3 5 inch crossover sub drilling

Brand Name:ENG

Model Number:4500

Place of Origin:China

Crossover Sub 3-1/2in Connecting Of Uppper Drilling Tool Description : Cross-over sub acts for conversion and connection of drill stem component in petroleum,natural gas and geology drilling work. It is used mainly for connecting of upper drill tools and ...

Brand Name:JS

Place of Origin:Hebei, China

...increments of 2 inches with AISI 4145H, AISI 4145H Mod, AISI 4340, AISI 4140-4142 and Non-magnetic material. All connections are phosphate-coated or copper plated to improve resistance to corrosion. Crossover subs come in three basic types: A Pin (male)

Brand Name:MIROC

Model Number:DTH Sub

Place of Origin:China

... operations. Also it can be used to protect other tooling in drill stem (called saver sub) or be used to deliver outgoing air to the bit face just above the bit (called bit sub). The length of crossover subs is generally measured from shoulder to shoulder.

Brand Name:ROSCHEN

Model Number:5’, 10’, 15’, 20’

Place of Origin:Germany

.... 3. Strick quality control. Rotary Subs: Roschen rotary subs include: Straight OD subs Reduced section OD subs Crossover subs Bit Subs Saver Subs Side Entry Subs Pump In Subs The rotary subs are available in standard sizes specified in API and in a

Brand Name:TOPLAND

Model Number:TDS 11SA

Place of Origin:CHINA

...er the special heat treatment process to achieve the desired hardness and strength and impact resistance. API Specification Top Drive Saver Sub For Oilfield Specification Item O.D. I.D. OAL Connection (mm/inch) (mm/inch) (mm/inch) API 1 187(7-23/64) 44.5(1