Modern drill pipe is made from the welding of at least three separate pieces:
the box tool joint, the pin tool joint and the tube.
The green tubes are received by the drill pipe manufacturer from the steel mill.
The ends of the tubes are then upset to increase the cross sectional area of the ends.
The tube end may be externally upset (EU), internally upset (IU), or internally and externally upset (IEU).
Standard max upset dimensions are specified in API 5DP, but the exact dimensions of the upset
are proprietary to the manufacturer.
After upsetting, the tube then goes through a heat treating process.
Drill pipe steel is commonly quenched and tempered to achieve high yield strengths
(135 ksi is a common tube yield strength).
Packaging of Carbon Steel Pipe/Tube
Shanghai Metal Products are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.
1) Shanghai Metal Standard
We provide wide range of sizes for different applications:
Surface Treatment: Oiling, Painting, Galvanizing, Anti-corrosion, Polished, etc.
If you have any requests or question, please contact us for more details.