اللغة العربية
Specification for Standing Seam Roofing Panel Roll Forming Line
The line will form sheet metal (galvanized/pre-painted steel) into standing seam roofing panels with precise interlocking seams (“rąbek”) of superior quality. The machine should be designed for continuous industrial use, capable of high throughput while maintaining excellent profile accuracy and lock formation.
- Product: Standing Seam Roofing Panels (double-lock seam)
- Material: Galvanized/Aluzinc steel (color-coated), optional aluminum/copper
- Material Thickness: 0.45–0.70 mm (nominal ~0.50 mm)
- Steel Yield Strength:250–350 MPa
- Input Coil Widths: 625 mm & 416 mm
- Profile: Seam height ~25 mm, interlocking male/female edges
- Panel Lengths: 1.5 to 12 meters (programmable)
- Roll Forming Speed:15–20 m/min (adjustable via inverter/PLC)
Material and Profile Requirements
• Material: Galvanized or Aluzinc steel, typically pre-painted (color-coated), with thickness ranging from 0.45 mm to 0.70 mm (nominal ~0.50 mm). This falls within the standard 0.3–0.8 mm range for such roll formers . The machine must accommodate the full thickness range without adjustments that degrade quality.• Steel Properties: The steel is moderately soft (e.g. 250–350 MPa yield strength) for roofing use. The machine should also handle other metals like aluminum or copper of equivalent thickness, if needed (optional).
• Coil Width Formats: Two input coil widths will be used: 625 mm and 416 mm (these correspond to two panel width formats as per the profile design). The machine must allow quick changeover between these two coil widths using a single set of roll-forming rollers (no separate roller sets for each width). An adjustable/sliding roller system is required – e.g. a mechanism to slide roller stations laterally to accommodate different widths . The adjustment can be manual (synchronized screw jacks or handwheel) but should be convenient and precise, allowing the width change according to specification without extensive downtime.
• Profile Geometry: The profile is a classic standing seam roofing panel with male/female interlocking edges (suitable for mechanical seaming into a double-lock seam). Seam height ~25 mm (1 inch) or per finalized design. The exact cross-sectional profile will be provided in drawings – the machine must form this profile exactly, ensuring that panel seams/locks mate perfectly for a weather-tight fit. Both panel formats (from 625 mm and 416 mm coil) will have the same seam design, just different overall panel width.
• Panel Finish: The formed panels should have a flat, high-quality surface (no warping or excessive “oil canning” in the flats) and precisely formed locks. The standing seams must be uniform along the length, allowing easy clipping and seaming in the field. This is a premium-class product, so even minor defects (waviness, misalignment, scratches) are unacceptable.
Production Capacity and Performance
• Line Speed: The roll former should operate at approximately 15–20 meters per minute forming speed under normal conditions . The speed should be adjustable (via inverter/PLC) to optimize forming quality for different metals and thicknesses. A top speed of ~20 m/min (which is standard for similar standing seam lines ) is acceptable. This speed corresponds to a potential output of up to ~1200 linear meters of panel per hour in continuous operation. In practice, with start/stop cutting, the machine must reliably achieve at least 150–200 linear meters of finished panels per hour of premium quality output.• Annual Output: The equipment is expected to produce approximately 1,000,000 m² of panels per year from 625 mm coils and 500,000 m² per year from 416 mm coils (total ~1.5 million m²/year). This high throughput means the machine design should be robust for continuous daily operation (multiple shifts). All components (motor, transmission, cutters, etc.) should be rated for heavy-duty use to meet this volume.
• Length Range: Panels will be produced in various lengths (as required by roofing projects). Typical panel lengths might range from ~1.5 m up to 12 m. The control system should allow programming of cut lengths and batch quantities. The cutting accuracy must be high – length tolerance of ±1 mm or better on the cut panels .
• Changeover and Setup: Changing from one coil width to the other, or to a different panel length, should be efficient. The width change (as noted, via sliding rollers) should take minimal time (target < 30 minutes) and not require full roll tool replacement. Likewise, adjusting for thickness or material should be minor (e.g. slight roller gap or pressure tweaks). The line should come with necessary gauges or indicators to reset positions accurately when switching formats.
Machine Configuration and Components
Decoiler
• Type: Hydraulic expanding decoiler with motorized payoff is preferred (to handle heavy coils and feed smoothly). Manual decoiler is not sufficient given the coil weights and production volume.• Capacity: 5-ton minimum coil capacity (expandable mandrel) . However, a higher capacity (e.g. 8 Ton) is recommended for 625 mm wide coils to reduce coil change frequency. The decoiler should support coil inner diameters around 508 mm (450–550 mm range adjustable)  and maximum outer diameter ~1200–1250 mm.
