Hollow Injection Bar

Hollow Injection Bar

B7X1 Domestic Hollow Injection Bar

Bar
Diameter
Average
Inner
Diameter
Minimum
Net Area
Through Threads
Minimum
Ultimate
Strength
Minimum
Yield
Strength
Nominal
Weight
Part
Number
32 mm
(1-1/4”)
0.787”
(20.0 mm)
0.556 in²
(359 mm²)
58.4 kips
(260 kN)
47.2 kips
(210 kN)
2.1 lbs/ft
(3.1 kg/m)
B7X1-032N
32S mm
(1-1/4”)
0.626”
(15.9 mm)
0.776 in²
(501 mm²)
81.5 kips
(363 kN)
66.0 kips
(294 kN)
2.7 lbs/ft
(4.0 kg/m)
B7X1-032S
38 mm
(1-1/2”)
0.830”
(21.1 mm)
1.067 in²
(688 mm²)
112 kips
(498 kN)
90.7 kips
(404 kN)
3.76 lbs/ft
(5.6 kg/m)
B7X1-038N
51 mm
(2”)
1.187”
(30.1 mm)
1.795 in²
(1158 mm²)
188 kips
(837 kN)
152 kips
(677 kN)
6.26 lbs/ft
(9.3 kg/m)
B7X1-051N
76 mm
(3”)
1.890”
(48.0 mm)
3.880 in²
(2503 mm²)
407 kips
(1811 kN)
329 kips
(1466 kN)
13.79 lbs/ft
(20.5 kg/m)
B7X1-076N


B7Y1 Non-Domestic Hollow Injection Bar

Bar Designation
& Outer
Diameter
Average
Inner
Diameter
Minimum
Net Area
Through Threads
Minimum
Ultimate
Strength
Minimum
Yield
Strength
Nominal
Weight
Part
Number
T30S – 30 mm
(1.18”)
11 mm
(0.43”)
0.662 in2
(427 mm2)
71.9 kips
(320 kN)
58.5 kips
(260 kN)
2.42 lbs/ft
(3.6 kg/m)
B7Y1-030S
T40N – 40 mm
(1.57”)
20 mm
(0.79”)
1.046 in2
(675 mm2)
121 kips
(539 kN)
96.7 kips
(430 kN)
4.23 lbs/ft
(6.3 kg/m)
B7Y1-040N
T40S – 40 mm
(1.57”)
16 mm
(0.63”)
1.222 in2
(788 mm2)
148 kips
(660 kN)
118 kips
(525 kN)
4.84 lbs/ft
(7.2 kg/m)
B7Y1-040S
T52N – 52 mm
(2.05”)
24 mm
(0.94”)
1.874 in2
(1209 mm2)
209 kips
(929 kN)
164 kips
(730 kN)
6.92 lbs/ft
(10.3 kg/m)
B7Y1-052N
* T73N – 73 mm
(2.87”)
53 mm
(2.08”)
2.5 in2
(1615 mm2)
260 kips
(1160 kN)
218 kips
(970 kN)
8.9 lbs/ft
(13.2 kg/m)
B7Y1-073N *
T76S – 76 mm
(2.99”)
45 mm
(1.77”)
3.891 in2
(2510 mm2)
427 kips
(1900 kN)
337 kips
(1500 kN)
13.23 lbs/ft
(19.7 kg/m)
B7Y1-076S
* T103N – 103 mm
(4.06”)
78 mm
(3.07”)
4.87 in2
(3140 mm2)
510 kips
(2270 kN)
405 kips
(1800 kN)
17.0 lbs/ft
(25.3 kg/m)
B7Y1-103N *
* T130N – 130 mm
(5.12”)
60 mm
(2.36”)
16.2 in2
(10452 mm2)
1785 kips
(7940 kN)
1180 kips
(5250 kN)
50.4 lbs/ft
(78 kg/m)
B7Y1-130N *

* Diameter available on special order. Contact your Williams representative for fastener and drill bit information.

