Drill Pipe
  • API drilling pipe supplier in China

API Drill pipe

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  • Description
  • API Drill Pipe Size
  • Main Technical Parameters
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API Drill pipe is made from alloy steel. Acc.to API Spec.5DP. All threads are phosphated, copperized or cold worked. All connections are equipped with pressed steel thread protectors. All threads are machined with CNC Lathes-Double-shouldered and special threads.

oil tools drill pipe manufacture

Packing details of oil well drilling pipe:

1. by bundles, each bundle weight under 3 tons, for small outer diameter seamless steel pipe, each bundle with 4 – 8 steel strips.
2. after making by bundle, covered with Polyethylene waterproof cloth.
3. make black paints painting on each pipe, then make bundles.

Drilling pipe Application:

Drilling pipe is hollow, thick-walled piping that transmits drilling fluid and torque through the wellbore to the drill bit on a drilling rig. It is manufactured to withstand severe internal and external pressure, distortion, bending, and vibration as it both rotates and lifts the bottom hole assembly (BHA). Drill pipe is threaded on each end in a section of pipe referred to as the tool joint. It is manufactured, sampled, tested, and inspected in accordance with standard specifications such as the American Petroleum Institute (API).

drilling pipe supplier China

API Drill Pipe Grade
Minimum Yield Strength (psi)
Minimum Tensile Strength (psi)
E-75
75,000
100,000
X-95
95,000
105,000
G-105
105,000
115,000
S-135
135,000
145,000
API 5DP standard drill pipe

Main Features of Drilling Pipe API 5DP:

1)Steel grades: E75 X95 G105 S135

2) Hot rolled Outer diameter: 2 3/8~6 5/8″

3)Wall thickness: 7.11mm to 12.7mm

4)Tool joint: NC26 NC31 NC38 NC40 NC46 NC50 5 1/2FH

5)Upset Type :EU, IU, IEU

6)Hard banding type: Arnco 100XT, Arnco 200XT, Arnco 300XT, TCS 8000, BOTN 3000, BOTN 1000

7)Internal coating type:TC 2000, TK34, TK34P, TK34XT, DPC

Other oil well tools please check: non-magnetic heavy weight drill pipe

◆API Drill Pipe Size

Size
（inch）		 Weight
Designation
（PPF）		 Calculated
Weight		 Wall
Thickness		 Grade Upset Ends Tools Joint
Designation
lb/ft kg/m in mm
2 3/8 6.65 6.27 9.33 0.280 7.11 E、X、G、S EU NC26
2 7/8 10.40 9.72 14.47 0.362 9.19 E、X、G、S EU、IU NC31
3 1/2 9.50 8.81 13.12 0.254 6.45 E、X、G、S EU、IU NC38
3 1/2 13.30 12.32 18.34 0.368 9.35 E、X、G、S EU、IU NC38、
NC40
3 1/2 15.50 14.64 21.79 0.449 11.4 E、X、G、S EU、IEU NC38、
NC40
4 14.00 12.95 19.27 0.330 8.38 E、X、G、S EU、IU NC40
4 1/2 13.75 12.25 18.23 0.271 6.88 E、X、G、S EU、IU NC46
4 1/2 16.60 15.00 22.32 0.337 8.56 E、X、G、S EU、IU NC46
4 1/2 20.00 18.71 27.84 0.430 10.92 E、X、G、S EU、IU NC46
5 16.25 14.88 22.16 0.296 7.52 E、X、G、S IU NC50
5 19.50 17.95 26.70 0.362 9.19 E、X、G、S IEU NC50
5 25.60 24.05 35.80 0.500 12.7 E、X、G、S IEU NC50
5 1/2 21.90 19.83 29.52 0.361 9.17 E、X、G、S IEU 5 1/2FH
5 1/2 24.70 22.56 33.57 0.415 10.54 E、X、G、S IEU 5 1/2FH
6 5/8 25.20 22.21 33.04 0.330 8.38 E、X、G、S IEU 5 1/2FH
6 5/8 27.72 24.24 36.06 0.362 9.19 E、X、G、S IEU 5 1/2FH

 

API Drill Pipe Specifications:

◆ Mechanical Properties

Steel Grade Yield Strength Tensile strength Elongation Impact AKV(J)
Min Max Min MIN 10*10
psi Mpa psi Mpa psi Mpa % (-20℃)
E75 75000 517 105000 724 100000 689 API 5DP ≥95
X97 95000 655 125000 862 105000 724 ≥81
G105 105000 724 135000 931 115000 793 ≥68
S135 135000 931 165000 1138 145000 1000 ≥54

◆ Mechanical Properties for welding zone

Steel Grade Min.Yield Strength
σt  Mpa		 Min.Tensile
Strength σb Mpa		 Min.Elongation % Min Impact AKV(J)
E75 517 689 13 ≥30 10*10 20℃
X97 609 712
G105 655 724
S135 724 793

 

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