Dense Perforated Drain Cover Making machines – Custom Roll Forming Machine Manufacturer

Slotted Drain Grate Forming Machine for Trench Drain Systems

This roll forming line produces dense perforated drain covers (grates) for trench drains, floor drains, and sewer channels. The machine forms flat or curved panels from 1.5‑3.0mm galvanized steel or stainless steel coil, with high‑density slotted or round hole patterns. Integrated punching creates non‑slip patterns and drainage openings. Roll forming speeds 5‑8 m/min, cut‑off tolerance ±1mm. Panels can be formed with anti‑skid embossing. Heavy‑duty uncoiler required. Ideal for civil engineering, industrial flooring, and municipal drainage projects.

Brand: SAVANY
Machine Type: Roll forming machine / Press brake / Custom production line
Color: Custom / Customizable
Capabilities: Roll forming, punching, shearing
Roll Forming Material: SPCC/SPCD/SPCE/SGCC/CGCC/304/5052
Profile Dimensions: Custom
Customization Level：100% custom
Payment Terms: T/T
Lead Time: 90 working days
Place of Origin: Guangdong, China

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Description

Dense Perforated Drain Cover Cold Roll Forming Lines

– High‑Load Drainage Grates for Industrial Use

The dense perforated drain cover roll forming machine is a heavy‑duty line for manufacturing steel drain grates used in trench drain systems, industrial floor drains, and municipal sewer channels. These covers must withstand heavy loads (forklifts, trucks) while allowing rapid water drainage and preventing debris entry.

Why roll forming for drain covers?

Traditional drain covers are cast iron or stamped from sheet metal. Roll formed grates are lighter, have consistent hole patterns, and can be produced in long continuous lengths for custom trench drains. They also offer better corrosion resistance when made from stainless steel.

Production process:

Uncoiling – Heavy‑duty hydraulic uncoiler (10‑15 tons), coil width up to 500mm.
Straightening – Leveling rolls for thick material.
High‑density punching – Servo‑controlled punch press creates hundreds of slots or round holes per meter. Hole patterns programmable (staggered, linear, or custom).
Embossing (optional) – Creates anti‑skid patterns (diamond, chevron).
Roll forming – 6‑10 passes flatten and stiffen the panel, optionally forming a slight crown for water run‑off.
Edge folding – Forms hemmed edges for safety and rigidity.
Cut‑off – Heavy‑duty flying shear cuts to length (±1mm).
Stacking – Powered stacker for heavy grates.

Typical drain cover specifications:

Parameter	Range
Cover width	100‑500 mm
Cover length	1000‑6000 mm
Material thickness	1.5‑3.0 mm
Perforation size	5‑15 mm
Open area	30‑60%
Line speed	5‑8 m/min
Cut‑off tolerance	±1 mm

Applications:

Trench drain covers in warehouses
Industrial floor drains
Parking lot drainage grates
Municipal sewer covers
Food processing plant floor drains (stainless steel)

Optional features:

Automated welding of support ribs
In‑line load testing
Protective coating application

Included services:

Installation guidance
Operator training
Spare parts list
12‑month warranty, lifetime remote support

Lead time: 90 working days.

Contact SAVANY with your drain cover drawing (width, thickness, hole pattern, load rating) for a customized quotation.