1, seamless steel pipe concrete is better to use pump to finish the delivery to the top and the construction of concrete injection, consists of two arch foot to vault symmetrical evenly continuous injection one time.
2, long span arch rib steel tube concrete should be according to the design loader process balanced injected appropriate points by the arch foot ring, segment and every storehouse to vault symmetrically. Arch rib in the process of injection displacement shall not exceed the design requirements.
3, steel tube concrete should have the performances of low foam, large liquidity, shrinkage compensation, the initial setting delay.
4, the concrete-filled seamless steel pipe should clean the tube dirt before injection, wetting tube wall, first they appropriate slurry injection pump concrete, until the top of the steel pipe vent discharge qualified concrete to stop. After the injection of concrete, the backflow valve should be closed.
5, the quality detection method of the concrete filled steel tube should be given priority in ultrasonic testing, artificial knock detection is complementary.
6, concrete filled steel tubular pump order should be performed in accordance with the requirements of design, steel pipe first and abdominal box later. 

Hebei Abter is a leading supplier and exporter of  steel pipes in China. Abter is an exporting company who is jointly invested by 6 top steel factories ,with  the purpose to providing multiple products and professional services to the clients.we establish a long -term business relationship with many Group company.Our company is a large scale enterprise which manufacture and supply LSAW, fluid pipe, SSAW,ERW, DIN Tube, , alloy pipe, tubing, casing, line pipe, etc. With advanced technological equipment, tremendous technical strength and reliable product quality, our  steel pipes have been exported to the Middle East, Southeast Asia, Africa, South America, North America, Europe, Australia and many other countries and regions.