Nirmal Industrial Controls Purchase Engineer Interview Questions and Answers

SS 304 and SS 316 are both austenitic stainless steels, but with different compositions and properties.

• SS 304 contains 18% chromium and 8% nickel, while SS 316 contains 16% chromium, 10% nickel, and 2% molybdenum.

• SS 316 is more corrosion-resistant than SS 304, especially in chloride environments.

• SS 316 is more expensive than SS 304.

• SS 304 is commonly used in food processing equipment, while SS 316 is used in marine and

Dimensional standards for flanges and pipe fittings

• Flanges and fittings are manufactured according to various dimensional standards such as ASME, DIN, JIS, etc.

• These standards specify the dimensions, tolerances, and materials for flanges and fittings.

• For example, ASME B16.5 is a widely used standard for flanges in the United States.

• It is important to select the correct standard for the application to ensure proper fit ...read more