SPJ900/32 box girder bridge machine passed the review

The SPJ900/32 box girder bridge machine jointly developed by China Railway 17th Bureau Group Co., Ltd., Shijiazhuang Railway Institute and China Railway Wuqiao Heavy Industry passed the railway after a series of no-load, heavy-duty, walking and type tests. Review by the Ministry of Science and Technology, the Ministry of Railways Construction Management, the Ministry of Railways Engineering Design and Appraisal Center, and the Ministry of Railways Engineering Management Center.

The review team unanimously agreed that the bridge erecting machine has undergone type testing by the designated testing unit of the country, and the test is qualified. The performance parameters meet the technical design conditions, can meet the requirements of the frame beam at the construction site, and agree to be put into use at the factory.

Airless Spray Gun
This process occurs when paint is applied to an object through the use of an air-pressurized Spray Gun. The Sprayer Gun has a nozzle, paint basin, and air compressor. When the trigger is pressed the paint mixes with the compressed air stream and is released in a fine spray.


Types of nozzles and sprays
Due to a wide range of nozzle shapes and sizes, the consistency of the paint can be varied. The shape of the workpiece and the desired paint consistency and pattern are important factors when choosing a nozzle. The three most common nozzles are the full cone, hollow cone, and flat stream.There are two types of air-gun spraying processes. In a manual operation method the air-gun sprayer is held by a skilled operator, about 6 to 10 inches (15–25 cm) from the object, and moved back and forth over the surface, each stroke overlapping the previous to ensure a continuous coat.In an automatic process the gun head is attached to a mounting block and delivers the stream of paint from that position. The object being painted is usually placed on rollers or a turntable to ensure overall equal coverage of all sides.

Airless Spray Gun

Airless Spray Gun,Plunger Rod,Spray Paint Gun,Electric Paint Spray Gun

Fuzhou HVBAN Mechanical Equipment Co., Ltd. , https://www.hi-sprayer.com