drilling pipe

drilling pipe

Use:Well Drilling
Type:drilling pipe
Processing Type:Forging

API 5DP NC40 4″/3 1/2″ E75 / X95 / G105 /S135 oilfield drilling pipe

Main feature:

A. The drill rods comply with the provisions of  API SPEC 5D & API SPEC7.

B. The grade of steel are determined according to the requirements of Group

    1 & Group 3 of API SPEC 5D.

C. Drilling pipe joints at the same level comply with the provisions under the Standard

    API SPEC 7.

API Oil Drilling Pipe
Standard: API 5D
Size: 60.3 ~ 168.3mm
Grade: E75,X95,G105,S135

API 5DP NC40 4″/3 1/2″ E75 / X95 / G105 /S135 oilfield drilling pipe Feature:

A. High precision in size and shape

B. Good low temperature toughness

C. Excellent comprehensive mechanical properties

D. High connection strength and sealability

E. Large inside diameter of tool joint

F. High  torque resistance

G. High fatigue strength and long fatigue life

Internal Coating for API 5DP NC40 4″/3 1/2″ E75 / X95 / G105 /S135 oilfield drilling pipe Feature:

A.High abrasion resistance and low friction factor

B. Good adhesion and flexility

C. High application temperature and pressure

D. High hardness and impact resistance

E. Good corrosion resistance

Hardbanding of API 5DP NC40 4″/3 1/2″ E75 / X95 / G105 /S135 oilfield drill pipe Feature:

A. Good balance between antiwear and friction-reduction

B. The wear rate is less than 6% of that of bare tool joint, which can prolong 3 times of the

    tool joint service life

C. Good property of friction-reduction, which can reduce the casing wear to the least, and its

    wear to casing is less than 11% of that of bare tool joint

D. Reduce the torque of drilling string

E. Good weldablity with little splash and good rewelding preformance

F. Friendly to environment

Our Services

1. The drill pipes will be packed into bundles as 3×3, 3×4, 4×4 etc. loading into containers

after black painting and thread protectors installation.

2. For 40’ container, the max loading weight is 24 metric tons.

3. Usual loading port is Qingdao port.

Packaging & Shipping

1. Drill pipe strictly according to API standard, it’s high quality drill pipe.

2. If you found to quality problems within one month of the package returned.

3. 24 hours online customer service,feel free contact us

We also produce oil well control system such as BOP and drilling pipes, contact us for more details.

Detail Mechanical Property of the Drill Pipe:


GroupGradeYield StrengthTensile Strength

Perfect Quality Control System laboratory

Physical Lab:

Chemical Lab:

Wellhead Equipment Testing Lab:

Precision Measurement Lab:


X-ray flaw detection:

X-ray flaw detection equipment carry out the testing on the welding seam to guarantee the welding effect and insulating capability.

Heat conductivity coefficient test:



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