--- product_id: 515172650 title: "OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75\" Outside Diameter, 0.065\" Wall Thickness, 0.62\" Inside Diameter, 12\" Length" brand: "onlinemetals" price: "$5.21" currency: USD in_stock: false url: https://www.desertcart.us/products/515172650-onlinemetals-4130-alloy-steel-tube-round-unpolished-mill-finish-seamless store_origin: US region: United States of America --- # 0.75" OD precision MIL-T-6736 certified durability Seamless normalized strength OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length **Brand:** onlinemetals **Price:** $5.21 **Availability:** ❌ Out of Stock ## Summary > ⚙️ Elevate your build with precision steel that means business. ## Quick Answers - **What is this?** OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length by onlinemetals - **How much does it cost?** $5.21 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/515172650-onlinemetals-4130-alloy-steel-tube-round-unpolished-mill-finish-seamless) ## Best For - onlinemetals enthusiasts ## Why This Product - Trusted onlinemetals brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lightweight Yet Durable:** At just 0.49 lbs, this tube delivers robust support without adding unnecessary bulk. - • **Versatile High-Strength Alloy:** 4130 Chromoly steel balances machinability with exceptional toughness for demanding applications. - • **Precision Engineered Dimensions:** Exact 0.75" outside diameter with 0.065" wall thickness for reliable fit and performance. - • **Certified Military-Grade Quality:** Meets MIL-T-6736 standards, guaranteeing top-tier abrasion and impact resistance. - • **Seamless & Normalized Construction:** Flawless tube integrity ensures superior weldability and structural strength under pressure. ## Overview This 12-inch 4130 alloy steel round tube features a 0.75" outside diameter and 0.065" wall thickness, crafted seamless and normalized for enhanced strength and weldability. Certified to MIL-T-6736, it offers excellent abrasion and impact resistance, making it ideal for structural, aerospace, and high-performance applications where durability and precision matter. ## Description Alloy: 4130 | Material: Alloy Steel | Shape: Round Tube | Production Method: Seamless | Outer Diameter: 0.75 Inch | Inner Diameter: 0.62 Inch | Wall: 0.065 Inch | Item Length: 12 Inches Alloy Steel Round Tube 4130 Normalized Seamless offers good strength and weldability without compromising steel abrasion or impact resistance. 4130 can also be made even stronger through heat treatment. It is typically used in structural applications, gears, fasteners, and aircraft exteriors. Tube is designed to act as structural support, whereas Pipe is designed to carry liquid/gas/material from one place to another. Alloy steels are made by combining carbon steel with one or several alloying elements, such as manganese, silicon, nickel, titanium, copper, chromium and aluminum. These metals are added to produce specific properties that are not found in regular carbon steel. The elements are added in varying proportions (or combinations) making the material take on different aspects such as increased hardness, increased corrosion resistance, increased strength, improved formability (ductility); the weldability can also change. UNS G41300, AISI 4130, C4130, Alloy Steel, Chrome-Moly, Chromoly This product weighs 0.49 pounds and meets the following specs: MIL-T-6736 ## Features - 4130 steel is highly versatile and offers good strength, weldability, impact and abrasion resistance while also being easy to machine. - 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length - Normalized - Alloy Steel 4130 is is typically used in structural applications, gears, fasteners, and aircraft exteriors. - Meets MIL-T-6736 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B088KPTFWW | | Batteries Required? | No | | Colour | Steel | | Customer Reviews | 3.4 3.4 out of 5 stars (2) | | Date First Available | 22 Dec. 2022 | | Item Package Quantity | 1 | | Item Weight | 222 g | | Item model number | OM-7329120 | | Manufacturer | OnlineMetals | | Material | Alloy Steel, Metal | | Measurement System | English | | Part Number | OM-7329120 | | Product Dimensions | 30.48 x 1.91 x 0.1 cm; 222.26 g | | Size | 0.75" OD | 0.065" Thk | | Style | 12 length | ## Product Details - **Brand:** OnlineMetals - **Colour:** Steel - **Item length:** 12 Inches - **Item weight:** 222 g - **Manufacturer:** OnlineMetals - **Material:** Alloy Steel, Metal - **Nominal wall thickness:** 0.065 inches - **Outside diameter:** 0.75 Inches - **Product dimensions:** 30.5L x 1.9W centimetres ## Images ![OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length - Image 1](https://m.media-amazon.com/images/I/21BUiJt2W4L.jpg) ![OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length - Image 2](https://m.media-amazon.com/images/I/31tayuhOPbL.jpg) ![OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length - Image 3](https://m.media-amazon.com/images/I/41fcpsLmYdL.jpg) ![OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length - Image 4](https://m.media-amazon.com/images/I/41uReGVXbeL.jpg) ![OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length - Image 5](https://m.media-amazon.com/images/I/61HkMRmXthL.jpg) ## Available Options This product comes in different **Size Name, Style Name** options. ## Frequently Bought Together - OnlineMetals 4130 Alloy Steel Tube-Round, Unpolished (Mill) Finish, Seamless, Normalized, MIL-T 6736, 0.75" Outside Diameter, 0.065" Wall Thickness, 0.62" Inside Diameter, 12" Length - Joogto Indexable Lathe Turning Tool 14Pcs Kit 3/8'' 10mm Shank 7 Pcs Metal Lathe Tools Holder Set for Turning Grooving Threading Boring with 7 Pcs Carbide Inserts Turning Inserts Carbide Turning Tool - AUTOTOOLHOME 6pc HSS CNC Straight Shank End Mill Cutter Drill Bit 3.2, 4.8, 6.35, 8, 9.5, 12.7mm --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/515172650-onlinemetals-4130-alloy-steel-tube-round-unpolished-mill-finish-seamless](https://www.desertcart.us/products/515172650-onlinemetals-4130-alloy-steel-tube-round-unpolished-mill-finish-seamless) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-30*