Specifications I. Product Specifications 1. Round pipe diameter range: Φ89mm-273mm wall thickness :3mm-10mm 2.Square and rectangle tube : 80*80mm-200*200mm wall thickness range 3-10mm 3.Tube and pipe length: 4-12m II. Material Specifications: Low carbon steel and low alloy steel: δb≤550Mpa, δs≤235Mpa