heavy pipe clamp size:6mm OD--168mm OD material:PP,PA,Aluminium,Stainless Steel, Carbon Steel ISO9001:2000 heavy pipe clamp 1) Material:PP, PA, Aluminium, Stainless Steel, Carbon Steel2) Size:6mmOD--168mmO.D.3)Structure:hex bolts, cover plate, clamp body, shock-proof gasket4) High quality but favorable price