Inner diameter 70mm galvanized metal bellows for bridge prestressed bellows, available for production and ordering.

Contact me for production and ordering of 70mm inner diameter metal bellows manufacturer galvanized bridge prestressed bellows

Prestressed galvanized bellows are high-performance metal pipes used in prestressed concrete structures, primarily for forming holes and protecting prestressed tendons in post-tensioning prestressed engineering.

Product Features

1. Excellent corrosion resistance: Utilizes hot-dip galvanizing process, Contact me for production and ordering of 70mm inner diameter metal bellows manufacturer galvanized bridge prestressed bellows strong anti-rust capability
2. Good flexibility: Can adapt to various complex curved reinforcement requirements
3. Strong sealing: Effectively prevents cement slurry from seeping into the pipe
4. High strength: Can withstand pressure during concrete pouring and vibration
5. Long service life: Galvanized layer ensures long-term use Contact me for production and ordering of 70mm inner diameter metal bellows manufacturer galvanized bridge prestressed bellows without rusting

Technical Parameters

• Material: High-quality low-carbon steel strip
• Galvanized layer thickness: ≥60μm
• Ring stiffness: ≥6kN/m²
• Operating temperature: -30℃ to +120℃
• Common specifications: Inner diameter 50mm-120mm

Construction Methods

Pre-construction Preparation

1. Inspect bellows quality to ensure no damage, Contact me for production and ordering of 70mm inner diameter metal bellows manufacturer galvanized bridge prestressed bellows deformation
2. Prepare dedicated connecting sleeves and sealing tape
3. Check design drawings to determine bellows layout position and direction

Installation Steps

1. Positioning and marking: Mark bellows positions on the formwork according to design drawings
2. Fixed bracket installation: Installation spacing is generally 0.8-1.2m
3. Bellows laying:
   • Keep straight sections straight
   • Ensure smooth transitions in curved sections
   • Use dedicated connecting sleeves to connect each section
4. Anchorage end treatment: Perform sealing treatment at the anchor plate
5. Grouting hole/vent hole setup: Set grouting holes and vent holes at appropriate positions

Construction Precautions

1. Avoid damaging the bellows galvanized layer during installation
2. Connection parts must be tightly sealed to prevent slurry leakage
3. Avoid direct contact of vibrators with bellows during concrete pouring
4. Promptly inspect pipeline通畅性 after construction completion
5. Take anti-freezing measures during winter construction

Quality Acceptance Standards

1. Bellows installation position deviation ≤10mm
2. Fixed point spacing deviation ≤50mm
3. No debris blockage inside the pipeline
4. Good sealing at connection parts
5. No large-area peeling of galvanized layer