Specification of Steel Grating:

1. The shape of bearing bar: Plain type (may be omitted in the symbol of steel grating), Serrated type and I-Shape type

2. Bearing bar pitches can be 12.5, 15, 20, 30, 30.16, 32.5, 34.3, 40, 60mm, of which 30mm & 40mmare recommended.

3. Cross bar pitches can be 38, 50, 60,100mm, of which 50mm & 100mm are recommended.

4. Surface treatment: Hot-dip galvanizing, paint or other anti-corrosive coatings are available, of which hot-dip galvanizing is generally recommended.

5. Material: Q235 in line with GB/T700 steel

6. Tolerance

The allowed deviation of length is +0/-5mm, while the allowed deviation of width is +/-5 mm.

The non-perpendicularity of bearing bar is allowed no more than 10% of width of bearing bar.

Cross bar surface should not surpass bearing bar surface 1mm, beginning & end of cross bar should not surpass the end surfaces of two sides of grating 2mm.

7. Standard:

Technical Information

The most popular specifications of steel graing:

1.Steel grating with 30mm bearing bar pitch is the most widely used in industrial area. Among the general series, it maintains the strongest resistance to impulsive force.

2.Steel grating with 40mm bearing bar pitch is one of the most economical & lightest types. It should be the best choice to customer on the occasion when the clear span is small.

3.Steel grating with 60mm bearing bar pitch & 50mm cross bar pitch is developed specially for mining industry. As it can avoid the mineral splashing down on board, it’s appointed to use in fabrication plant, transfer terminal & other areas of mining.

Steel Grating Saddle Clip:

Type A saddle clip- composed of a top board with double hooks, a holding down plate with teeth and M8 inner-hexagon-bolt.

Type B saddle clip- composed of a top board with double hooks (one of hooks can draw together the two neighboring steel gratings), and a holding down plate with teeth and a M8 inner-hexagon-bolt.

Type C saddle clip-composed of a top board with double hooks and a M8 hexagon-bolt can be welded in supporting structure

Instruction of Selecting Steel Grating:

1) Light & medium duty                                Maximum recommended spans

2) Heavy duty                                        Maximum recommended spans

Packaging

 Technical Information

Type M 

Type M Trench cover: usually use the grating with 50mm cross bar pitch to enhance the impact resistance.

Type T 

Type T Trench cover: except for high way, T trench cover is suitable for all other roads, which are not crowded. Screw fixing is recommended to avoid danger. This kind of trench cover is used on T shape ditch, with angle steel searing frame. JGxxx/30/100 is generally used for making T trench cover, and other types are also available. For the trench covers used in public places, the grating with 50 mm cross bar pitch is recommended. Serrated type and I bar type grating is available according to customer requests

Type U 

Type U Trench cover: regarding most concrete groove without edge, it would be very simple and economical to use U trench cover for there is no special requirement to groove edge. It’s suggested that angle steel should be filled in upper edge. If the loads are T-6 and T-14. The U trench prefab blocks are also available to prevent dirty water to leak in to earth. But U trench cover is just suitable for side ditch when a car need to cross it

Packaging

Specification of Heavy Duty Steel Grating:

1. The shape of bearing bar: Plain type (may be omitted in the symbol of steel grating), Serrated type and I-Shape type
2. Bearing bar pitches can be 12.5, 15, 20, 30, 30.16, 32.5, 34.3, 40, 60, 80mm, of which 30mm & 40mmare recommended.
3. Cross bar pitches can be 40,50,60,65,76,100,101.6,120mm are recommended.
4. Surface treatment: Hot-dip galvanizing, paint or other anti-corrosive coatings are available, of which hot-dip galvanizing is generally recommended.
5. Material: Carbon steel/ stainless steel
6. Tolerance
The allowed deviation of length is +0/-5mm, while the allowed deviation of width is +/-5 mm.
The non-perpendicularity of bearing bar is allowed no more than 10% of width of bearing bar.
Cross bar surface should not surpass bearing bar surface 1mm, beginning & end of cross bar should not surpass the end surfaces of two sides of grating 2mm.
7. Standard:

Technical Information

Popular Types of Heavy Duty Steel Grating:

1. Steel grating with 30mmx50mm bearing bar pitch is the most widely used in industrial area. Among the general series, it maintains the strongest resistance to impulsive force.

2. Steel grating with 40mmx50mm bearing bar pitch is one of the most economical & lightest types. It should be the best choice to customer on the occasion when the clear span is small.

3. Steel grating with 60mmx50mm bearing bar pitch & 50mm cross bar pitch is developed specially for mining industry. As it can avoid the mineral splashing down on board, it’s appointed to use in fabrication plant, transfer terminal & other areas of mining.

Manufacturing Process of Heavy Duty Steel Grating:

Material-welding-cutting-end plate welding-surface treatment-final shipment

Saddle Clip Heavy Duty Steel Grating:

Type A saddle clip- composed of a top board with double hooks, a holding down plate with teeth and M8 inner-hexagon-bolt.

Type B saddle clip- composed of a top board with double hooks (one of hooks can draw together the two neighboring steel gratings), and a holding down plate with teeth and a M8 inner-hexagon-bolt.

