按DL/T515《電站彎管》、SY5257《鋼制彎管》執行，或按顧客提出的標準或技術要求執行
According to DL/T515《Electric Station Bends》Sy5257《Steel Bends》or the standards and specifications required by purchaser
R≤6000mm，且R≥3D（用R等于3D、4D、5D、6D、7D、8D、9D、10D來表示彎曲半徑，D為管子外徑）
R≤6000mm and R≥3D(Radius of Bend are shown by R With 3D, 4D, 5D, 6D, 7D, 8D, 9D,10D, D is Outside Diameter of pipe)
彎曲角度θ
Angle of Bend
常用為15°、30°、45°、60°、90°、135°、和180°，也可按顧客提出的角度彎制
Usual angle is 15°、30°、45°、60°、90°、135°and 180°, oraccording to the requirements of purchaser
直段長度L
Length of Straight
彎管兩端直段長度一般在500mm--1500mm，由顧客確定長度的大小
The lengths of straight at the two ends are usually 500mm--1500mm, of according to the purchaser's option
外徑D
Outside Diameter
D≤1220mm
壁厚T
Wall Thickness
T≤120mm
端部坡口
End Bevel
按對焊管件焊端坡口結構型式執行
According to the end devel of butt-welding Fittings.
