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Shell Plates/Cylinders Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

Shell plates and cylinders are critical structural elements in tower shells, typically fabricated from rolled metal plates welded together to form cylindrical or conical sections. They serve as the primary containment barrier for processes involving pressure, temperature, or chemical reactions, with design considerations including wall thickness, diameter, and material properties to meet specific operational requirements in industries like chemical processing, power generation, and oil refining.

Working Principle

These components operate by distributing internal pressure and mechanical loads evenly across their curved surfaces, utilizing the structural integrity of cylindrical geometry to minimize stress concentrations. The principle involves maintaining containment while resisting deformation through proper material selection, thickness calculation, and adherence to pressure vessel design codes.

Materials

Common materials include carbon steel (e.g., ASTM A516 Gr.70), stainless steel (e.g., 304/316L), alloy steels (e.g., ASTM A387), and clad materials for corrosion resistance. Specifications cover yield strength, tensile strength, and impact toughness, with thickness ranging from 6mm to 100mm depending on diameter and pressure requirements.

Technical Parameters

Length 1000mm to 12000mm per segment
Diameter 500mm to 10000mm
Thickness 6mm to 100mm
Pressure Rating Up to 100 bar
Temperature Range -50°C to 500°C

Standards

ISO 9001, ASME BPVC Section VIII, EN 13445, DIN 28018

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Shell Plates/Cylinders.

Parent Products

This component is used in the following industrial products

Tower Shell

The outer cylindrical or conical structural enclosure of a prilling tower that contains the prilling process.

View Product Details

Engineering Analysis

Risks & Mitigation

Corrosion leading to wall thinning
Weld defects causing leaks
Overpressure resulting in rupture
Fatigue from cyclic loading

FMEA Triads

Trigger: Inadequate material selection or corrosion protection
Failure: Reduced wall thickness and potential leakage
Mitigation: Use corrosion-resistant materials, apply coatings, and implement regular inspection schedules

Trigger: Poor welding practices or insufficient NDT
Failure: Crack propagation and catastrophic failure
Mitigation: Adhere to welding procedures, conduct thorough NDT (e.g., UT, RT), and perform stress-relief annealing as needed

Industrial Ecosystem

Compatible With

Interchangeable Parts

Shell segments from global suppliers like Sandvik, Outokumpu, or local fabricators following ASME standards

Compliance & Inspection

Tolerance

Dimensional tolerances per ASME BPVC: ±1.5mm on diameter, ±0.5mm on thickness; weld alignment within 1.5mm offset

Test Method

Hydrostatic testing at 1.5 times design pressure, ultrasonic testing for thickness measurement, dye penetrant inspection for surface defects

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What are the main functions of shell plates and cylinders in tower shells?

They provide structural integrity to contain internal pressures, support internal components like trays or packing, and ensure safe operation under varying thermal and mechanical loads.

How are shell plates and cylinders manufactured?

Typically, metal plates are cut, rolled into cylindrical shapes, and welded longitudinally and circumferentially, followed by non-destructive testing (e.g., radiography) to ensure weld quality and compliance with standards.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Shell Plates/Cylinders