Integral Heavy Weight Drill Pipe
The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is simliar with drill pipe. It is made from premium alloyed steel. Its both tool joints and middle upset are welded hard bands. Technical parameters meet with API Spec7-1 Standard.
Thechnical specifications and parameters
Size | O.D. | I.D. | Tool Joint O.D. | Tool Joint I.D. | Thread type | Max.elevator diameter | Central upset dia. | Min drift dia.size |
3 1/2 | 3 1/2 | 2 1/4 | 4 3/4 | 2 1/4 | NC38 | 3 7/8 | 4 | 2 |
2 1/16 | 2 1/16 | 2 13/16 | ||||||
4 | 4 | 2 1/2 | 5 1/4 | 2 1/2 | NC40 | 4 3/16 | 4 1/2 | 2 1/4 |
2 9/16 | 2 9/16 | 2 5/16 | ||||||
4 1/2 | 4 1/2 | 2 11/16 | 6 1/4 | 2 11/16 | NC46 | 4 11/16 | 5 | 2 17/16 |
2 3/4 | 2 3/4 | 2 1/2 | ||||||
213/16 | 2 13/16 | 2 9/16 | ||||||
5 | 5 | 3 | 6 5/8 | 3 | NC 50 | 5 1/8 | 5 1/2 | 2 3/4 |
5 1/2 | 5 1/2 | 3 1/4 | 7 | 3 1/4 | 5 1/2FH | 5 11/16 | 6 | 3 |
3 3/8 | 3 3/8 | 3 1/8 | ||||||
3 7/8 | 3 7/8 | 3 5/8 | ||||||
4 | 4 | 3 3/4 | ||||||
6 5/8 | 6 5/8 | 4 | 8 | 4 | 6 5/8FH | 6 15/16 | 7 1/8 | 3 3/4 |
4 1/2 | 4 1/2 | 4 1/4 | ||||||
5 | 5 | 4 3/4 |
Manufacturing technique:
1. Process: EAF + LF + VD + Forged + Heat Treatment (optional)+Fine machined
2. Heat treatment: Normalized / Annealed / Quenched / tempered
3. Delivery condition: Hot forged +Rough machined +Turned (optional)+fined machined
Test: UT & MT testing
1.Our drill pipes are mainly made from 4330V forging steel.
2.The physical properties are guaranteed one inch below the surface at normal temperature.
3.Heat treated by water quenching and tempering,rough machined as the drawing dimensions.
4.Strict UT inspection according to ASTM A-388 to guarantee high quality.
5. Tungsten Carbide alloy buttons were inserted into blades so as to keep its hardness.
Company Introduction
Xi'an KINGWELL OILFIELD MACHINERY Co., Ltd. (KINGWELL) is a highly reputable supplier for oilfield equipment and services to Oil & Gas industries and provides complete solutions.
With over 10 years developing, we were developed from the beginning drilling service to manufacture factory who produce OCTG, drilling tools, DST tools and Solid control products.
KINGWELL have experienced team, stronger enough to meet any challenge, we do believe honest is the base of business and cooperation; our aim is to build solid relationship with any part of honest. kingwell can provide highly efficient services to its clients resulting in accurate and timely deliveries at the best prices. Our products have been exported to Europe, American and Middle East.
