New NCPWB Technical Bulletin Explores ASME PCC-1 Guidelines for Pressure Boundary Bolted Joint Assembly

January 26, 2026
Photo courtesy of Southland Industries.

The National Certified Pipe Welding Bureau (NCPWB) has released a new Technical Bulletin that delves into ASME standard PCC-1, Guidelines for Pressure Boundary Bolted Joint Assembly. The bulletin explains what PCC-1 is, and shares lessons learned to help contractors maximize the probability of a leak-free joint. The bulletin also includes requirements for an industry standard certification program for bolted joint assemblers and a troubleshooting guide to assist should a leak occur.

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