Central bolt（C-bolt) is a kind of fastener composed of head and screw (cylinder with external thread), which is used to fasten and connect two parts with through holes together with nut. In the mechanical suspension of automobile, the elastic element leaf spring is connected by the central bolt. The central bolt is used to connect each leaf and ensure the relative position of each leaf during assembly.
| QC management system | Implementing IATF16949-2016 |
| Services quality management system | Implementing ISO9001-2015 |
| Product technical standards | Implementing GB/T5909-2009 |
| Quality testing by | A Dedicated Testing center for monitoring of length, temperature and mechanical parameters |
| Raw material | Top 3 steel mills in China |
| Production | The main production equipment includes inverted wire drawing machine, spheroidizing annealing furnace, heat treatment mesh belt furnace, multi-station cold heading machine, thread rolling machine, automatic high-speed thread rolling machine, tapping machine, CNC lathe, hot forging machine, servo punching machine |
| Mark | Laser typing |
| Other inspection equipment | Chemical analyzer, metallographic analyzer, corrosion resistance testing machine, mechanical property testing and flaw detection machine, screw image screening machine, eddy current screening machine |
| Overseas market | 30+ countries(Thailand, Vietnam, Malaysia, Singapore, The Philippines, Indonesia, Canada, Mexico, Brazil, Bolivia, Argentina, Ecualor, Chile, Peru, Guatemala, Panama, Egypt, South Africa, Nigeria, Tanzania, Russia, France, German, Poland, etc.) |
| Number of employees | 200+ |
| Number of engineers | 12+ |
Comprehensive Info of U-bolt:
| types | Type A, B, C, D, E, F, G, H |
| Material: | 42CrMon, 35CrMon, 40Cr,45#, A3 |
| Grade | 12.9; 10.9; 8.8; 6.8; 4.8 |
| Brand | Nissian,Isuzu,Scannia,Mitsubishi, Toyota, Renault, BPW,Man,Benz, Mercedes, |
| Finishing | Bake paint, Black Oxide, Zinc plated, Phosphate, Electrophoresis, Dacromet |
| Colors | Black, Grey, Gold, Red, Sliver |
| Package | Carton box |
| Payment | TT, L/C, |
| Lead time | 15~25 working days |
| MOQ | 1 pc |
WONDEE Autoparts C-bolt series:
| Item No. | φ | L | F | H | A | B | Type |
| WDCB-0001 | M16 | 305 | 150 | 14 | 30 | 25 | TYPE C |
| WDCB-0002 | M16 | 280 | 200 | 15 | 28 | - | TYPE H |
| WDCB-0003 | 10.7 | 153 | 110 | 28 | 15 | - | TYPE B |
| WDCB-0004 | 18 | 270 | 135 | 15 | 28 | - | TYPE H |
| WDCB-0005 | 12 | 305 | 210 | 17.5 | 17 | 14 | TYPE E |
| WDCB-0006 | 14 | 200 | 140 | 28 | 20 | 17 | TYPE E |
| WDCB-0007 | 14 | 205 | 143 | 16.5 | 20 | 17.5 | TYPE C |
| WDCB-0008 | 20 | 350 | 105 | 15 | 28 | - | TYPE F |
| WDCB-0009 | 20 | 350 | 100 | 14 | 17 | - | TYPE H |
| WDCB-0010 | 18 | 280 | 115 | 12.5 | 27 | - | Hex Bolt |
| WDCB-0011 | 24 | 153 | 20 | 15 | 34 | Hex Bolt |
Note: C-bolt will be supplied according to OEM number and specific drawings.
WONDEE Autoparts U-bolt series:
Note : U-bolt will be supplied according to OEM number and specific drawings.
Workshops of WONDEE Autoparts bolts factory:
Product processing of WONDEE Autoparts bolts:
Other bolt types of WONDEE Autoparts: different types of u-bolts and center bolts: