Specifications:1) Sizes: 14 x 14mm to 100 x 100mm2) Standards: GB/T 10, 20, 35, 45# 16Mn3) Surface: oiled or black painted to prevent rust4) Marking: as per customer's requirementInner packing:Caps on two ends of every pipeOuter packing:In hexagonal shape bundles wrapped with strong steel trip2MT/bundle