HJ assembly drillling bits
1.Brief introduction of our company
Hejian Hengji Bit Manufacture Co.ltd. is located in Xicun development zones Hejian Hebei China(mainland). Our company has a complete set of equipment which is up to national advanced standard and rich experience in manufacturing bits and managing bits company. The production of bits is in line with the international standard, national standard and the ministerial standard. Beside we can produce the bits according to the requirements of the customers. Our major products are a series of bits products such as tri-cone bits, steel tooth bits, single tooth bits, rubber sealed bearing bits, metal sealed bearing bits, PDC bits, etc.
Our products are mainly sold overseas markets, such as USA, Europe, Southeast Asia, etc. With good equipment, fine craftsmanship, high quality products as well as reasonable price, our company has won a good reputation and trust of our clients.
2.Packing and delivery
Packing: wooden case or as your requirements
Delivery: depend on the contract
3.Payment
Payment: T/T Western Union
4.The advantages of our products.
1.Reasonable price,durable
2.adapt to the soft, medium and hard of various strata
3High-strength, high flexibility,, high wear resistance
4.Optimal hydraulic design,easy to move out the drill cuttings and cooling.
5..Equipped with back reaming teeth.
6.The cutter is high performance to increase the ability of anti-impact and anti-abrasive.
IADC | Recommended Parameter | Formation | |
WOB KN/mm (bit dia.) | RPM(r/min) | ||
417\437\447 | 0.35~0.8 | 240~60 | Very soft low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc. |
517\527 | 0.35~1.0 | 220~50 | Very soft with low compressive strength and high drillability,such as mudstone,salt,soft limestone,sands,etc. |
537\547 | 0.45~1.0 | 220~50 | Medium soft with harder,more abrasive streaks,such as hard shale,mudstone,soft limestone,etc. |
617\627 | 0.45~1.1 | 200~50 | Medium hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc. |
637 | 0.45~1.1 | 180~40 | Medium hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc. |
737 | 0.7~1.2 | 180~40 | Hard with high abrasiveness such as hard limestone,dolomite,firm sands,etc. |
827\837 | 0.7~1.2 | 150~60 | Very hard with high abrasiveness,such as quartzite,quartzitic sand,chert,basalt,granite,etc. |
