Product Overview

The Double Layer Roofing Sheet Machine is engineered for professional roofing contractors, regional building material distributors, and pre-engineered metal building fabricators who require rapid switching between industrial trapezoidal roofing and corrugated cladding without investing in two standalone roll formers.

Accommodating prepainted galvanized steel (PPGI), galvalume (PPGL), aluminum, and galvanized coils with feeding widths up to 1250mm and material thicknesses from 0.3mm to 0.8mm (customizable up to 1.0mm). Deck 1 produces 840mm effective cover trapezoidal IBR panels (25mm rib height), while Deck 2 outputs 762mm effective cover sinusoidal wave corrugated panels (17.5mm wave height).

1: Double Layer Roof Tile Machine Overview & 840/762 CAD Blueprints 

Key Technical Features

• Independent Two-Tier Operation: Operators toggle between trapezoidal sheet and corrugated wave sheet production via the digital touchscreen within seconds without manual mechanical adjustments.
• Hard Chrome Plated Rollers: All forming roller dies are precision CNC machined from 45# forged carbon steel and plated with 0.05mm hard chrome to eliminate coil scuffing and preserve painted finishes.
• Independent Upper & Lower Hydraulic Cutters: Dedicated profile-matched shear blades made of vacuum heat-treated Cr12MoV die steel cut cleanly without burrs or rib flattening.
• Rigid 350H Bed Frame: Annealed structural H-beam foundation eliminates mechanical vibration and guarantees station alignment at continuous rolling speeds of 15-20 m/min.
• Heavy Synchronized Chain Transmission: Multi-tier synchronized drive chains transmit smooth torque from the 7.5kW heavy-duty motor across all forming stations.

2: Dual Hydraulic Cutting System with Upper & Lower Independent Dies

Technical Specifications

3: Double-Row Heavy Chain Drive & Chrome Roller Stations

Dual-Tier Forming Stand Construction

The two-tier rolling assembly is constructed with cast-iron side stands and high-strength tie rods mounted onto the normalized 350H frame. The upper and lower roller sets are independently driven through heavy double-row chains and precision sprockets.

• Independent Roller Rows: Upper tier utilizes 26 forming rows for sharp trapezoidal ribs; lower tier features 19 forming rows for smooth corrugated waves.
• Precision Bearings & Shafts: High-precision self-aligning bearings with Ø70mm solid shafts withstand heavy sheet forming pressures without deflection.
• Safety Protection Covers: Yellow sheet metal safety guards enclose all chain drives, keeping operators safe and preventing factory debris accumulation.

4: Workshop Factory Floor Forming Color-Coated Sheet 

Dual Roof & Wall Profiles Blueprint Specifications

Both manufactured panels comply with international building cladding benchmarks, offering outstanding load-bearing capacity and fast installation:

5: CAD Cross-Section Blueprints for Profile A & Profile B 

Broad Industrial & Commercial Applications

Combining trapezoidal roofing and corrugated wall/roof panels on one line fulfills complete steel building envelope demands:

• Industrial Warehouses & Workshops: 840 Trapezoidal panels offer superior water drainage and long spanning capacity under wind loads.
• Agricultural Hangars & Exterior Walls: 762 Sinusoidal wave sheets provide economical cladding with rapid mechanical fastening.
• Commercial Shopping Malls & Prefab Buildings: Dual-panel supply gives contractors immediate project flexibility without subcontracting.

Supply Scope & Ocean Shipping

Standard supply scope covers complete turnkey machinery: 5-ton manual decoiler (hydraulic decoiler optional), dual-deck roll forming main machine on 350H frame with protective covers, dual independent hydraulic cutting unit, standalone hydraulic pump pack, PLC digital control cabinet, and runout support tables.

All precision chrome rollers and shafts are coated with anti-rust protective oil. The 12-ton heavy roll forming chassis is firmly secured inside a 40ft HQ container with heavy-gauge steel cables and hardwood wedges. The electrical control console and hydraulic station are hermetically wrapped in waterproof film and crated in export plywood cases.

Quality Standards & Certifications

Manufactured in compliance with ISO9001 quality management benchmarks, Bureau Veritas (BV), and STV standards. The production line holds official CE compliance certification under Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU.

6: CE Certification & ISO9001 Quality Management Verification 

Frequently Asked Questions (FAQ)