标准
中国DIN标准, ASTM, 国标, API, bs, JIS
材质
A53(A,B), A106(B,C), A335 P5, API J55, API K55, API L80, 16Mn, 15MnV, 10#, 10MoWVNb, 15CrMo, ST37, STPG42, 15Mo3, STPA25
product name
Square steel
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