Product Name: Seamless Carbon Steel Pipes for High-Temperature ServicePlace of Origin: ChinaFeatures: 1) In NPS 1/8 to NPS 6 or 10.3mm to 168.3mm in outside diameter and 1mm to 12.5mm in wall thickness 2) The grades are A and B 3) The quality of them is in conformity with the requirements of ASTM A106