ISO Passed Drill Rod Top Subs With API Regular Box , API Regular Pin Thread

Drill Rods Top Subs with API Regular Box, API Regular Pin thread


Drill pipe joint buckle type

Internal Flush connection threads:

Internal Flush connection threads: mainly used for outer thickening drill pipe. The characteristic is that the inner diameter of the drill pipe is the same, and the flow resistance of the drilling fluid is small; but the outer diameter is large and easy to wear.

Full Hole Connection threads:

Full Hole Connection threads: mainly used for thickening drill rods inside and outside. It is characterized in that the drill pipe has two inner diameters, and the drilling fluid flow resistance is greater than the inner flat type, but the outer diameter is smaller than the regular type.

Regular Connection threads:
Regular Connection threads: mainly used for inner thickening drill pipe and drill bit, fishing tools. The characteristic is that the inner diameter of the joint inner diameter is smaller than the inner diameter of the pipe body, and the drilling fluid has large flow resistance, and the relative flow resistance is the largest among the three buckle types, but the outer diameter is the smallest and the strength is large.

The above three types of joints are all V-shaped threads, but the buckle type, the buckle length, the taper and the size are all very different.

NC type thread

Number style connection threads

The digital (NC) series connector is a US national standard coarse thread series. It has been adopted as an international standard by the API. NC threads are also V-threaded, and some NC-type joints have the same pitch circle diameter, taper, pitch and thread length as the old API standard joints and can be used interchangeably.

Most of the oil drill pipe joints are in the form of outer thickening or inner and outer thickening. The outer diameter of the drill pipe joint is larger than the outer diameter of the pipe body. During the drilling process, the inner wall or the casing is in constant contact with the friction, resulting in wear and tear, so as to avoid broken joints. For drilling accidents such as poles and trips, drill pipe joint wear belts must be provided on the drill pipe female joint.

ROSCHEN GROUP

ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.

ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.

ROSCHEN Manufactory PROCESS

ROSCHEN Sales Value Growing Up!

ROSCHEN'S MISSION

1. Strive to create and supply Best quality products for the industry that last longer than the average products.

2. Provide excellent service for our clients. 24 hour-7 days /week schedule to get our clients what they need – FAST.