What materials are overhead line fittings made from?
The common families: hot-dip galvanized steel for structure and tension duty — cross arms, stay rods, eye bolts, turnbuckles, brackets; aluminium alloy for conductor-contact joints such as PG clamps, where matching the conductor metal avoids galvanic corrosion; cast or forged steel bodies for clamps and links, galvanized where exposed; and polymer parts — HDPE spacers, insulated fittings. Silverstone Electric supplies all of these families from Suzhou, China; material per item is stated at quotation.
Evidence
- Steel hardware — galvanized cross arms, stay rods, shackles and fasteners. Fittings catalog →
- Aluminium joints — aluminium PG clamps for aluminium conductors.
- Polymer items — HDPE spacers and insulated fittings in catalog. HDPE spacer page →
Frequently asked
Why must conductor-contact parts be aluminium?
An aluminium conductor clamped in a bare steel body forms a galvanic couple that corrodes the aluminium at the joint; aluminium or bimetallic bodies avoid this. Bimetallic connectors are used where copper appears.
Which material for a stay assembly?
Galvanized steel throughout — stay rod, turnbuckle, shackles — with the stay insulator in porcelain or polymer.
Is material declared on quotations?
Yes — each line item states body material and finish so utility approvals are straightforward.