CN107060657A
|
|
The attachment structure of aluminium alloy coring tool inner cylinder nipple
|
CN107058684A
|
|
A kind of Technology for Heating Processing after the rolling for 12Cr1MoVG Steel Tube Specials
|
CN106734668A
|
|
A kind of seamless steel pipe hot-expanding pipe processing method and hot tube expanding machine core print
|
CN106756500A
|
|
High-intensity high-tenacity seamless steel pipe for gas cylinder and production method
|
CN106529092A
|
|
Finite element calculating method of shear deformation force of well casing
|
CN106399829A
|
|
High-strength high-toughness corrosion-resisting martensitic stainless steel oil well pipe and manufacturing method thereof
|
CN106282782A
|
|
High alloy hot-puncturing process comes directly towards
|
CN106363022A
|
|
Method for improving quality of inner surface of titanium alloy seamless steel tube
|
CN106334713A
|
|
Hot rolling lubrication process method for titanium alloy seamless tube
|
CN106269981A
|
|
It is applicable to the production method of the titanium alloy seamless pipe of drilling rod material
|
CN106319367A
|
|
125 ksi high-strength and high-toughness petroleum casing pipe for exploring thickened oil through SAGD method and manufacturing method thereof
|
CN106168122A
|
|
Special threading connector attachment structure for titanium alloy oil well pipe
|
CN106352770A
|
|
Limit gauge applicable to multiple specifications of steel pipe inner diameters
|
CN106194052A
|
|
High-performance nipple special buckle oil well pipe metal to metal seal structure
|
CN106285506A
|
|
Oil well pipe thread coating lubrication system and manufacture method
|
CN106168121A
|
|
It is applied to the integral threaded joint design of the tube upset of tubing and casing
|
CN106054818A
|
|
Intelligent control device of constant torque during billet cutting and operating method
|
CN105936966A
|
|
Method for preventing walking beams of steel pipe walking heat treatment furnace from being bonded with steel
|
CN106077097A
|
|
Improve structure and the manufacture method of perforation unit top surface property
|
CN105921524A
|
|
Controlled rolling method in seamless pipe hot rolling process
|