GUILI is a professional lamp holder manufacturer specializing in E27 lamp holders and B22 (bayonet cap) lamp holders for residential, commercial and industrial lighting projects worldwide. Every lamp holder is engineered from high-temperature ceramic or flame-retardant thermoset/PC materials with corrosion-resistant contacts, delivering reliable bulb retention, safe insulation and long service life. As a leading lamp holder supplier, we partner with lighting distributors, fixture manufacturers and electrical wholesalers across Europe, America, the Middle East and Southeast Asia, supplying pendant lamp holders, surface-mount lampholders and custom OEM designs. For branded ranges or large projects, our custom lamp holder solutions offer flexibility in material, color, rating and packaging.
What Is a Lamp Holder?
A lamp holder (also called a lampholder or bulb holder) is the electrical socket that connects a light bulb to the power supply, holds the bulb securely in place and provides safe insulation between live parts. The two most common base types worldwide are the E27 (Edison screw, 27 mm thread) and the B22 (bayonet cap, 22 mm diameter with two pins). E27 lamp holders are twisted into place and are the standard in Europe, Asia and South America; B22 lamp holders are pushed in and twisted to lock, and are the standard in the UK, Ireland, Australia and India.
E27 vs B22 Lamp Holder: Which Is Better?
The best choice depends on your market and fixture. E27 lamp holders offer screw-in convenience, firm bulb retention and the widest bulb availability in most regions, making them the first choice for general lighting. B22 lamp holders lock with spring-loaded pins, so the bulb stays firmly in place even under vibration, which is why bayonet fittings remain standard in the UK and Commonwealth markets. For export planning, match the holder to the local bulb standard of your destination market.
E27 vs B22 Lamp Holder Comparison
| Comparison | E27 (Edison Screw) | B22 (Bayonet Cap) |
| Base type | Edison screw, 27 mm | Bayonet cap, 22 mm |
| Fitting method | Twist in | Push and twist to lock |
| Main markets | Europe, Asia, South America | UK, Ireland, Australia, India |
| Bulb retention | Held by screw thread | Spring-loaded pins, vibration-resistant |
| Best for | General, pendant and ceiling lighting | UK-standard fixtures, vibration-prone fittings |
Types of Lamp Holders
Our range covers the fittings most commonly specified for lighting projects:
- E27 to B22 adapters — convert between base types for fixture and bulb compatibility.
- E27 screw lamp holders — the global standard Edison screw base for pendant, ceiling and table lamps.
- B22 bayonet lamp holders — push-and-twist bayonet cap base, standard for UK and Commonwealth markets.
- Pendant lamp holders — designed to hang from ceiling cords or chains for pendant fixtures.
- Surface-mount lamp holders — attach directly to ceilings or walls for close-to-surface lighting.
- Ceramic high-temperature lamp holders — withstand high heat for industrial, high-wattage and halogen applications.
Materials and Why They Matter
The material of a lamp holder determines how much heat it can safely handle and how long it lasts. Ceramic lamp holders resist high temperatures without deformation, making them the right choice for high-wattage and halogen bulbs. Flame-retardant thermoset (bakelite) lamp holders offer classic durability and fire resistance. Flame-retardant PC lamp holders are lightweight, impact-resistant and economical, ideal for standard LED and CFL bulbs. In all our holders, the brass contacts are nickel-plated to resist corrosion and maintain low contact resistance over years of use.
Key Features of Our Lamp Holders
- Rated 250 V AC with current ratings from 5 A to 16 A
- High-temperature ceramic models support bulbs up to 60 W
- Flame-retardant housing tested to UL94 V-2
- Corrosion-resistant brass contacts with nickel plating
- Secure bulb retention for both screw and bayonet bases
- CE compliant manufacturing processes
- Custom colors, ratings, markings and packaging available
Applications of Lamp Holders
For residential lighting, our E27 and B22 lamp holders fit pendant lamps, table lamps, wall lamps and ceiling fixtures. For commercial projects such as hotels, restaurants and offices, durable flame-retardant holders deliver safe, consistent lighting across large installations. For industrial environments, ceramic high-temperature lamp holders power high-bay lighting, workshop lamps and production areas. For fixture manufacturers, our OEM lamp holders integrate directly into luminaires and branded lighting products.
