Alloy No.: C23000, C26000, C26200, C27000, C27200, C28000Standard: GB, ASTM, EN, DIN, JIS, etc.1.Precise dimension2.Smooth, clean, bright on both outer and inner surfaces3.Excellent mechanical and physical properties4.Chemical composition strictly conform to relevant standards5.Free from defects such as blowholes, cracks, pin hole leaks, etc.