Manufacturing Capabilities
Rubber Expansion Joints
Compound Preparation: Rubber compounds are selected according to the specified elastomer and service conditions.
Reinforcement & Molding: Fabric or cord reinforcement, molding, and vulcanization follow the approved product construction.
Assembly Inspection: Dimensions, surface condition, and flange or backing-ring configuration are checked against the product drawing.
Metal Expansion Joints
Bellows Forming: Metal sheets or tubes are formed into the specified corrugated geometry.
Welding & Fabrication: Bellows seams and end connections are fabricated according to approved drawings and welding requirements.
Structural Inspection: Bellows dimensions, wall thickness where specified, and weld quality are checked against the inspection plan.
Braided Flexible Connectors
Hose & Braid Construction: Corrugated metal hose and stainless steel wire braid are assembled according to the specified design.
End Connection Assembly: Fittings are attached using the specified welding, crimping, or swaging process.
Assembly Verification: Overall length, braid coverage, and connection dimensions are inspected.
PTFE Expansion Joints
PTFE Forming: Flexible or convoluted PTFE components are formed to the required geometry.
Component Assembly: Flanges, reinforcement components, and limit devices are fitted where specified.
Final Checks: Dimensions, surface condition, and flange alignment are verified against approved drawings.
Quality Control Process
Order Review → Incoming Inspection (IQC) → In-Process Inspection (IPQC) → Final Inspection (FQC) → Documentation & Dispatch
Order & Drawing Review
Technical Requirements: Confirm product type, size, pressure rating, connection type, and required movement.
Operating Conditions: Review service medium, pressure, temperature, and installation requirements.
Inspection Planning: Identify applicable standards, required tests, acceptance criteria, and documentation before production.
Incoming Quality Control (IQC)
Material Verification: Check material grades and identification against purchase specifications.
Dimensional & Visual Checks: Inspect relevant dimensions and visible surface conditions.
Document Review: Verify available material certificates and applicable heat or batch identification.
In-Process Quality Control (IPQC)
Manufacturing Checks: Inspect forming, molding, reinforcement, welding, machining, or assembly at designated stages.
Critical Dimensions: Verify specified wall thicknesses, convolution geometry, connection dimensions, and overall length.
Process Records: Retain applicable inspection and production records according to the agreed quality plan.
Final Quality Control (FQC)
Visual & Dimensional Inspection: Check finished product condition, assembly dimensions, and connection alignment.
Marking & Identification: Verify product tags and other specified identification details.
Test Record Review: Confirm completion of required pressure, leak, or non-destructive testing before dispatch.
Inspection & Testing
Dimensional Inspection
Overall Dimensions: Check nominal diameter, overall length (OAL), and specified interface dimensions.
Flange Geometry: Verify bolt-hole quantity, pitch circle diameter (PCD), hole diameter, and flange orientation.
Tolerance Acceptance: Use approved drawings, purchase specifications, and applicable standards to determine acceptance limits.
Material Traceability
Material Certificates: Review available mill test certificates against specified material grades.
Heat & Batch Identification: Record applicable identifiers to support traceability between incoming materials and production records.
Inspection Documentation: Provide agreed material and inspection records according to order requirements and document availability.
Product-Specific Testing
Pressure Testing: Test pressure, duration, and acceptance criteria follow the applicable design requirements and approved procedure.
Leak Testing: Pneumatic or other specified leak tests are selected according to product design and service requirements.
Non-Destructive Testing (NDT): PT, RT, or other specified methods may be applied to relevant welds when required.
Applicable Standards & Customization
Standards & Specifications
Metal Bellows Expansion Joints: EJMA Standards or EN 14917, where applicable to the design and service conditions.
Piping Systems: ASME B31.3 or other specified project codes where applicable.
Flanges & Connections: ASME B16.5, ASME B16.47, EN 1092-1, or other agreed dimensional standards.
Material Requirements: Applicable ASTM, EN, or other specified material standards are confirmed during technical review.
Custom Engineering
Drawing Review: Submit PDF, DWG, DXF, STEP, or other agreed technical files for evaluation, subject to available engineering support.
Specification Confirmation: Confirm materials, dimensions, pressure and temperature conditions, movement requirements, and connections.
Inspection Coordination: Agree on testing, acceptance criteria, inspection hold points, and third-party inspection requirements before production.
Quality Documents
Available documentation depends on the product, material supply records, inspection scope, and order agreement.
Material Records
Applicable material test certificates and traceability records.
Inspection Reports
Dimensional, visual, and relevant in-process or final inspection reports.
Testing Records
Pressure, leak, and NDT reports when the specified tests have been performed.
Technical Documents
Approved drawings, technical data sheets, and Certificate of Conformity (CoC), where agreed.
EN 10204 Type 3.1 or 3.2 documentation is subject to the applicable requirements and confirmed inspection arrangements.
Request a Technical Review & Quote (RFQ)
Provide the following information to help determine the appropriate product configuration and quotation requirements.
Essential RFQ Information
Product & Size: Product type, nominal diameter (DN/NPS), and required quantity.
Operating Conditions: Service medium, design and operating pressure, and temperature.
Movement & Connections: Axial, lateral, or angular movement; flange, welded, threaded, or other connection type.
Materials & Standards: Required material grades, applicable design codes, and connection standards.
Testing & Documentation Requirements
Inspection Scope: Required pressure tests, leak tests, NDT, and acceptance criteria.
Quality Documents: Material certificates, inspection reports, and other required documentation.
Project Attachments: Drawings, technical datasheets, photographs, or reference samples.
Delivery Requirements: Target delivery schedule and destination.
Submit Your RFQ
Send your specifications and drawings through the website inquiry form or designated sales contact. Technical requirements, outstanding questions, inspection scope, and documentation should be confirmed before production.