This is our Stamped Sheet Metal Enclosures Covers Collection — a series of precision-formed steel and aluminum covers designed to protect electronics, sensors, and mechanical assemblies in demanding i
This is our Stamped Sheet Metal Enclosures Covers Collection — a series of precision-formed steel and aluminum covers designed to protect electronics, sensors, and mechanical assemblies in demanding industrial environments. Each part ships with a guaranteed tolerance of ±0.05 mm, surface finish down to Ra 0.8, and a standard lead time of 10 working days from drawing approval. You get enclosures that fit your mating components without rework, made in China under strict BQUQ process control.
We use progressive dies with hardened tool steel inserts (62 HRC) and a four-post guide frame that keeps punch-to-die clearance uniform. This setup eliminates the progressive drift you see with cheaper tooling, especially on parts longer than 150 mm. Runout on flanged covers stays under 0.03 mm. For high-volume runs, we carbide-coat the wear surfaces, which extends die life to 1.2 million strokes before any dimensional change is detectable.
We stock SPCC cold-rolled steel (0.5–3.0 mm), SECC electro-galvanized steel, and 5052-H32 aluminum as standard options. For stainless requirements, we use SUS304 and SUS316L in thicknesses from 0.4 mm to 2.5 mm. When your cover needs extra stiffness or wear resistance, we offer induction hardening on selective edges up to 48 HRC. All raw coils come with mill certificates and are tested for yield strength before we commit them to production.
Every stamped cover goes through a two-stage deburring line — first a vibratory tumbler with ceramic media, then a dry abrasive belt pass. This removes all micro-burrs on the cut edges and flanges, giving you a safe-to-handle part rated to Ra 0.8 on visible surfaces. For cosmetic finishes, we offer brushed, bead-blasted, or powder-coated surfaces (60–120 micron thickness) in any RAL color. No secondary deburring is needed on your side.
Our press brakes are equipped with CNC backgauges and angle-sensing lasers that hold bend angles to ±0.5 degrees. Flange heights are controlled within ±0.1 mm, and we use a coining step on all critical bend radii to eliminate spring-back variation. For deep-drawn covers (depth > 40 mm), we simulate the draw in-house using AutoForm software, which reduces die try-out time and ensures consistent wall thickness distribution.
Every batch of Stamped Sheet Metal Enclosures Covers Collection parts is inspected on a coordinate measuring machine (CMM) with a resolution of 0.5 microns. We check all critical dimensions, hole positions, and flatness per your drawing. Additionally, we perform a 100% visual inspection on all visible surfaces for scratches, dents, or discoloration. A full dimensional report is included with each shipment, so you can skip incoming QC if your system allows.
All covers are individually separated with VCI (vapor corrosion inhibitor) paper and then packed in export-grade corrugated boxes with foam inserts. For aluminum parts, we use a neutral pH paper to prevent any oxidation. If you are shipping by sea, we add a desiccant pack and a heat-sealed PE bag for each unit. This keeps your parts rust-free for up to 12 months in warehouse conditions.
Our tool room builds all progressive and compound dies internally, which cuts tooling costs by 30–40% compared to outsourced tooling. We also perform tapping, countersinking, and riveting in-house, so you do not pay for separate suppliers. This integration is what allows us to offer no MOQ — even a single prototype cover is produced on the same line as a 10,000-piece order, with the same quality checks.
| Specification | Value / Range |
|---|---|
| Material Options | SPCC, SECC, SUS304, SUS316L, 5052-H32 |
| Thickness Range | 0.4 mm – 3.0 mm |
| Maximum Part Size | 600 mm x 400 mm |
| Hardness (Steel) | As-rolled 90 HRB; edge hardened up to 48 HRC |
| Dimensional Tolerance | ±0.05 mm on critical features |
| Bend Angle Tolerance | ±0.5 degrees |
| Surface Finish (Ra) | 0.8 µm standard; 0.4 µm on request |
| Flatness (after forming) | ≤ 0.1 mm per 100 mm length |
| Lead Time (prototype) | 5 working days |
| Lead Time (production) | 10 working days |
| MOQ | No MOQ — 1 piece accepted |
No MOQ — we accept single-piece orders for prototypes and ramp up to high-volume production without any price penalty.
Yes, send us your STEP or IGES file, and our engineers will verify formability, add bend reliefs, and suggest material thickness changes within 24 hours.
We follow the same CMM inspection and visual checks on a 1-piece lot as we do on a 10,000-piece run, and you get the dimensional report with the shipment.
For stamped covers without custom tooling, we ship in 10 working days; if a new die is required, add 15 days for tool build and sample approval.
For details on matching your cutting tools to the right material, see our CNC cutting tool selection guide. If you need to understand how tight we can hold dimensions, compare our specs against the CNC machining tolerances guide on our blog.
Send your drawing today for a firm quote within 12 hours. Email us at sc@bquq.com or reach us on WhatsApp at +86 13713157787. We will confirm material cost, tooling needs, and delivery date before you commit.
| 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 |
