Oxygen cylinders used for autogenous (cutting/welding) purposes are – McqOptions

MCQOPTIONS

1.	Oxygen cylinders used for autogenous (cutting/welding) purposes are
A.	seamless & made of steel.
B.	heat treated before use.
C.	made by sand casting.
D.	welded steel cylinders.
Answer» B. heat treated before use.

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