... pipe 1.high quality&competitive price 2.various surface treatment 3.machining as customers' requirements Anodized ... rolling, stamping, mouth-narrowing/broadening, hole/bore-making, surface-grinding, mouth-broadening, mouth-shrinking, bending,sharpening,and shaping ... machine, line cutting machine, shearing machine,etc. D. Surface treatment: Anodizing, powder coating, nickel plating, powder painting ...