Stainless Steel Flanged Pipe Fittings
Stainless Steel Flanged Pipe Fittings suppliers
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Stainless Steel Flanged Pipe Fittings suppliers
Stainless Steel Flanged Pipe Fittings
Product Overview
Stainless Steel Flanged Pipe Fittings are used in piping systems where connection, directional change, or end sealing is required through bolted flange assemblies in accordance with ASME pressure piping standards.
Technical Specifications
|
Category |
Parameter |
Options / Range |
Key Acceptance Requirements |
|
Material |
Stainless / Alloy Grade |
ASTM A182 304 / 304L / 316 / 316L / 321 / 347 / Duplex F51 |
Material supplied with EN 10204 3.1 MTC, verified against ASTM A182 |
|
Pressure Rating |
Class |
150 / 300 / 600 / 900 / 1500 / 2500 |
Hydrostatic testing performed in accordance with ASME B16.5 |
|
Size |
NPS |
1/2" – 24" |
Dimensional inspection per ASME B16.5 / B16.9 |
|
Wall Thickness |
Schedule |
Sch 10S / 40S / 80S |
Thickness deviation controlled within -12.5% of nominal |
|
Flange Facing |
RF / FF / RTJ |
RF / FF / RTJ |
RF raised face height inspected at ±0.8 mm |
|
Flange Dimensions |
NPS-based standard sizes |
NPS standard |
Thickness tolerance +3.2 mm (≤NPS18), +4.8 mm (≥NPS20) |
|
Bolt Pattern |
Bolt Holes / BCD |
ASME standard layout |
Bolt hole position verified ≤ 1.6 mm deviation |
|
Fittings Type |
Elbow / Tee / Reducer |
Standard fitting types |
Center-to-face dimensions inspected ±1.6–2.4 mm |
|
Connection Type |
WN / SO / SW / LJ |
ASME flange types |
Face alignment controlled within ±0.8 mm |
|
Design Standard |
ASME B16.5 / B16.9 |
Code compliance basis |
Dimensional and pressure compliance per applicable ASME code |
|
Heat Treatment |
Solution annealed ≥1040°C |
Controlled process |
Corrosion resistance verified by ASTM A262 testing |
|
Surface Finish |
Pickled / Passivated / Blasted |
Standard surface treatment |
Surface condition inspected per MSS SP-55 acceptance criteria |
Compliance & Certifications
|
Category |
Standard |
Purpose |
|
Quality System |
ISO 9001:2015 |
Manufacturing quality system certification |
|
EU Pressure Equipment |
PED 2014/68/EU |
Applicable for pressure equipment in EU jurisdictions |
|
Material Traceability |
EN 10204 3.1 / 3.2 |
Heat number traceability from raw material to shipment |
|
EHS System |
ISO 14001 / ISO 45001 |
Environmental and occupational safety management |
|
Canada Approval |
CRN (CSA B51) |
Regulatory compliance for Canadian provinces |
|
Fire Safety Testing |
API 607 / ISO 10497 |
Fire-safe performance testing where applicable |
|
Marine Certification |
ABS / DNV / LR / BV |
Offshore and marine classification approval |
|
Chemical Compliance |
RoHS / REACH |
Restricted substance compliance declaration |
Custom Engineering & OEM Capabilities
Custom machining based on client drawings or scanned components
Supply of non-standard or dual-certified stainless steel grades upon request
NDT inspection including RT, UT, MPI, DPI according to project specification
Laser marking or stamping of identification codes and client logos
Export packaging designed for seaworthy transport conditions
Manufacturing & Capacity
CNC machining for flange face finishing and dimensional control
Heat treatment using automated solution annealing furnaces with recorded temperature cycles
Welding and fabrication using TIG and plasma arc processes where applicable
Raw material stock management for stainless steel bar and forging inventory
Quality Control & Testing
PMI verification performed using spectrochemical analysis for alloy confirmation
Hydrostatic pressure test conducted at 1.5× design pressure for sealing verification
Ultrasonic testing applied for detection of internal discontinuities in forgings
Flange surface roughness measured and controlled within Ra ≤ 3.2 μm
ASTM A262 corrosion testing used for sensitization and intergranular corrosion evaluation
FAQ
Q: Do you provide raw material mill test certificates with the shipment?
A: EN 10204 Type 3.1 mill test certificates, including heat number and chemical composition, are supplied with each shipment.
Q: Can you machine custom flange face finishes like concentric serrations?
A: Flange face serrations (spiral or concentric) can be machined within 125–250 micro-inch Ra based on drawing or contract specification.
Q: How are small-diameter fittings protected during maritime shipping?
A: Small-diameter fittings are individually capped, wrapped, and packed in reinforced export-grade wooden crates for shipment protection.
Q: Do you accept third-party inspector presence during hydrostatic testing?
A: Third-party inspection can be arranged as witness point during hydrostatic testing according to agreed inspection and test plan (ITP).
Q: Can you manufacture these fittings using dual-certified material grades?
A: Dual-certified stainless steel grades such as 304/304L and 316/316L are available depending on project specification.
Q: What surface treatment is applied after machining?
A: Machined components undergo pickling followed by citric or nitric acid passivation after heat treatment.
Q: Are bolt holes drilled or punched?
A: Bolt holes are CNC-drilled to maintain ASME-compliant bolt circle positioning and dimensional accuracy.
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