This is a ready-to-ship family of stamped steel and aluminum brackets engineered for solar panel racking systems — rail clamps, end clamps, mid clamps, L-feet, and ground-mount base plates. We hold st
This is a ready-to-ship family of stamped steel and aluminum brackets engineered for solar panel racking systems — rail clamps, end clamps, mid clamps, L-feet, and ground-mount base plates. We hold stamped part tolerances at ±0.05 mm and flatness within 0.1 mm across 100 mm, with a standard production lead time of 5 working days after drawing approval. Each bracket is formed from 304 stainless steel or 6061-T6 aluminum, reaching surface hardness up to HRC 40 where required, and shipped with a 2.5 µm Ra surface finish as standard.
Solar racking fails when brackets bend or shift under wind load. Our dies are built with hardened tool steel (HRC 58-60) and maintained to produce repeatable bend angles within ±0.5 degrees. This means your rail-to-bracket interface stays square, torque specs hold, and panel rows do not creep out of alignment over 25-year service life. We use progressive stamping for high-volume parts, and manual transfer dies for short-run custom shapes.
We stock three primary alloys for this collection: 304 stainless steel (0.8-3.0 mm thickness), galvanized Q235B steel (1.5-4.0 mm), and 6061-T6 aluminum (2.0-5.0 mm). For stainless, we offer a brushed or electropolished finish. For galvanized steel, hot-dip galvanizing after forming adds 70-85 µm zinc coating per ASTM A123. For aluminum, we apply a clear anodize to 10-15 µm thickness per MIL-A-8625, which prevents galvanic corrosion when in contact with aluminum rails.
Clamp brackets must resist denting from hex bolts torqued to 25-35 Nm. We selectively induction-harden the clamping surfaces of carbon steel brackets to HRC 35-40, while keeping the spring zone soft for elastic recovery. Surface finish on contact faces is held to 1.6 µm Ra for stainless and 2.5 µm Ra for galvanized parts. This reduces friction during bolt tightening, so your installers get consistent clamping force without over-torquing.
Springback is the enemy of stamped brackets. Our tooling uses 2-3 degree over-bend compensation in the die, plus a coining step on critical bend radii. We verify every new die using a coordinate measuring machine to check bend angles and hole positions before production. For high-volume runs, in-die sensors monitor strip thickness and adjust the press tonnage automatically, keeping dimensional drift below 0.03 mm across a 10,000-part batch.
Every lot of the Solar PV Mounting Brackets Collection goes through a 3-stage check: first-article inspection (FAI) on the first stamped piece, in-process patrol checks every 2 hours, and final random sampling per ISO 2859-1 with a 1.0 AQL. We measure hole positions, edge distance, bend angle, and plating thickness. A digital report with actual measured values is sent with your shipment — not a generic certificate of conformance.
| Specification | Value |
|---|---|
| Materials | 304 SS, Q235B galvanized, 6061-T6 Al |
| Material thickness | 0.8 – 5.0 mm |
| Stamping tolerance | ±0.05 mm standard |
| Flatness | ≤0.1 mm / 100 mm |
| Bend angle tolerance | ±0.5 degrees |
| Surface hardness (carbon steel) | HRC 35-40 (selective) |
| Die hardness | HRC 58-60 |
| Surface finish | 1.6 – 2.5 µm Ra |
| Coating thickness (galvanized) | 70-85 µm |
| Lead time | 5 working days after drawing approval |
| MOQ | No minimum (no MOQ) |
If you are quoting a commercial solar project, you need material test certificates (MTC) per EN 10204 3.1, tensile test results, and salt-spray test data. We provide these free with every order over 500 pieces. For utility-scale projects, we can also perform a finite element analysis (FEA) on your custom bracket geometry and supply the report for your engineering review.
We have no MOQ — you can order 10 pieces for prototyping or 10,000 pieces for a field installation, and the unit price adjusts based on quantity breaks.
Yes, send your 2D or 3D drawing (STEP, IGES, or PDF) and we will confirm die costs and stamping feasibility within 24 hours.
We use a dedicated CMM program for each part, checking all critical dimensions on a 3D model reference, and we photograph the first article for your approval before mass production.
Standard collection parts ship in 5 working days; custom parts with new tooling take 10-15 working days depending on die complexity.
For your next ground-mount or rooftop project, consider our precision manufacturing process — every bracket is stamped in our Dongguan factory, made in China with full export documentation. If you are still defining your material or thickness, read our CNC cutting tool selection guide for edge quality insights, or check our CNC machining tolerances guide to see how we hold ±0.05 mm on stamped features.
Get a firm quote within 12 hours. Email your drawing to sc@bquq.com or send it via WhatsApp at +86 13713157787. We reply with a fixed price, lead time, and DFM feedback.
| Parameter | Capability |
|---|---|
| Materials | SPCC, SGCC, SUS301/304/316, brass, copper, beryllium copper, phosphor bronze |
| Process | Progressive die stamping, fine blanking, deep drawing, bending, tapping |
| Tolerance | ±0.01mm standard, ±0.005mm on request |
| Surface | Zinc plating, nickel, tin, gold, powder coating, passivation, anodizing |
| Die Size | Up to 1200 x 800 mm, 16-250 ton presses |
| Thickness | 0.05 - 6.0 mm sheet metal, wire 0.1 - 8.0 mm |
| Prototype | 7-15 days tooling, no MOQ on samples |
| Inspection | Full report per batch, CMM and optical measurement |
