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HEAVY WEIGHT DRILL PIPE
HEAVY WEIGHT DRILL PIPE

HEAVY WEIGHT DRILL PIPE

Integral heavy weight drill pipe is the transition zone between drill collar and drill pipe. It can not only reduce stress-formation in the connection of drill collar and drill pipe, but also reduce the wear on OD.
Standard:API 5DP, API SPEC 7-1
Grade:API 5DP Grade DZ50, E75, R780, X95, G105, S135
Product introduction
Technical data
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Product introduction
Standard:API 5DP, API SPEC 7-1
Grade:API 5DP Grade DZ50, E75, R780, X95, G105, S135
Sizes:2 3/8”, 2 7/8”, 3 1/2” 4”, 4 1/2”, 5”, 5 1/2” up to 6 5/8” OD Range in mm: 60.3mm, 73mm, 88.9mm, 101.6mm, 114.3mm, 127mm, 139.7mm Range of Thickness: 6.5mm to 12.7mm, or cutomized
Connection threads:NC26, NC31, NC38, NC40, NC46, NC50, 5 1/2FH.6 5/8FH.
Internal Upset:IU, EU, IEU
Length:R1, R2, R3
Connection:API Regular, PAC, H90
Description
Integral heavy weight drill pipe is the transition zone between drill collar and drill pipe. It can not only reduce stress-formation in the connection of drill collar and drill pipe, but also reduce the wear on OD.

Integral heavy weight drill pipe is made from one piece of AISI 4145H solid bar, fully heat treated, all physical properties conform to API spec7 latest edition.

HWDP’s wear resistance hard banding is standard on tool joints connections and central upset. The types of hard banding include Arnco 100XT and100XT. All threads are phosphated, copperized or cold worked. All connections are equipped with pressed steel thread protectors. All theads are machined with CNC lathes –Double-shoudered and special threads.
Technical data
Technical specifications and parameters
Size(in) O.D. (in) I.D. (in) Tool Joint O.D. (in) Tool Joint I.D. (in) Connection Max.elevator diameter (in) Central upset dia. (in) Min.drift dia.size(in)
3 1/2 3 1/2 2 1/4 4 3/4
(4 7/8, 5)
2 1/4 NC38 3 7/8 4 2
2 1/16 2 1/16 1 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 7/16
2 3/4 2 3/4 2 1/2
2 13/16 2 13/16 2 9/16
5 5 3 6 5/8 3 NC50 5 1/8 5 1/2 2 3/4
5 1/2 5 1/2 3 1/4 7
(7 1/4, 7 1/2)
3 1/4 5 1/2 FH 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
(8 1/4, 8 1/2)
4 6 5/8 FH 6 15/16 7 1/8 3 3/4
4 1/2 4 1/2 4 1/4
5 5 4 3/4
 
Spiral heavy weight drill pipe
Specification  mm Tube Joint
ID mm Elevator upsetmm elevator groove
/Slip outside diametermm
Screw in diametermm Spiral groove depthmm Thread Type OD mm ID mm
88.9(3 1/2) 54 92.1 88.9 101.6 9.5 NC38 120.6 54
114.3(4 1/2) 69.8 117.5 114.3 127 12.7 NC46 158.8 69.8
127.0(5) 76.2 130.2 127 139.7 12.7 NC50 165.1 76.2

Materials
Steel Mark Chemical Composition%
C Si Mn P S Cr Mo Cu Al
4145H 0.42~0.48 0.15~0.35 0.90~1.20 ≤0.03 ≤0.03 0.90~1.20 0.15~0.25 ≤0.2 0.025~0.045
Other Elements:N≤0.015,Ni≤0.5
 
Application Material Size Yield Strength (Min KSI) Ultimate Strength (Min KSI) Hardness Brinell (HB) Elongation (A%) Min CHarpy (ft-lbs @+20°C)
Integral Standard
& NS-1
AISI 4145H Modified All 110 140 285 to 340 13 40
Welded Standard
(central part)
AISI 1340 Modified All 65 95 235 (max) 18 30
Welded NS-1
(central part)
AISI 4140H Modified All 120 140 285 to 340 13 40
Welded Standard
& NS-1 (tool joint)
AISI 4140H Modified Above 7 1/4” 120 140 285 to 340 13 40
Standard welded
& NS-1 (tool joint)
AISI 4140H Modified Up to 7 1/4” 100 135 285 to 340 13 40
HWDP-110 HW MS ASCOWELL C Above 6 3/4” 110 140 285 to 340 13 0
HWDP-110 HW MS ASCOWELL C Up to 6 3/4” 100 135 285 to 340 13 55
HWDP-65 HW MS (tool joint) ASCOWELL C Above 6 3/4” 110 140 285 to 340 13 55
HWDP-65 HW MS (tool joint) ASCOWELL C Up to 6 3/4” 100 135 285 to 340 13 55
HWDP-65 HW MS
(central part)
AISI 1340 Modified All 65 95 235 (max) 18 30
Standards












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