ASTM B564 Alloy 625 Forged Flanges to ASME Dimensions | N06625

Product Specification

ASTM B564 Alloy 625 Forged Flanges to ASME Dimensions | N06625

Shaanxi Shangyou Stainless Steel Co., Ltd. supplies astm b564 alloy 625 forged flanges to asme dimensions | n06625 for buyers whose primary search intent is pressure-rated nickel-alloy flange procurement, not generic stainless or nickel-alloy stock. The page should be quoted against the selected standard edition, the equipment or component drawing and the governing design code. Alloy 625 forged flanges with material to ASTM B564 and dimensional/rating basis to ASME B16.5, ASME B16.47 or a project drawing.

The material decision should start with service conditions. High-strength Ni-Cr-Mo-Nb alloy for corrosive piping connections; forging integrity, heat treatment, facing and NDE are key controls. Important correction: ASTM B462 does not cover UNS N06625. Alloy 625 forgings and flanges should be specified to ASTM B564, with separate dimensional/rating standards. This comparison belongs in the enquiry stage because a higher alloy name does not automatically deliver the lowest life-cycle risk.

A complete RFQ needs product form, grade/UNS, ordered condition, dimensional basis, tolerances, quantity and inspection level. State NPS, pressure class, flange type, facing, bore, schedule, dimensional standard, finish serration, bolting interface and quantity. For pressure-containing products, the material standard controls product quality; it does not replace pressure-design calculations, corrosion allowance or code approval.

Manufacturing and documentation must remain connected. Forging from qualified stock, heat treatment, rough/final machining, marking and preservation. Cast flanges are not represented by this page. The baseline verification plan is: MTC, heat-treatment record, chemistry/mechanical tests, PMI, dimensions, facing finish, UT/PT and hardness where ordered. Any supplementary requirement—PMI extent, UT class, eddy-current acceptance, corrosion testing, grain size, roughness, cleanliness or third-party inspection—must appear in the PO before production.

Fabrication guidance: Repair welding, if permitted, needs buyer approval and a qualified procedure. Protect machined faces and RTJ grooves from damage and contamination. Selection boundary: A material standard does not define flange class or dimensions. Never quote without the dimensional standard, pressure class, facing and matching pipe bore. Buyers should provide fluid composition, maximum and minimum temperature, pressure, design life, fabrication route and applicable code so the quotation can separate mandatory requirements from optional controls.

Standards, Dimensions and Supply Definition

Material and Selection Markers

Use note: Values above are concise identification/selection markers, not a replacement for the ordered ASTM/AWS chemistry table or the MTC.

Candidate Applications

· Offshore process piping.

· Chemical plants.

· Scrubber systems.

· High-alloy piping tie-ins.

Buyer Decision Boundary

Important correction: ASTM B462 does not cover UNS N06625. Alloy 625 forgings and flanges should be specified to ASTM B564, with separate dimensional/rating standards.

Processing, Inspection and Documentation

· Manufacturing: Forging from qualified stock, heat treatment, rough/final machining, marking and preservation. Cast flanges are not represented by this page.

· Fabrication: Repair welding, if permitted, needs buyer approval and a qualified procedure. Protect machined faces and RTJ grooves from damage and contamination.

· Inspection: MTC, heat-treatment record, chemistry/mechanical tests, PMI, dimensions, facing finish, UT/PT and hardness where ordered.

· Traceability: Keep heat/lot identity through cutting, machining, bending, welding, testing and packing.

· Documentation: Confirm MTC type, test reports, packing list, country-of-origin statement and third-party inspection before production.

RFQ Checklist

· Standard and adopted edition: ASTM B564 material; ASME B16.5/B16.47 dimensions as applicable

· Grade / UNS: Alloy 625 / N06625

· Form and route: Forged flanges

· Dimensions, tolerances, quantity and unit basis

· Delivery/heat-treatment condition and surface/end finish

· Design code, service fluid/atmosphere, pressure and temperature

· Inspection/NDE, acceptance criteria, MTC and third-party witness points

· Marking, preservation, packing and delivery destination

Inquiry CTA

Frequently Asked Questions

1. What does ASTM B564 material; ASME B16.5/B16.47 dimensions as applicable cover for this product? Alloy 625 forged flanges with material to ASTM B564 and dimensional/rating basis to ASME B16.5, ASME B16.47 or a project drawing. Always purchase to the edition adopted by the contract or project specification.

2. Is this product seamless, welded, forged, rolled or drawn? The PO must state the required route exactly: Forged flanges. Do not rely on a product photograph or a family name to establish the route.

3. How should buyers select Alloy 625? High-strength Ni-Cr-Mo-Nb alloy for corrosive piping connections; forging integrity, heat treatment, facing and NDE are key controls. Important correction: ASTM B462 does not cover UNS N06625. Alloy 625 forgings and flanges should be specified to ASTM B564, with separate dimensional/rating standards.

4. Which dimensions must be included in the RFQ? State NPS, pressure class, flange type, facing, bore, schedule, dimensional standard, finish serration, bolting interface and quantity. Add quantity, unit basis, tolerances and any drawing-controlled geometry.

5. What heat-treatment or delivery condition is required? Heat treated to ASTM B564 and the selected grade condition. Final properties and corrosion performance depend on the ordered condition. The MTC and heat-treatment records should use the same grade and condition language as the PO.

6. Which inspection documents can be requested? MTC, heat-treatment record, chemistry/mechanical tests, PMI, dimensions, facing finish, UT/PT and hardness where ordered. The final inspection scope must be agreed before order placement.

7. Is it suitable for the intended corrosive or high-temperature service? A material standard does not define flange class or dimensions. Never quote without the dimensional standard, pressure class, facing and matching pipe bore. A material engineer should approve the final choice using actual service data.

8. What fabrication issues should be addressed? Repair welding, if permitted, needs buyer approval and a qualified procedure. Protect machined faces and RTJ grooves from damage and contamination. Use a qualified procedure and preserve heat/lot traceability after cutting or fabrication.

9. What are typical applications? Common candidate applications include offshore process piping, chemical plants, scrubber systems, high-alloy piping tie-ins. These examples are not blanket design approvals.

10. What information is needed for a firm quotation? Send standard and edition, grade/UNS, form, dimensions, condition, quantity, delivery destination, inspection/NDE, documentation, packing and any third-party inspection or code requirement.