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Buttweld and Pressure Piping Components
Stainless fittings supplied by grade, class, dimensions and inspection requirement
SAKYMETAL supplies stainless steel elbows, tees, reducers, caps, stub ends and related piping fittings. A complete enquiry identifies material grade, fitting type, nominal size, schedule or wall, dimensional standard, seamless or welded class, testing and certificate requirements.
Common grades
WP304, WP304L, WP316, WP316L and other grades are reviewed against the required ASTM/ASME specification.
Fitting types
Elbows, tees, reducers, caps, stub ends and project-specific components.
Class and inspection
Seamless or welded construction, NDE extent, heat treatment and documentation are defined by the order.
Supply Specification
The quotation and purchase order should define the fields below. Availability and acceptance criteria are confirmed against the governing product specification.
| Products | 45°/90° elbows, tees, concentric/eccentric reducers, caps and stub ends |
|---|---|
| Grades | 304, 304L, 316, 316L, 310 and 310S by applicable specification |
| Material specification | ASTM A403/A403M for wrought austenitic pressure fittings when applicable |
| Dimensions | ASME B16.9 or project drawing |
| Construction | Seamless or welded class as ordered |
| Wall | Schedule or matching pipe wall to be stated |
| Inspection | Visual, dimensional, PMI and NDE scope as specified |
| Documentation | Heat traceability and agreed certificate package |
Standards and Selection Notes
ASTM A403/A403M
Covers wrought stainless steel fittings for pressure-piping applications and uses grade/class designations that identify material and construction requirements.
ASME B16.9 dimensions
Factory-made wrought buttwelding fittings are commonly ordered to ASME B16.9 dimensional requirements. State size, schedule, fitting type and dimensional standard.
Low-pressure fittings are a different scope
As-welded fittings for low-pressure, low-to-moderate-temperature corrosive service may fall under ASTM A774/A774M. Do not substitute one fitting specification for another without design approval.
Typical Applications
- Chemical and process piping
- Food, beverage and hygienic utility systems
- Water-treatment and desalination systems
- Energy and general industrial piping
- Marine and coastal piping assemblies
Send a Complete RFQ
For a faster technical review, include material grade, applicable standard and revision, product form or construction, dimensions and tolerances, condition or finish, quantity, inspection and certificate requirements, delivery destination and intended service.
Related Products and Guides
Frequently Asked Questions
What information is needed for a fitting quotation?
Provide grade, specification, class, fitting type, nominal size, schedule or wall, dimensional standard, quantity, NDE, certificate level and delivery destination.
What is the difference between seamless and welded fitting classes?
The class identifies the manufacturing route and examination requirements within the governing specification. State the required class rather than accepting an unspecified construction.
Can fittings be supplied with PMI?
PMI and other inspection requirements can be included when specified before quotation. Define the method, sampling rate, acceptance basis and required report.
Technical References
- ASTM A403/A403M — Wrought Austenitic Stainless Steel Piping Fittings
- ASTM A774/A774M — As-Welded Wrought Austenitic Stainless Steel Fittings
Reference links define general material or specification scope. The final purchase order, applicable standard revision and material test certificate govern supplied product acceptance.