A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders
Correct Answer: Seamless & made of steel ✔
Last Updated: February 08, 2019
A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders
Correct Answer: Seamless & made of steel ✔
Last Updated: February 08, 2019