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Non-standard Flange
SDFL
Engineered to bridge the technical gap between ASME and JIS standards, these custom flanges serve as critical connectors in global pipeline networks. Designed with precision to tackle the challenges of high-pressure operations (up to Class 2500/63K) and corrosive environments (including acidic, saline, and chemical-rich settings), they eliminate compatibility issues in cross-border projects. Whether integrating North American ASME systems with Asian JIS infrastructure or upgrading existing pipelines, these flanges ensure leak-free performance in industries spanning oil & gas exploration, chemical processing plants, and thermal power generation facilities.
Parameter | ASME Standard (B16.5) | JIS Standard (B2220) |
Pressure Rating | Class 150–2500 (1.0–42.0 MPa) | 5K–63K (0.5–6.3 MPa) |
Material | Carbon steel (A105), Stainless steel (F304/F316 with 18-8/18-10 chromium-nickel composition) | Carbon steel (S25C), Stainless steel (SUS304 with 18% chromium content) |
Seal Types | Raised Face (RF), Ring Joint (RJ) for high-pressure, Flat Face (FF) optional | Flat Face (FF), Raised Face (RF), Tongue & Groove (TG) for enhanced sealing |
Size Range | NPS 1/2"–24" (DN15–DN600) | DN15–DN600 (NPS 1/2"–24") |
Dual Standard Compliance: Merges ASME’s robust pressure handling capabilities (critical for Class 900+ applications) with JIS’s precision machining standards (ensuring tight dimensional control for metric pipe systems), enabling interchangeable installations across continents.
Corrosion Resistance: Premium stainless steel grades (F304/F316) feature passive oxide layers that withstand aggressive chemicals, saltwater immersion, and industrial fumes, extending service life by 50% compared to carbon steel alternatives in harsh environments.
Customizable Design: Tailored to project-specific needs, including non-standard sizes (e.g., NPS 26" for large-diameter pipelines), special coatings (epoxy, zinc plating for rust prevention), or thin-walled configurations (JIS 10K thin-type for weight-sensitive applications like offshore platforms).
Precision Tolerances: ASME B16.5 enforces ±1.6mm outer diameter tolerance for flanges ≤610mm, while JIS B2220 maintains stricter ±0.8mm tolerance on critical sealing surfaces, ensuring uniform gasket compression and minimizing leakage risks.
Offshore Platforms: High-strength ASME Class 600 flanges with Ring Joint (RJ) seals endure subsea pipeline conditions, resisting high hydrostatic pressure (up to 10 MPa) and salt spray corrosion in deepwater drilling operations.
Chemical Plants: JIS 16K flanges crafted from corrosion-resistant SUS304 stainless steel safely handle acid transfer lines (including sulfuric acid and hydrochloric acid) with pH levels as low as 2.
Power Generation: Customized ring joint (RJ) sealed flanges support steam systems operating at 500°C+, maintaining integrity in high-temperature boiler feedwater and condensate pipelines.
Q: Can these flanges be used in cryogenic applications?
A: Yes. For low-temperature stability (down to -196°C, typical in LNG transport), select F316L stainless steel (low-carbon variant) and specify JIS 20K/30K pressure grades, which undergo cryogenic testing to ensure no brittle fracture.
Q: What certifications are available?
A: Comprehensive certification options include ASME BPVC Section VIII (pressure vessel compliance), PED 2014/68/EU (European pressure equipment safety), and TR CU 032/2013 for EAC-marked projects in Russia and Eurasian Economic Union countries.
Q: How to ensure proper alignment during installation?
A: All flanges include precision-machined bolt holes with ±0.5mm positional tolerance, compatible with both ASME B18.2.1 (inch bolts) and JIS B1180 (metric bolts) for seamless alignment.
Engineered to bridge the technical gap between ASME and JIS standards, these custom flanges serve as critical connectors in global pipeline networks. Designed with precision to tackle the challenges of high-pressure operations (up to Class 2500/63K) and corrosive environments (including acidic, saline, and chemical-rich settings), they eliminate compatibility issues in cross-border projects. Whether integrating North American ASME systems with Asian JIS infrastructure or upgrading existing pipelines, these flanges ensure leak-free performance in industries spanning oil & gas exploration, chemical processing plants, and thermal power generation facilities.
Parameter | ASME Standard (B16.5) | JIS Standard (B2220) |
Pressure Rating | Class 150–2500 (1.0–42.0 MPa) | 5K–63K (0.5–6.3 MPa) |
Material | Carbon steel (A105), Stainless steel (F304/F316 with 18-8/18-10 chromium-nickel composition) | Carbon steel (S25C), Stainless steel (SUS304 with 18% chromium content) |
Seal Types | Raised Face (RF), Ring Joint (RJ) for high-pressure, Flat Face (FF) optional | Flat Face (FF), Raised Face (RF), Tongue & Groove (TG) for enhanced sealing |
Size Range | NPS 1/2"–24" (DN15–DN600) | DN15–DN600 (NPS 1/2"–24") |
Dual Standard Compliance: Merges ASME’s robust pressure handling capabilities (critical for Class 900+ applications) with JIS’s precision machining standards (ensuring tight dimensional control for metric pipe systems), enabling interchangeable installations across continents.
Corrosion Resistance: Premium stainless steel grades (F304/F316) feature passive oxide layers that withstand aggressive chemicals, saltwater immersion, and industrial fumes, extending service life by 50% compared to carbon steel alternatives in harsh environments.
Customizable Design: Tailored to project-specific needs, including non-standard sizes (e.g., NPS 26" for large-diameter pipelines), special coatings (epoxy, zinc plating for rust prevention), or thin-walled configurations (JIS 10K thin-type for weight-sensitive applications like offshore platforms).
Precision Tolerances: ASME B16.5 enforces ±1.6mm outer diameter tolerance for flanges ≤610mm, while JIS B2220 maintains stricter ±0.8mm tolerance on critical sealing surfaces, ensuring uniform gasket compression and minimizing leakage risks.
Offshore Platforms: High-strength ASME Class 600 flanges with Ring Joint (RJ) seals endure subsea pipeline conditions, resisting high hydrostatic pressure (up to 10 MPa) and salt spray corrosion in deepwater drilling operations.
Chemical Plants: JIS 16K flanges crafted from corrosion-resistant SUS304 stainless steel safely handle acid transfer lines (including sulfuric acid and hydrochloric acid) with pH levels as low as 2.
Power Generation: Customized ring joint (RJ) sealed flanges support steam systems operating at 500°C+, maintaining integrity in high-temperature boiler feedwater and condensate pipelines.
Q: Can these flanges be used in cryogenic applications?
A: Yes. For low-temperature stability (down to -196°C, typical in LNG transport), select F316L stainless steel (low-carbon variant) and specify JIS 20K/30K pressure grades, which undergo cryogenic testing to ensure no brittle fracture.
Q: What certifications are available?
A: Comprehensive certification options include ASME BPVC Section VIII (pressure vessel compliance), PED 2014/68/EU (European pressure equipment safety), and TR CU 032/2013 for EAC-marked projects in Russia and Eurasian Economic Union countries.
Q: How to ensure proper alignment during installation?
A: All flanges include precision-machined bolt holes with ±0.5mm positional tolerance, compatible with both ASME B18.2.1 (inch bolts) and JIS B1180 (metric bolts) for seamless alignment.
