Stainless Steel Pipes Supplier for Saudi Aramco — SAES-L-140 Compliant

Saudi Aramco Engineering Standard SAES-L-140 defines stainless steel piping material selection across all Aramco facilities. TP304L covers utility and demineralized water service where chloride levels are low. TP316L is the dominant specification for Aramco process piping in chloride-bearing environments — its 2–3% molybdenum content raises the Pitting Resistance Equivalent Number (PREN) to approximately 24, giving reliable service in seawater cooling headers and hydrocarbon condensate lines. Where operating temperature exceeds 400°C, SAES-L-140 calls for stabilized grades: TP321 (titanium-stabilized) for general high-temperature service, and TP347 (niobium-stabilized) for reformer headers and creep-limited service. For produced-water and sour-gas applications at GOSPs, SAES-A-007 requires duplex 2205 (S31803, PREN ≈35) or super duplex 2507 (S32750, PREN ≥42) when chloride or H₂S severity exceeds austenitic 316L capability. All grades must comply with SAMSS-001 procurement requirements and be supplied with SAEP-347 Annex 4 material numbers documented in the order package.

Saudi Aramco Engineering Procedure SAEP-347 Annex 4 assigns unique material numbers to every stainless steel pipe specification used in Aramco procurement and Goods Receipt. Suppliers must reference the correct SAEP-347 Annex 4 material number on purchase order documentation to facilitate smooth GR acceptance. In addition to the SAEP-347 material number, Saudi Aramco General Instruction GI-0002.100 requires Positive Material Identification (PMI) testing by XRF for all austenitic stainless steel (grades 304L, 316L, 321, 347) and duplex stainless steel (grades 2205, 2507) pipe. The PMI XRF certificate must reference the heat number from the EN 10204 3.1 mill test certificate and confirm that measured alloy composition meets the ASTM grade requirements. Gulf Union Ozone provides both the EN 10204 3.1 MTC and a laboratory-issued PMI XRF certificate with every stainless pipe delivery for Aramco, eliminating GR delays caused by missing documentation. Our order acknowledgement and packing list explicitly cite the relevant SAEP-347 Annex 4 material number.

Grade selection between duplex 2205 and austenitic 316L for Saudi Aramco GOSP produced-water service depends on three primary factors: chloride concentration, H₂S partial pressure, and operating temperature. Austenitic TP316L performs reliably in moderate-chloride service below 5,000 ppm chloride and below 60°C with negligible H₂S — acceptable for GOSP utility water and low-severity process headers. When produced water contains elevated chlorides above threshold, dissolved H₂S, or elevated temperatures, SAES-A-007 requires duplex 2205 (UNS S31803, ASTM A790) which delivers a Pitting Resistance Equivalent Number (PREN) of approximately 35 and superior resistance to chloride stress corrosion cracking. For offshore seawater injection and SWCC MSF plant service, super duplex 2507 (UNS S32750, PREN ≥42) is specified because its higher chromium, molybdenum, and nitrogen content withstands hot seawater pitting that duplex 2205 cannot reliably resist. Both duplex grades require NACE MR0175 / ISO 15156 compliance documentation for Aramco sour service acceptance.

Gulf Union Ozone delivers stainless steel pipe to Saudi Aramco contractors across Saudi Arabia from Jeddah stock: same-day collection or local dispatch, 48 hours to Jubail, Dammam, and Khobar in the Eastern Province, and 72 hours to Riyadh. Every stainless pipe shipment includes the EN 10204 3.1 mill test certificate issued by the manufacturer's independent quality representative, referencing the heat number marked on each pipe length. For Aramco GR acceptance, we additionally provide the PMI XRF test certificate required by GI-0002.100, the SAEP-347 Annex 4 material number on the order documentation, and — for duplex and super duplex grades — the NACE MR0175 / ISO 15156 sour service compliance certificate. Gulf Union Ozone Trading Co. is a Saudi-registered company (CR 4030570569) and active supplier in the Aramco 9.com / Ariba procurement platform, enabling direct PO processing with compliant documentation for smooth Goods Receipt.