Drill Pipe
Classification :
Keywords:
Oil country tubular goods
PRODUCT DETAILS
Description
Drill pipes are long tubular sections of pipe that make up the majority of the drill string. They are typically a 31 foot long section of tubular pipe but may be anywhere from 18 to 45 feet in length.
Heavy weight drill pipe (HWDP) is a tubular pipe that adds weight or acts as a transitional piece in the drill string. As a transitional section of the drill string, it is placed between the drill collar and standard drill pipe to reduce fatigue failures. In other applications the HWDP is used as an additional weight to weigh down the drill string.
Heavy weight drill pipe is a medium-weight drilling pipe, (referred standards in API SPEC 7-1). It has bigger wall thickness than common drilling pipe and smaller than drill collar.
Drill collars are a component of the drill string that makes up part of the BHA. They are thicker-walled, heavier, and more rigid than drill pipes and are primarily used to weigh down the drill bit while dampening vibration and impact forces.
Drill Pipe:2-3/8" to 7-5/8" OD, Range 2 and 3
Heavy Weight pipe:2-3/8" to 6-5/8" OD, Range 2 and 3
Drill Collars:2-7/8" to 14"
Grades: E75, X95, G105, S135
Connection threads:NC26, NC31, NC38, NC40, NC46, NC50, 5 1/2FH.6 5/8FH.
Internal Upset: IU, EU, IEU
Specification
| Size designation | Calculated weight | Tool joint designation | Calculated weight | grade | Wall thickness | Upset ends | ||
| in | 1b/ft | Kg/m | in | mm | ||||
| 2 3/8 | 6.65 | NC26 | 6.26 | 9.32 | E.X.G.S | 0.28 | 7.11 | EU |
| 2 7/8 | 10.4 | NC31 | 9.72 | 14.48 | E.X.G.S | 0.362 | 9.19 | EU |
| 3 1/2 | 13.3 | NC38 | 12.31 | 18.34 | E.X.G.S | 0.368 | 9.35 | EU |

PACKING AND DELIVERY
Packing and delivery
The company has been committed to the steel industry for many years, accumulated rich experience and technology, and has a professional team and advanced production equipment. The company mainly produces various steel products, including steel plates, steel pipes, steel coils, steel sections, galvanized color coating, etc., which are widely used in construction, machinery manufacturing, transportation and other fields.

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FACTORY APPEARANCE
The company has been committed to the steel industry for many years, accumulating rich experience and technology, and has a professional team and advanced production equipment. The company mainly produces various types of steel products, including steel plates, steel pipes, steel coils, steel profiles, galvanized color coatings, etc., which are widely used in construction, machinery manufacturing, transportation and other fields.
APPLICATION AREAS
Shandong Yiyi Iron and Steel Company always adheres to the business philosophy of "quality first, customer first", focusing on product quality and customer service. The company strictly controls every aspect of the production process to ensure stable and reliable product quality.
PRODUCT TESTING
The company has established long-term cooperative relationships with many well-known domestic and foreign enterprises, and its products are exported to both domestic and foreign markets, winning unanimous praise from customers.
CUSTOMER VISIT
The company will adhere to the principles of honest management and win-win cooperation, and work together with customers to create a better future.
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