SPM’s Ratchet Type External Pipe Clamp is precision Bored for Perfect Roundness and Pipe Sizing. manufacturer and supplier of Pipe Fit-up Outer Clamp in Russia, USA,UAE, Australia, Malaysia. Our Cage type Clamps are ruggedly built of quality steel to last longer. Additional sizes are available upon request. All Cage type Clamps are precision fitted to the proper specification to ensure proper alignment and quick clamping with a convenient hand lever for quick line-up of the pipe.