Tube clamp

A tube clamp comprising:

• a binding strap adapted for attaching to the connection area of two tubular members being inserted one into the other,
• a screw bolt mounted in said binding strap, and a nut threaded onto said screw bolt to adjustably fasten tight said binding strap in an overlapping looped configuration,
• wherein said binding strap is injection-molded from high strength plastics, said binding strap having a first end and a second end portions, said binding strap including:
• a first lug integrally formed at said first end portion to project therefrom, said first lug having formed therein a through hole engaging said screw bolt, and
• a second lug disposed to project from said second end portion, said second lug having formed therein a screw hole for engaging said screw bolt in axially displaceable manner, said second lug being adjustably displaceable relative to said first lug responsive to axial advancement of said screw bolt relative thereto,
• a smoothly arched extension bearing flange integrally formed to extend from at least one of said first and second lugs for supportingly guiding the displacement of said first and second end portions of said binding strap one relative to the other, a pair of reinforcing ribs extending peripherally along two side edges of said smoothly arched extension bearing flange.