S31254 Ss Blind Flange Corrosion Resistance Dual Phase Flange
Brand Name:EVEREST
Certification:lS09001,IS014001, ISO45001, (TS ) Grade A, PED2014/68/EU,AP1 5LC, API 5LD, ASME, CCS, LR, DNV , BVRINA and ABS.
Model Number:ASME SA-213/SA-213M ,ASME SA-312/SA-312M ,ASME SA-790/SA-790M ,ASME SA-789/SA-789M ,EN 10216-5 DIN 17458
Minimum Order Quantity:Negotiable
Delivery Time:Negotiable
Payment Terms:L/C, D/A, D/P, T/T
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Location:
Wuxi Jiangsu China
Address:
Room 1-501D, Baihe Business Plaza, Xishan District, Wuxi City, Jiangsu Province, China
Supplier`s last login times:
within 32 hours
Product Details
Company Profile
Product Details
S31254 Dual-phase Steel Flanges in Various Industries with Material for Secure Connections
Crafted from S31254 super duplex stainless steel (UNS S31254), these premium flanges are engineered to conquer the most aggressive chloride-rich and acidic environments, delivering unmatched performance in offshore oil & gas, seawater desalination, chemical processing, and pharmaceutical industries. With a PREN ≥43 (Pitting Resistance Equivalent Number), they offer superior resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC), even in high-temperature, high-pressure conditions up to 300°C (572°F).
Key Advantages
✅ Exceptional Corrosion Resistance:
High Molybdenum (6%) & Nitrogen (0.35%) Content: Defies chlorides, sulfuric acid, brine, and hypochlorite solutions, ideal for seawater cooling systems, bleach plants, and sour gas pipelines.
Zero Leak Guarantee: Precision-machined RTJ (Ring-Type Joint) or RF (Raised Face) surfaces ensure flawless sealing in critical applications.
✅ Ultra-High Strength & Durability:
Dual-Phase Microstructure (Austenite + Ferrite): Delivers 2x the yield strength of 316L steel (≥550 MPa) with excellent impact toughness for high-vibration, high-load environments.
Resists Erosion & Fatigue: Perfect for abrasive slurry transport, subsea umbilicals, and cyclic thermal stress scenarios.
✅ Cost-Efficient Lifespan:
Outlasts conventional duplex steels (e.g., S31803) and nickel alloys in chloride-rich media, slashing maintenance and replacement costs.
Operates reliably in -50°C to 300°C (-58°F to 572°F), ideal for Arctic pipelines and tropical offshore platforms.
✅ Global Compliance & Traceability:
Manufactured to ASTM A182, ASME B16.5, EN 1092-1, and NACE MR0175/ISO 15156 standards for sour service (H₂S environments).
Full MTC 3.1 material certification, ISO 9001/PED 2014/68/EU compliance, and third-party NDT (UT/PT) reports ensure quality.
✅ Customizable Solutions:
Types: Weld neck, slip-on, blind, threaded, and socket weld designs.
Sizes: DN15 to DN2000, with tailored pressure ratings (Class 150 to 2500), bore alignments, and surface finishes (electropolishing available).
Fast Delivery: Stock availability for standard sizes (DN15-DN600) with 10-day lead time on urgent orders.
Quality Inspection
Quality Management Department is establshed in the enterprise, which is responsible for the implementation of quallty management acrossall sectors, including QC, QA and implement and supervise various management system. The company reviews the Quality Manual byconducting management reviews annually to confirm its conformance, effectiveness and suitability.
