... life is long 2-3 t PM screw clamp for concrete pump TypeSnap clamp, bolt clamp, screw clamp, wedge clampTechnicalForging, high-temperature 1200 ... request1.We are a manufacturer of flange and concrete pump pipe clamp,which use the national high quality 40CRsteel (ASTM 5140 ... 1200 forging,it’s shaped. 2.Used in engineering mechanical pipe, it reduces arms weight. 3.High temperature forging,service life ...