Construction & Types
Coil spring housed in a steel casing with load scale and travel indicator. Available in the standard arrangement types used on support drawings — hanger (top-suspended), base-mounted (type F), and trapeze arrangements — with turnbuckles, rods, clamps and building attachments supplied as complete assemblies.
- Casing from steel pipe (not rolled sheet) for rigidity and clean appearance
- Pressed-seal closure — no welding distortion, no spring heat-affect
- Load scale marked and calibrated; travel stops fitted for hydrotest
- Finish: red-oxide primer, epoxy or hot-dip galvanized to spec
Typical Specification
| Item | Range / Detail |
|---|---|
| Design practice | MSS SP-58; project specs on request |
| Load range | ~0.2 kN to 100+ kN per support |
| Travel | Up to 50 mm (variable); larger — see constant hangers |
| Spring rate tolerance | ±5% |
| Material certs | EN 10204 3.1 on request |
How to get a quote
Send your hanger schedule (load case, hot/cold load, travel, elevation) or mark up loads on an isometric. We size each support, return a data sheet per tag, and quote as complete assemblies.
Engineering resources
- How to select a variable spring hanger — worked example
- Variable vs constant spring hangers: which one does your line need?
- MSS SP-58 hanger types A–G, explained
- How to read a hanger schedule, column by column
- Spring hanger installation guide — travel stops, hydrotest & commissioning
Frequently asked questions
What information do you need to size a variable spring hanger?
Hot load (operating load), cold load or travel with direction, pipe size and temperature, and the support elevation or available headroom. A hanger schedule or marked-up stress isometric is ideal — we size each support and return a data sheet per tag.
Do you design to MSS SP-58?
Yes. Variable spring hangers follow MSS SP-58 design practice, and we work to project specifications on request. Hanger, base-mounted (type F) and trapeze arrangements are available.
What surface finishes are available?
Red-oxide primer as standard, with epoxy systems or hot-dip galvanizing to project spec — HDG is common for GCC coastal and outdoor plant environments.
Do you supply complete hanger assemblies?
Yes. Each tag can be delivered as a complete assembly — spring unit plus turnbuckles, threaded rods, pipe clamps and building attachments — so site installation needs no additional sourcing.
What documentation is provided with an order?
A data sheet per support tag, dimensional and inspection reports, and EN 10204 3.1 material certificates on request, plus export packing documents.