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A - Material processing equipment
B - Equipment for the production, transport and distribution of concrete, mortar and rendering mixes
B.0 - Proportioning and feeding equipment for aggregates
B.1 - Proportioning and feeding equipment for cement and binders
B.2 - Equipment for water supply
B.3 - Equipment for concrete additives and other additives
B.4 - Concrete mixers and concrete mixing plants
B.4.0 - Concrete pug-mill mixers, (pan mixers)
B.4.1 - Pan mixers
B.4.2 - Flow mixers (continuous mixers)
B.4.20 - Single-screw flow mixer
B.4.21 - Two-screw flow mixer
B.4.22 - Continuous mixer for air-placed concrete
B.4.3 - Tilting-drum mixers
B.4.4 - Miscellaneous concrete mixers and mixers for concrete laboratories
B.4.5 - Concrete mixing plants, compact design
B.4.6 - Truck-mixers
B.5 - Control, measuring and automatic systems
B.6 - Concrete surge bins
B.7 - Equipment for concrete transport and conveying
B.8 - Equipment for the treatment of residual concrete and non-potable water
B.9 - Miscellaneous equipment
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
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 B.4.22 Continuous mixer for air-placed concrete
data processing short term DURCHLAUFMI SPRITZB
standard
equipment		 DIN 459-1 defines the nominal capacity as the technical parameter. Nominal capacity = volume of the fresh concrete produced in one working cycle and in compacted condition (compaction rate 1.45). If the mixer size is specified together with dry fill quantity, the following rule applies:
Dry fill quantity = nominal capacity x 1.5
Inclined long pipe or trough as mixing vessel with continuous mixing and conveyor screw. The vessel is filled with separate components or a dry mix. With additional unit also suitable for pre-humidification and uniform feeding of the spraying machine.

With: adjustable electric motor, switch cabinet and wider retainer for the spraying machine
register of construction equipment 1991 2544
wearing part wear plates of mixer arms and scraper, blades or mixing screw, trough lining including lateral sheets