DTH Drill Pipes

Product Details

DTH Drill Pipe

DTH drill pipes are widely used in mining, water well drilling,geothermal, oil and all kinds of DTH rock drilling, with high quality low carbon steel to ensure good resistance to strengthen and tensile, friction welded to ensure the adapter and pipe connect tightly as a whole set the cyclic extrusion-compression ensure reliable pipe.

API 5DP Drill Pipe for Well Drilling / Mining


1) OD: 2 7/8", 3 1/2", 4", 4 1/2", 5" 5-1/2"

2) Steel Grade: E75, X95, G105, S135

3) Type of end finish: EU-external upset, IEU-internal & external upset

4) All drill pipe are made according to API 5D

5) We can provide in many conditions, with or without hard banding (Arnco100, Arnco 300, tungsten carbide etc).


1. Length: 1000mm ~ 6000mm

2. Diameter: 76mm ~ 114mm

3. Wall thickness: 6mm ~ 6.5mm

4. Thread Pin/Box: 2 3/8" ~ 3 1/2" API REG

5. Carefully selected seamless steel pipe and high quality alloy steel for joint tools.

6. Precisely friction welded to ensure straightness and concentrically.

7. Multiple precisely heat-treated tools joint.

8. Internally and externally upset drill rods are available

DTH Drill Pipe Specifications
Outer diameter Thread Wall thickness Length
mm inch mm mm
76 3 API 2 3/8 REG
API 2 7/8 REG
API 3 1/2 REG
API 4 1/2 REG
API 2 3/8 IF
API 2 7/8" IF
API 3 1/2" IF
API 4 1/2" IF
API 5 1/2" IF
BECO 3 1/2"
6.3 1000-4000mm
89 3 1/2 6.3 1000-4000mm
102 4 6.3 1500-4000mm
114 4 1/2 7.5 1500-4500mm
127 5 8 1500-5000mm
133 5 1/4 8 1000-4000mm
140 5 1/2 14 3000-9000mm
152 6 8 ~ 20 1000-10000mm


How to order?

Please send us your inquiry with detail item description or with Model number.

If there is no packing demand we take it as our regular exported standard packing.

We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.

You send us your detail requirement, we provide quotation to you.

Can I expect a quality products?

All the production and processing are strictly according to ISO 9001:2008 and API standard. At the same time, mature production technology ensuring the quality satisfy international request. We also welcome the third party inspection, such as BV, SGS and TUV.

The information you may like to know before Payment:

1. Methods of Payment:

T/T (Telegraphic Transfer) or L/C at sight

2. Shipping way

Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air

Bulk order: we suggest by air or by sea.

3. Quality Control

We have our own experienced QC.

There will be strict inspection and testing for every order before shipping out.

ROSCHEN GROUP is professional in manufacturing and supplying quality dth drill pipes as one of the leading manufacturers and suppliers in China. We now bring you high quality dth drill pipes for sale, competitive in its excellent performance and high precision. Please rest assured to buy.