표준
DIN, ASTM, GB, API, bs, JIS
급료
A53(A,B), A106 (B 의 C), A335의 p5, API를 J55, API를 K55, API를 L80, 16Mn, 15MnV, 10 #, 10MoWVNb, 15CrMo, ST37, STPG42, 15Mo3, STPA25
Standard
JIS, DIN, ASTM, BS, API, GB
Grade
4140/4130/4340/BVD/A53(A,B), API J55,
Outer Diameter(Round)
21.3 - 219 mm
Place of Origin
Jiangsu,China