Audited Supplier
PPGI is pre-painted galvanised iron, also known as pre-coated steel, coil coated steel, color coated steel etc., typically with a hot dip zinc coated steel substrate.
The term is an extension of GI which is a traditional abbreviation for Galvanized Iron. Today the term GI typically refers to essentially pure zinc (>99%) continuously hot dip coated steel, as opposed to batch dip processes. PPGI refers to factory pre-painted zinc coated steel, where the steel is painted before forming, as opposed to post painting which occurs after forming.
The hot dip metallic coating process is also used to manufacture steel sheet and coil with coatings of aluminium, or alloy coatings of zinc/aluminium, zinc/iron and zinc/aluminium/magnesium which may also be factory pre-painted. While GI may sometimes be used as a collective term for various hot dip metallic coated steels, it more precisely refers only to zinc coated steel. Similarly, PPGI may sometimes be used as a general term for a range of metallic coated steels that have been pre-painted, but more often refers more precisely to pre-painted zinc coated steel.
Zinc coated steel substrate for PPGI is typically produced on a continuous galvanizing line (CGL). The CGL may include a painting section after the hot dip galvanising section, or more commonly the metallic coated substrate in coil form is processed on a separate continuous paint line (CPL). Metallic coated steel is cleaned, pre-treated, applied with various layers of organic coatings which can be paints, vinyl dispersions, or laminates. The continuous process used to apply these coatings is often referred to as Coil Coating.
| Location | category | value | |||||
| Executive standard | National standard | JIS | |||||
| Standard | SGCC SPCC | ||||||
| Cold rolled substrate | Width specification | Cold rolled substrate thickness | Including metallized layer, the thickness after painting | Label thickness | |||
| 1200mm | ≥0.41mm | ≥0.46mm | ≥0.45mm | ||||
| Size deviation | Width tolerance | Upper deviation +4mm | |||||
| Lower deviation 0 | |||||||
| thickness | Upper deviation +0.05mm | ||||||
| Lower deviation 0 | |||||||
| Yield Strength | >300MPA | ||||||
| tensile strength | 270-500MPA | ||||||
| elongation after break | More than 20% | ||||||
| Steel coil inner diameter | Standard: 508mm,Except for other agreements | ||||||
| metal coating | alloy composition | AlZnMg or galvanized AlMg | |||||
| Total Weight of Plating Both Sides (Outside/Inside) | 150g/ (75/75 or 85/65) | ||||||
| Neutral salt spray test | The surface of the board (without passivation, anti-fingerprint and other treatments on the surface) has a neutral salt spray test of more than or equal to 2500 hours, and there is no red rust on the surface. | ||||||
| When the salt spray test on the wound surface (end surface) is greater than or equal to 1200, there is no red rust on the surface. | |||||||
| PPGI paint | PE coating structure standard (μm) | Paint structure | 2/1 | outside | ≥25 | ||
| Inside | ≥7 | ||||||
| pencil hardness | Not less than HB | ||||||
| Specular Gloss of Topcoat | Glossiness of finish paint mirror surface: ≥40 degrees | ||||||
| T bend value | 2T | ||||||
| Impact energy | Not less than 9J | ||||||
| Neutral salt spray test | Greater than or equal to 1500h without bubbles | ||||||
| UVB-313 | greater than or equal to 700h | ||||||
| PPGI use environment | humidity | 20% to 90% | |||||
| temperature | Min -45°C, Max 43°C | ||||||
| unit ammonia | <30ppm | ||||||
| unit carbon dioxide | <7000ppm | ||||||
| unit oxygen | 21% | ||||||
| unit hydrogen sulfide | <5ppm | ||||||
1.Who are we?
We are a GB/T 19001-2016/ISO 9001:2015 certified professional total solution provider and supplier of steel products.
2. What can we supply?
We provide one-stop steel sales and professional steel supply chain management. Our main products include steel coil, steel plate, steel profile, steel pipe, steel structure and wind power tower barrel.
3.what do we specialize in?
We specialize in providing medium and heavy plates including shipbuilding board, High strength steel plate, weathering resistant steel, corrosion resistant steel plate, abrasion resistant steel plate, boiler and pressure vessel steel plate, high-rise building steel structure and wind power tower barrel.
4. Who are our cooperative factories?
As a steel company that has been in this line of business for many years, we have established profound and firm relationships with major large China's steel manufacturers including Shandong Steel, AN STEEL, Baogang Steel, Rizhao Steel and Nanjing Steel and gained great reputations from domestic and overseas clients.
5. what is our payment term?
30% T/T advance and 70% T/T balance before delivery.
6. Can I have a free sample?
Yes, a sample in small size is provided for free of charge, but the client shall bear delivery fee.
7.What is lead time and delivery time?
We will arrange production immediately upon the receipt of advance payment and shop to you after the payment of balance. 
