| Manufacturing Process: | Friction,Nitriding |
|---|---|
| Surface Treatment: | Other |
| Operation Pressure: | Atmospheric Pressure |
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1: OD: 2 7/8"(73 mm)
2: Connection: 95mm/105mm
3: Grade: E75/R780
4: Length: RI, RII, RIII (2~12.5 meters)
Process description:
1. Strictly according to API 5DP standard
2. Yield strength: Min 517 Mpa
3. Tensile strength: Min 724 Mpa
4. Pipe body material: High quality alloy seamless pipe of E75
5. Thread treatment: Phosphorization or copper plating
Features:
1.Application hard, very hard,and medium soft sock formation.
2.Reliable quality,long service life,rare abnormal breakage during service life
3.Good flushing effect to ensure high drilling rate
4.Strict quality warranty and compensation rules
Application:
Used inholedrilling works, such asminingblasting,water welldrilling,geothermal welldrilling,pipe roofsupport,coalandnon-ferrous metalminingprojects
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