Marks Brothers’ Quality program operates in accordance with the requirements of the National Board and the American Society of Mechanical Engineers. Under this program we maintain the following certifications to stamp and certify pressure vessels, boilers, piping and pressure parts in alignment with the Code.
Certificates
ASME “U” Stamp | Expiration Date May 31, 2025
Authorization by ASME to manufacture pressure vessels in accordance with the applicable rules of the ASME Boiler and Pressure Vessel Code.
ASME “S” Stamp | Expiration Date May 31, 2025
Authorization by ASME to manufacture power boilers in accordance with the applicable rules of the ASME Boiler and Pressure Vessel Code.
ASME “H” Stamp | Expiration Date May 31, 2025
Authorization by ASME to manufacture heating boilers in accordance with the applicable rules of the ASME Boiler and Pressure Vessel Code.
National Board “R” Stamp | Expiration Date May 31, 2025
Authorization by the National Board to make metallic repairs and alterations to pressure vessels.
National Board “NB” Stamp | Expiration Date May 31, 2025
Authorization for Marks Brothers to register boilers, pressure vessels or other pressure retaining items with the National Board in accordance with its provisions.
Codes and Standards
MBI’s quality systems provide manufacturing control in accordance with the following Codes and Standards:
ABSA
ANSI/ASME N45.2
A.P.I. 650, 620
ASME Section I
ASME Section II
ASME Section V
ASME Section VIII Div. 1
ASME Section IX
ASME Piping Codes (B31.1 & B31.3)
ASME NQA-1-1994 (NQA-1a-1995 Add.)
ASME NQA-1-2000
ASME NQA-1-2008 (NQA-1a-2009 Add, NQA1b-2011 Add.)
AWS D1.1, D1.6
NRC Regulatory Guide 1.28
P.E.D.
TEMA
10 CFR, Part 21
10 CFR, Part 50, App. B
Client-Specific