Hollow Injection Bar Accessories

Threaded Bar Profile

The Hollow Injection Bar is a high strength, impact-resistant heavy wall steel tubing conforming to ASTM A519 or A513 and is continuously threaded over its entire length with a heavy-duty left-hand thread/deformation pattern. The steel tubing provides maximum flow with minimum resistance during high-pressure flushing and grouting operations. The thread form (similar for all diameters) is a unique Williams feature that provides a lower thread pitch angle to provide easier coupling disengagement without “locking up”, than conventional rope threads during drilling operations. This thread form provides more surface area and thread/deformations per unit length for superior bond capabilities over that of competitive drill steel thread forms. The bar’s thread/deformation pattern has also shown to exceed the bond characteristics of ASTM A615 reinforcing steel. The lower thread angle allows the installed anchor to be torque-tensioned. The Geo-DrillInjection Anchor system is available with enhanced corrosion protection with hot-dip galvanized/epoxy coated bars and components. Installation adapters for the Geo-Drill Injection Anchors are available for all drill rigs.

Couplings

Hollow Injection Bar

The Hollow Injection Bar Couplings have a unique tapered center stop which seals the Injection Bar connection to minimize grout leakage during simultaneous routing and drilling operations. The internal stop design also assures a full positive thread connection in both Injection Barends while providing a matching end-bearing between bars that reduces percussion energy loss to the drill bit. The couplings are machined from ASTM A29 grade C1045 high strength steel to provide 100% ultimate tensile or compression strength capacity of the installed anchorage. The coupling OD is tapered on both ends to allow drill cuttings and grout displacement during drilling while the ID has internal chamfers to assist alignment and connection of the bars. The Non-Domestic Hollow Injection BarCouplings do not contain a tapered center stop, but instead, have an o-ring gasket to minimize grout leakage.

Stop-Type Couplings

Bar Outside
Diameter
Overall
Length
Part
Number
32 mm 1-5/8”
(41 mm)
6-1/4”
(159 mm)
B7X2-32
38 mm 2”
(51 mm)
7-5/8”
(194 mm)
B7X2-38
51 mm 2-5/8”
(67 mm)
8-1/2”
(216 mm)
B7X2-51
76 mm 3-7/8”
(98 mm)
9-7/8”
(251 mm)
B7X2-76
T30 1-1/2”
(38 mm)
4-1/8”
(105 mm)
B7Y2-30
T40 2-1/8”
(54 mm)
5-1/2”
(140 mm)
B7Y2-40
T52 2-3/4”
(70 mm)
6-1/4”
(159 mm)
B7Y2-52
T76 3-3/4”
(95 mm)
8-5/8”
(219 mm)
B7Y2-76

 

Hex Nuts

Hollow Injection Bar

The Hex Nuts designed exclusively for the Geo-DrillInjection Anchor system are a full 100% ultimate tension or compression strength component. They are manufactured from a high strength steel com-plying with ASTM A10.

Nominal
Bar Diameter
Across
Flats
Across
Corners
Thickness Part
Number
32 mm
(1-1/4”)
1-3/4”
(44 mm)
2.0”
(51 mm)
1-3/4”
(44 mm)
B7X3-32
38 mm
(1-1/2”)
2”
(51 mm)
2.3”
(59 mm)
2”
(51 mm)
B7X3-38
51 mm
(2”)
3”
(76 mm)
3.5”
(88 mm)
3-1/2”
(89 mm)
B7X3-51
76 mm
(3”)
4-1/4”
(108 mm)
4.9”
(125 mm)
3-3/4”
(95 mm)
B7X3-76
T30 1-7/8”
(46 mm)
1-3/8”
(51 mm)
B7Y3-30
T40 2-1/2”
(65 mm)
2”
(51 mm)
B7Y3-40
T52 3-1/8”
(80 mm)
2-3/4”
(70 mm)
B7Y3-52
T76 4”
(102 mm)
3-1/8”
(80 mm)
B7Y3-76

R8M Beveled Washers

Bar Degree
of Bevel
Outside
Diameter
Inside
Diameter
Maximum
Thickness
Minimum
Thickness
Part
Number
32 mm
& T30
15° 2-13/16”
(71 mm)
1-5/16”
(33 mm)
1”
(25 mm)
5/16”
(8 mm)
R8M-09S
38 mm 15° 3-3/8”
(86 mm)
1-3/4”
(44 mm)
1-1/4”
(32 mm)
3/8”
(9.5 mm)
R8M-12S
T40 15° 3-1/2”
(89 mm)
2”
(51 mm)
1-1/4”
(32 mm)
3/8”
(9.5 mm)
R8M-13S
51 mm
& T52
15° 5-1/4”
(133 mm)
2-9/32”
(58 mm)
1-5/8”
(41 mm)
7/16”
(11 mm)
R8M-16-150
76 mm
& T76
15° 6”
(152 mm)
3-1/2”
(89 mm)
2-7/64”
(54 mm)
1/2”
(13 mm)
R8M-24B7X

