The tubes is suitable for making high-pressure heaters in thermal power plant. Specification: OD.: 16~25mm WT.: 1.5~3mm Executive standard: Q/HYAH11-94I Steel Grade: SA201A1, SA106B Mechanical properties: Tensile strengh: 420~530Mpa, Yield point :≥260MPa, Elongation: ≥28% Origin China Material Carbon steel Packaging Nude packing, bundled with steel strips. Minimum order 5Mt Supply ability 10000Mt/ per year