F023C & H3/36B Mast Section with M27*89 Bolts | Tower Crane Spare Parts
F023C Mast Section and H3/36B Mast Section with Assembly Bolts
Reliable panel mast sections and matching high-strength assembly bolts for tower crane repair, replacement, stock supply, and export projects.
This page covers F023C / 23C / L46A1 panel mast section, H3/36B panel mast section, and matching M27×89 reamed hole bolts for panel mast section assembly.
F023C / 23C / L46A1 panel mast section ready for supply
Quick Specifications
| Item | F023C / 23C / L46A1 | H3/36B | Assembly Bolt |
|---|---|---|---|
| Type | Panel Mast Section | Panel Mast Section | Reamed Hole Bolt / Fitted Bolt |
| Size | 1.6 × 1.6 × 3.0 m | 2.0 × 2.0 × 3.0 m | M27 × 89 |
| Structure | 4 separate panel frames | 4 separate steel frame panels | For panel mast section assembly |
| Main Material | 180 × 18 angle steel | ∠200 × 20 angle steel | 40Cr |
| Connection | M27 × 89 reamed hole bolts | Reamed hole bolts + Φ55 pin connection | 10.9 grade, zinc plated |
Product Overview
F023C and H3/36B are widely used panel-type tower crane mast sections designed for easier transport, convenient site assembly, and efficient replacement. Compared with integral welded mast sections, panel mast sections are easier to ship, easier to store, and more convenient for spare parts preparation.
F023C / 23C / L46A1 Mast Section
The F023C mast section is also commonly known as 23C mast section, L46A1 panel mast section, or 1.6m panel mast section. It has a standard size of 1.6 × 1.6 × 3.0 m and is mainly built from 180 × 18 angle steel.
Each complete mast section is assembled from 4 separate panel frames using M27 × 89 reamed hole bolts. A standard set can include one galvanized ladder, 8 pcs 50 × 171 pins, and 4 pcs 20 × 210 safety pins.
This type is suitable for buyers who need replacement parts, stock supply, crane refurbishment, and export delivery. It is commonly associated with tower crane applications involving Zoomlion, Potain, SYM, SCM, and Yongmao.
Factory stock of F023C / 23C / L46A1 panel mast section components
F023C Mast Section Features
- 1.6m panel mast section design
- 4-piece frame structure for easier transportation
- M27 × 89 fitted bolt assembly
- Stable structure for replacement and maintenance use
- Convenient for export packing and stock preparation
- Suitable for tower crane refurbishment projects
H3/36B Mast Section
The H3/36B mast section is a 2.0 × 2.0 × 3.0 m panel mast section composed of 4 separate structural steel frames. These frames are connected together during installation to form a complete mast section.
Its structure includes the main chord, fishplate, diagonal members, connection plates, and gusset plates. The main chord uses ∠200 × 20 angle steel, the diagonal brace uses 100 channel steel, and the vertical web member uses ∠100 × 10 angle steel.
The structure uses Φ55 pins for connection. The surface treatment uses shot blasting and double-primer / double-finish coating, helping improve rust resistance, appearance, and service life.
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H3/36B mast section frames prepared in workshop
H3/36B is suitable for spare parts stock, replacement supply, project support, and export delivery. It is a practical option for tower crane parts distributors, refurbishment projects, and overseas buyers needing large-size panel mast sections.
 Warehouse stock of H3/36B panel mast section panels |
H3/36B Structure and Connection Details
The panel structure of H3/36B makes transportation and assembly more convenient. Independent frame members, connection points, and joint areas are designed to support practical field installation and component replacement.
Structural Members
The structural members include diagonal components, connection plates, gusset areas, and main frame members used to form the complete panel mast section.
 Structural members used in H3/36B mast section assembly |
Pin Connection Detail
The H3/36B mast section uses a practical pin connection layout that supports stable installation, easy assembly, and convenient maintenance work.
 Pin connection detail on H3/36B mast section frame |
Joint Connection Detail
The joint connection area shows the assembly interface between frame components and helps explain how the panel mast section is fitted together on site.
 Joint connection detail of H3/36B panel mast section |
M27×89 Assembly Bolts for 23C / 36B Panel Mast Sections
We also supply matching M27 × 89 reamed hole bolts for F023C / 23C / L46A1 and 36B-type panel mast sections. These bolts are also described as high-strength fitted bolts used for panel mast section assembly.
Main bolt data:
- Model: M27 × 89
- Bolt Type: Reamed Hole Bolt / Fitted Bolt
- Shank Length: 89 mm
- Rod Diameter: 30 mm
- Thread Diameter: 27 mm
- Strength Grade: 10.9
- Material: 40Cr
- Surface: Zinc Plated
Other common panel mast section bolt sizes include M20 × 70 and M30 × 110.
Close-up of M27×89 reamed hole bolt and nut
Bolt Stock and Batch Supply
These bolts are suitable for spare parts stock, batch supply, export packing, and maintenance distribution for panel mast section projects.
Batch stock of M27×89 fitted bolts for mast section assembly
Bolt Side Structure
The side view helps show the fitted bolt body, shank detail, and connection design used for reamed hole assembly in panel mast sections.
Side view of fitted bolt structure for mast section assembly
High Strength Grade 10.9
Grade 10.9 bolts are commonly used where strong and reliable assembly performance is required for mast section installation and replacement work.
10.9 grade high-strength bolts ready for installation
Zinc Plated Surface Detail
Zinc plated treatment helps provide better anti-rust performance for storage, transport, and practical site use.
Detailed thread and nut structure of zinc plated bolt
Applications
- Tower crane maintenance and repair companies
- Used tower crane refurbishment projects
- Spare parts distributors and stock suppliers
- Crane rental companies
- International buyers of tower crane spare parts
- Contractors needing replacement mast section components
Export Markets
We support export supply for tower crane mast sections, panel mast section frames, and assembly bolts to UAE, Saudi Arabia, Qatar, Kazakhstan, Uzbekistan, Indonesia, Vietnam, Malaysia, Philippines, Egypt, Algeria, and Africa.
H3/36B panel mast section loaded for overseas shipment
FAQ
1. Is F023C the same as 23C or L46A1?
Yes. F023C is also referred to as 23C mast section and L46A1 panel mast section.
2. What is the size of F023C mast section?
The listed size is 1.6 × 1.6 × 3.0 m.
3. What is the size of H3/36B mast section?
The listed size is 2.0 × 2.0 × 3.0 m.
4. What bolt is used for 23C / 36B panel mast section assembly?
The common matching bolt is M27 × 89 reamed hole bolt, 10.9 grade, zinc plated.
5. Can you supply bolts together with mast section panels?
Yes. We can supply panel mast sections together with matching bolts, pins, safety pins, and ladder components.
6. How do I confirm compatibility?
Please confirm exact compatibility by mast section drawing, overall dimension, connection detail, and pin / bolt specification before ordering.
Request Price and Stock Details
Looking for F023C mast section, H3/36B mast section, or M27×89 assembly bolts? Contact us now for specification confirmation, packing details, and export quotation.
Email: [email protected]
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Website: atlastowercrane.com