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Earth Bosses

An image of the Wallis earth boss
In-situ image of an earth bossDimensional drawing of an earth boss

The earth boss is designed to provide an earth connection point on a steel structure. The earth boss is welded onto steel vessels, tanks and other structures. Connections should be wrapped with Denso Tape.

D (mm)L (mm)Thread SizeUnit Weight (kg)Part Number
D (mm)25L (mm)25Thread SizeM8Unit Weight (kg)0.11Part NumberEPB 2525
D (mm)30L (mm)30Thread SizeM8Unit Weight (kg)0.18Part NumberEPB 3030
D (mm)30L (mm)30Thread SizeM10Unit Weight (kg)0.20Part NumberEPB 3030/10
D (mm)30L (mm)40Thread SizeM10Unit Weight (kg)0.33Part NumberEPB 3040
D (mm)30L (mm)40Thread SizeM12Unit Weight (kg)0.36Part NumberEPB 3040/12
D (mm)30L (mm)50Thread SizeM10Unit Weight (kg)0.50Part NumberEPB 3050
D (mm)30L (mm)50Thread SizeM12Unit Weight (kg)0.52Part NumberEPB 3050/12
D (mm)40L (mm)30Thread SizeM8Unit Weight (kg)0.24Part NumberEPB 4030/8
D (mm)40L (mm)30Thread SizeM10Unit Weight (kg)0.35Part NumberEPB 4030
D (mm)40L (mm)40Thread SizeM10Unit Weight (kg)0.43Part NumberEPB 4040
D (mm)40L (mm)40Thread SizeM12Unit Weight (kg)0.45Part NumberEPB 4040/12
D (mm)40L (mm)50Thread SizeM10Unit Weight (kg)0.65Part NumberEPB 4050
D (mm)40L (mm)50Thread SizeM12Unit Weight (kg)0.67Part NumberEPB 4050/12
D (mm)50L (mm)30Thread SizeM8Unit Weight (kg)0.29Part NumberEPB 5030/8
D (mm)50L (mm)30Thread SizeM10Unit Weight (kg)0.31Part NumberEPB 5030
D (mm)50L (mm)40Thread SizeM10Unit Weight (kg)0.53Part NumberEPB 5040
D (mm)50L (mm)40Thread SizeM12Unit Weight (kg)0.55Part NumberEPB 5040/12
D (mm)50L (mm)50Thread SizeM10Unit Weight (kg)0.80Part NumberEPB 5050
D (mm)50L (mm)50Thread SizeM12Unit Weight (kg)0.80Part NumberEPB 5050/12

Material: Mild Steel with Stainless Steel Fittings

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A. N. Wallis & Co Ltd
Greasley Street, Bulwell
Nottingham, NG6 8NG

+44 (0) 115 927 1721
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