OEM / ODM Customization Service
As a factory-based lamp holder manufacturer, we support wholesale and OEM/ODM orders. Our in-house engineering team handles custom materials, colors, ratings, logo markings and packaging. The process is simple:
- Send us your design — drawings, samples or just a description of your requirements.
- Revise, review and finalize — our engineers adapt the design and recommend the most cost-effective solution.
- Sample making and approval — we build a sample for your approval before mass production.
- Production and global delivery — certified, quality-checked and export-packed for sea, air or express freight.
Quality & Factory Strength
GUILI operates a 30000-square-meter production facility with 10 years of experience in electrical accessories. Each lamp holder passes strict quality testing before shipment: contact resistance checks, insulation resistance tests, dielectric withstand tests, temperature rise checks and material flame-retardant verification. We combine quality-controlled processes with competitive volume pricing, so lighting distributors, fixture manufacturers and wholesalers get reliable products at factory-direct prices.
What is the difference between E27 and B22 lamp holders?
E27 is an Edison screw base with a 27 mm thread, twisted into the holder, and is standard across Europe, Asia and South America. B22 is a bayonet cap with two pins and a 22 mm diameter, pushed in and twisted to lock, and is standard in the UK, Ireland, Australia and India. Choose E27 for screw-in convenience and worldwide bulb availability; choose B22 for markets where bayonet fittings are the local standard.
Can I use an E27 bulb in a B22 lamp holder?
No, an E27 bulb cannot fit a B22 holder directly because the base types are mechanically different. You can use an E27-to-B22 adapter to convert the fitting, or choose the lamp holder that matches your bulb base.
What materials are used for lamp holders — ceramic or plastic?
Both. Ceramic lamp holders withstand high temperatures and suit high-wattage or halogen bulbs, while flame-retardant thermoset and PC lamp holders are lighter, impact-resistant and more economical for standard LED and CFL bulbs. Match the material to the bulb wattage and heat level of your application.
What voltage and wattage can your lamp holders handle?
Our standard lamp holders are rated 250 V AC with current ratings from 5 A to 16 A. Ceramic models support high-wattage bulbs up to 60 W; flame-retardant plastic models are recommended for standard LED and CFL bulbs. Check the product specification for the exact rating.
Are your lamp holders fire-resistant?
Yes. Our lamp holders use flame-retardant materials tested to UL94 V-2 standards, and ceramic models provide inherent high-temperature resistance. All materials are designed to prevent heat damage and fire risk under normal operating conditions.
Do you offer OEM lamp holders with custom branding?
Yes. We offer full OEM/ODM service — custom materials, colors, ratings, markings, logo printing and packaging design. Send us your drawings or samples and our engineering team will finalize the specification.
What certifications do your lamp holders have?
Our production lines are certified to ISO9001 / CE, and products are tested for contact resistance, insulation resistance, dielectric withstand and temperature rise. Certificates are available on request for your target market.
What is the MOQ for wholesale orders?
Our standard MOQ is 1800 pcs per model, but we can be flexible for first-time trial orders and sample purchases. Contact our sales team for the exact MOQ and volume pricing.
How long is the production lead time?
For standard models in stock, we ship within 30 days. For OEM/custom orders, production typically takes 7 to 12 days after sample approval, depending on complexity and quantity.
Do you provide samples before a bulk order?
Yes. We provide samples for evaluation. The sample cost is refundable or deducted from the first bulk order depending on quantity and model.
Can you produce E27 to B22 adapters?
Yes. We produce E27-to-B22 and B22-to-E27 adapters as part of our OEM range, allowing customers to use bulbs of one base type with fixtures of the other.
What is the difference between pendant and surface-mount lamp holders?
A pendant lamp holder hangs from a ceiling cord or chain for pendant lamps, while a surface-mount lamp holder attaches directly to a ceiling or wall surface. Choose pendant holders for hanging fixtures and surface-mount holders for close-to-ceiling or wall applications.
If you are planning lamp holders and bases for a hotel, retail fit-out, or other commercial lighting project and want to discuss socket types, materials, or order quantities, GUILI Electrical‘s team can walk through the same kind of planning process described in this article — from initial base style and compliance decisions through to production, quality checks, and packing for shipment.
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