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Valve Component Forgings

This is the wider valve component page: bonnets, valve tees, discs, stem blanks, custom valve blanks and other pressure-retaining parts, supplied as forgings or rough-machined to the drawing. Valve bodies themselves have their own page.

  • Bonnets · valve tees · discs · stem blanks
  • Forged blanks or rough-machined parts
  • Carbon, stainless, duplex and alloy steel
  • NDT · MTC 3.1 · heat-treatment record
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Valve Forgings Explained

Each component is quoted from its own drawing and the valve project specification: drawing revision, pressure service, critical wall areas, bore, machining allowance and forging weight. Grades are carbon and low-temperature steels, stainless, duplex and alloy steels, or the pressure-component material the project names, against the ASTM standard cited.

A valve programme usually needs several different forgings that share one material and one NDT scope, so it is worth sending the whole component list together rather than one part at a time. Inspection is then agreed as a scope instead of per item: NDT extent, material traceability, MTC 3.1, the heat-treatment record and a dimensional report.

Engineering Snapshot

Product family: Valve and Pressure Forgings

Valve Forgings Supply Scope

Bonnet, valve tee, disc and stem-blank RFQs are checked from the drawing, pressure application, material grade, forging process, machining allowance, NDT scope, documents and export packing. The valve body is quoted on its own page.

  • Bonnet, valve tee, disc and stem-blank forgings - valve bodies have their own page
  • Drawing-based forging process and machining allowance support
  • Material, heat treatment, UT, MT, PT, PMI and MTC requirements checked early
Request a quoteInspection Documents

Valve component or the valve body?

This page is for the valve components around the body: bonnets, valve tees, discs and stem blanks, each quoted from its own drawing.

For the valve body itself, the pressure-retaining shell, see Valve Body Forgings.

Valve Forgings Technical Specification

Valve Forgings Technical Specification
Scope and rating
Valve component scopeBonnets, valve tees, discs, stem blanks and other pressure components around the valve body are reviewed as forged blanks or rough-machined parts; valve bodies have their own page.
Supplied variants
Valve bonnet forgingsValve tee forgingsValve disc and stem blanksPressure valve componentsCustom valve blanksDrawing-based valve parts
Standards and materials
Standards / drawings
  • Customer drawings and valve project specifications
  • ASTM material standards
  • NDT requirements by project
  • Heat treatment and dimensional report requirements
Material grades
  • Carbon steel valve forgings
  • Low-temperature steel valve forgings
  • Stainless steel valve forgings
  • Duplex and alloy steel valve forgings
  • Project-specified pressure component materials
Geometry, tolerance and inspection
Typical review basisDrawing revision, pressure service, material, wall sections, allowance, heat treatment and NDT scope.
Critical dimensionsBore, port geometry, pressure wall, flange or welding end area, machining allowance and rough weight.
Inspection depthNDT scope, material traceability, MTC 3.1, heat-treatment record and dimensional report.
Reviewed before quotation
  • Drawing revision and geometry
  • Pressure service and critical wall areas
  • Material grade and heat treatment
  • Forging weight and machining allowance
  • NDT and third-party inspection
  • MTC and traceability documents
Buying logic
Best-fit RFQBest for bonnets, valve tees, discs, stem blanks and other pressure valve components supplied as forged blanks or machined parts.
Buyer applicationValve manufacturers, oilfield equipment, power generation, petrochemical and pressure control systems.
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Your standard, drawing revision and project specification govern.

Also known as

valve forgingvalve tee forgingvalve bonnet forgingpressure valve component

How to Send This RFQ

Send these details

  • Drawing
  • Material
  • Application pressure
  • Weight or dimensions
  • Machining allowance
  • Heat treatment
  • NDT
  • MTC
  • Quantity
  • Destination

Avoid these omissions

  • Sending a product name without the latest drawing revision
  • Leaving critical dimensions, datum faces or machining allowance unclear
  • Omitting material grade, heat treatment or NDT scope until after price discussion
  • Using flange table language for a drawing-controlled forged component
  • Forgetting destination country, packing or third-party inspection requirements

Manufacturing and Inspection Route

We confirm each step against your drawing or standard before we quote.

  1. Material review

    Material grade, heat number, certificate basis and substitution limits are checked against the Valve Forgings drawing or standard before procurement is released.

  2. Forging process confirmation

    The forging route is selected around branch geometry, wall transitions, pressure zones and machining allowance so the pressure component is not treated as a generic flange blank.

