Stainless Pipe Flanges
Product Overview
Stainless Pipe Flanges are forged or cast components used to connect piping sections, valves, and equipment in corrosive or high-pressure piping systems.
Technical Specifications
|
Category |
Parameter |
Specification |
|
Standard & Type |
Manufacturing Standard |
ASME B16.5 |
|
Flange Type |
Slip-On (SO) |
|
|
Size |
Nominal Pipe Size |
2" (DN50) |
|
Pressure Class |
Class 150 |
|
|
Outside Diameter (O) |
152.4 mm / 6.00" |
|
|
Thickness (tf) |
19.1 mm / 0.75" |
|
|
Bore (B) |
61.2 mm / 2.41" |
|
|
Hub Length (Y) |
25.4 mm / 1.00" |
|
|
Facing |
Type |
Raised Face (RF) |
|
RF Diameter |
92.1 mm / 3.62" |
|
|
Surface Finish |
Ra 3.2–6.3 μm |
|
|
Bolting |
Number of Holes |
4 |
|
Bolt Hole Diameter |
19.1 mm / 0.75" |
|
|
Bolt Circle Diameter (PCD) |
120.7 mm / 4.75" |
|
|
Material |
Grade |
ASTM A182 F304 |
|
Tensile Strength |
≥ 515 MPa |
|
|
Yield Strength |
≥ 205 MPa |
|
|
Inspection |
Testing |
Visual, Dimensional, PMI |
Manufacturing Capabilities
Manufacturing Capabilities
PMI verification of steel billets before cutting.
Forging
Hot forging and ring rolling used to form and refine grain structure.
Heat Treatment
Solution annealing performed according to material requirements to reduce carbide precipitation risk.
CNC Machining
Multi-axis CNC turning and drilling for sealing faces and bolt holes.
Surface Treatment
Pickling, passivation, or shot blasting for scale and oxide removal.
Final Inspection & Packaging
Dimensional inspection, marking, and corrosion-protection packaging.
Quality Assurance & Traceability
Raw Material Purity Check: Spectral analysis is used to verify chromium content above 18% for corrosion resistance requirements.
Dimensional Precision Control: CNC inspection ensures bore tolerance within 0.8 mm in accordance with ASME requirements.
Flange Face Roughness Verification: Stylus profilometer testing confirms Ra 3.2–6.3 μm surface finish for gasket seating.
Microstructure Stability Testing: ASTM A262 testing is applied to evaluate intergranular corrosion susceptibility.
Material Batch Verification: Each steel heat is verified against Mill Test Certificates before production.
Heat-Code Stamping: Each finished Stainless Pipe Flanges unit is permanently stamped for batch traceability.
Digital Archival System: Inspection and test records are stored for up to ten years for traceability.
Industry Compliance & Certifications
|
Certification / Standard |
Proof of Compliance & Authority |
|
ISO 9001:2015 |
Quality management system certification |
|
PED 2014/68/EU (Annex I, Sec. 4.3) |
EU pressure equipment safety compliance |
|
CRN (Canadian Registration Number) |
Approved for use in Canadian pressure systems |
|
EN 10204 Type 3.1 / 3.2 |
Material traceability with MTC verification |
|
API 6A / 6D Compliance |
Suitable for oil & gas high-pressure applications |
Applications
|
Application Field |
Typical Use |
|
Chemical Processing |
Connecting reactor piping and valve networks |
|
Oil & Gas Refineries |
Joining high-pressure transmission pipelines |
|
Water Treatment |
Assembling desalination and filtration systems |
|
Power Generation |
Linking high-temperature steam lines |
|
Marine Engineering |
Connecting seawater cooling systems onboard |
|
Food & Beverage |
Coupling sanitary process piping |
Packaging & Logistics Control
Flange Face Protection
Plastic covers are used to protect sealing surfaces during handling and transport.
01
Fumigation-Free Cases
Products are packed in plywood cases or pallets compliant with export requirements.
02
Moisture-Proof Barrier
Internal plastic wrapping is used to reduce exposure to humidity and salt.
03
Clear Shipping Marks
Crates are labeled with specification, quantity, weight, and heat numbers.
04
Secure Internal Stacking
Layered packing reduces movement and metal-to-metal contact during transport.
05
FAQ
Q: Can you provide third-party inspection reports like SGS or TÜV before shipping?
A: Third-party inspection (SGS, TÜV, BV) can be arranged before shipment if required.
Q: Do you support custom marking or laser engraving?
A: Custom stamping or laser marking can be provided according to purchase requirements.
Q: What is your MOQ for non-standard dimensions?
A: MOQ depends on material grade and production batch size for non-standard dimensions.
Q: How do you prevent mixing of grades like 304 and 304L?
A: PMI testing is applied before final packaging to verify chemical composition.
Q: Can you handle urgent delivery orders?
A: Semi-finished inventory is used to support faster production for urgent orders.
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