Cold Drawn Seamless DTH Pipe

GMD Cold Drawn Seamless DTH Pipe is made of superior alloy and the both thread ends are friction welded to the seamless steel pipe.The high pressure air is delivered to DTH hammer by DTH drill pipe, simultaneously it transfers the rotation and press force to the DTH hammer....

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Specification

1. Outside Diameter:76mm, 89mm, 102mm, 114mm, 127mm, 140mm,

2, Wall Thickness: 5-12mm

3, Length: 1000mm, 1500mm, 2000mm, 3000mm, 5000mm, 6000mm;

4, Material: Alloy Steel

5. Thread: 2 3/8” API REG, 2 7/8” API REG, 3 1/2” API REG, 4 1/2” API REG, 2 3/8 API IF, 3 1/2 API IF

6. Application: Water Well Drilling, Mining, Oil Drilling, Building, Machinery, Traffic

 

Product Information:

Key features of a high quality DTH pipe are durability, accuracy and manageability. GMD DTH pipes are made from cold drawn piping, providing a superior surface finish and tolerance. This drastically reduces the risk of scaling from the pipes entering the hammer, a major cause of premature hammer failure. The joints are friction welded to achieve maximum strength and ensure long thread life. 

Cold-drawn seamless tubing material, is used to ensur e straightness, thickness and high strength. This gives a smoother drilling process and, consequently, a longer service life.

The material also provides a smooth, fine surface that eliminates the risk of hammer failures caused by scaling. Furthermore, the tool joints are made out of micro alloy steel and are case-hardened for superior thread life.

 

Cold-Drawn Seamless Tubing Material

● Superior straightness

● High strength

● Uniform pipe wall thickness

● Less weight

 

Friction Welded End Pieces

1. High-strength, 100 % metal-to-metal joint with parent metal properties

2. Low-temperature process, gives a small HAZ (heat Affected zone) that reduces the risk of failure.

Cold Drawn Seamless DTH Pipe
Outer diameterThreadWall thicknessLengthWrench flatWeight
mminchmminchmmfootmminchkg
API regular thread
7632 3/8 API Reg5.52/910003 2/7572 1/417
7632 3/8 API Reg5.52/915005572 1/422
7632 3/8 API Reg5.52/920006 5/9572 1/426
7632 3/8 API Reg5.52/930009 5/6572 1/435
7632 3/8 API Reg
2/910003 2/7652 5/917
5.5
7632 3/8 API Reg5.52/915005652 5/922
7632 3/8 API Reg5.52/920006 5/9652 5/926
7632 3/8 API Reg5.52/930009 5/6652 5/935
7632 3/8 API Reg6.51/430009 5/6652 5/946
7632 3/8 API Reg6.51/4450014 3/4652 5/956
7632 3/8 API Reg6.51/4600019 2/3652 5/973
893 1/22 3/8 API Reg5.52/910003 2/7652 5/920
893 1/22 3/8 API Reg5.52/915005652 5/925
893 1/22 3/8 API Reg5.52/920006 5/9652 5/930
893 1/22 3/8 API Reg5.52/930009 5/6652 5/940
893 1/22 3/8 API Reg6.51/410003 2/7652 5/921
893 1/22 3/8 API Reg6.51/415005652 5/926
893 1/22 3/8 API Reg6.51/420006 5/9652 5/932
893 1/22 3/8 API Reg6.51/430009 5/6652 5/945
893 1/22 3/8 API Reg6.51/4450014 3/4652 5/965
893 1/22 3/8 API Reg6.51/4600019 2/3652 5/984
IF Thread

Outer diameterThreadWall thicknessLengthWrench flatWeight
mminchmminchmmfootmminchkg
502F42×104.51/610003 2/7401 5/8-
602 3/8F48×104.51/610003 2/7401 5/8-
602 3/8F48×104.51/615005401 5/8-
602 3/8F48×104.51/620006 5/9401 5/8-
602 3/8F48×104.51/630009 5/6401 5/8-


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