Bronze Square Tape Clamps – Manufacturer & Exporter from India

Cable Glands India is a trusted manufacturer, supplier, and exporter of Bronze Square Tape Clamps from India. Bronze Square Tape Clamps (also known as Two-Hole Tape Clamps, Cross-Tape Bonding Clamps, or Tape-to-Tape Connectors) are designed to create a secure, low-resistance electrical bond between two flat earthing tapes running in the same or crossing directions. Our clamps are manufactured from high-grade Gunmetal Bronze (IS 318 LTB2 / LTB4) and Phosphor Bronze, ensuring exceptional conductivity, corrosion resistance, and mechanical strength in demanding earthing applications.

Bronze Square Tape Clamps are extensively used in substation earthing grids, building earthing systems, and lightning protection bonding networks where multiple conductors must be joined at a node without soldering or welding. They comply with IS 3043:2018, BS 7430:2011+A1:2015, IEC 60364-5-54, and IEEE Std 80-2013, and are available in configurations for tape widths from 20 mm to 50 mm. Custom configurations for crossing angles, special alloys, and enhanced current ratings are available upon request.

Product Overview

Applicable Standards

• IS 3043:2018 – Code of Practice for Earthing – specifies tape conductor connections and joint resistance requirements
• BS 7430:2011+A1:2015 – Code of Practice for Protective Earthing – recommends bronze/gunmetal for underground and buried tape connections
• IEC 60364-5-54:2011 – Earthing Arrangements, Protective Conductors and Protective Bonding Conductors
• IEEE Std 80-2013 – Guide for Safety in AC Substation Grounding – grid conductor joint sizing and materials
• DIN 48800 – Earthing equipment – dimensions and requirements for tape connections
• IEC 62305-3:2010 – Lightning Protection – Physical damage to structures; bonding conductor connections
• EN 50164-1 – Lightning Protection Components – requirements for connection components

Key Features & Benefits

• Secure Tape-to-Tape Bonding: Square body design provides full-face contact across both tapes, maximising contact area and minimising joint resistance, critical for low-impedance earthing grids as per IEEE 80 and IS 3043.
• In-Line and Cross Configurations: Available for in-line tape splicing (extending tape runs), T-junction bonding, and X-junction cross connections, making them versatile for any grid layout.
• No Welding Required: Mechanical bolt-down connection eliminates thermite or exothermic welding, reducing fire hazards, hot-work permit requirements, and installation time.
• Superior Bronze Construction: Gunmetal or Phosphor Bronze material offers excellent corrosion resistance in soil, concrete, and aggressive industrial environments, ensuring 30+ year service life.
• Suitable for Buried Installations: Designed for direct burial in soil or concrete, the bronze material is immune to soil corrosion and chemical attack for the system’s designed life.
• Anti-Loosening Hardware: Spring washers and lock nuts prevent vibration-induced loosening, maintaining a permanent low-resistance connection throughout the service life.
• Galvanic Corrosion Prevention: Tin-plated and nickel-plated variants prevent bimetallic corrosion where copper tape meets aluminium tape or steel structures.

Applications

• Substation earthing grid – conductor cross connections and splices
• Building earthing mesh grid – tape-to-tape bonding nodes
• Lightning Protection System (LPS) – ring conductor bonding
• Power plant switchyard earthing grids
• Telecommunications and radio tower earthing systems
• Railway traction and signalling earthing networks
• Oil, gas, and petrochemical plant earthing
• Solar and wind farm earthing systems
• Data centre and server room equipotential bonding grids

Frequently Asked Questions (FAQ)

Q1: What is a Bronze Square Tape Clamp?

A Bronze Square Tape Clamp is a precision-cast or machined connector that mechanically bonds two flat earthing tapes together at a node within an earthing grid. It can connect tapes running in the same direction (splice/in-line connection) or tapes crossing each other at 90° (T or X junction), creating a low-resistance, permanent electrical joint without the need for welding.

Q2: What is the difference between a Square Tape Clamp and a Tape Clip?

A Tape Clip (or tape hold-down clip) secures a single tape to a surface such as a wall, concrete, or structural steel to keep it in position. A Square Tape Clamp bonds two separate tapes together electrically and mechanically at a junction or splice point. Both are required components of a complete earthing tape installation.

Q3: Can these clamps be used underground or in concrete?

Yes. Our Bronze Square Tape Clamps are suitable for direct burial in soil and encasement in concrete. The Gunmetal/Bronze material is chemically inert in both environments, providing corrosion-free performance for the designed life of the earthing system (typically 25–50 years).

Q4: What tape widths do your square tape clamps support?

We supply square tape clamps for standard tape widths of 20 mm, 25 mm, 30 mm, 40 mm, and 50 mm. For cross-connections involving two different tape widths (e.g., 25 mm × 40 mm), we offer mixed-width configurations on request.

Q5: Are these clamps equivalent to exothermic welded connections?

Mechanically bolted square tape clamps provide a reliable, low-resistance connection that meets IS 3043 and BS 7430 requirements. Exothermic welding creates a molecular bond that some standards specify for buried connections. For critical substation applications requiring permanent welded connections, our clamps serve as a practical, verifiable, and re-accessible alternative where standards permit mechanical connections.

Q6: How many bolts do your square tape clamps use?

Our standard square tape clamps use two or four bolts (depending on tape width and application) to ensure even clamping pressure across the full contact area. Multi-bolt designs are recommended for wider tapes (40 mm and 50 mm) and high fault current applications.

Q7: Can I order custom-size square tape clamps?

Yes. We manufacture custom bronze square tape clamps for non-standard tape widths, thicknesses, and crossing angle configurations. Please submit your drawings or specifications and our engineering team will provide a quotation within 48 hours.

Similar and Related Products

• Brass and Bronze Earthing and Grounding Tape Clips
• Bronze Ground Rod U Clamps
• Bronze Rebar Ground Clamps
• Copper Earth Tape
• Bronze and Copper Electrical Connectors
• Brass Earthing Connectors
• Copper-Bonded Earth Rods
• Bronze Parts and Fittings

Why Source Bronze Square Tape Clamps from Cable Glands India?

Cable Glands India manufactures Bronze Square Tape Clamps using precision sand casting, die casting, and CNC machining processes, backed by ISO-standard quality management. Our clamps undergo dimensional verification, chemical composition analysis (OES spectrometry), and contact resistance testing before dispatch.

We serve global markets across the Middle East, Africa, UK, Australia, Southeast Asia, and the Americas, supplying to electrical contractors, substation builders, telecom infrastructure developers, and lightning protection installers. With flexible minimum order quantities, fast turnaround, and competitive pricing, we are your ideal manufacturing partner for earthing system accessories.