Secondary GI

Product Detail

Secondary GI

Shandong Lantian specializes in Prime GI steel coils. There are 1.5% secondary steel coils during producing.

Product Grade: B (Secondary)

Specifications: ? There is air bubble, zinc gross, wave edge or other defects.

? We have strict telling grade standard so that most of secondary coils have no big influence to use.

? Very nice price can fit customers who has special using.

? They have perfect waterproof packing as Prime coils.

Specifications

Thickness

0.14-1.0 mm

Width

600-1300 mm

Zinc Coating

40-120g/m2

Single weight

3-10 tons

Coil ID

508/610 mm

Thickness Tolerance

±0.02mm

Width Tolerance

±0.2mm

Certificate

ISO9001:2008, ISO14001:2004, OHSAS18001:1999, SGS, BV

Steel Grade

SGCC, DX51D, DX52D, DX53D,ASTM, DIN, GB, JIS

MOQ

25 T

Payment terms

T/T or L/C

Delivery time

Within 30 working days after deposit

Spangle

Production Lines

Project

GI production line 1

GI production line 2

Max Speed

150-170 meters per minute

180-200 meters per minute

Capacity

0.2 million tons(planned)

0.25 million tons(planned)

Year of operation

2010

2011

Composition

Zn

C

Si

Mn

P

S

Al

98

0.100

0.200

0.400

0.100

0.045

0.50

As

Ti

Cr

Mo

Nb

B

N2

0.020

0.300

0.019

0.001

0.001

0.0001

0.002

Mechanical Property

Tensile Strength (Rm/Mpa)

Yield Strength (Rel/Mpa)

Elongation (A80mm/%)

Passivation

Bend

60°Gloss

Pencil Hardness

270~500

140~300

=22

Cr

0T

45±5

2H 45°

Characteristics of GI

Item

GI

GF(Zn-5%Al)

GL

AL

Service Life

Fair

Fair

Good

Good

Electrochemical Protection

Good

Good

Good

N/A

Welding Performance

Good

Fair

Poor

Poor

Application with Wet Concrete

Good

Poor

Very Poor

Very Poor

Thermal Resistance

Poor

Poor

Good

Excellent

Packing

? Normal waterproof horizontal packing

? Vertical waterproof packing for embossed coils, pearly-luster color coils and wrinkle finish coils

Exposure Test

Environment

GI Average corrosion

Al-Zn Average corrosion

g/?/y

um/y

g/?/y

um/y

Tough Manine Climate

140

9.8

16

2.2

Moderate Manine Climate

18

1.3

4

0.54

Industrial Climate

20

1.4

4.2

0.57

Countryside Climate

4

0.28

1.3

0.17

GI process

Certificate