Stainless pipe fitting,stainless fitting,duplex stainless,31803,32750,32760,we are one of largest sour service stainless fitting supplier according to ISO 10156.
Recently, C&N custom-produced ASTM A815 WP S32205 duplex stainless steel tee fittings for a client in Dammam, Saudi Arabia. After completing all factory inspections and professional packaging, the fittings were successfully shipped by sea to the designated port. These butt-weld tees, which comply with ASME B16.9 standards, were specially designed for the region’s demanding petrochemical and energy pipeline systems. The entire process, from precise order management to high-quality delivery, showcases efficient collaboration and marks a new stage in the partnership between both parties in the high-end pipeline fittings sector.
Key Processes and Inspection: The product undergoes rigorous PMI (Positive Material Identification) spectroscopic testing to ensure that crucial alloy elements (Cr, Ni, Mo, etc.) fully meet the standards, guaranteeing the authenticity and uniformity of the material.
Application Areas: Pipeline systems for transporting highly corrosive media in the petrochemical, chemical, and energy industries.
Quality Control and Inspection System
C&N enforces a rigorous, product-specific quality assurance protocol to guarantee the absolute reliability of every duplex stainless steel tee fitting in demanding service environments. Our system is built on full traceability, beginning with the verification of all incoming duplex stainless steel raw materials. Each batch of billets or plates is subjected to documented PMI (Positive Material Identification) analysis against its mill certificates, ensuring compliance of key alloying elements (Cr, Ni, Mo, N) with the ASTM A815/A815M UNS S32205 specification.
The manufacturing focus is on preserving the critical austenite-ferrite phase balance. The solution annealing heat treatment cycle is precisely controlled and recorded to achieve the optimal microstructure, thereby ensuring the superior corrosion resistance and mechanical strength intrinsic to duplex stainless steel.
Technical Documentation and Certification Support
C&N provides a complete and compliant technical documentation package for each batch of exported duplex stainless steel fittings, ensuring the products are smoothly applied in high-end global projects and meet the audit and traceability requirements of end users.
Key deliverables include:
Material Test Certificate (MTC) in accordance with EN 10204 3.1: Clearly indicating the product as “ASTM A815/A815M WP S32205 (2205)” and listing the actual chemical composition, mechanical test results, and heat treatment status, signed by an independent authorized representative.
Non-Destructive Testing (NDT) Reports: such as PT and RT reports, issued by certified personnel.
Dimensional Inspection Report: Certifying that the product meets the dimensional tolerance requirements of ASME B16.9.
Certificate of Origin, Commercial Invoice, Packing List, and Bill of Lading: a full set of customs and logistics documents.
Product Identification and Traceability Documents: Ensuring the product stamp (including standard number, material grade, heat number, etc.) corresponds fully with all documentation, enabling complete lifecycle traceability.