fastener

any sizes , any head shapes ,or special parts with your print . We are professional manufacture of fasteners . We can provide almost all kinds of bolts and nuts  to you .  The material could be brass, aluminium, stainless steel, alloy steel, iron, etc.Our parts are wildly in the metallurgy, automobile, chemical, ship-building and , hardware engineering industries. They are used all over the world.All our engineers are familiar with the design programs AutoCADSolidWorks and Pro/Engineer. Whatever you need, give us a drawing, a sample or just the description of your idea and we will make the prototype.  CASTLE has a very professional quality control team in order to ensure all parts that leave the factory are of the highest standard.All materials are traced from purchasing to shipping. CoC is included in the inspection reports in each step. For each project, we have a plan with three main steps: 1. First article inspection. 2. In production inspection. 3. Pre-shipment inspection. All inspection reports are sent to customers for approval. All reports are submitted with COC. In order to meet clients' requirements, Castle can submit PPAP and CPK documents. Castle uses the following inspection equipment: 1. Hardness tester. 2. Yield strength tester. 3. Impact strength tester. 4. Metallographic analyzer 5. CMM.  CASTLE has Excellent QCl system, including PPAP and CPK.   

fastener