China P650 Alloy Drill Collar

Huhou Zhuoli Special Steel Trade Co.,Ltd is professional seamless steel pipe & tube supplier for Oil/gas field , machinery Engineering,Chemical equipment,Boiler,Cryogenic Device,Gas Cylinder ,Military and so on, in addition , we can supply our customers of professionalTechnology solutions and excllent after-sale service .
We warmly welcome customers home and abroad to visit our company and give us valuable suggestions . we would like to have a long-term cooperation with customers from all of the world on the basis of mutual prosperity and development !!
The seamless steel pipes/tubes for Oil/Gas field we manufactured are used to make petroleum machinery , Oil drilling tools and other Oil relevant components. The products are widely used in the exploitation of oil and gas wells under complex conditions such as shale gas , ultra-deep wells and corroded environmental wells . Because of the excellent perfromance and long service life , the products have been recognized by the world's top five famous oil service Providers such as Baker Hughes ,Weatherford ,Schlumberger,CNOOC(China National Offshore Oil Corporation), CNPC(China National Petroleum Corporation).

Non-magnetic Drill Collar
1. Standard : API 7-1
2. Size: 3 1/8''-11''
3. Length: 10'-31'
4. Material : AISI 4145H ,AISI4145H mod,Mon-mag material
The spiral drill collars are made of 4145H modifiedchromium-molybdenum alloy steel according to API Spec.7 and SY/T5144 .All threads can be phosphated ,copperized or cold worked .All threads are machined with CNC Lathed-DoubleShouldered and a special thread , the max diameter of drill collar is 14 inch.
The detalis of Oil drill collar :
1.Material: Non magnetic steel
2. Shape : It is round pipe with smooth surface and think wall , and both ends are machined screw thread for connection.
3.Use: it is mainly used for inspection in the precess of petroleum drilling.
4.Standard : API Spec 7-1 or SY /T5144 Standard .
5.Magnetic permeability (MPS=1X105/4 A/m)
Products Show
Application for Oil& Gas :

Weatherford & Schlumberger Specification :
Professional Testing
Packing & shipping