HDD Drill Pipe (Integral Type)

Material use OCTG, reliable performance;
Using a unique tool joints twice thicker molding technology;
Transition band is smooth , which can reduce resistance through the mud;
Thread of joints liquid nitrogen treatment, surface hardness higher, thereby pipe life is longer.

Specification of Forged Drill Pipe for Vermeer HDD Machine


Connection Dimension of Drilling Pipe Tempering and Quenching Min Bending Radius Max Torque
Model of Rig OD of Tube Wall Thickness OD of Joints /upset Working Length Weight

(mm) (mm) (mm) (mm) ( kg) Grade (m) Nm
D7×11, D9×13 Firestick 1 42 6.5 48 1829 12 S135 29 2000
D10×14, D10×15 Firestick 1 42 6.5 48 3048 20 S135 29 2000
D16×20, D18×22 Firestick 1 48 6.5 54 3048 23.5 S135 30 3000
D24×26 Firestick 1 54 7 57 3048 25 S135 31 4000
D24×40 Firestick 1 60.3 7.5 66.7 3048 35 S135 33 6300
D40×40 Firestick 1 60.3 7.5 66.7 4572 50 S135 33 6300
D33×44, D36×50 Firestick 1 or 2 60.3 7.5 70 3048 36 S135 33 6772
D33×44, D36×50 Firestick 1 or 2 60.3 7.5 70 4572 51 S135 33 6772
D36×50 Firestick 1 60.3 7.5 70 3048 36 S135 33 6772
D36×50 Firestick 1 60.3 7.5 70 4572 51 S135 33 6772
D36×50 Firestick 1 66.7 8 78 3048 40 S135 40 9000
D36×50 Firestick 1 66.7 8 78 4572 55 S135 40 9000
D50×100,Uni60×70 Firestick 1 73 10 83 3048 55 S135 51 16000
D50×100 Firestick 1 73 10 83 4572 78 S135 51 16000
D50×100, D80×100 Firestick 1 89 10 92 4572 96 S135 72 18000
D100×120 Firestick 2 89 10 104 6096 130 S135 72 24000
D100×120 Firestick 1 89 11.5 111.5 6096 150 S135 80 27000

Specification of Forged Drill Pipe for Ditch Witch HDD Machine

Model of Rig Connection Dimension of Drilling Pipe Tempering and Quenching Min Bending Radius Max Torque
OD of Tube Wall Thickness OD of Joints /upset Working Length Weight
(mm) (mm) (mm) (m) ( kg) Grade (m) Nm
JT820/920 DW 42 6.5 50.8 2 13 S135 26 2000
JT920L DW 42 6.5 50.8 3 21 S135 26 2000
JT1720 /1720M1 DW 52 6.5 63 3 25 S135 30 3200
JT2020M1 DW 60 7.5 66.7 3 35 S135 33 6300
JT2720 DW 60 7.5 70 3 36 S135 33 6772
JT2720M1/3020M1 DW 68 8 76 3 40 S135 33 7000
JT4020 DW 73 10 82.5 4.5 51 S135 51 16000
JT4020M1 DW 83 9 89 4.5 84 S135 65 18000
JT7020 /8020 DW 89 10 101.6 4.5 100 S135 72 24000

Specification of Forged Drill Pipe for Case HDD Machine

Model of Rig Connection Dimension of Drilling Pipe Tempering and Quenching Min Bending Radius Max Torque
OD of Tube Wall Thickness OD of Joints Working Length Weight


(mm) (mm) (mm) (m) ( kg) Grade (m) Nm
Case 6030 Case 60.3 7.5 66.7 3.048 35 S135 33 6300


Dimension of Drlling Pipe
Thread Steel Min bending Radius The length of drill bent at 90° Max bending angle Max percentage of drill pipe Torque
Size Small clamp space of pin/box joints Grade

OD of Tube Wall Thickness Working Weight OD of


length Joints


(mm) (mm) (m) (kg) (mm) (mm)

