Material: Steel

Specification: Max, 10000mm

O.D: 100-1500mm

Surface roughness: 1.6

Precision(mm): 0.1

Flaw detection: SEP 1921

Grain Size: ASTM E-112

Coaxial tolerance(mm): 0.08

Forging ratio: Min,3

Certificate: ISO 9001:2000

Standard: ASTM, EN, DIN, JIS, etc.