Threading of drill pipes
Buy in stock drill pipe, with threads on the end elements, the company offers Electrocentury-steel. Are economically advantageous prices from manufacturers. Supplier guaranteed timely delivery of metal to any address set by the user.
The dimensions of the threaded areas of drill pipe
In the following table:
|The parameters of the thread pipe and welded ends||The parameter values for pipes (welded ends)|
|The outer diameter of the external thread in the main plane dH||38,800||50,962||65,938||84,750||109,534|
|The inner diameter of the external thread in the main plane dB||37,300||49,162||64,138||82,350||107,134|
|The outer diameter of the internal thread in the main plane Dn||38,800||50,962||65,938||84,750||109,534|
|Internal diameter of the internal thread in the main plane Db||37,400||49,262||64,238||82,450||107,234|
|The outer diameter of the external thread in the plane of the end face d1||38,100||50,000||65,000||83,550||108,300|
|Internal diameter of the internal thread in the plane of the end face D1||37,637||49,550||64,550||82,750||107,550|
|The distance between the thrust surfaces of the tapered external thread l||31,183||40,922||40,922||48,759||48,759|
|The distance between the thrust surfaces of the inner thread L||31,283||41,022 .||41,022||48,859||48,859|
|Length of thread with a full profile of l1 (L1) not less than||28||38||38||46||46|
|Distance from inner corner of the outer ledge to the main plane of the external thread l2||12,0||12,0||12,0||11,5||11,0|
|Distance from the pipe end to the main plane L2||10,0||10,0||10,0||10,0||10,0|
|The thread pitch R||6,0||8,0||8,0||8,0||8,0|
|The height of the spiral external thread tH||0,75||0,90||0,90||1,20||1,20|
|Height round internal thread tb||0,70||0,85||0,85||1,15||1,15|
|The width of trench of outer thread m||2,9||3,9||3,9||3,9||3,9|
|The width of the top profile of the external thread n||2,698||3,618||3,618||3,456||3,456|
|The width of the trench inner thread M||2,9||3,9||3,9||3,9||3,9|
|The width of the top profile of the internal thread N||2,725||3,645||3,645||3,483||3,483|
The tolerance of straightness of the drill pipe at any section of 1 m length should be:
0.4 mm — for pipes with a diameter of 43 mm;
0.5 mm — for pipes with diameter 55 mm;
0.7 mm — for pipes with a diameter of 70 mm;
0.8 mm — for pipes with a diameter of 89 mm.
The company Electrocentury-steel implements at reasonable prices from the manufacturer of various diameters and lengths of drill pipes. Supplier guaranteed timely delivery of products anywhere in the application installed by the customer.
Parameters and technical requirements for connecting the valve to the drill pipes is regulated GOST 5286−75.
Locks for drill pipes must be manufactured of the types specified in the table.
Locks shall be manufactured in two versions:
right — with the right tool-joint thread and with right-hand thread for connection with drill pipes;
left — the left tool-joint thread and with left-hand thread for connection with drill pipes.
|ZN||Lock with a normal feedthrough||For connection of pipes with upset ends|
|ZS||Castle with a wide feedthrough||To connect pipes with upset inward and outward ends|
|Memory||Lock with increased feedthrough|
|SSC||Castle with a wide feedthrough with a conical bore||For connection of pipes with upset ends with conical stabilizing belts|
|Zook||Lock with increased feedthrough with a conical bore||To connect pipes with upset inward and outward ends with conical stabilizing belts|
Thread sizes are shown below:
Dimensions in mm
|The elements of the thread profile||The size of the profile|
|The number of threads on the length of 25.4 mm|
|The thread pitch R||5,080||6,350|
|Taper thread 2 tg j||1:4||1:6|
|The height of the notched profile N||4,376||5,471||5,487|
|Height of thread h 1||2,993||3,742||3,755||3,095|
|Working height profile h||2,626||3,283||3,293||2,634|
|Cutting height tops l||0,875||1,094||1,097||1,42.7|
|The truncation of the basin, f||0,508||0,635||Of 0.965|
The radius of the cavities r *
|The radius r ', not more||0,38|
|The angle j||7°730″||4°4548″|
* Dimensions are given for the design of the threading tool.
Note. The thread pitch R is measured parallel to the thread axis of the castle.
Buy in stock drill pipe domestic production to the state standard 631−75 the company offers Electrocentury-steel. Are economically profitable producer prices. The supplier ensures prompt delivery of products to the address specified by the consumer.