

Our Commitment to Quality and to Our Customers
The entire Tengda organization is dedicated to delivering the highest quality of engineering, design, manufacturing, sales, and customer service in order to fulfill on our Mission Statement:

"We will deliver ever-increasing value to our customers and other stakeholders by exceeding industry standards for performance, service and innovation."

Our Values
We believe that people make a business successful. We are a team of passionate people who:

                     Value our employees for their dedication and innovation

                     Are accountable to our stakeholders

                     Reliably provide high quality products and service

                    Ethically interact with our customers, competitors, vendors and community

                     Lead in generating value for our customers

Model
IADC CODE	116 117 12 6127 136 137 216 217 226 226 316 317 326 327 336 337 115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347
	417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625 635 416 427 436 446 447 516 526 537 547 516 536  535
available sizes:	From 3 3/4'' to 26" or assemble bits larger sizes for hole opener bit ,reamer bit
advantage	favourable price and good qualtity
bearing type:	sealed bearing and non-sealed bearing HJ(metal sealed journal bearing)   HA (rubber sealed journal bearing)
Formation or layer	soft ,medium soft ,hard,medium hard,very hard formation
Application	petroleum&gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, oritented drilling, and other underground foundation work