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The PDF file contains all our common key dimensions and codes, as well as some common sense introductions. After downloading them, you can tell us the quantity you need. We will work out a detailed production plan based on the delivery date, surface, size, packaging, and other requirements and give you a more satisfactory price. Key Clamp Fittings are used to link multiple pipes together to build handrails, guardrails, safety railings, outdoor recreational facilities, fences, safety railings, fitness facilities, roof guardrails, workbenches, temporary brackets, etc. or DIY structures such as chairs, tables, tool benches, etc. It is also often called structural pipe fittings or slip pipe fittings, pipe clamp fittings, etc. It is made of cast iron (commonly malleable cast iron and ductile iron) using sand casting technology, and is galvanized or powder-coated to increase surface corrosion and oxidation resistance. When using it to assemble some systems, it is necessary to test whether it meets local standards. Its common structures include: tee is used to form a "T" shape for pipes, elbow is used to connect the ends of pipes from different directions; cross is used to form a cross shape for pipes; joint is used to connect and extend pipes; base, flange, support, brackets are used to fix the entire system. In addition, there are fittings with other functions.