1) Sizes (O.D. x T): from 6 x 1mm to 168 x 12mm

2) Standards: GB9948, JISG3441

3) Surface: oiled or black painted to prevent rust

4) Marking: as per customer's requirement

Commonly used steel grade:

10#, 20#, 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo, 09CrCuSb (ND-3), 09Cr2AlMoRe

Inner packing:

Caps on two ends of every pipe

Outer packing:

Hexagonal shape bundles wrapped with strong steel trip or according to customers' requests