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:
| standard | Steel grating standard | Steel standard | Galvanizing standard |
| China standard | YB/T 4001.1-2007 | GB700-88 | GB/T13912-2002 |
| USAÂ standard | ANSI/NAAMM(MBG531) | ASTM(A36) | ASTM(A123) |
| U.K. standard | BS4592 | BS4360(43A) | BS729 |
| Australia standard | AS1657 | AS3679 | AS1650 |
Have you ever seen any PCP Air Pump that can pressurize a gun up to 4500 psi/310bar? ours PCP Pump can! The guns that usually require a carbon fiber tank to pressurize them can now be filled with a PCP Hand Pump. One pump for ALL your PCP guns. How convenient is that!
Our pcp hand pump detailed:
Material: Copper, Stainless steel and Aluminum alloy
Maximum Pressure: 4500psi/310bar
With a female foster quick-disconnect on the end of the hose
Body Color: White, black Camouflage Green, or
Size:
- Length closed 630mm;
- Length opened 1100mm
Item Weight: about 3.0kg
Feature of 300bar 4500 PSI Hand Pump:
1. Smooth upward and downwards motion
2. High pressure goes up to 4500psi 300bar
3. Precision pressure gauge for monitoring pressure level
4. High grade 304 stainless steel pump body is much safer
5. All spare parts use advanced CNC technology
6. Bleed valve to prevent oil and water into your equipment
7. Ergonomically designed handle for comfortable use
8. Folding footplate for space saving and easy storage
9. Flexible micro-bore hose for convenient filling
10. Come with O-rings and other complete accessories
11. Comes flat packed with full instructions and tools to assemble
Applications of High Pressure Air Pump:
1.Suitable for any brand of PCP pistols, air rifles and air guns
2. Great for automobile tires, motorcycle tires, bicycle tires, inflatable kayaks, inflatable balls etc.
Advantages of 4500 psi hand pump
1.Small and easy to store
2.Doesn`t need any technical testing
3.Cheaper price compared to carbon fiber tanks
4.Does not break easily, hand pump is generally durable and can last for years
5.No need to refill so it doesn`t cost any money on the refilling process like air tank.
6.Never run out of air power
7.Can be repaired and serviced easily
8.300 bar pump is highly cost effective.
You buy air hand pump once and there is little money to spend for its maintenance
Gives you ultimate control over the pressure level. You can pump the gun and stop at any pressure point that you want. This characteristic alone makes some air gun experts prefer a hand pump over air tanks for their PCP gun rifles.
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SHIJIAZHUANG TOPA TRADING CO., LTD. , http://www.topahydraulic.com