... A: Pipe and tube Size Range:1) Round pipe diameter: 8mm-3000mm, thickness: 0.4-60.0mm2) Square tube: 10 x 10mm ... : black, blank, bright and galvanized, or painted C: Length of each pipe: 500mm-16,000mm D: Steel grade: 10#, 20#, A106B, A53B ... with our professional information, top quality products, best price, and efficient services. For all details, please don't hesitate to contact us. steel pipe and ...