Products supplied
- Metallic bellows
- Rubber expansion joints
- Fabric expansion joints
- Hinged and gimbal joints
- Pressure-balanced assemblies
STEEL GEMS · MUMBAI · INDIA + EXPORT
Expansion Joints & Bellows
Flexible joints engineered to absorb thermal movement, vibration and installation displacement.
Specify it for your project.
International references for Expansion Joints & Bellows. Select the required specification system, then complete your enquiry. Options are available for technical review; compliance and supply capability require written confirmation.
1 · Choose reference standards
Selecting several references requests a compliance review. It does not establish equivalence or dual certification. Hidden selections remain in your enquiry.
0 reference groups selected
2 · Complete buying details
Keep these distinctions clear
Class, PN and JIS K are separate rating systems; no automatic conversion or drilling compatibility is implied. NPS / DN is nominal, not actual OD. Similar grades are comparison candidates only. ASTM / ASME and EN designations are not automatic substitutes.
Certificates, inspection, IBR and project approvals are separate requirements. An ISO 9001 quality-system certificate is not a product approval. Current issuer editions may differ from the edition required by your contract.
3 · Review and share enquiry
STEEL GEMS — INTERNATIONAL SPECIFICATION ENQUIRY Product: Expansion Joints & Bellows Requested references: To confirm Exact grade / UNS / delivery condition: To confirm Required edition / addenda: To confirm Size, actual OD, wall / schedule and units: To confirm Rating system and value (Class / PN / JIS K / Table): To confirm Type, construction, connection, facing / thread: To confirm Quantity with unit: To confirm Documents / tests requested: To confirm Delivery city / country / ZIP / port: To confirm Project notes / origin restrictions / service conditions: To confirm Please review applicable scope, compatibility, material origin, manufacturing route, compliance, availability and commercial terms. This is an enquiry, not an engineering approval.
WhatsApp opens a draft for you to review and send. Files are not attached automatically; use the RFQ upload page or attach them separately.
Official standard catalogues
Reference summaries only. Confirm full scope and required edition with the issuer and project specification.
Grades and materials
- SS 304/316/321
- Alloy 625 / 800 / 825
- Rubber compounds
- High-temperature fabrics
- Carbon-steel hardware
Common specifications
- EJMA
- ASME B31 project requirements
- ASTM F1123
- Approved movement calculations and drawings
Typical applications
- Steam lines
- Exhaust and ducting
- Pumps and compressors
- Refineries
- Power and process plants
QUALITY YOU CAN TRUST
Discuss requirement →Documentation and inspection support
Steel Gems supports material certification, heat-number traceability, NABL laboratory testing, NDT and third-party inspection for Expansion Joints & Bellows when required by the purchase specification.