{"product_id":"high-precision-cnc-machined-aluminum-parts-custom-machined-metal-parts-stainless-steel-cylindrical-sleeve","title":"High-Precision CNC Machined Aluminum \u0026 Stainless Steel Parts – Custom Metal Cylindrical Sleeves","description":"\u003cp data-start=\"0\" data-end=\"411\"\u003eGet precision, speed, and reliability with \u003cstrong data-start=\"43\" data-end=\"89\"\u003eHigh Precision CNC Machined Aluminum Parts\u003c\/strong\u003e from Proto Industry Manufactory — your one-stop solution for custom metal and plastic components. Whether you need stainless steel cylindrical sleeves, aluminum parts, or custom machined metal components, our CNC machining services deliver accuracy, durability, and rapid turnaround for prototypes and production alike.\u003c\/p\u003e\n\u003ch2 data-start=\"413\" data-end=\"453\"\u003eCustom CNC Machining for Any Design\u003c\/h2\u003e\n\u003cp data-start=\"454\" data-end=\"757\"\u003eUpload your STP, IGS, STL, PDF, or DWG files and let our advanced CNC machines produce your parts with tolerances as tight as 0.01–0.05mm. From prototypes to small or large production runs, every component is manufactured to your exact specifications, ensuring seamless integration into your projects.\u003c\/p\u003e\n\u003ch2 data-start=\"759\" data-end=\"787\"\u003eWide Material Selection\u003c\/h2\u003e\n\u003cp data-start=\"788\" data-end=\"830\"\u003eChoose from over 30 materials including:\u003c\/p\u003e\n\u003cul data-start=\"831\" data-end=\"1124\"\u003e\n\u003cli data-start=\"831\" data-end=\"894\"\u003e\n\u003cp data-start=\"833\" data-end=\"894\"\u003e\u003cstrong data-start=\"833\" data-end=\"852\"\u003eAluminum Alloys\u003c\/strong\u003e (EN AW-6061, EN AW-7075, custom alloys)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"895\" data-end=\"958\"\u003e\n\u003cp data-start=\"897\" data-end=\"958\"\u003e\u003cstrong data-start=\"897\" data-end=\"916\"\u003eStainless Steel\u003c\/strong\u003e (1.4301, 1.4404, 1.4571, custom grades)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"959\" data-end=\"1014\"\u003e\n\u003cp data-start=\"961\" data-end=\"1014\"\u003e\u003cstrong data-start=\"961\" data-end=\"978\"\u003eSteel \u0026amp; Brass\u003c\/strong\u003e (C45, 16MnCr5, CuZn39Pb3, custom)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1015\" data-end=\"1051\"\u003e\n\u003cp data-start=\"1017\" data-end=\"1051\"\u003e\u003cstrong data-start=\"1017\" data-end=\"1029\"\u003eTitanium\u003c\/strong\u003e (Grade 2 \u0026amp; Grade 5)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1052\" data-end=\"1124\"\u003e\n\u003cp data-start=\"1054\" data-end=\"1124\"\u003e\u003cstrong data-start=\"1054\" data-end=\"1066\"\u003ePolymers\u003c\/strong\u003e (ABS, POM, Nylon, PC, PEEK, PTFE, and custom materials)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1126\" data-end=\"1149\"\u003eVersatile Finishes\u003c\/h2\u003e\n\u003cp data-start=\"1150\" data-end=\"1254\"\u003eEnhance your parts with a variety of surface treatments to match functional or aesthetic requirements:\u003c\/p\u003e\n\u003cul data-start=\"1255\" data-end=\"1414\"\u003e\n\u003cli data-start=\"1255\" data-end=\"1302\"\u003e\n\u003cp data-start=\"1257\" data-end=\"1302\"\u003ePolishing, matte, anodizing, powder coating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1303\" data-end=\"1364\"\u003e\n\u003cp data-start=\"1305\" data-end=\"1364\"\u003eElectropolishing, passivation, gold plating, zinc coating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1365\" data-end=\"1414\"\u003e\n\u003cp data-start=\"1367\" data-end=\"1414\"\u003eBlack oxide, tempering, carburising, and more\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1416\" data-end=\"1457\"\u003eRapid Turnaround \u0026amp; Quality Assurance\u003c\/h2\u003e\n\u003cp data-start=\"1458\" data-end=\"1730\"\u003eProto Industry offers fast production with lead times of just \u003cstrong data-start=\"1520\" data-end=\"1532\"\u003e3–5 days\u003c\/strong\u003e for prototypes. Every part undergoes stringent inspections at multiple stages — material checks, in-process sampling, and pre-shipment quality control — ensuring top-tier accuracy and durability.\u003c\/p\u003e\n\u003ch2 data-start=\"1732\" data-end=\"1775\"\u003eWhy Choose Proto Industry Manufactory?\u003c\/h2\u003e\n\u003cul data-start=\"1776\" data-end=\"2095\"\u003e\n\u003cli data-start=\"1776\" data-end=\"1809\"\u003e\n\u003cp data-start=\"1778\" data-end=\"1809\"\u003e\u003cstrong data-start=\"1778\" data-end=\"1786\"\u003eMOQ:\u003c\/strong\u003e 1PCS sample accepted\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1810\" data-end=\"1865\"\u003e\n\u003cp data-start=\"1812\" data-end=\"1865\"\u003e\u003cstrong data-start=\"1812\" data-end=\"1837\"\u003eFast Global Shipping:\u003c\/strong\u003e DHL, FedEx, UPS, and more\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1866\" data-end=\"1945\"\u003e\n\u003cp data-start=\"1868\" data-end=\"1945\"\u003e\u003cstrong data-start=\"1868\" data-end=\"1889\"\u003eFlexible Payment:\u003c\/strong\u003e TT or PayPal (50% deposit, balance on finished parts)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1946\" data-end=\"2009\"\u003e\n\u003cp data-start=\"1948\" data-end=\"2009\"\u003e\u003cstrong data-start=\"1948\" data-end=\"1971\"\u003ePrivacy \u0026amp; Security:\u003c\/strong\u003e NDA available for sensitive designs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2010\" data-end=\"2095\"\u003e\n\u003cp data-start=\"2012\" data-end=\"2095\"\u003e\u003cstrong data-start=\"2012\" data-end=\"2031\"\u003eExpert Support:\u003c\/strong\u003e Engineers assist with design, material, and finishing options\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2097\" data-end=\"2341\"\u003eWhether you need precision \u003cstrong data-start=\"2124\" data-end=\"2209\"\u003ecylindrical sleeves, custom aluminum components, or complex stainless steel parts\u003c\/strong\u003e, Proto Industry makes it simple: send your 3D files, select materials and finishes, and receive high-quality machined parts fast.\u003c\/p\u003e","brand":"Congo Basin Group","offers":[{"title":"Send drawing quote","offer_id":53075919208755,"sku":"14:350853#Send drawing quote","price":27.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/2167\/9667\/files\/S463326015abc43fbb6566ce67490f02bB.webp?v=1771760400","url":"https:\/\/www.congobasin.ai\/products\/high-precision-cnc-machined-aluminum-parts-custom-machined-metal-parts-stainless-steel-cylindrical-sleeve","provider":"CongoBasinGroup.com","version":"1.0","type":"link"}