HOT GALVANIZING
Normally,Hot galvanizing will be carried out after end welding
process,For the thickness of bearing bars is not less than 5mm,the
weight of average Zinc Layer will not be less than 610g/m2.When the
thickness of bearing bars is less than 5mm,the weight of average
Zinc Layer
Will not be less than 460g/m2. The quality and requirements after
hot galvanizing are subject to the standards of GB/T 13912.
LACQUERING
To again protection layer through the ways of spraying,brushing and
soaking.
SERVICE LIFE OF HOT GALVANIZING
Coated zinc thickness of 100um,the anticipated life of products in
various circumstances.
ANTI-ACID AND ALKALI CORROSSION CAPACITY
The range of PH6 to PH12.5,a stable protective film will be formed
on the zinc surface.it has good
anti-corrosive property.
CALCULATION OF WEIGHT AND AREA
1. The weight of gratings varies after end welded and hot
galvanizing process. For normal industrial platform using 30mm
pitch bearing bars,the weight will increase 12%;14% for 40mm pitch
bearing bars and 16% for 60mm pitch bearing bars.
2. For those gratings processed according to the size supplied by
customer,calculation will based on the actual area(including cutout
and tap)
3. For those gratings processed according to customer’s
drawing,calculation will be based on the
total outside size(including cutout and tap)
4. For unusual size of grating cutouts shall not deduct from the
length and width.
Description:
(1) Structure: Welding with flat steel and cross/round bars with
certain distances.
(2) Features: High strength, light structure, high bearing.
(3) Surface: The hot dipped zinc coating gives the product
excellent anti-corrosion.
| Common Specification Of Steel Grating |
| Material Standard | ASTM A36, A1011, A569, Q235, S275JR,Stainless steel 304, Mild steel & Low carbon steel, etc |
Bearing Bar (width*thickness) | 25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5,
50x5, 65x5, 75x6, 75x10…..100 x10mm etc; I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc US standard: 1''x3/16'', 1 1/4''x3/16'', 1 1/2''x3/16'',
1''x1/4'',1 1/4''x1/4'', 1 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 1
1/2''x1/8'' etc |
| Bearing Bar Pitch | 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3,32.5, 34.3, 35, 38.1, 40,
41.25, 60, 80mm etc. US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc. |
| Twisted Cross Bar Pitch | 38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc |
| Surface treatment | untreated(black), hot-dipped galvanized ,powder coated, electroplate, painting or as per customers’ requirement. |
| Grating Style | Plain / Smooth, Serrated /teeth, I bar, serrated I bar |
| Packing | 1) LCL(less than one container load): packed with plastic film then
on the pallets 2) FCL(full container load): nude packing 3) Other special package :according to customers' requirements. |
| Payment Term | T/T,L/C, Paypal, Western Union, MoneyGram, |
FAQ
1.Are you factory or Middleman?
We are professional manufacturer in fence since 1990, our factory
is 30000 square meters located in Hebei,
China.
2.How long can be your products survived?
The products of our factory can be used at least 15 years as
standard;But we also
according the demand of clients,
3.Do your factory provide warehousing services?
There is a place of our factory, which is specially used to store
goods, after finished of
goods.The customers can storage for free.
