Drill pipe threads

Are you interested in drill pipe threads? Supplier Evek GmbH offers to buy threaded drill pipe of domestic and foreign production at an affordable price in a wide range. We provide delivery of products anywhere in the continent. The price is optimum.

Main parameters

Parameters of threaded pipes and welded ends Parameters for pipes (welded ends)
43 55 70 89 114
Outer diameter of male thread in the main plane dH 38,800 50,962 65,938 84,750 109,534
Inner diameter of the male thread in the main planedB 37,300 49,162 64,138 82,350 107,134
Outer diameter of the inner thread in the main plane Dn 38,800 50,962 65,938 84,750 109,534
Inner diameter of the inner thread in the main plane Db 37,400 49,262 64,238 82,450 107,234
Outer diameter of the outer thread in the face plane d1 38,100 50,000 65,000 83,550 108,300
Inside diameter of the internal thread in the face plane D1 37,637 49,550 64,550 82,750 107,550
Distance between the thrust conical surfaces of the outer thread l 31,183 40,922 40,922 48,759 48,759
Distance between the thrust surfaces of the internal thread L 31,283 41,022 . 41,022 48,859 48,859
Length of thread with full profile l1(L1) at least 28 38 38 46 46
Distance from the inner corner of the outer ledge to the main plane of the outer thread l2 12,0 12,0 12,0 11,5 11,0
Distance from the end of the pipe to the main plane L2 10,0 10,0 10,0 10,0 10,0
Thread pitch P 6,0 8,0 8,0 8,0 8,0
Height of the male thread tH 0,75 0,90 0,90 1,20 1,20
Height of the inner thread tb 0,70 0,85 0,85 1,15 1,15
Width of the male thread trough m 2,9 3,9 3,9 3,9 3,9
Width of the apex of the male thread profile n 2,698 3,618 3,618 3,456 3,456
Inner thread trough width M 2,9 3,9 3,9 3,9 3,9
Width of the tip of the inner thread profile N 2,725 3,645 3,645 3,483 3,483

Tolerances

The straightness tolerance of the drill pipe in any 1 m section should be:

  • 0.4 mm - for 43 mm diameter pipe;
  • 0.5 mm for 55 mm O.D. pipe;
  • 0.7 mm - for pipes with a diameter of 70 mm;
  • 0.8 mm for pipes with a diameter of 89 mm.

Supplier Evek GmbH offers to buy in assortment drill pipe of domestic and foreign production at an affordable price in a wide range. Provide product delivery anywhere in the continent. The price is optimal.

Connecting locks

Parameters and technical requirements to drill pipe couplings are regulated by GOST 5286-75.

The tool joints for drill pipes shall be manufactured of the types given in the Table.

The tool joints shall be manufactured in two designs:

right - with right locking threads and with right threads to connect the lock to the drill pipes;

left-handed - with left-handed lock thread and left-handed thread for connecting the lock to the drill pipe.

Type designation Name Area of application
ZN Lock with normal bore For connecting pipes with the ends planted inside
ZSH Latch with wide bore For connecting pipes with inward and outward thrust ends
ZU Latch with enlarged bore
ZSHK Latch with a wide bore with tapered bore For connecting inwardly extruded pipes with conical stabilizing ribs
ZUK Latch with increased bore and tapered bore For connecting pipes with internally or externally flared ends and tapered stabilizing ribs

Thread sizes are shown below:

Dimensions in mm

Profile elements of the thread Profile dimensions
I II III IV
Number of threads on a length of 25.4 mm
5 4
Thread pitch P 5,080 6,350
Thread taper 2 tg j 1:4 1:6
Height of acute angle profile H 4,376 5,471 5,487
Thread profile height h 1 2,993 3,742 3,755 3,095
Working height of profile h 2,626 3,283 3,293 2,634
Height of cut apex l 0,875 1,094 1,097 1,42.7
Trough truncation, f 0,508 0,635 0,965
Site a* 1,016 1,270 1,651

Radius of curvature of the trough r*

0,508 0,635 0.965
Mating radius r ', not more 0,38
Angle of slope j 7°730″ 4°4548″

* Dimensions are given for the design of thread-forming tools.

Note. Thread pitch P is measured parallel to the axis of the lock thread.

Buy. Supplier, price.

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