4130+SR Wire-Line Diamond Core Drill rods,Drill inner pipes,drill
outer pipes
Pipeway Specially in manufacturing cold drawn precision Seamless wire line Drill Pipes for Geological
Exploration Seamless Drill Pipes BQ/NQ/HQ/PQ,and the inner pipes and outer
casing tubes.We have the steel grade
level XJY600,XJY750,XJY850,XJY950,BL850,BL950.
The detail seamless steel pipes of
materials:SAE4130,45MnMoB,30CrMnSiA,SAE4140
SPECIFICATIONS: A519 Seamless mechanical tubing for drill rods.
1).BQ,NQ,HQ DRILL PIPES DIMENSION AND TOLERANCES (IN MM)
| name | outer diameter, mm | inner diameter, mm | wall of the pipe, mm | Length, mm | scope of application |
| Pipe 57х6 | 57,15+0,20 57,15+0,25 | 46,04-0,20 46,04-0,25 | 5,555* | 3550 | Production of outer pipe В
|
| Pipe 73х6 | 73,03+0,25 73,03+0,25 | 60,53-0,25 60,53-0,25 | 6,25* | 3550 | Production of outer pipe N |
| Pipe 92х7 | 92,08+0,25 92,08+0,38 | 77,79-0,25 77,79-0,38 | 7,145* | 3600 | Production of outer pipe H |
| Pipe 117,4х7 | 117,42+0,25 117,42+0,38 | 103,20-0,25 103,20-0,38 | 7,11* | 3600 | Production of outer pipe P |
| Pipe 43х2,5 | 42,86+0,20 42,86+0,25 | 38,10-0,20 38,10-0,25 | 2,38* | 3250 | Production of inner pipeВ |
| Pipe 55,6х3 | 55,56+0,20 55,56+0,25 | 50,01-0,20 50,01-0,20 | 2,775* | 3250 | Production of inner pipe N |
| Pipe 73х3 | 73,03+0,20 73,03+0,25 | 66,93-0,20 66,93-0,25 | 3,05* | 3250 | Production of inner pipe H |
| Pipe 95,4х3,5 | 95,40+0,25 95,40+0,38 | 88,90-0,25 88,90-0,38 | 3,25* | 3250 | Production of inner pipe P |
| Q series drill pipes | Conditions | Size mm | Quantity, units | Weight kg/pcs | Length, mm |
| BQ drill pipe | Quenched and Tempered | 55.6x46 | 500 | 18.5 | 3050 |
| NQ drill pipe | Quenched and Tempered | 69.9х60.3 | 1000 | 24.6 | 3050 |
| HQ drill pipe | Quenched and Tempered | 88.9x77.8 | 1000 | 35.3 | 3050 |
| PQ drill pipe | Quenched and Tempered | 114.3x101.6 | 500 | 47.5 | 3050 |
2).The Mechanical properies of drill pipes:
| Technical data | Tensile Strength, MPA | Yield Strength, MPA | Elongation, % | Hardness,HRC |
| 4130+SR | 730 | 620 | 14 | 22-26 |
| 30CrMNSIA+QT | 850 | 750 | 14 | 28-32 |
| 4130+QT | 950 | 850 | 13 | 30-35 |
| Deviation from straightness | Not more than 0,3 mm per 1 meter of length,total 1/6000 | |
| Deviation from straightness | Not more than 0,25 mm per 0.2 meter of length from each of the end
of pipe | |
| Tolerance for BQ drill rod | Deviation of the diameter is 55.75+0,2/-0,2mm, 46.15 +0,2/-0,2mm | |
| Tolerance for NQ drill rod | Deviation of the diameter is 70.1+0,15/-0,2mm, 60.4-0,3mm | |
| Tolerance for HQ drill rod | Deviation of the diameter is 89+0,38/-0,1mm, 78.1-0,48mm | |
| Tolerance for PQ drill rod | Deviation of the diameter is 114.3+0,50, 103.2-0,5mm | |
| Eccentricity | Not more than 7% | |
Drill pipes by Eddy Current Examination according to ASTM E309
shall be applied on all tubes using External
Longitudinal
NON-DESTRUCTIVE TEST
notch with depth of no more than 7.5% of wall thickness (maximum
notch depth 0.80mm and minimum notch
depth 0.30mm) , 0.30mm maximum width and 25mm maximum length, made
from the same chemistry and size
of tubing.
THE CORE DRILLING PIPES SURFACE CONDITION
The tubes must have smooth surface,black surface or black
phosphatized.
THE STEEL TUBES AND STEEL PIPES MARKING
The request information shall be marked on each tube with paint,
and
each bundle shall be identified with a securely attached metal tag.
STEEL TUBES AND STEEL PIPES SURFACE COATING
The tubes inside and outside shall be coated with a rust inhibitor
PACKING OF ALLOY SEAMLESS TUBES
Standard Export worthy packing, preferably in hexagonal bundle with
plastic wrapped and steel strapped.
STEEL PIPES PRODUCTS PICITURES
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BQ drill pipes,HQ drill rods,HQ drill rods,drill inner tubes,drill
outer tubes,outer pipes,inner pipes
