This standard specifies a test method for determining the acceptance limits of surface discontinuities detected by liquid penetrant inspection, when such an inspection procedure has been contractually agreed upon at the request of the purchaser. It applies to all steel castings; whatever casting process is used.

• Year of Declaration: 1996
• Reference: ISO 4987:1992
• Number of Pages: 11
• Code: GYS 158
• Version:
• ICS Number: 77.040.20