生产壁厚等级:弯头，无缝弯头，冲压弯头，热压弯头，高压弯头，Sch5s弯头.Sch10s弯头.Sch40s弯头.Sch80s弯头.Sch10弯头.Sch20弯头.Sch30弯头.Sch40弯头.Sch60弯头Sch80弯头.Sch100弯头.Sch120弯头.Sch140弯头.Sch160弯头.STD弯头.XS弯头.XXS弯头.90度弯头.45度弯头.180度弯头.1D弯头.1.5D弯头.2D弯头
