| safety factor | ||||
| materials | static load | dynamic load | shock load | |
| repeated load | alternating load | |||
| foundry iron | 4 | 6 | 10 | 15 |
| mild steel | 3 | 5 | 8 | 12 |
| cast steel | 3 | 5 | 8 | 15 |
| light metal | 5 | 6 | 9 | 15 |
| Comparison of Materials Commonly Used for Valve Blocks | |||||
| Type | Working pressure/Mpa | Thickness/mm | Manufacturability | Weldability | Cost factor |
| Hot-rolled steel sheet | ≈35 | <160 | usual | usual | 1 |
| Carbon steel forgings | ≈35 | >160 | usual | usual | 1.5 |
| Free Cutting Steel | ≈35 | Rods, Plates | usual | usual | 1.5 |
| Grey cast iron | ≈14 | —— | good | unacceptable | 2 |
| Ductile iron | ≈35 | —— | usual | unacceptable | 2.1 |
| Aluminium alloy forgings | ≈21 | —— | good | unacceptable | 3~5 |
Ensure Quality – Full CNC Machining
We adopt full CNC processing to maximize the elimination of human error, with consistency as high as 98%. Several strict inspection and cleaning procedures and a perfect system guarantee the high quality of the products.
Technology development and design
Testing of raw materials
CNC machining
Burr repair
Surface grinding machine
Surface finish detection
Ultrasonic cleaning
External processing nikel plating
Thread check gauge
Hole inner diameter dial indicator detection
Thread ring gauge detection
Semi-finished products endoscopic detection
Product assembly
Assembly drawing comparison check
