Sliding shower door parts

The most critical components are the bearing material and the wheel diameter. High-quality rollers should utilize 304 or 316 stainless steel bearings or high-precision brass cores to prevent rust in high-humidity environments. The outer wheel is typically made of POM (Polyoxymethylene) or Nylon, which offers low friction and high wear resistance. Ensure the load-bearing capacity matches the weight of the tempered glass (usually 25kg to 45kg per pair) to prevent sagging or track damage.

For handles, you must verify the hole-to-hole distance (CC distance), commonly ranging from 145mm to 450mm. For water-retaining seals and magnetic strips, the glass thickness (6mm, 8mm, 10mm, or 12mm) is the deciding factor. Sourcing parts with UV-resistant PVC or silicone ensures the seals won't turn yellow or become brittle over time. Always request technical drawings (CAD) from the supplier to confirm the groove width and fin length.

While the glass itself must meet ANSI Z97.1 (US) or EN 12150 (EU), the hardware should pass salt spray testing (ASTM B117) to ensure corrosion resistance. For high-end projects, look for suppliers whose products have undergone cycle testing (up to 100,000 open/close cycles) to guarantee long-term mechanical durability. Ensure all metal components are lead-free and REACH compliant if exporting to the European market.

For B2B buyers, PVD (Physical Vapor Deposition) coating is superior to standard electroplating as it provides a harder surface that is highly resistant to scratches and chemical cleaners. Common finishes include Brushed Nickel, Matte Black, and Polished Chrome. If sourcing for coastal projects, specify Electro-polishing for stainless steel to provide an extra layer of protection against salt-air corrosion.

Zinc alloy is often used as a cheaper substitute for stainless steel but corrodes quickly in bathrooms. To mitigate this, request a Material Test Report (MTR) and perform a random salt spray test via a third-party inspector. You can also use Made-in-China.com's 'Audited Supplier' reports to verify the manufacturer's production capabilities and material sourcing transparency.

Shower door parts like rollers and hinges are high-density items. For orders under 100kg, Air Express (DHL/FedEx) is fast but expensive. For bulk B2B orders, LCL (Less than Container Load) sea freight is the most economical. Ensure the supplier uses heavy-duty double-corrugated export cartons and palletization to prevent box crushing during the long transit and multiple handlings.

Standard parts usually have an MOQ of 100-500 pieces, but customized finishes (like Rose Gold) may require 1,000+ pieces. Negotiate a staggered delivery schedule for large annual contracts to reduce your warehousing costs. Always include a penalty clause for delays exceeding 14 days in your Proforma Invoice (PI) to ensure the supplier prioritizes your production slot.

Use Secured Trading services provided by reputable platforms like Made-in-China.com to ensure payment is only released after shipping documents are verified. Never wire 100% of the payment upfront; a standard 30% deposit and 70% balance against the Bill of Lading (B/L) copy is the industry norm for protecting buyer interests.