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A - Material processing equipment
B - Equipment for the production, transport and distribution of concrete, mortar and rendering mixes
C - Lifting gear
D - Equipment for earthmoving and soil compaction
E - Road construction machinery
F - Railway track construction equipment
G - Floating equipment
H - Tunnel and mining construction equipment
J - Pile drivers and extractors, soil injection equipment
K - Drilling equipment, diaphragm wall equipment
L - Equipment for pipe jacking and pipeline construction
L.0 - Pipe-jacking equipment, non man-size
L.1 - Equipment for horizontal pipe jacking, man-size
L.2 - Trench excavators, trench cutting machines
L.3 - Equipment for the construction of ducts and and pipe-lines
L.4 - Miscellaneous equipment and accessories for the construction of ducts and and pipelines
L.5 - Testing and monitoring equipment for pipeleines
L.5.0 - Locating equipment
L.5.1 - Monitoring equipment
L.5.2 - Permeability testers
L.5.20 - Complete pumping station for filling operations
L.5.21 - Pump for pressure tests
L.5.22 - Differential pressure testing instrument
L.5.23 - Insulation tester
L.5.24 - Welding seam tester
L.5.25 - Pressure measuring equipment with recording device
L.5.26 - Computer-aided measuring system for pressure tests
L.5.27 - Temperature recorder
L.5.28 - Temperature measuring system
L.5.29 - Pipe scraper position locator
L.5.3 - Material testers
M - Equipment and plants for decontamination and environment protection
P - Transport vehicles
Q - Air compressors, pneumatic tools
R - Equipment for power generation, transformation and distribution
S - Hydraulic cylinders and hydraulic units
T - Centrifugal and piston pumps, pipelines
U - Formwork and scaffolds
W - Workshop machines and equipment
X - Construction site accomodations, containers
Y - Equipment for surveying, laboratory, office, communication and monitoring
register number L.5.22 Differential pressure testing instrument
data processing short term DIFF DRUCKPRUEFGER
standard
equipment		 Differential pressure testing instrument consisting of:
differential pressure meter, portable drum pressure recorder, precision pressure gauge, test bottle with valve, distributor transport case, copper connecting lines.
register of construction equipment 1991 9555-0001