Drilmax® Precision Tubes.

Seamless Precision Tubes for Mineral Exploration Drilling
Available Through Solsteel

Drilmax® Steel Tubes are cold drawn, heat-treated and straightened with the highest expertise to offer the best benefits to exploration drilling equipment manufacturers.

High resistance to hardest drilling conditions: maximum depth, directional drilling, hard grounds

Drilmax® Steel Tubes offer very high mechanical properties such as. Yield Strength (Rp0.2) up to 850 MPa, and Tensile Strength (Rm) up to 950 MPa.

100% Drilmax® Steel Tubes undergo specific non-destructive testing to guarantee the best surface quality and integrity.

Best behaviour in rotation

Drilmax® Steel Tubes offer the best straightness levels, with special attention to tube ends: max. 1 mm/6000mm max.
Drilmax® Steel Tubes guarantee the tightest dimensional tolerances

How we keep our promises

100% Drilmax® Steel Tubes are delivered together with certificates including chemical composition and mechanical properties

100% Drilmax® Steel Tubes are manufactured in plants certified ISOITS 16949 and ISO 9001

100% Drilmax® Steel Tubes are manufactured in environment-friendly plants certified ISO 14001

Research and Development Center (SZMF) offer advanced developments together with our customers

Drilmax® Steel Tubes are manufactured in all key dimensions used for Exploration Drilling all over the world

Outside Diameter Drilling Standards Application Tubular Equipment
From
40mm (1.575")
to
140mm (5.512")*		 DCDMA Standard
British Standard
European Metric
Others upon Request		 Wireline Core Drilling Drill Rods Core Barrels Casings Couplings
Reverse Circulation Drilling Drill Rods   Casings Couplings
Down The Hole Drilling Drill Rods   Casings  

*Outside Diameters down to 25.4mm, or up to 178mm, can be available upon request, but with straightness level of 1mm/m max.

Tolerances on diameter
Outside Diameter Inside Diameter
1" < OD <= 1.575"
(25.40mm < OD <= 40mm		 +0.0051" -0
(+0.13mm -0)		 ID <= 2.953"
(ID <= 75mm)		 +0 -0.010"
(+0 -0.25mm)
1.575" < OD <= 3.150"
(40mm < OD <= 80mm)		 +0.010" -0
(+0.25mm -0)		 2.953" < ID <= 5.512"
(75mm < ID <= 140mm)		 +0 -0.015"
(+0 -0.38mm)
3.150" < OD <= 5.512"
(80mm < OD <= 140mm)		 +0.015" -0
(+0.38mm -0)		 ID > 5.512"
(ID > 140mm)		 +0 0.018"
(+0 -0.45mm)
5.512" < OD <= 7.008"
(140mm < OD <= 178mm)		 +0.018" -0
(+0.45m -0)		    
Length
Usual Cut Length of 10.397 feet (3,169mm), with tolerance of -0 +1/8" (-0 +3mm). Random or longer cut length are also available upon request.

Drilmax® Steel Tubes are packed and protected for shipments all over the world.

Drilmax® Steel Tubes are oiled internally and externally.
Drilmax® Steel Tubes are strongly packed for protection during trucking and overseas shipment.

 

Mechanical Properties
Material Analysis
Yield Strength min.
MPA
Ultimate Tensile Strength min.
MPA
Elongation min. gauge length
(51mm or 2")
Delivery Condition / Machinability
Typical chemical composition % max.
C
Mn
Si
Mo
Cr
P
S
Drilmax® 550
550
690
18
+SR / +
0.200
1.600
0.500
0.025
0.025
Drilmax® 620
620
725
17
+SR / +
0.440
1.650
0.300
0.035
0.035
Drilmax® 620 Q2
620
725
17
+SR / ++
0.440
1.650
0.300
0.035
0.015-0.040
Drilmax® 650
650
790
15
+SR / +
0.330
0.600
0.350
0.250
1.100
0.035
0.035
Drilmax® 700
700
800
15
+SR / +
0.220
1.600
0.500
0.035
0.035
Drilmax® 700 Q2
700
800
15
+SR / ++
0.220
1.600
0.500
0.035
0.015-0.040
Drilmax® 730
730
820
15
 +SR / +
0.440
1.650
0.300
0.035
0.035
Drilmax® 730 Q2
730
820
15
+SR / ++
0.440
1.650
0.300
0.250
1.100
0.035
0.015-0.040
Drilmax® 850
850
950
15
+SR / +
0.420
1.700
0.450
0.020
0.200
0.035
0.035

Drilmax® 730 can be delivered upon request with Ultra Low Residual Hoopstresses -max 80 MPA - for OCOMA B, Nand H dimensions.

Further (R & D) research and development are in progress. Please ask for any specific inquiry.
*+SR means Stress Relieved

 

www.smp-tubes.fr