Specifications: 1) Standards: ASTM A519, DIN 1629, DIN 1630 2) O.D.: 21.3 - 88.9mm 3) Wall: 2.3 - 15.5mm Inner packing: 1) Unprotected 2) Internal and external oiled 3) External varnished with black lacquer 4) If required, tubes can be delivered with plastic plugs or protectors Outer packing: 1) In hexagonal bundles wrapped with strong steel trip 2) Bundles up to: 4000kg (8800lbs) 3) Tubes under O.D. 60.3mm have technical details marked on tags tied to both sides of the bundle 4) Tubes above O.D. 60.3 are paint stenciled