1. Manufactured in compliance with API specification 7.

2. Thread root are cold rolled for increasing work life.

3. All connections are phosphate to help galling during make-up.

4. Hard banding is standard on tool joint connection and central upset to optimize wear resistance.

5. HWDP joint is fully inspected by ultrasonic unit full length.

6. Spiral HWDP consists of three spiral upsets equally space between tool joints.