1,boring bit ,tricone drilling bit 2,certified by API,ISO 3,delivery on time 4,best price 5,wide code size Types of assembly were producted from Deris company.Welcome to come to our factory.Hejian Deris Petroleum drilling Equipment Co.,ltd specializes in the manufacture...

1.Reliable bearing system 2.Fast drilling rate 3.Strong cutting structure durabilit 4.Certification: API 5.All IADC code tricone roller drill bit1.Applicable: water well , oil field , construction , geothermal , directional boring , underground foundation work2.Sealed bearing...

1.Reliable bearing system 2.Fast drilling rate 3.Strong cutting structure durabilit 4.Certification: API 5.All IADC code tricone rock drill bit1.Applicable: water well , oil field , construction , geothermal , directional boring , underground foundation work2.Sealed bearing...

HQ diamond core bit for oil drill good quality and long working life rensonable price     We are Hejian Deris Petroleum drilling equipment Co., Ltd Drilling Supplies Marketing Dept. specializes in drill bits, drill pipe, Mud pump and stablizers for water well, oil...

HQ diamond core bit for oil drill good quality and long working life rensonable price     We are Hejian Deris Petroleum drilling equipment Co., Ltd Drilling Supplies Marketing Dept. specializes in drill bits, drill pipe, Mud pump and stablizers for water well, oil...

1.Be used to drill low compressive strength , soft formation 2.Strong cutting structure durability 3.Fast drilling rate     118 single  tooth drilling bits / bit1.Button bit: small tooth , big tooth , conical inserts , chisel inserts2.Applicable: water well ,...

1.Be used to drill low compressive strength , soft formation 2.Strong cutting structure durability 3.Fast drilling rate     118 single  tooth drilling bits / bit1.Button bit: small tooth , big tooth , conical inserts , chisel inserts2.Applicable: water well ,...

1.certification:API 2.High quality, low price 3. good after-sales service 4.wide size code 5.max derilling depth:2000m  I am Edda Ju at your service any time !!!  6"kingdream new single cone bit for water well soft & hard formation...

1.certification:API 2.High quality, low price 3. good after-sales service 4.wide size code 5.max derilling depth:2000m  I am Edda Ju at your service any time !!!  6"kingdream new single cone bit for water well soft & hard formation...

1.certification:API 2.High quality, low price 3. good after-sales service 4.wide size code 5.max derilling depth:2000m  I am Edda Ju at your service any time !!!  6"kingdream new single cone bit for water well soft & hard formation...