... fluid, pipe welding parts to be no pollution to ensure the welding quality. 2, a very high speed cutting, ... the cutting of the whole machine weighs only 50 kg. Widely used: to be welded pipe welding preparation, and other chemicals, LNG, refined oil ... to cut off the blade rotation around the pipe to cut the public. The tubes were stepped up to ensure that the vertical blades and self-centering on the ...