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Chun Chi Grating Co., Ltd. "production meet customers’ policy, access to customers’ satisfaction and trust."
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Chun Chi Grating Co., Ltd strives forward to “quality”, “innovation”, and “integrity”, as our entrepreneurial spirit and achieves sustainable operation

Anti - theft ditch cover

 Ditch cover

 Hot - dip galvanized steel grating sheets - Dimensions and weights

ype

Ditch width(mm)

size(mm)

weight(kg)

d(蓋)

D(框)

d

D

Total

35

300

350

378

22.5

17.6

40.1

45

400

450

478

28.3

19.5

47.8

55

500

550

578

34

21

55

65

600

650

678

39.8

22.7

62.5

 Hot galvanized lattice cover construction instructions

1.anufacturing Equipment:

1.Should have high frequency automatic resistance manufacturing machine equipment。
2.Automatic square steel transfer equipment.
3.Cutting, polishing, leveling machine equipment.
4.Air compressor, CO2 welding machine, punch and other equipment.

2.Sampling:

1. The contractor and the manufacturer shall issue the quality guarantee (warranty) and self-inspection record form.
And issue a copy of the factory registration certificate.

3.material:

The steel is SS400 flat steel.

 Manufacturing method:

1.Lattice cover (except edge) to be high frequency automatic welding machine resistance welding all week welding, shall not cause erosion of base metal.
2.Edge: grid cover welding to the same size flat steel frame, welding slag clean.
3.After the lattice cover is made, it must be hot dip galvanized surface treatment.
4.Galvanized:
。inc liquid zinc liquid purity to be more than 95%, temperature 45 ℃ ~ 460 ℃.
。he use of zinc ingots to be more than 99% purity.
。alvanized amount: 610g / m2.
5.lat iron spacing: the center distance of 30mm ± 2mm.
6.Torsion square iron spacing: center distance 100mm ± 2mm, and every 30mm reverse 90 degrees.

 Material inspection:

1.ccording to the provisions of section 6 CNS 2473, tensile strength (between 41 ~ 52kgf / mm2), elongation (greater than 21%) and other two items of the test.
2.Galvanized amount: According to CNS 1247 3-2-4 regulations.

 Precautions:

This project galvanized grid cover products, should obtain ISO quality certification, or once the public sector quality control evaluation qualified qualified documents,
By the contractor in line with the radial manufacturing equipment manufacturing factory custom.

Each batch of products shall be inspected with the relevant units, and a notarized document (photocopy) of the court shall be attached to the inspection record.
And the completion of the project by the construction unit will be notarized copies of the above documents and test records into the final accounts for the closure of the project.