***Beveled washers must be used in conjunction with hardened washer.***

 

R9F Hardened Washers

Bar Outside
Diameter
Inside
Diameter
Thickness Part
Number
32 mm
& T30
2-1/2”
(64 mm)
1-3/8”
(35 mm)
5/32”
(4 mm)
R9F-10-436
38 mm
& T40
3”
(76 mm)
1-5/8”
(41 mm)
5/32”
(4 mm)
R9F-12-436
51 mm
& T52
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.5 mm)
R9F-16-436
76 mm
& T76
5-1/2”
(140 mm)
3-1/8”
(80 mm)
9/32”
(7 mm)
R9F-24-436

 

B7XC Centralizers

Hollow Injection Bar

The bar can be centralized in the drill hole on 10’ centers by attaching a steel centralizer in front of the coupling during the drilling operation. Available plain or hot dip galvanized to ASTM A123. State drill hole diameter and bar size when ordering.

 

B7XB Drill Bits

Hollow Injection BarHC Hardened Bit
Hardened cross-cut drill bit, suitable for the majority of applications including narrow bands of soft rock.
Soil Types: Fills and Medium Dense Gravels

 

Hollow Injection BarCC Carbide Bit
Tungsten carbide cross-cut drill bit. An excellent choice for the majority of granular soils with mixed hard formations.
Soil Types: Fills, Gravels, Shale & Seamy Rock Formations

 

Hollow Injection BarSB Sand/Clay Bit
Two-stage cross-cut drill bit, suitable for loose to medium dense ground and fills.
Soil Types: Sand, Clay, and Light Gravels

 

Hollow Injection Bar

BB Button Bit
Tungsten carbide hemispherical button drill bit for moderately strong to strong rock, boulders, and rubble.
Rock Types: Mudstone, Limestone, and Granite

 

Hollow Injection BarCB Cobble Bit
Offset face cross-cut drill bit suitable for drilling in cobbles with silt and gravel as well as sedimentary bedrock material.

 

Nominal
Bar Diameter
Available Drill Bit Diameters
HC CC SB BB CB
32 mm 2”
(51 mm)
2”
(51 mm)
­­5”
(127 mm)
2-1/2”
(65 mm)
4”
(102 mm)
2-1/2”
(65 mm)
2-1/2”
(65 mm)
3”
(76 mm)
3”
(76 mm)
3”
(76 mm)
3-1/2”
(89 mm)
3-1/2”
(89 mm)
3-1/2”
(89 mm)
4”
(102 mm)
4”
(102 mm)
4”
(102 mm)
38 mm

T30

T40

2-1/2”
(65 mm)
2-1/2”
(65 mm)
5”
(127 mm)
2-1/2”
(65 mm)
4”
(102 mm)
3”
(76 mm)
3”
(76 mm)
3”
(76 mm)
3-1/2”
(89 mm)
3-1/2”
(89 mm)
3-1/2”
(89 mm)
6”
(152 mm)
4”
(102 mm)
4”
(102 mm)
4”
(102 mm)
4-1/2”
(114 mm)
5”
(127 mm)
51 mm 3”
(76 mm)
6”
(152 mm)
3”
(76 mm)
4-3/4”
(121 mm)
3-1/2”
(90 mm)
3-1/2”
(90 mm)
4”
(102 mm)
4-1/2”
(114 mm)
8”
(203 mm)
­­4”
(102 mm)
6”
(152 mm)
5”
(127 mm)
­­5”
(127 mm)
6”
(152 mm)
T52 4”
(102 mm)
7”
(178 mm)
76 mm

T76

5”
(125 mm)
7”
(178 mm)
5”
(125 mm)
6”
(152 mm)
10”
(254 mm)
6”
(152 mm)
7”
(175 mm)

 

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