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View of the cubic concrete samples of the tensile or flexural testing (compressive strength test).
CU, Japanese man is cutting concrete with a tool.
Antenna for electromagnetic compatibility radiated immunity testing in a semi anechoic chamber. EMC waves spectrum field GTEM cell laboratory
Back flow preventer for fire sprinkler controls.
Structural testing of steel reinforced concrete columns
Iron Manufacturing
Fire hydrant
In a house wall, pipes were used to make a bushing for cables and pipes
Construction site
Compressive strength test or flexural testing of concrete, mechanical tensile test for concrete.  Compressive strength of concrete cube test provides an idea about all the characteristics of concrete.
Modern fire hydrants connectors at an office building.
Covering a surface by refractory composition.
salvador, bahia, brazil - august 14, 2023: view of a fire extinguisher in a public service office.
The exhaust pipes of the gas boiler of the autonomous heating system stick out of the wall
Submerged arc welding
There's a fire! I think... ;)
Old ceiling mounted glass drain, vent, pipes in school science room or laboratory.  Glass pipe is resistant to corrosive wastes such as acids.  Unusual plumbing materials.
Industrial Photography. Construction Works. Installation of pipes inside wiremesh. Pipes are installed before floor casting. Bandung, Indonesia
Ground bar for electrical installation.
Valencia, Spain - July 3, 2019: Cement samples used in the construction of a building, for further study in case of accident.
Chemical tank during washing.
electrical current distributon by wire for energy
salvador, bahia, brazil - december 23, 2020: hisdrante area and fire extinguisher is seen in the parking area of the airport of the city of Salvador.
Drilled hole into a concrete wall with core driller
Water pipe valve of supply watering system in hydroponic farm plant nursery greenhouse.
Hydrostatic test of the polyethylene pipeline in the construction site.
Public urban underground parking fisheye
Post tension system ; strengthen (reinforced concrete) by applying tension to the reinforcing rods after the concrete has set.
Female red head claim agent in glasses checking valves and pipe tubes of fire extinguishing system in parking of condominium
Free Images: "bestof:Cmp test 3.jpg Penetrants installed ready for firestopping for fire test Own 2006-11-22 Achim Hering Concrete Fire testing Firestops Firestop mortar Plumbing"
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