• Features: Include a braking system to avoid over-spin, and a coil car or loading assistance if possible (optional) to safely mount coils. The decoiler should have an adjustable tension brake or motor to maintain proper strip tension into the feeder.
Sheet Feeding & Guiding
• Provide an entry feeding guide to center the strip into the first roll-forming stand. Adjustable guide rails or side rollers are needed to accommodate both 416 mm and 625 mm widths. The feeding apparatus should be equipped with hand-wheel adjustments and lateral guides (with measurement scales) to quickly align the strip . This ensures the material enters the rolls perfectly centered and straight for both format widths.• Incorporate feed rollers with suitable surface (knurled or rubberized) if needed to help pull in the sheet without slipping or scratching. Ensure the leading end of the coil (especially if pre-cut sheets are used) can smoothly enter the rolls. If using pre-cut lengths, consider a guiding table or pinch rollers to assist the feed.
Roll Forming Unit
• Frame and Stations: Heavy-duty steel frame construction (welded steel plate or H-beam frame) to ensure rigidity and alignment of rollers  . A middle plate or cast structure is acceptable as long as it maintains precision under load. Number of roll-forming stations should be sufficient to form the profile gradually without deforming the metal – typically around 18 stations for a complex standing seam profile  (the exact number can be adjusted based on the profile design). The stations should be designed such that when the width is adjusted, all relevant rollers move to the correct positions for the new width.• Adjustable Width Mechanism: As noted, the machine must use one set of rollers for both panel widths. A synchronized adjustment mechanism should move the outer roll stations or side guides to account for the different coil width (difference of ~209 mm). A proven solution (used in portable standing seam machines) is a dual-screw system that moves the roller carriages symmetrically . In our case, the mechanism can be manual (hand crank or motorized adjustment) – but it should reliably position the rollers for 416 mm or 625 mm width (and potentially any width in between, if the system allows continuous adjustment). There should be stops or scales to easily set the exact required positions for each format. Only a single roller tooling set is to be provided that covers both widths – no duplicate roller sets.
• Roll Tooling: Rollers material should be high-quality hardened steel with hard chrome plating for wear resistance . All rollers must be precisely machined to the exact profile shape. Critical surfaces should be finely polished or use polymer/composite inserts to prevent marking the painted metal. The design should avoid any damage to the coil coating – for example, using nylon or polyurethane rollers at final forming steps or as pressure rollers can eliminate scratches on the color finish . This is extremely important for a premium product (no paint scratches or scuffs from forming).
• Shafts and Drive: Roller shafts of ample diameter (around 70–80 mm solid steel)  to prevent deflection. The roll stations should be chain-driven or gear-driven from the main motor  . A chain drive is acceptable (common in these machines ), but the chain should be heavy-duty with good tensioners to ensure synchronized rotation. All shafts should rotate smoothly in quality bearings. Lubrication provisions should be in place for the chain/gear and bearings (either central lubrication or easily accessible grease points).
• Main Motor: Sufficient power to handle the steel thickness at full speed. Similar machines use ~5.5 kW main motor for 0.5mm steel ; we recommend ~7.5 kW to provide extra torque, especially if the machine will run at maximum speed and possibly thicker 0.7mm material. The motor should be coupled via a robust reduction gearbox or chain sprocket system to drive the rollers. Speed control via a frequency inverter (VFD) integrated with the PLC for smooth acceleration and deceleration is required.
• Forming Quality: The roll forming sequence must be engineered to avoid excessive stress on the material. Gradual bends are preferred (spread the profile forming over many stations) to ensure the panel lies flat and the locks are crisp. There should be no visible imprints or roller marks on the finished panel surface. All bending radii and angles per design must be achieved consistently. The machine should handle the thinner 0.45mm without wrinkles or buckling, and the thicker 0.70mm without overload or twist.
Cutting System
• Cut-Off Type: A post-forming shear is required to cut the continuous formed panel into desired lengths. Flying (on-the-fly) cutting is not required – a stop-to-cut operation is acceptable to simplify the machine. The cut can occur after the panel exits the roll former, once the preset length is reached (the line will pause momentarily for the cut).• Shear Mechanism: Provide either a hydraulic shear or an electromechanical shear to do the cut. The cutting unit must be robust and able to cleanly shear the panel profile (including through the standing seam ribs) without distorting it. A guillotine-style cutter with blades matching the profile contour is expected. The blade material should be a hardened tool steel (e.g. Cr12 or equivalent, heat treated) for long life . If hydraulic, include an appropriately sized hydraulic power unit (e.g. ~4 kW pump as per similar machines  ). If electric, use a servo motor or brake motor drive to actuate the shear quickly. In either case, aim for a cut cycle of only a few seconds to minimize downtime.
