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CHENGSHUOPRECISION
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Request a drawing review

THREADS • BORES • SEAL INTERFACES

Threads. Seats. Clean passages.

Bring the two mating connections, internal passage and seal interface into the same drawing review. Compare photographed connectors and bored parts, then state the thread checks, internal-edge requirements and any separate functional tests your assembly needs.

Explore 4 relevant cases
Illustrative hex through-bore adapters, tapered valve needles or stems and valve seat inserts
Illustrative component forms · manufacturing review required

YOUR COMPONENT SELECTION

Choose the form.
Review the interfaces.

Include section views, the intended sealing method and internal-edge requirements. Specify any pressure, leakage or cleanliness test for capability review.

Review the component machining route

Plan the sample acceptance records

Are threads, passages and seal interfaces fully defined?

For more than one component, bring the assembly interfaces into one review. Include a drawing and quantities for each part.

Build my component brief

Photographed references illustrate related geometry. They do not establish that the illustrated forms have been supplied or qualified for your application.

YOUR PROJECT. YOUR PRIORITIES.

Make the purchasing
decision specific.

Align engineering, sourcing and quality around a clear part definition before the quotation and sample review.

01

Keep threads and sealing surfaces distinct

Specify thread standard, size, pitch and class together with usable engagement. Identify the actual seal and the surfaces it contacts; dimensional thread acceptance and assembled sealing performance are different checks.

02

Resolve the internal passage

Show cross holes, bore intersections, end edges and inaccessible regions in section views or a model. Name the features requiring deburring, and define cleanliness requirements with an agreed inspection method.

03

Assign responsibility for functional tests

If a pressure, leakage or media-compatibility test is needed, include its procedure, conditions and acceptance criteria. Confirm the test scope and supplier capability before including it in the commercial agreement.

YOUR NEXT ORDER / EVIDENCE & REQUIREMENTS

Keep the component and its acceptance scope identifiable.

Map the turned body, slot and functional edges on your drawing. For a multi-item order, agree the requirements and receiving documents by line.

Explore the part inspection plan

Relevant order handovers

Mixed-component orderDelivery recorded 21 Jul 2026

Selected for the purchasing question. The customers’ actual industries are not disclosed.

FROM THE CHENGSHUO PORTFOLIO / 4 SELECTED REFERENCES

Inspect the actual
component references.

Explore more reference geometries

NEW / ENGINEERING CONCEPT COLLECTION

More forms for your application.

Purposeful component forms for automation, sensors and fluid equipment. Explore the geometry and buying decisions, then develop your own drawing-led brief.

Metering valve needle — AI-generated engineering conceptcs-product-068

AI-generated engineering concept

Fluid control & equipment

Metering valve needle

The same tip length can produce a different relationship to the seat if taper definition and axial travel are unclear.

Key geometry & review priorities

Controlled metering taper · Guided stem journal · Adjustment thread and shoulder

  • Taper profile
  • Guided relationship
  • Adjustment geometry
  • Surface and handling

Feasibility and acceptance require your drawing.

Discuss this geometry
Banjo fitting body — AI-generated engineering conceptcs-product-069

AI-generated engineering concept

Fluid control & equipment

Banjo fitting body

A fitting can assemble mechanically while an uncontrolled burr or damaged sealing face compromises the intended flow path.

Key geometry & review priorities

Central bolt-eye passage · Parallel annular sealing faces · Threaded side connection

  • Bolt eye
  • Seal faces
  • Threaded side port
  • Intersection edges

Feasibility and acceptance require your drawing.

Discuss this geometry
Face-seal gland nut — AI-generated engineering conceptcs-product-070

AI-generated engineering concept

Fluid control & equipment

Face-seal gland nut

A nominally matching thread does not establish that the internal shoulder, gland and seal stack are compatible.

Key geometry & review priorities

Internal connection thread · Annular gland-retaining shoulder · Hexagonal wrench interface

  • Internal thread
  • Retaining shoulder
  • Gland clearance
  • Wrench access

Feasibility and acceptance require your drawing.

Discuss this geometry
Tapered valve seat insert — AI-generated engineering conceptcs-product-071

AI-generated engineering concept

Fluid control & equipment

Tapered valve seat insert

A visible cone does not define the contact band, installed position or leakage behavior of the valve.

Key geometry & review priorities

Recessed conical seating surface · Concentric flow passage · External locating land and flange

  • Seating profile
  • Locating land
  • Flow bore
  • Axial stop

Feasibility and acceptance require your drawing.

Discuss this geometry
Cross-ported spool valve sleeve — AI-generated engineering conceptcs-product-058

AI-generated engineering concept

Fluid control & equipment

Cross-ported spool valve sleeve

Acceptable hole sizes do not establish the intended overlap, sliding behaviour or internal edge condition.

Key geometry & review priorities

Axial spool bore · Radial port pattern · Outer locating shoulders

  • Bore in its final condition
  • Port position
  • Internal intersections
  • Matched assembly

Feasibility and acceptance require your drawing.

Discuss this geometry
Retained hose-tail stem — AI-generated engineering conceptcs-product-059

AI-generated engineering concept

Fluid control & equipment

Retained hose-tail stem

A hose-tail diameter alone does not define tube fit, assembly damage or retention inside the device.

Key geometry & review priorities

Rounded hose-barb profile · Axial through passage · Shoulder and retaining groove

  • Tube-contact profile
  • Device-side retention
  • Passage and edges
  • Assembly validation

Feasibility and acceptance require your drawing.

Discuss this geometry

AI-generated geometry studies, not photographed production or completed customer projects. Each concept includes a manufacturing review brief; specifications are agreed from your drawing.

Explore all new component references

THE HANDOVER TO CHENGSHUO

Send the information
that moves the review.

  • Thread designation and sealing-interface details
  • Bore sections, cross holes and internal-edge requirements
  • Material, finish, cleanliness and media requirements
  • Required dimensional records and any functional test scope
Request a drawing review

Does a thread specification also define the sealing requirement?

No. Identify the intended sealing system and its contact surfaces separately. Provide the mating interface and any required functional test so the quotation covers the correct scope.

Product examples help define the conversation. Suitability is assessed against your component specification.

Full drawing & RFQ checklist

EXPLORE ANOTHER BUYER PATHWAY

ENGINEERING KNOWLEDGE

A practical next step.

From drawing to project review.

Read the film transcript

Start with your drawing. Define material and finish. Identify critical features. Align samples and production quantities. Request a project review. Illustrative renders and Chengshuo component photography; this is a project overview, not machining footage.

Discuss your drawing

CHENGSHUO / PROCESS FILMS

Process film

Silent process film. Workshop footage is process context; it is not a record for the reference component.

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