Marine Bitt
I. Engineering Drawing
The Marine Bitt drawing presents a detailed design of a cast – iron bollard component, including multiple views: a front view, a top view, and a sectional view (A – A). The drawing is provided at two scales: the main view at 1:5 and the location view and plug view at 1:10.
Dimensional Specifications Table
| Load (kN) | D (mm) | D0 (mm) | t (mm) | H (mm) | H1 (mm) | H2 (mm) | B (mm) | B1 (mm) | A (mm) | n1 | n – □ | d (mm) | d1 (mm) | d2 (mm) | L (mm) | L1 (mm) | t1 (mm) | t2 (mm) | B2 (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50kN | 200 | 250 | 20 | 200 | 20 | 90 | 113 | 30 | 30 | 25 | 4 – □13 | 20 | 30 | 21 | 31 | 52 | 75 | 50 | 60 |
| 150kN | 200 | 250 | 30 | 300 | 30 | 113 | 113 | 38 | 38 | 35 | 4 – □17 | 20 | 30 | 21 | 31 | 52 | 75 | 70 | 80 |
Drawing Instructions
- All dimensions in the drawing are in millimeters (mm).
- The dimensional tolerances of each part in the drawing follow the IT – I 150kN round -底盘羊角型铸铁系船桩 (chassis sheep – horn type cast – iron bollard) standard, for example, refer to relevant figures.
- The top of the bollard column should be cast with “50kN” and “150kN” characters.
- After reaming the bolt holes, asphalt should be applied for anti – rust treatment.
- After installing the bollard, the shell should be filled with cement mortar.
- The surface roughness of the bolt holes should be uniform, with the rest as required.
- Welding should use T42 welding rods.
- The outer轮廓尺寸 (outer contour dimensions; likely a translation error, probably meaning unmarked outer dimensions) in the drawing should have a smooth transition without sharp corners.
- The surface of the bollard shell should be painted with red lead and anti – rust paint twice, and the top surface can be coated with red lead oil.
- The dimension L in the table is L = L1+[0 +6].
II. Bill of Materials
The bill of materials provides a comprehensive list of all components required for the assembly of the cast – iron bollard, including their material, specifications, quantity, individual weight, and total weight under different load conditions (50kN and 150kN).
| Serial Number | Component Name | Material | Specification | Quantity | Individual Part Weight (kg) (50kN/150kN) | Total Weight (kg) (50kN/150kN) |
|---|---|---|---|---|---|---|
| 1 | Shell | Cast Iron | HT20 – 40 | 1 | 92/173 | 92/173 |
| 2 | Bollard Plug | Q235 | M20 M30 | 4 | 1.925/6.450 | 7.7/25.8 |
| 3 | Nut | Q235 | CB41 – 76 | 4 | 0.062/0.234 | 0.3/0.9 |
| 4 | Washer | Q235 | CB85 – 76 | 4 | 0.016/0.067 | 0.064/0.268 |
| 5 | Location Plate | Q235 | See Drawing | 1 | 10.800/15.500 | 10.8/15.5 |
Attention please: The description might be incorrect, please contact us for confirmation.
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