Mounting components: Rails + Clamps + Posts (Source: XHX); Golden Rule: Five major components (Source: XHX); Core: Rail load-bearing assembly (Source: gtzl); Note: Clamp torque (Source: PVrack).
I.
Rails
Aluminum Rails: Extruded aluminum 6005-T5/6063-T6 (Source: gtzl); Length: 3.0m, 4.0m, 5.0m, 6.0m (Source: gtzl); T-Slot: Accommodates clamp fasteners (Source: XHX); Crossbeams: East-west crossbeams connected by bolts (Source: PVrack); Grounding: Electrical connection path (Source: PVrack)—Rails: Material + Length + T-Slot (Three key points).
II.
Clamps
Mid-Clamps: Secure adjacent modules (Source: CHUDU); End-Clamps: Secure array edges (Source: CHUDU); Torque: 96–144 in-lb (Source: PVrack); Material: Stainless steel or anodized aluminum (Source: PVrack); Spacing: Maintains module spacing (Source: PVrack)—Clamps: Mid-clamp + End-clamp + Torque (Three key factors).
III. Uprights
Upright: Vertical support driven into the foundation (Source: Starwin); Base: Adjustable base plate (Source: Starwin); Purlin: C-section steel beam (Source: XHX); Diagonal Brace: Triangular bracing (Source: Starwin); Ground Pile: 114mm helical ground pile (Source: Chinese Government Procurement Network) — Upright assembly: Support + Base + Diagonal Brace (three-part structure).
IV.
Fasteners
Bolt: Hex bolt / Hex socket bolt (Source: Nankong); T-Bolt: T-bolt with spring nut (Source: Tuyue); Screw: M8 hanger bolt (CE certified) (Source: Alibaba); Washer: Washer / Spring washer (Source: Tuyue); Stainless Steel: SUS304 stainless steel (Source: PVrack) — Fastening components: Bolt + T-Bolt + Washer (three accessory types).
V.
Roof Accessories
L-Foot: L-shaped mounting foot (Source: XHX); Hook: Roof hook (Source: Tradego); Clamp: Standing seam clamp (38/50/76mm) (Source: PVrack); Waterproofing: EPDM waterproof gasket (Source: PVrack); Rail Connector: Rail connector (30×40) (Source: 1688) — Roof components: L-Foot + Hook + Clamp (three mounting elements).
VI. Component Selection Key Points
Material: Hot-dip galvanized Q235 steel or 6063-T6 aluminum alloy (Source: sincere); Grounding: UL2703 grounding hardware (Source: SolarVision); Lifespan: 25+ years of outdoor service (Source: tradego); Corrosion Resistance: Galvanic corrosion prevention via compatible alloys (Source: SolarVision); Certification: CE and UL certified (Source: Alibaba)—Selection criteria: Material + Grounding + Lifespan (Three-point verification).
VII.
Procurement Recommendations
First, select rails (6005-T5); second, choose clamps (mid and end clamps); third, specify posts (adjustable bases); fourth, purchase fasteners (T-bolts with spring nuts);
fifth, add grounding (UL2703)—Mounting system: Rails + Clamps + Posts (Three core components).
