It is proceeding by the chemistry degrease and electroanalysis with the cold rolled steel coil and sheet,clean the oils on the surface of steel, sufficiently heated to the proper temperature for zinc coating, pass by level up, strain rectify, and then passivation or annoit etc.
PPGI Galvanized Steel Corrugated Roofing Sheet Specification
| Product Name | PPGI Galvanized Steel Corrugated Roofing Sheet |
| Basal plate | 1. Hot dip galvanizing 2. hot dip aluminium-Zinc (55%aluminium,43zinc,2%si) |
| Application | 1.Industrial and civil buildings, 2.warehouses and special construction, 3. large span steel structure of the roof, walls and interior and exterior decoration |
| Standard and Material | Japan standard - JISG3302 (SGCC) Chinese standard - GB2518 (SGCC) Europe standard - DIN10142(DX51D+Z) |
| surface treatment | Chromated ,full hard or soft quality ,regular spangle,unoiled |
| Production process | Cold rolled steel coil-uncoil-Pickling-Annealed-hot dipped galvanizing-cooling -surface treatment |
| Thickness | 0.12-1.0mm |
| Width | 750-1250mm(before corrugation) 600-1100mm(after corrugation) |
| Length | 1000-3500mm or as require |
PPGI Galvanized Steel Corrugated Roofing Sheet Features
1) Protects against corrosion in air and water, and has allowed corrugated metal roofing to become one of the most durable and withstanding roofing materials available
2) Has features of easy installation, high strength, low in costs, durable and nice appearance
PPGI Galvanized Steel Corrugated Roofing Sheet Quality Control
Strict procurement process---skillful technical workers---final products inspection (resistance to corrosion,salt spray test,exposure test,machinability,thermal resistance)---standard packing
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