API Standard Drilling Rod For Water Well And Rock Drilling With Reg

Place of Origin: Hebei,China (Mainland)
Brand Name: Nailiang
Price :: Negotiation
Payment Terms :: L/C, D/A, T/T, Western Union
Delivery Time :: Within 7-12 days
Packaging Details :: Standard export package
Parts Name :: Professional manufacture supply rock drill rod Factory supply high quality rock mine drill rod T38
Material :: Carbon Steel,Carbide,High Manganese Steel
Type :: Drill Pipe,Drill Shank,drill rod
Supply Ability: 2000000PCS/YEAR
Advantage: Long use life
Diameter: 76-127


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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:100.0 USDProduction Capacity:100000 pieces per year
Trade Term:FOB,CFR,CIF,DAT,FAS,DDP,DAP,CIP,CPT,FCA,EXWPacking:Standard Export...
Payment Terms:Paypal, L/C, D/P, D/A, T/T, WU, Money GramDelivery Date:Within 7-15 days
Min. Order:10 Piece/Pieces
Means of Transport:Ocean, Air, Land

API Standard Drilling Rod For Water Well And Rock Drilling With Reg


DTH drill pipes play a significant role in all DTH drilling, regardless type of rock, hole depth or drill rig.The key features of a high quality DTH tube are durability, accuracy and manageability.

Drill pipe parameters

Rod dia(mm)Rod Length(mm)Thickness (mm)Connect ThreadTrigger Slot
3761000-60005API2 3/8"REG57/64.5
3761000-90008API2 3/8"REG57/64.5
3 1/2891000-60006API2 3/8"REG70/64
3 1/2891000-96008API2 3/8"REG70/64

Rod dia(mm)Rod Length(mm)Thickness (mm)Connect ThreadTrigger Slot
41021000-900010API2 3/7"REG76/89
4 1/21141500-76206API3 1/2"REG89/95
4 1/21141500-91408API3 1/2"REG89/95
4 1/21141500-914010API3 1/2"REG89/95
4 1/21141500-914018API3 1/2"REG89/95

Main features

1. Pipe body : cold draw seamless pipe . so the pipe have the accurate size , good centralizer.
2. Thread connector :Heat and Nitrogen treatment , so the pipe is more durable and easier to load and unload .
3. Friction welding .

Standard DTH drill pipe:

Diameter: 76mm, 89mm, 102mm, 114mm, 127mm, 140mm;
Length: 1000mm, 1500mm, 2000mm, 3000mm, 5000mm, 6000mm;
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

Cause and judgment of drill pipe sliding down

The drill pipe is fixed on the main winch drum through the steel wire rope, and the drill pipe can be raised or lowered accordingly when the drum is wound or released with the steel wire rope. The power of the drum comes from the main winch motor that has been decelerated for many times. Its stop is realized by the brake directly installed on the reducer. During the lifting or lowering of the drill pipe, if the operating handle is returned to the middle position and the drill pipe cannot stop quickly, there may be three reasons: first, the brake lag; Second, the two hydraulic locks at the outlet of the motor end fail, and the motor cannot stop rotating immediately under the effect of the torque of the wire rope; Three reasons are easy to be ignored. All engineering drilling rigs have a drill pipe release function. The function is that the solenoid valve 3 provides release brake signal oil, and then the solenoid valve 2 connects the oil inlet and outlet of the main winch motor through two oil pipes, so as to ensure that the drill bit can always contact the working face and have a certain pressure during drilling. Under other working conditions, the solenoid valve 2 will disconnect the two oil pipes leading to the inlet and outlet of the motor. If the disconnection is not timely, the above-mentioned fault phenomenon will occur.

Category: Rock Drill Rods