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drill pipe

Drill pipe is the essential tools of the well drilling, is thin-walled, usually steel piping which is used on drilling wells. Strictly, drill pipe is a part of the drill string; it connects the bottom of drill stem, with the deepening of the drilling well, the drill pipe constantly extended the drill string.
Our mill produces drill pipe in diameters of 2-3/8" to 5-1/2."  Annual capacity is 30 thousand metric tons.  Our production and testing facilities meet the highest international standards.  Anson understand customer demands for consistent, reliable quality, with API 5D approved by American Petroleum Institute.

Superior drill pipe Drill pipe
Produced drill pipe Drill pipes thread
Schematic diagram of drill pipe Drill pipe connector

Anson promises to provide all customers qualified products, and we shall achieve this goal by meeting defined standards, offering best quality and reliability by being efficient, timely and competitive supplier at the same time, adhere to the requirements of API and ISO.
The achievement of these commitments and adherence to the policy is the responsibility of management and workers at all levels through involvement and dedication, ensuring achievement and compliance.

 Mechanical Character of pipes

  Yield Strength Tensile Strength Minimum Elongation (%)
Minimum Maximum Minimum
Grades Psi Mpa Psi Mpa Psi Mpa 2i * (50.8mm)
E-75 75.000 517 105.000 724 100.000 689 See API spec 5D
X-95 95.000 655 125.000 862 105.000 724
G-105 105.000 724 135.000 931 115.000 793  
S-135 135.000 931 165.000 1138 145.000 1000  

Mechanical Character of joints
Minimum Yield Strength Minimum Tensile Strength  Minimum Elongation (%)
Psi Mpa Psi Mpa  
120.000 827.4 140.000 965.3 13

