Boyu Heavy Industry Awarded ASME "S" and "U" Stamp Certifications, Reinforcing World-Class Manufacturing Standards
2026/09/15
Shandong, China – August 2025 – Boyu Heavy Industry is pleased to announce that on 7 August 2025, the company was officially granted authorization by the American Society of Mechanical Engineers (ASME) to apply the prestigious "S" Stamp (Power Boilers) and "U" Stamp (Pressure Vessels) certification marks, alongside the associated Certificates of Authorization.
The successful acquisition of both stamps marks a major milestone in Boyu’s internationalization strategy, validating that the company’s engineering design, material procurement, fabrication processes, welding integrity, and quality assurance systems fully comply with the globally recognized ASME Boiler and Pressure Vessel Code (BPVC).
Scope of the ASME Authorizations
The certification provides full international qualification across two vital segments of Boyu’s core manufacturing portfolio:
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ASME "S" Stamp (ASME BPVC Section I): Authorizes the design, fabrication, and assembly of power boilers and high-pressure boiler parts, including water-cooled walls, superheaters, reheaters, economizers, and main steam headers.
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ASME "U" Stamp (ASME BPVC Section VIII, Div. 1): Authorizes the engineering and manufacture of unfired pressure vessels, including surface condensers, shell-and-tube heat exchangers, process vessels, and auxiliary thermal units for the power, petrochemical, and paper industries.
Global Quality Assurance & Full Traceability
To achieve ASME accreditation, Boyu underwent a comprehensive joint review conducted by an ASME Authorized Inspection Agency (AIA). The audit rigorously verified Boyu’s quality manual execution, technical documentation, material tracking, and non-destructive examination (NDE) procedures.
For our international clients and EPC partners, the ASME certification ensures:
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Unbroken Quality Traceability: Strict control over certified base materials, qualified Welding Procedure Specifications (WPS), Procedure Qualification Records (PQR), and certified welding operators.
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Independent Third-Party Verification: Independent oversight by certified Authorized Inspectors (AI) throughout fabrication and pressure testing stages.
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Standardized International Documentation: Seamless issuance of official ASME Manufacturer’s Data Reports (such as Form U-1 / U-1A) and comprehensive Manufacturing Data Books tailored to international project specifications.
Accelerating International Project Delivery
As energy developers and EPC contractors deliver high-capacity power plants and industrial energy infrastructure worldwide, compliance with ASME standards is frequently a mandatory prerequisite.
Securing the "S" and "U" stamps significantly enhances Boyu Heavy Industry's competitive advantage in overseas bidding, OEM supply partnerships, and turnkey EPC delivery. It provides global partners with complete confidence that every pressure vessel and boiler heating surface delivered from Boyu’s manufacturing base meets the highest benchmarks for operational safety, structural integrity, and long-term durability.
