Galvanized Single Swivel Single Adjustable Scaffold Plank Hardware Coupler
This product is one customized Scaffolding Fasteners made of heavy steel of Q235 used for building Construction, Gorged Article, and a professional machine strength forms the shape and global standard welding skill finishes it. The cutting edge of this screw plate is very smooth and the tolerance is controlled within 0.05~0.1mm according to the drawing required measure, which is a very high standard in the whole industry. The professional welding standard makes it look very nice.
We also offer various customized laser cutting, forming, bending, and welding services for steel, copper, aluminum, etc, materials, and the thickness can be arranged from 1~50mm.
Here are the common specifications for galvanized steel couplers:
1. Dimensions
- Nominal Pipe Size (NPS) or Diameter Nominal (DN): This indicates the standard size designation for the coupling to match different pipe diameters. For example, in ASTM A865/A865M standard it covers couplings for steel pipes in the range of NPS 1/8 to NPS 20 (equivalent to DN 6 to DN 500). Common sizes in practical applications may include 1/2", 1", 2" etc., with corresponding outside diameters and wall thicknesses that conform to industry-recognized pipe dimension standards like ANSI B36.10M for welded and seamless wrought - steel pipe dimensions.
- Length: The length of the coupler varies depending on its type and application. For instance, some rod - type galvanized steel couplers may have a specified length like the Festo FK series self - aligning rod coupler with a length of 157 mm.
2. Material
- Base Material: Usually made from carbon steel, which can be produced through processes such as open - hearth, electric - furnace, or basic - oxygen methods. The steel needs to meet certain chemical composition requirements, especially regarding the content of elements like phosphorus and sulfur.
- Galvanization: Zinc coating is commonly applied by hot - dipping to provide corrosion resistance. The galvanization process should comply with standards such as ASTM - A - 123.
3. Threading and Connection
- Thread Standards: Threaded galvanized steel couplers should meet specific threading standards. For example, they may comply with ASTM A865 and ANSI B1.20.1 for threading, dimensions, and pipe specifications. The threads ensure a secure connection between the coupler and the pipe, and different thread pitches and profiles are used depending on the application and pipe size.
4. Mechanical and Performance
- Strength: They need to have sufficient tensile and shear strength to withstand the forces exerted during use, such as the weight of materials and equipment in scaffolding applications or the pressure in pipeline systems. The strength requirements are related to the material properties and manufacturing quality.
- Corrosion Resistance: Thanks to the galvanized coating, they are designed to resist corrosion in various environments. The thickness and quality of the zinc coating play a crucial role in determining the corrosion-resistance lifespan.
- Stress Corrosion Resistance: Some galvanized steel couplers, like the Festo FK series mentioned, may have additional features such as moderate stress corrosion - resistant properties, which are important in applications where stress and corrosive media co - exist.
5. Certification and Compliance
- Standards Compliance: They should comply with relevant national and international standards. This may include ASTM (American Society for Testing and Materials) standards, ANSI (American National Standards Institute) standards, and in some regions, BS (British Standards) or DIN (Deutsches Institut für Normung) standards. Additionally, products may need to meet certifications such as ISO 9001:2015 for quality management systems and CE for compliance with European Union safety, health, and environmental protection requirements.
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