Prepainted Galvanized Steel Coils (PPGI)

-- Steady & Reliable Manufacturer --

Introduction

Prepainted Galvanized Steel Coils (PPGI) are produced by applying layers of organic paint to the surface of hot-dip galvanized steel sheet. This process enhances corrosion resistance and provides a wide range of aesthetic finishes. PPGI is one of the most versatile and cost-effective building materials globally, primarily used in construction, appliance manufacturing, and transportation sectors.

The galvanized substrate offers sacrificial protection against rust, while the paint coating acts as a further barrier, ensuring the longevity and durability of the finished product even in challenging environmental conditions.

Specifications

Parameter	Value/Range
Base Steel	Hot-dip Galvanized Steel (GI)
Coating Type	PE, SMP, HDP, PVDF
Standard	JIS G3312, ASTM A755, EN 10169
Thickness Range	0.15mm to 1.2mm
Width Range	600mm to 1250mm
Zinc Coating Mass (Z)	Z60 to Z275 g/m2
Paint Thickness	Top: 15-25 μm; Back: 5-10 μm
Coil Weight	3-8 Metric Tons

Buyer Insight: When selecting PPGI, prioritize the Zinc Coating Mass (Z) and the paint system (PVDF for harsh coastal climates, PE for general purpose).

Application

Construction: Roofing, wall panels, sandwich panels, structural elements for prefabricated buildings.
Home Appliances: Refrigerator doors, washing machine casings, freezer cabinets.
Transportation: Truck panels, interior train components.
Industrial: Cleanroom panels, storage tanks.

Advantages

Superior Corrosion Resistance: The combined protection of the zinc layer and the paint extends the service life significantly.
Versatile Aesthetics: Available in a vast range of RAL colors and surface finishes (matte, glossy, textured).
Formability: Excellent bending and forming properties without cracking the paint, making it ideal for roll-forming processes.
Cost-Effectiveness: Ready-to-use material eliminates the need for post-fabrication painting, saving time and labor costs.

Payment & Shipping

Payment Terms: Typically T/T (30% deposit, 70% against B/L copy) or secure Letter of Credit (L/C) at sight for large orders.
Delivery: FOB, CFR, CIF terms available. Standard lead time is 15-25 days after deposit receipt, depending on material specifications and order volume.
Packaging: Standard export sea-worthy packing, including plastic film, waterproof paper, steel banding, and protective metal sheet wraps to prevent damage during transit.

Frequently Asked Questions

Q: What is the lifespan of PPGI steel?
A: The lifespan is highly dependent on the environment (coastal vs. inland) and the coating system (PVDF offers the longest life, up to 20+ years). We offer warranty assurances based on specific specifications.

Q: Can PPGI be welded?
A: Yes, PPGI can be welded, but the heat from welding will burn off the organic coating and zinc layer in the affected area, requiring a post-weld touch-up with a zinc-rich primer and compatible paint to restore corrosion protection.

CONTACT WITH US

Zhejiang Tiannv Color Steel Co., Ltd.

Enjoying good reputation from all the customers worldwide, we are the reliable partner you can trust in China.

Zhejiang Tiannv Color Steel Co., Ltd was established in January 2003, located in Zhejiang Province, which is a Sino-Hong Kong joint venture with a registered capital of 50 million RMB. As China Prepainted Galvanized Steel Coils (PPGI) Manufacturers and Prepainted Galvanized Steel Coils (PPGI) Factory, the company covers an area of 50000㎡, and a workshop area of 12000㎡. Company’s main products are hot galvanized steel coil, aluzinc coil, prepainted steel coils (PPGI / PPGL), prepainted aluminum coil, printed PPGI for household appliance, roofing/corrugated PPGI sheet, and PPGI paint. Currently, we have 85 skilled employees, 5 professional engineers and 15 experienced office personnel. The manufacture capability of our production line is nearly 100,000 metric tons per year.

Our company produces high quality color coated steel, and imposes strict quality control over the prepainted steel coils. We use good quality hot-dip galvanized steel coils or Alu-Zinc coated steel coils as base sheet and strictly select coated paints, which gives quality promise to customers and competitive advantage for our company.