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Lightweight series tube clamps are used in six sizes of ordinary mechanical pressure pipes.
The external diameter of the pipe is Φ6~57mm.
Double series tube clamps are used in five sizes of ordinary mechanical pressure pipes.
The external diameter of the pipe is Φ6~42mm.
Heavy duty tube clamps are used in high mechanical pressure pipes of 10 sizes.
The external diameter of the pipe is Φ8~406mm.