(m) (m)
(%) (KN.m)
50(2″) 50 6.5 2 20 57 Pin:110 DH50 G 38 60 3.0″4.8″ 5.2 2.9
2.5 25 Box:175 S 30 47.1 8.3 3
60.3(2 3/8″) 60.3 7.5 2 25.3 67 Pin:130 DH60 G 42 66 2.7″5.2″ 4.8 6
3 37 Box:180 S 33 51.8 9.1 6.3
73(2 7/8″) 73 8 3 45 80 Pin:120 DH23 G 58 91.1 3.0″3.8″ 5.2 12
4 58 Box:180 S 45 70.7 5 13
73(2 7/8″) 73 10 3 58 87 Pin:120 DH26 G 67 105 2.6″4.5″ 4.5 14.5
4 78 Box:180 S 51 80 7.8 16
83(3 1/4″) 83 9 3 59 92 Pin:130 WM80 G 73 114.7 2.4″4.0″ 4.1 16.818
4.5 84 Box:190 S 65 102.1 6.9
89 (3 1/2″) 88.9 10 4.5 102 104 Pin:150 DH31 G 80 125.7 3.2″4.8″ 5.6 22.324
6 130 Box:230 S 72 113 8.3


Yield stength Tensile stength Elongation rate Impact work
Steel Min Max Min Min 10×10
Grade Psi Mpa Psi Mpa Psi Mpa % (-20℃)
iG105 105,000 724 135,000 931 115,000 793 15 ≥68
S135 135,000 931 165,000 1138 145,000 1000 13 ≥54

HDD Drill Pipe

HDD Friction Welding Drill Pipe

Material use OCTG, Pipe end upsetting meet API standard; Thicker tube body quenching and heat treatment, Steel Grade up to G105 or S135;
Welding area using thermo mechanical treatment, welding performance conform to API SPEC 7 Standard.

Tube Joint
Size Weight Steel Upsetting O.D Wall thickness of pipe Thread OD of joints ID of joints Diameter of angling Big clamp space of pin joints Big clamp space of box joints OD of welding Bearing torque comparison
Grade (mm) d(mm) d(mm) LPB(mm) LPB(mm) joint DTE/DPE






(mm)
3 1/2 13.3 R EU 88.9 9.35(11.4) NC31 104.8 50.8 100.41 177.8 228.6 80.96 0.98
G 104.8 50.8 100.41 177.8 228.6 80.96 0.87
S 104.8 41.28 100.41 177.8 228.6 80.96 0.86
4 14 R EU 101.6 8.38(9.19) NC38 127 65.09 116.28 203.2 266.7 98.43 0.97
G 127 61.91 116.28 203.2 266.7 98.43 0.83
S 127 53.98 116.28 203.2 266.7 98.43 0.9
4 1/2 16.6 E IEU 114.3 8.56 NC46 158.8 82.55 145.26 177.8 254 119.06 1.09
X 158.8 72.6 145.26 177.8 254 119.06 1.01
G 158.8 76.2 145.26 177.8 254 119.06 0.91
S 158.8 69.85 145.26 177.8 254 119.06 0.81
20 E 10.92 158.75 76.2 145.3 177.8 254 119.07 1.07
X 158.75 69.85 145.3 177.8 254 119.07 0.96
G 158.75 63.5 145.3 177.8 254 119.07 0.93
S 158.75 57.15 145.3 177.8 254 119.07 0.81

Tube Joint
Size Weight Steel Upsetting O.D Wall Thread OD of ID of Dimeter of angling Big clamp space Big clamp space OD of welding Bearing torque comparison
Grade (mm) thickness joint joint DF(MM) of the pin joint of the box joint joint DTE/DPE


