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 Galvanised 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 galvanising 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. The steel thus produced in this process is a prepainted, prefinished and ready for further processing into finished products or components. to use material.

CRGO – Cold Rolled Grain Oriented Electrical Steel is available in various grades (Generally called M3, M4, M5 & M6). Manufacturing mills of CRGO Grain Oriented Electrical Steel guarantee the Core Loss figure at flux density of 1.5 Tesla in Case of CRGO Conventional Grain Oriented Electrical Steel Grades and in Case CRGO HIB Grades and CRGO HIB LS Electrical Steel at 1.7 Tesla,50 HZ.

Cold rolling is a metallurgical process in which metal is passed through a pair of rollers at a temperature below its recrystallization temperature. This process hardens the metal, by compressing and stretching the metal crystals. During the rolling process, the metal is annealed by heating it above the recrystallization temperature after every few rollings, to prevent it from becoming brittle and cracking. Cold rolled metal is given a “temper” rating based on the degree it was compressed. “Skin-rolled” metal undergoes the least rolling, being compressed only 0.5-1% to harden the surface of the metal and make it more easily workable for later processes. Higher ratings are “quarter hard,” “half hard” and “full hard”; in the last of these, the metal is compressed by 50%. Metal hardened by cold rolling can bend without breaking, although ductility decreases as the hardness increases. Quarter hard metal can be bent entirely back on itself, while full hard can only be bent 45°.

Hot rolled products are available in five product groups:

• Formable
• Extra Formable
• Structural
• Carbon Hardness

The temperature at which hot-rolling is completed results in an oxidized strip surface. This oxide film is termed hot-mill scale. Pickling removes the hot-mill scale. Pickled strip is generally supplied oiled to preserve this surface finish. Skin passing is a light cold rolling operation which suppresses the appearance of stretcher strain and minimizes coil break during uncoiling and subsequent processing. The surface texture and flatness are improved by skin passing.

Single-reduced TMBP is available in a wide range of sizes; double-reduced TMBP is also available. TMBP is available in a wide variety of surface finishes. TMBP is classified according to specification, steel type, temper designation, annealing method, surface finish, and other characteristics.

Specifications: Thinkness: 0.13mm-0.40mm Width: 600 mm-1050 mm Temper : T2,T3,T4,T5,DR8 Finish: Â Stone, Bright, Matt Coating: 2.8/2.8 , 5.6/5.6 Standard: GB/T2520-2000, JIS G3303, ASTM A623, DIN EN10202 Material: MR, SPCC, 08AL, Q195 Application: Widely used for making tea cans, paint/ industrial/ chemical package cans and metal printing and etc.

Gi-wire are Processed with low carbon steel wire, through drawing and electric galvanizing Gi wire, Annealed wire, Binding wire, PVC wire etc Meterial: Super carbon steel wire Feature: High tensile strength and good flexibility, uniform layer of zinc, corrosion-Resistance Packing: Plastic film inside and Hessian cloth or weaving bags outside Usage: Galvanized iron wire finds most use in binding of construction materials or weaving of galvanized wire mesh products.Galvanized steel wire can be supplied in coil wire, cut wire or U type wire. Galvanized wire is also used in weaving of wire mesh, fencing for expressway and construction.