Gravlock Coupler – Load Capacity & Specs Overview
Beam coupler, also known as Gravlock coupler or Girder coupler, plays a critical role in scaffolding systems. Its main job? Connecting beams and pipes securely to support load capacity for various projects.
We use only high-quality pure steel for all raw materials – durable, strong, and built for real job site conditions. Our Gravlock couplers have passed SGS testing in compliance with BS1139, EN74, and AS/NZS 1576 standards. So you know they meet international safety requirements.
Our company is based in Tianjin, China’s largest steel and scaffolding manufacturing hub. As a major port city, Tianjin makes global shipping fast and convenient. We produce a full range of scaffolding products – ringlock system, steel board, frame system, shoring prop, adjustable jack base, pipes, couplers, cuplock, kwickstage, aluminum scaffolding, and more. Currently, we export to Southeast Asia, the Middle East, Europe, and the Americas.
Our principle: Quality First, Customer Foremost, Service Utmost. We’re ready to meet your requirements and build mutual success.
Scaffolding Girder Beam Coupler
| Commodity | Specification mm | Normal Weight g | Customized | Raw Material | Surface treatment |
| Beam/Girder Fixed Coupler | 48.3mm | 1500g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Beam/Girder Swivel Coupler | 48.3mm | 1350g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
Scaffolding Coupler Other Types
1. BS1139/EN74 Standard Drop Forged scaffolding Couplers and Fittings
| Commodity | Specification mm | Normal Weight g | Customized | Raw Material | Surface treatment |
| Double/Fixed coupler | 48.3x48.3mm | 980g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Double/Fixed coupler | 48.3x60.5mm | 1260g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Swivel coupler | 48.3x48.3mm | 1130g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Swivel coupler | 48.3x60.5mm | 1380g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Putlog coupler | 48.3mm | 630g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Board retaining coupler | 48.3mm | 620g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Sleeve coupler | 48.3x48.3mm | 1000g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Inner Joint Pin Coupler | 48.3x48.3 | 1050g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Beam/Girder Fixed Coupler | 48.3mm | 1500g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Beam/Girder Swivel Coupler | 48.3mm | 1350g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
2. German Type Standard Drop Forged scaffolding Couplers and Fittings
| Commodity | Specification mm | Normal Weight g | Customized | Raw Material | Surface treatment |
| Double coupler | 48.3x48.3mm | 1250g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Swivel coupler | 48.3x48.3mm | 1450g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
3. American Type Standard Drop Forged scaffolding Couplers and Fittings
| Commodity | Specification mm | Normal Weight g | Customized | Raw Material | Surface treatment |
| Double coupler | 48.3x48.3mm | 1500g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
| Swivel coupler | 48.3x48.3mm | 1710g | yes | Q235/Q355 | eletro Galvanized/ hot dip Galvanized |
Scaffolding Coupler SGS Testing Report
Advantages
1. Premium Raw Material for Strength & Durability
Manufactured from high-grade pure steel, ensuring superior strength and long service life even under heavy loading conditions.
Designed to perform reliably in demanding construction environments.
2. Certified Quality to International Standards
Successfully passed SGS testing in compliance with:
BS1139 (British Standard)
EN74 (European Standard)
AN/NZS 1576 (Australian/New Zealand Standard)
Provides full traceability and confidence for global projects.
3. Critical Role in Structural Loading Support
As a Beam Coupler (Gravlock Coupler), it is essential for securely connecting beams and pipes together.
Directly supports the loading capacity of scaffolding systems, making it a key component for safety and stability.
4. Strategic Manufacturing & Logistics Base
Our factory is located in Tianjin, the largest steel and scaffolding production base in China.
Tianjin is also a major port city (Tianjin Xingang Port), enabling fast, cost-effective shipping to any port worldwide.
5. Comprehensive Scaffolding Product Range & Export Experience
We specialize in a full line of scaffolding and formwork products, including:
Ringlock system, Steel board, Frame system, Shoring prop
Adjustable jack base, Scaffolding pipes & fittings, Couplers
Cuplock system, Kwickstage system, Aluminum scaffolding system, and more
Our products are already exported to Southeast Asia, the Middle East, Europe, and the Americas.
6. Customer-Driven Philosophy
Principle: "Quality First, Customer Foremost, Service Utmost."
We are committed to meeting your specific requirements and fostering mutually beneficial cooperation.
Company Introduction
Tianjin Huayou Scaffolding Co., Ltd. is based in Tianjin, a city recognized as China's leading hub for steel and scaffolding manufacturing. Being a coastal port city, Tianjin offers convenient access to global shipping routes, making cargo transport to international ports efficient and cost-effective.
We are a specialized supplier of a wide range of scaffolding products, including ringlock systems, steel boards, frame systems, shoring props, adjustable jack bases, scaffolding pipes and fittings, couplers, cuplock systems, kwickstage systems, aluminum scaffolding systems, and various other scaffolding and formwork accessories.
Our products are currently shipped to numerous countries across Southeast Asia, the Middle East, Europe, and the Americas.
Our core philosophy is simple: "Quality First, Customer Foremost, Service Utmost." We are fully dedicated to fulfilling your project needs and building long-term, mutually beneficial partnerships.
