Free API API-570 Exam Questions

Become API Certified with updated API-570 exam questions and correct answers

Page: 1 / 34

Total 170 Questions | Updated On: Oct 25, 2026

Add To Cart

Question 1

The three hardness tests normally used are the:

A : hindler, Johnson, Williams

B : ckwell, Vickes, Brinell

C : Rockwell, UT, Shearwave

D : inell, Vicky, Rockdale

Answer: B

Question 2

A local area has been thinned on the wall thickness of a flanged fitting. The fitting is NPS 8 Class 400, and the local area has been thinned to 0.400”. Is this corrosion acceptable per ASME B 16.5?

A :

B :

C : nnot be calculated from information given

D : ll thicknesses may not be less than that shown in B16.5

Answer: B

Question 3

Resistance to sulphidation is generally achieved by

A : grading to higher nickel alloys

B : grading to higher chromium alloys

C : grading to higher copper based alloys

D : l of the above.

Answer: B

Question 4

Steels with CE greater than 0.55% typically require:

A : eheating only

B : e-heating & PWHT

C : pre- heating or PWHT

D : HT only

Answer: B

Question 5

A combination of corrosion and erosion results in significantly greater metal loss that can be expected from corrosion or erosion alone. This type of loss occurs at

A : gh-velocity and high-turbulence areas

B : eas where condensation or exposure to wet hydrogen sulphide or carbonates occur

C : rface-to-air interfaces f buried piping

D : eas where gradual loss of material occurs because of a corrosive medium

Answer: A

Page: 1 / 34

Total 170 Questions | Updated On: Oct 25, 2026

Add To Cart