Pipe clamp The available size is : 1"2",3",4",5",6.5". The material is ASTM.1040. Function:pipeline transportation Our company ... as geology ,mine and concrete industry .With the modern technical spring pin,when pressing down ,the handle will be closed automatically ... available size is : 1"2",3",4",5",6.5".OEM or ODM is welcome.The matched spring pin, rubber seal and pipe end ...