Attachment of control lines to outside of tubular

A downhole tubular system comprising:

• at least two tubular apparatus, each tubular apparatus including;
• at least one tubular;
• at least one line passage extending along an outer surface of the tubular;
• and
• at least one end clamp disposed at least one end of the line passage including:
• a clamp body;
• and
• at least one standoff disposed between the clamp body and the outer surface of the tubular defining a clamp protected space therebetween;
• and
• at least one coupling clamp disposed at a coupling of the at least two tubular apparatus including:
• at least two collars, at least one collar of the at least two collars disposed at each side of the coupling, each collar including a coupling body extending around a circumference of the outer surface defining a coupling protected space between the coupling body and the outer surface;
• and
• a coupling sleeve extending between the at least two collars.