  3. Heat treatment

    Heat treatment is planned around pressure-service material requirements, wall thickness, NDT scope and mechanical-test records required by the valve or equipment drawing.

  4. Rough machining

    Rough machining establishes port, branch, body or bonnet datum surfaces and verifies whether enough stock remains around pressure-wall transitions.

  5. Final machining

    Final machining controls ports, branch bores, body faces, bonnet interfaces, wall transitions and drawing tolerances before dimensional inspection is issued.

  6. Inspection and document review

    Inspection covers dimensional report, MTC 3.1, PMI, pressure-component NDT notes and required UT, MT or PT records before release documents are matched to the PO.

  7. Marking, packing and export document preparation

    Marking, packing and export documents are prepared by PO line item so the Valve Forgings shipment can clear customs and be identified at site receiving.

Inspection and Documents

List document requirements in the first RFQ; they affect price and schedule.

  • MTC EN 10204 3.1
  • Heat treatment record
  • Dimensional report
  • PMI when alloy verification is required
  • UT, MT or PT when specified
  • Tensile, impact or hardness test records when required
  • Third-party inspection support by project request

FAQ

Which valve components do you forge?

Bonnets, valve tees, discs, stem blanks, custom valve blanks and other pressure-retaining parts, supplied as forgings or rough-machined to the drawing. The valve body itself is quoted on its own page.

Should a valve programme send all its component drawings together?

Yes. A valve programme usually needs several forgings that share one material and one NDT scope, so sending the whole list lets us agree inspection as one scope - NDT extent, traceability, MTC 3.1, heat-treatment record and dimensional report - instead of per item.

Is each valve component quoted from its own drawing?

Yes. Each component is quoted from its own drawing and the valve project specification: drawing revision, pressure service, critical wall areas, bore, machining allowance and forging weight.

Forged Flange RFQ Checklist

Prepare forged flange RFQs with standard, size, class, material, facing, inspection and destination, plus fields for rings, cylinders and custom forgings.

MTC 3.1 Guide

A real EN 10204 3.1 MTC sample: our certificate for 304L forged flanges, customer and order references redacted, and how to check heat, chemistry and tests.

Valve Body Forgings

Valve body forgings - the pressure-retaining shell of gate, globe and check valves - as blanks or rough-machined to the valve OEM drawing, with NDT and MTC 3.1.

Forged Tees

Send forged tee and valve tee RFQs with drawing, branch geometry, material grade, machining allowance, NDT, dimensional report and MTC requirements.

Non-Standard Forgings

Send RFQs for non-standard and custom forged parts by drawing, material, dimensions, machining allowance, heat treatment, NDT and documents.

Forged Flanges

We forge flanges to ASME B16.5 and B16.47 (NPS 1/2 to 60), EN 1092-1, DIN and GOST 33259 in A105, LF2, stainless and duplex grades, with MTC 3.1.

Standard Flanges

Standard flanges for stockists and distributors: weld neck, slip-on, blind, socket weld, threaded and lap joint to ASME, EN and GOST. Mixed sizes, MOQ 1 piece.

Square Flanges

Send RFQs for forged square flanges by drawing, bolt pattern, port size, material, machining, inspection and MTC 3.1 requirements.

Commercial terms

Reply time
We reply to every RFQ within 8 hours.
Service hours
08:00–20:00 Eastern Time (ET; UTC−5, UTC−4 in summer), every day, including public holidays.
Minimum order
1 piece
Samples
Free of charge; you pay the freight.
Lead time
9 to 30 days after drawing approval.
Payment
30% deposit with the order; the balance is paid in full when the goods arrive at the port in China that you designate. The same applies to FOB, CFR and CIF.
Packing
Surfaces are coated with anti-rust oil. Most orders go in wooden cases, and every wooden case is fumigated. Large parts are steel-strapped onto pallets and wrapped in waterproof tarpaulin.
Quality claims
After you report a problem, we give you a handling plan within 8 hours.
Delivery terms
Standard: FOB the Chinese port you designate, Incoterms® 2020; we usually ship from Tianjin. On request: CFR or CIF to your destination port, quoted per RFQ. Other Incoterms® 2020 terms, except EXW and DDP, are quoted on request.

Send your RFQ or drawing directly to BLD Forge Direct.

Email quote@bldforgedirect.com with standard, drawing, material, quantity and inspection requirements.

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