Type C saddle clip-composed of a top board with double hooks and a M8 hexagon-bolt can be welded in supporting structure

Packaging

Specification of Upright Stanchion:

Technical Information

Relation between Railing Type & Stanchion:

Note:

1. One meter distance is recommended between two stanchions;

2. Tapping screw is recommended for railing installation.

Packaging

Specification of Compound Steel Grating:

1)Type: SG323/40/100, SG253/30/100 and SG323/60/100

2）Standard: YB/T4001.1-2007, ANSI/NAAMM, BS4592, AS1657

3）Thickness: 3mm thickness is used as sealing; sometimes checkered plate with thickness of 4mm, 5mm or 6mm is also used as sealing plate according to customer’s requirements

4) Surface treatment: Hot-dip galvanizing, paint or other anti-corrosive coatings are available, of which hot-dip galvanizing is generally recommended

5) Application: Industrial platform, flooring and walkway, traffic & steel structure

6) Notice: as thermal stress may cause shape distortion after hot-dip galvanizing treatment, especially when choosing large spacing grating, it’s not easy to flatten, so special attention should

Features of Compound Steel Grating:

– Easy installation
– Strong structure
– Aesthetic appearance
– Good water permeability

Packaging

Specification of Special Steel Grating:

Special Steel Grating can be produced according to customers’ special requirements, contact us to get more information.

1. The shape of bearing bar: Plain type (may be omitted in the symbol of steel grating), Serrated type and I-Shape type

2. Bearing bar pitches can be 12.5, 15, 20, 30, 30.16, 32.5, 34.3, 40, 60mm, of which 30mm & 40mmare recommended.

3. Cross bar pitches can be 38, 50, 60,100mm, of which 50mm & 100mm are recommended.

4. Surface treatment: Hot-dip galvanizing, paint or other anti-corrosive coatings are available, of which hot-dip galvanizing is generally recommended.

5. Material: Carbon steel/ stainless steel

6. Tolerance

The allowed deviation of length is +0/-5mm, while the allowed deviation of width is +/-5 mm.

The non-perpendicularity of bearing bar is allowed no more than 10% of width of bearing bar.

Cross bar surface should not surpass bearing bar surface 1mm, beginning & end of cross bar should not surpass the end surfaces of two sides of grating 2mm.

7. Standard:

The Most Popular Specifications of Special Steel Graing:
1.Steel grating with 30mm bearing bar pitch is the most widely used in industrial area. Among the general series, it maintains the strongest resistance to impulsive force.
2.Steel grating with 40mm bearing bar pitch is one of the most economical & lightest types. It should be the best choice to customer on the occasion when the clear span is small.
3.Steel grating with 60mm bearing bar pitch & 50mm cross bar pitch is developed specially for mining industry. As it can avoid the mineral splashing down on board, it’s appointed to use in fabrication plant, transfer terminal & other areas of mining.

Technical Information

Instruction of Selecting Special Steel Grating:

We can cut and slit according to customer’s special requirement

1) Light & medium duty                                Maximum recommended spans

2) Heavy duty                                        Maximum recommended spans

Packaging

Specification of Galvanized Serrated Steel Grating:

1. The shape of Serrated type
2. Bearing bar pitches can be 12.5, 15, 20, 30, 30.16, 32.5, 34.3, 40, 60mm, of which 30mm & 40mmare recommended.
3. Cross bar pitches can be 38, 50, 60,100mm, of which 50mm & 100mm are recommended.
4. Surface treatment: Hot-dip galvanizing, paint or other anti-corrosive coatings are available, of which hot-dip galvanizing is generally recommended.
5. Material: Q235 in line with GB/T700 steel
6. Tolerance
The allowed deviation of length is +0/-5mm, while the allowed deviation of width is +/-5 mm.
The non-perpendicularity of bearing bar is allowed no more than 10% of width of bearing bar.
Cross bar surface should not surpass bearing bar surface 1mm, beginning & end of cross bar should not surpass the end surfaces of two sides of grating 2mm.
7. Standard:

The most popular specifications of Galvanized Serrated Steel Graing:

1.Steel grating with 30mm bearing bar pitch is the most widely used in industrial area. Among the general series, it maintains the strongest resistance to impulsive force.
2.Steel grating with 40mm bearing bar pitch is one of the most economical & lightest types. It should be the best choice to customer on the occasion when the clear span is small.
3.Steel grating with 60mm bearing bar pitch & 50mm cross bar pitch is developed specially for mining industry. As it can avoid the mineral splashing down on board, it’s appointed to use in fabrication plant, transfer terminal & other areas of mining.

Technical Information

Instruction of Selecting Galvanized Serrated Steel Grating:

1) Light & medium duty                                Maximum recommended spans

2) Heavy duty                                        Maximum recommended spans

Packaging

Specifications of Stair Tread:

1. Size: tread length by width, the length direction of tread refers to the width direction of ladder
2. Material: Q235 in line with GB/T700 steel, steel or stainless steel
3. Surface treatment: Hot-dip galvanizing, paint or other anti-corrosive coatings are available, of which hot-dip galvanizing is generally recommended
4. Standards: YB/T4001.1-2007, ANSI/NAAMM, BS4592, AS1657
5. Bearing bar pitches can be 12.5, 15, 20, 30, 30.16, 32.5, 34.3, 40, 60mm, of which 30mm & 40mmare recommended.
6. Cross bar pitches can be 38, 50, 60,100mm, of which 50mm & 100mm are recommended

Technical Information

Types of Stair Tread

8 Standard types of stair tread, with welded fixing and bolted fixing, different nosing forhead, we also accept customization according to your different requirement.

Packaging