• Cut Accuracy: The system should use an encoder on the material feed to measure length and the PLC to trigger the cut at the correct length. As noted, length accuracy ±1 mm is required . The cut edges must be straight and burr-free. The shear should be well-guided (with appropriate blade clearance) to avoid twisting the panel during cut – possibly include a clamping device that holds the panel steady as it is being cut for a precise result.
• Pre-Cutting Option: The manufacturer may propose an alternative “pre-cut and then form” method (where sheets are cut to length before entering the roll former). However, the preferred approach is continuous roll forming with post-cut, as it is more efficient for long panels. If a pre-cut method is suggested as a cost-saving option, it must still guarantee profile quality and production rate (feeding separate blanks through the machine without damage). We currently lean towards a traditional post-forming shear unless pre-cut provides a clear advantage.
• Cut Length Adjustment: The length should be easily set on the HMI/PLC. The operator can input different lengths and quantities for automatic batch production. The control should allow multiple lengths in sequence (e.g., produce X panels of one length, then Y panels of another length, etc., if needed for a project).
Run-out Table / Stacker
• After cutting, the finished panels (which can be long and heavy) need to be supported and collected. The line should include at least a run-out conveyor or support table (~3–6 meters long) after the shear. This can be a simple gravity roller table or a belt conveyor that carries the panel out. It must be long enough to support the panel to prevent it from dropping or getting scratched. For very long panels (e.g. 10+ m), the manufacturer should propose a way to handle them (possibly a two-stage support or manual handling).• Optionally, an automatic stacking system for cut panels can be offered (to accumulate panels and then remove by forklift or crane). However, this may be beyond the basic configuration. At minimum, provide soft material supports or brackets where the panel slides out so that the painted surface is not damaged (e.g. plastic-covered rollers or wooden table surface). An operator should be able to remove or slide away the panel safely after each cut.
Control System and Automation
• PLC Control: The line will be controlled by a PLC for automated operation. It should handle sequencing of decoiler (if motorized), the roll former drive, length measuring, and the cut trigger. The system should allow the operator to input production parameters (panel length, batch count, line speed, etc.). A user-friendly touchscreen HMI is required for easy operation and monitoring. The interface language should be English (with clear labels and units).• Functions: The control system must include automatic length measuring (using an encoder or laser sensor on the moving strip) and auto stop for cutting at set lengths. It should count panels produced and stop when the target count is reached. Batch controls (e.g., produce N panels then stop) and a length preset library would be useful. Also include manual jog controls for setup, and emergency stop integration.
• Automation Level: Aside from the automatic length cutting, other adjustments (like width change) can be manual as specified. The machine does not require automated width adjustment or profile changeover – simplicity and reliability are prioritized. All motors (main drive, decoiler, cut) should be interlocked via the PLC for coordinated operation (e.g., the main drive stops during cutting, etc.).
• Sensors and Safety Interlocks: Include necessary sensors (limit switches, photoeyes) to prevent issues – for example, a sensor to detect the end of coil, or to ensure the sheet is in position before cutting. Emergency stop buttons should be placed at key points (decoiler, control panel, opposite side of machine) to immediately halt the line in case of an issue. Safety guards should cover any exposed chains, gears, or the shear blade area to protect operators.
Power and Voltage
• Electrical Supply: The machine must be built for the local power supply in Almaty, Kazakhstan. Available service is 380 V, 50 Hz, 3-phase . All motors, drives, and the control system should be compatible with this (and a neutral or ground as per standard). Control circuits can be 24 V DC or 110 V AC per typical design.• Power Consumption: Total installed power is estimated on the order of ~10–15 kW (including main motor ~5-7.5 kW, hydraulic pump ~4 kW, others). The manufacturer should provide the actual calculated power requirements. Ensure the electrical system can tolerate local voltage fluctuations and is safely grounded.
• Plug/Connection: The line should have a suitable main disconnect and be wired to a single power drop. We will arrange supply of 380 V / 50 Hz to the control cabinet. All electrical wiring and panels should follow IEC/CE standards (or equivalent GOST standards if applicable in Kazakhstan).
