OSRAM Circular Fluorescent Tubes T9

When a ceiling-fixture or decorative ring requires a reliable circular lamp, the OSRAM circular fluorescent tubes T9 stand out. These rings are not just “another tube” but a defined format—engineers and specifiers turn to osram circular fluorescent tubes t9 because they match the mechanical and photometric demands of ring-luminaires. The diameter, base type, and service access matter. This text helps you choose, install and procure them smartly.

OSRAM T9 Circular Lamps – format & key specs

The “T9” designation implies a circular (ring) tube format, often with G10q 4-pin base. For example a sheet mentions 22 W T9 at 4000 K, base G10q, luminous flux ~1 350 lm.
More recent models include LED variants: 18.3 W replacing 32 W fluorescent, 2 000 lm, 3000 K 830 code, base G10q.
Another LED T9: 24 W, 2 900 lm, 4000 K, 24 W replaces 40 W fluorescent.
Important specs to compare when you’re specifying:

• Wattage and replacement equivalence (e.g., 24 W → replaces 40 W)
• Luminous flux (lm) and lumen per watt (lm/W)
• Base type (commonly G10q)
• Diameter / size (e.g., 300 mm, 400 mm ring)
• Colour temperature & CRI (3000 K, 4000 K, 6500 K; CRI often 80-89) 
  Use these to ensure fixture compatibility and replace-ease.

OSRAM Fluorescent Ring Tubes T9 – retrofit & service notes

When dealing with existing ring-fixtures, specifying osram fluorescent ring tubes t9 means you must check: socket dimension, clearance for ring diameter, fixture depth, ballast compatibility. Many older ring-fixtures use magnetic ballasts; newer versions offer LED-type circular T9 (direct or ballast-bypass). For example OSRAM substitutes show direct replacement tubes: 12 W LED circular replacing 22 W fluorescent with same base G10q.
Field practice tips:

• Measure ring outer diameter (e.g., 300 mm or 400 mm) before ordering.
• Confirm the G10q socket pins align with the fixture’s ring contacts.
• Check ambient temperature: sealed ceiling rings may over-heat tube, reducing lifespan.
• Maintain spare stock from same production run to avoid colour shift between batches in one area.

OSRAM Circular Lighting Fixtures – system integration

If you are specifying or installing osram circular lighting fixtures, then the tube is only part of the picture. The fixture housing, diffuser, mounting hardware and service access must match the tube specs. Consider:

• Ring diameter vs fixture aperture: if tube sits loose or too tight it may cause uneven illumination.
• Diffuser type: ring tubes emit 360° light; fixture must manage glare, provide uniform spread.
• Access for maintenance: ability to remove tube without dismantling major parts
• Thermal management: ring-tubes still produce heat; fixture must allow a free air space or heat sink contact to maintain Tc < specified maximum.
• Control gear compatibility: if using LED circular T9, ensure driver or ballast supports the ring tube’s driver type (EM/mains vs legacy ballast).
  These checks help you avoid site issues like uneven light, flicker, or short lifespan.

Procurement & B2B logistics

When buying OSRAM circular fluorescent tubes T9, from a wholesale supply standpoint you should:

• Order full project-quantity to keep colour bin and output consistent across all rooms.
• Confirm packaging: typical box contains 10 units for many models. For example LED tube T9 18.3 W shows “Full box quantity 10”.
• Document product codes, batch numbers, fixture diameter compatibility and base type for maintenance traceability.
• Maintain spare units (2-3 % extra) from same batch for replacements; mixing batches may lead to slight colour or output variation.
• From distributor: check stock location, delivery lead time, warranty terms.
  In your case procurement via a trusted distributor ensures you get authentic OSRAM tubes with full documentation and support.

Why choose Bank of Lamps

• Official European distributor with stock in Latvia
• Direct B2B sales across EU including Germany, France, Netherlands, Spain, Baltics
• Full documentation and original manufacturer (OSRAM) warranty
• Fast dispatch from central warehouse
• No project design or custom solutions — only verified wholesale supply