1: Made of centrifugal casting and sand casting;
2: Material: MORE2, MORE1B, NA22H, SUPPER22H, HK40, SCH22, SCH21, DCH27 etc;
3: Dimension: O.D of 194mm, 196mm, 200mm, 190mm, 184mm, 172mm, 162mm, 152mm etc, with thickness of 7mm, 8mm, 8.5mm, 9mm etc;
4: Inspection:
a: chemical composition test by spectrometer during smelting and mechanical properties test;
b: sand blasting to clean the coating after pouring;
c: leveling;
d: cut both ends to do etching test;
e: air tight test and hydrostatic test;
f:; PT test and visual checking;
g: groove PT test;
h: creep enduring test and mechanical property test
i: endoscopic test
J: sand blasting and package, ready for delivery;