Quality and Safety Requirements
• Profile Quality: The primary goal is premium quality output. The formed panels must have accurate dimensions: consistent panel width, seam height, and lock shape from end to end. The male/female locks should engage smoothly by hand before seaming. Critical dimensions (e.g., lock tab width, flange angles) should be within tight tolerances (on the order of ±0.1 mm for critical lock fit areas). The machine must maintain alignment so that there is no lateral drift of the profile; the panel should come out straight with no curvature along its length. Any slight bow or camber should be minimized (target <1 mm over 3 m length, for example).• Surface Protection: As mentioned, absolutely no damage to the panel’s painted surface is allowed during forming. The design should incorporate features to protect the surface – e.g., use of polymer composite rollers or coatings on rollers as needed, proper material flow to avoid scratches . Also, avoid sharp edges on guides; all guiding and contact points should be smooth or guarded (felt, plastic, etc.). We will likely use panels with a thin plastic protection film at times – the machine should not tear or pull off this film during forming.
• Lock Precision: The formed locks (edges) must be precisely shaped so that during installation, the seaming tool can fold them down uniformly. A “premium” standing seam means the locks should close tightly with no gaps and provide a clean look. The manufacturer should ensure the roll tooling is designed (via CAD/CAM) exactly to our profile specifications. We expect to approve the profile roll-forming design/drawing before fabrication.
• Cut and End Quality: The cut edges of panels should be clean and square. The shear should not deform the panel ends. If slight burring occurs, it should be minimal (no sharp burrs). The end of the seam leg might require a specific form (depending on if a hook or similar is needed at the end) – the machine’s cut or an extra end-forming step should accommodate that if required by profile (to be discussed; possibly not needed if manual seaming is done separately).
• Machine Reliability: Given the high production volume, the machine should be built with quality components. Bearings, chains, electronics, and hydraulic parts should be from recognized brands to ensure longevity. We expect minimal unplanned downtime. The design should allow easy maintenance – e.g. easy access to lubricate or replace rollers, readily available spare parts (like standard bearings, chains, etc.).
• Safety Features: The line must include standard safety measures: emergency stop switches at multiple locations, guards on moving parts, overload protection on motors, and hydraulic relief valves. Any shear blades should have a guard to protect the operator (except at the moment of cut). Electrical wiring should be in conduits or trays, with proper grounding. The control system should fail-safe (e.g., power loss causes the machine to stop safely). Ideally, the machine should meet CE safety requirements (the manufacturer claims CE certification on their machines , which is desirable). Documentation for safe operation (in English) should be provided.
Additional Provisions and Documentation
• Installation & Training: The supplier (ZTRFM) should assist with installation and commissioning. The machine will be installed in a rented industrial hall in Almaty – standard factory conditions (indoors, ambient temperature ~5–40°C). Ensure the design can handle the environment (electrical cabinets sealed against dust, etc.). After delivery, we may request the supplier to send a technician to supervise installation and train our operators on setup, operation, and maintenance.• Documentation: Provide complete documentation in English, including: electrical schematics, PLC program description, user manual, maintenance schedule, spare parts list, and the profile drawings. The manual should clearly explain how to adjust the machine for the two different widths, how to set lengths in the controller, and all safety and maintenance procedures.
• Spare Parts and Tools: Include a basic spare parts kit: at minimum, one set of cutting blades, fuses, a few critical bearings, and any special tool required for adjustment. Also provide any special wrenches or alignment tools needed for roller adjustment or blade changing.
• Warranty: A standard warranty of 1 year (preferably 2 years) on the equipment should be provided, covering parts and workmanship. During the warranty, any defective components should be replaced or repaired without cost (excluding wear parts and shipping). Technical support should be available for troubleshooting (via email/phone or remote assistance).
• Acceptance Criteria: Final acceptance of the line will require a performance test. The machine should demonstrate it can produce the standing seam panels at the required quality and speed. We will verify profile dimensions, seam lock fit, surface quality, and cutting accuracy on sample panels from both 625 mm and 416 mm coils. The annual throughput capability will be evaluated by running the machine at extended duration. Any deficiencies or deviations from this specification will need to be addressed by the manufacturer prior to final acceptance.
This standing seam panel roll-forming line must be designed as a high-quality, efficient production system. It should incorporate the ability to switch panel widths easily, form premium-quality profiles, and run reliably at the necessary speed to meet our volume targets. All details in this specification should be reflected in the machine design and quotation. We look forward to ZTRFM’s proposal that meets or exceeds these requirements, and to a successful collaboration on this project.
Sources: The above requirements are informed by industry standards and similar roll-forming machinery capabilities from ZTRFM.