HENGLI Petrochemical 40 million / year ton of oil refining integration project | ZHEJIANG Petrochemical 40 million / year ton of oil refining integration project | LIANYUNGANG Petrochemical 3.2 million tons / young hydrocarbon comprehensive | YISHENG New Material The 6.6 million tons / year of the PTA project | CNOOC Huizhou Refining & Chemical Co Huilian Phase II, 22 million / year ton of oil refining Reconstruction and expansion project | Sinopec Zhenhai Refining & Chemical Company 1.2 million / year ton ethylene renovation and expansion project | Wanhua Chemical 480,000 tons / year bisphenol A integration project | GUANGXI Huayi New Materials Integration project of new chemical materials | CNOOC Shell The SMPO & POD project | China AtlantoShaanxi Coal Chemical Industry: 1.8 million tons / year ethylene glycol project |
| Hainan Huasheng 2.26 million tons / year non-photogamic polycarbonate project | Shenghong Refining The 16 million tons / year oil refining project | Anhui Haoyuan Chemical Industry 300,000 tons / year ethylene glycol project | Heilongjiang Longyou Petrochemical Company5.5 million tons / year heavy oil catalytic pyrolysis project | HuaLu Hengsheng 500,000 tons / year ethylene glycol project | Baofeng Energy600,000 tons / year methanol to olefin project | Jiangnan Shipyard (98000m³ liquefied ethane ship, etc.) Brand number: 316 / 316L, delivery time: 2020.12 | Keppel shipyard in Singapore (FLNG ship) Brand number: 316 / 316L, delivery time: 2020.1 | Guangzhou Wenchong Shipyard (Super double-phase steel
desulfurization tower) Brand number: S32750 Delivery time: 2021.3 | CSSC Dalian (FPSO, MV31, etc.) Brand number: 316L, etc., delivery date, 2019.8 |
| 725 Institute of China Shipbuilding Industry (Cu-Ni alloy Tube) | Nantong COCSO Shipyard (FSRU ship module) | CIMC Raffles (Drilling Rig) | CNOOC Orient 13-2 (Lined pipe) | CNOOC Bozhong 19-6 (Lined Pipe) | Petrobras MODEC FPSO (COSCO Shipping) | CNOOC Guangxi LNG, storage and transportation storage Brand number: 304 / 304L | CNOOC Zhejiang LNG Phase II Brand number: 304 / 304L | Sinopec Shandong LNG Phase II Brand number: 304 / 304L | LIANYUNGANG Petrochemical A 4X160000m³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 813X12.7MM Delivery time: 2020.9 |
| Sinopec Luoyang Institute Wenzhou LNG terminal Brand number: 304 / 304L Specification: 219.1~711X12.7MM Delivery time: 2022.3 | Huatai Shengfu 160,000 m ³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 219~508X9.53MM | YAMAL LNG Brand number: 304 / 304L Specification: 406~914X9.53MM | Beijing Maiden Voyage | Oriental Hope | Sichuan Yongxiang 70,000 tons / year high purity polysilicon project | Xinjiang Daquan 25,000 tons / year high purity polysilicon project | Eagle Central China Paper Industry 500,000 tons of box board project | Guangxi Sun Paper 3.5 million tons of forest pulp and paper integration project | APP for Asian pulp and paper Chemical machine pulp and sewage treatment project |
TCL Shenzhen Huaxing Optoelectronics semiconductor clean pipeline project | Beijing Daxing Airport | Hong Kong-Zhuhai-Macau/Macao Bridge Tubes used for stainless steel construction | CNNC Xiapu nuclear Power Plant Fast reactor demonstration project of CNNC 2.3 | CONBA Stainless steel pipe for pharmaceutical engineering | Shenghong Refining Stainless steel associated heat pipe | Hangzhou Sewage Treatment Plant Stainless steel pipe for backwash purification unit | Qilu Pharmaceutical Fluid stainless steel pipe for raw material delivery | Zijin Mining Wet copper smelting, stainless steel sewage pipe | ect |
| …… |
Certificate
| API-5LD AUTHENTICATION | American Petroleum Institute API 5LC Certificate | ASME Certificate in the United States | EU PED&AD2000 certificate | ABS classification society certification certificate in the United States | DNV Det Norske Veritas Certificate | RINA Italian Bureau of Shipping Certificate | BV French Bureau of Shipping certification | LR Lloyd's Register Certificate of Approval | Customs Union EAC Certificate | Russian GOST certificate |
| Raw Material Vendors | Cooperation Partners |
Why Choose S31254 Flanges?
Risk-Free Procurement: 100% dimensional inspection and PMI (Positive Material Identification) testing.
Technical Expertise: Free corrosion compatibility analysis, welding procedure specifications (WPS), and installation guidance.
Sustainability: 100% recyclable material with extended lifecycle, reducing environmental footprint.
S31254 Ss Blind Flange Corrosion Resistance Dual Phase Flange
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