(mm) d(mm) d(mm)
LPB(mm) LPB(mm) (mm)
4 1/2 16.6 E EU 114.3 8.56 NC50 168.28 95.25 154 177.8 254 127 1.23
X 168.28 95.25 154 177.8 254 127 0.97
G 168.28 95.25 154 177.8 254 127 0.88
S 168.28 88.9 154 177.8 254 127 0.81
20 E 10.92 168.28 92.08 154 177.8 254 127 1.07
X 168.28 88.9 154 177.8 254 127 0.96
G 168.28 88.9 154 177.8 254 127 0.96
S 168.28 76.2 154 177.8 254 127 0.81
5 19.5 E IEU 127 9.19 168.28 95.25 154 177.8 254 130.18 1.23
X 168.28 88.9 154 177.8 254 130.18 0.97
G 168.28 82.5 154 177.8 254 130.18 0.88
S 168.28 69.85 154 177.8 254 130.18 0.81
25.6 E 12.7 168.28 88.9 154 177.8 254 130.18 1.02
X 168.28 76.2 154 177.8 254 130.18 0.96
G 168.28 69.85 154 177.8 254 130.18 0.86
S 168.28 69.85 154 177.8 254 130.18 0.87
19.5 E 9.19 5 1/2FH 177.8 95.25 170.7 203.2 254 130.18 1.53
X 177.8 95.25 170.7 203.2 254 130.18 1.21
G 177.8 95.25 170.7 203.2 254 130.18 1.09
S 184.15 88.9 170.7 203.2 254 130.18 0.98
25.6 E IEU 12.7 177.8 88.9 170.7 203.2 254 130.18 1.21
X 177.8 88.9 170.7 203.2 254 130.18 0.95
G 184.15 88.9 170.7 203.2 254 130.18 0.99
S 184.15 82.55 170.7 203.2 254 130.18 0.83
5 1/2 21.9 E 139.7 9.17 177.8 101.6 170.7 203.2 254 144.46 1.11
X 177.8 95.25 170.7 203.2 254 144.46 0.98
G 184.15 88.9 170.7 203.2 254 144.46 1.02
S 190.5 76.2 180.2 203.2 254 144.46 0.96
24.7 E 10.54 177.8 101.6 170.7 203.2 254 144.46 0.99
X 184.15 88.9 170.7 203.2 254 144.46 1.01
G 184.15 88.9 170.7 203.2 254 144.46 0.92
S 190.5 76.2 180.2 203.2 254 144.46 0.86
6 5/8 25.2 E 168.3 8.38 6 5/8 FH 203.2 127 195.7 203.2 279.4 176.21 1.04
X 203.2 127 195.7 203.2 279.4 176.21 0.82
G 209.55 120.65 195.7 203.2 279.4 176.21 0.87
S 215.9 107.95 195.7 203.2 279.4 176.21 0.86
27.7 E 9.19 203.2 127 195.7 203.2 279.4 176.21 0.96
X 209.55 120.65 195.7 203.2 279.4 176.21 0.89
G 209.55 120.65 195.7 203.2 279.4 176.21 0.81
S 215.9 107.95 195.7 203.2 279.4 176.21 0.8

> Winged Reamer (Φ200—Φ1800)
Suitable for hard soil strata and strong-mantle rock formations.
Connection with drill rod: direct connection with drill rod; octagonal connection
Connection with pipeline: with and without swivel

> Sub actuator
(15T,20T,40T,60T,80T,100T,200T,300T,400T,500T,600T,700T,800T)
By using the latest optimization design, greatly improving the
service life of the actuator, and minimizing the risk of the construction.

> Slider & Shackle
Slider using alloy steel and heat treatment,
the shackle using bow cross pin with nut for high safety.

> Oriented Drill
Oriented drill (2 3/8 ~ 6 5/8FH)
Connection: Direct connection with drill pipe, octagonal connection, side-opening
Signal bar handling mode: rear-mounted, side-mounted

> Cutting Blade
The user can choose different cutting blades according to different
geological conditions to improve cutting efficiency of the reamer.

> Drill Collar
Using heat-treated high quality alloy
steel, high strength and durability.

> Reamer
Ripper Reamer (Φ200—Φ1800)
Suitable for soft soil strata.
Connection with drill rod : direct connection
with drill rod; octagonal connection;
Connection with pipeline: with and without swivel.

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