Pipe Tool Joint
Size OD
(In.)
Nominal Weight
(lb/ft)
Upset Type  Grade Wall Thickness
(In.)
 ID
(In.)
Connection Type  OD
(In.)
 ID
(In.)
Pin Tong Space
(In.)
Box Tong Space
(In.)
2-3/8 6.65 EU E-75 0.280 1.815 NC26 3-3/8 1-3/4 9 10
X-95 0.280 1.815 NC26 3-3/8 1-3/4 9 10
G-105 0.280 1.815 NC26 3-3/8 1-3/4 9 10
S-135 0.280 1.815 NC26 3-5/8 1-3/4 9 10
2-7/8 10.40 EU E-75 0.362 2.151 NC31 4-1/8 2-1/8 9 11
X-95 0.362 2.151 NC31 4-1/8 2 9 11
G-105 0.362 2.151 NC31 4-1/8 2 9 11
S-135 0.362 2.151 NC31 4-3/8 1-5/8 9 11
3-1/2 13.30 EU E-75 0.368 2.764 NC38 4-3/4 2-11/16 10 12-1/2
X-95 0.368 2.764 NC38 5 2-9/16 10 12-1/2
G-105 0.368 2.764 NC38 5 2-7/16 10 12-1/2
S-135 0.368 2.764 NC38 5 2-1/8 10 12-1/2
15.50 EU E-75 0.449 2.602 NC38 5 2-9/16 10 12-1/2
X-95 0.449 2.602 NC38 5 2-7/16 10 12-1/2
G-105 0.449 2.602 NC38 5 2-1/8 10 12-1/2
S-135 0.449 2.602 NC40 5-1/2 2-1/4 9 12
4 14.00 IU E-75 0.330 3.340 NC40 5-1/4 2-13/16 9 12
X-95 0.330 3.340 NC40 5-1/4 2-11/16 9 12
G-105 0.330 3.340 NC40 5-1/2 2-7/16 9 12
S-135 0.330 3.340 NC40 5-1/2 2-7/16 9 12
EU E-75 0.330 3.340 NC46 6 3-1/4 9 12
X-95 0.330 3.340 NC46 6 3-1/4 9 12
G-105 0.330 3.340 NC46 6 3-1/4 9 12
S-135 0.330 3.340 NC46 6 3 9 12
15.70 IU E-75 0.380 3.240 NC40 5-1/4 2-11/16 9 12
X-95 0.380 3.240 NC40 5-1/4 2-7/16 9 12
G-105 0.380 3.240 NC40 5-1/2 2-7/16 9 12
S-135 0.380 3.240 NC40 5-1/2 2 9 12
EU E-75 0.380 3.240 NC46 6 3-1/4 9 12
X-95 0.380 3.240 NC46 6 3-1/4 9 12
G-105 0.380 3.240 NC46 6 3-1/4 9 12
S-135 0.380 3.240 NC46 6 3 9 12
4-1/2 16.60 IEU E-75 0.337 3.826 NC46 6-1/4 3 9 12
X-95 0.337 3.826 NC46 6-1/4 3-1/4 9 12
G-105 0.337 3.826 NC46 6-1/4 3 9 12
S-135 0.337 3.826 NC46 6-1/4 2-3/4 9 12
EU E-75 0.337 3.826 NC50 6-5/8 3-3/4 9 12
X-95 0.337 3.826 NC50 6-5/8 3-3/4 9 12
G-105 0.337 3.826 NC50 6-5/8 3-3/4 9 12
S-135 0.337 3.826 NC50 6-5/8 3-1/2 9 12
20.00 IEU E-75 0.430 3.640 NC46 6-1/4 3 9 12
X-95 0.430 3.640 NC46 6-1/4 2-3/4 9 12
G-105 0.430 3.640 NC46 6-1/4 2-1/2 9 12
S-135 0.430 3.640 NC46 6-1/4 2-1/4 9 12
EU E-75 0.430 3.640 NC50 6-5/8 3-5/8 9 12
X-95 0.430 3.640 NC50 6-5/8 3-1/2 9 12
G-105 0.430 3.640 NC50 6-5/8 3-1/2 9 12
S-135 0.430 3.640 NC50 6-5/8 3 9 12
5 19.50 IEU E-75 0.362 4.276 NC50 6-5/8 3-3/4 9 12
X-95 0.362 4.276 NC50 6-5/8 3-1/2 9 12
G-105 0.362 4.276 NC50 6-5/8 3-1/4 9 12
S-135 0.362 4.276 NC50 6-5/8 2-3/4 9 12
E-75 0.362 4.276 5-1/2 FH 7 3-3/4 10 12
X-95 0.362 4.276 5-1/2 FH 7 3-3/4 10 12
G-105 0.362 4.276 5-1/2 FH 7 3-3/4 10 12
S-135 0.362 4.276 5-1/2 FH 7-1/4 3-1/2 10 12
25.60 IEU E-75 0.500 4.000 NC50 6-5/8 3-1/2 9 12
X-95 0.500 4.000 NC50 6-5/8 3 9 12
G-105 0.500 4.000 NC50 6-5/8 2-3/4 9 12
S-135 0.500 4.000 NC50 6-5/8 2-3/4 9 12
E-75 0.500 4.000 5-1/2 FH 7 3-1/2 10 12
X-95 0.500 4.000 5-1/2 FH 7 3-1/2 10 12
G-105 0.500 4.000 5-1/2 FH 7-1/4 3-1/2 10 12
S-135 0.500 4.000 5-1/2 FH 7-1/4 3-1/4 10 12
5-1/2 21.90 IEU E-75 0.361 4.778 5-1/2 FH 7 4 10 12
X-95 0.361 4.778 5-1/2 FH 7 3-3/4 10 12
G-105 0.361 4.778 5-1/2 FH 7-1/4 3-1/2 10 12
S-135 0.361 4.778 5-1/2 FH 7-1/2 3 10 12
24.70 IEU E-75 0.415 4.670 5-1/2 FH 7 4 10 12
X-95 0.415 4.670 5-1/2 FH 7-1/4 3-1/2 10 12
G-105 0.415 4.670 5-1/2 FH 7-1/4 3-1/2 10 12
S-135 0.415 4.670 5-1/2 FH 7-1/2 3 10 12
6-5/8 25.20 IEU E-75 0.330 5.965 6-5/8 FH 8 5 10 13
X-95 0.330 5.965 6-5/8 FH 8 5 10 13
G-105 0.330 5.965 6-5/8 FH 8-1/4 4-3/4 10 13
S-135 0.330 5.965 6-5/8 FH 8-1/2 4-1/4 10 13
27.70 IEU E-75 0.362 5.901 6-5/8 FH 8 5 10 13
X-95 0.362 5.901 6-5/8 FH 8-1/4 4-3/4 10 13
G-105 0.362 5.901 6-5/8 FH 8-1/4 4-3/4 10 13
S-135 0.362 5.901 6-5/8 FH 8-1/2 4-1/4 10 13

Production process of drill pipe

Production process of drill pipe
1. 35CrMo Round bar NDT
2. Rolling pipes and cutting
3. Thicken the upset
4. Heat treatment
5. NDT
6. Upset machining, welding joint
7. Polishing and weld process
8. Coating and painting
9. Packing

Because of the characteristics of drill pipes, it is expensive, so owners all expect to reuse them after finishing a well. So a used drill pipes must be inspected on site or off location. And new produced drill pipes are usually classed as new class, after using become to premium class and finally down to c class with the worn of the outside diameter.  So every time our mill has the best way to ensure the product quality.

S135 drill pipe produced Productive process of drill pipes
Heavy weight drill pipe machines Heating of superior drill pipe
High quality drill pipe Weld of oil drill pipe
painting and drying of oil drill pipe Inspect weld of oil drill pipes
Measurement of drill pipe grade Packing of drill pipes

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