{"product_id":"square-carbon-fiber-tube-200mm-rc-airplane-model","title":"Square Carbon Fiber Tube 200mm — RC Airplane \u0026 Model Build","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right size square carbon fiber tube for my project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the outer dimension (OD) to your frame slot or clamp opening. For example, a 5×5mm OD tube fits a 5mm square channel. The inner dimension (ID) determines how much material passes through — typically used for push rods or internal wiring. All tubes in this listing are 200mm (≈7.87\\u201d) long. If you need a specific length, contact us to confirm before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong are these square carbon fiber tubes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Carbon fiber composite tubes are generally significantly stiffer and stronger per unit weight than aluminum or fiberglass equivalents. The exact tensile and flexural strength depends on the fiber layup and resin system used. For structural RC and model applications, these tubes typically handle the loads encountered in lightweight airframe and drone frame construction. For load-critical engineering applications, contact us to confirm specifications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these tubes be used outdoors or in wet conditions?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Carbon fiber itself does not rust or corrode. The epoxy resin matrix provides good moisture resistance for typical outdoor RC use. For prolonged submersion or harsh chemical environments, additional sealing is generally recommended. The tubes are suitable for outdoor RC airplane, drone, and model use in normal weather conditions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these tubes compatible with standard RC hardware and connectors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These square carbon fiber tubes are designed to fit standard square tube clamps and frame slots used in RC airplane and drone construction. The outer dimensions (3mm, 4mm, 5mm, 6mm, 8mm, 10mm) correspond to common hardware sizing. Always verify your clamp or connector inner dimension matches the tube OD before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I cut these tubes to a shorter length?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Carbon fiber tubes can generally be cut with a rotary tool, fine-tooth saw, or diamond-coated cutting wheel. Always wear a dust mask and eye protection when cutting carbon fiber, as the dust is an irritant. Sand cut edges smooth to prevent delamination.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which size should I choose for a typical RC airplane wing spar or fuselage stringer?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For small park flyers and micro RC models, the 3×3mm or 4×4mm tubes are typically sufficient. Mid-size sport models generally use 5×5mm or 6×6mm tubes. Larger or heavier builds often benefit from the 8×8mm or 10×10mm options. Match the tube size to your plan's specified spar dimension for best results.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many pieces do I need to order for a typical build?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This listing offers 1, 4, 10, and 20-piece quantity options. A single RC airplane wing typically requires 2 spar tubes. Ordering a 4-pack or 10-pack is a cost-effective choice for multi-build projects or to keep spares on hand.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003c!-- ① OVERVIEW --\u003e\n  \u003ch2\u003eSquare Carbon Fiber Tube 200mm — Lightweight Structural Tubing for RC Airplanes \u0026amp; Model Builds\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003cp\u003eWhen every gram counts and structural failure isn't an option, builders of RC airplanes, drones, and precision scale models need tubing that delivers real rigidity without adding dead weight. Aluminum bends, fiberglass flexes, and wood warps — but a square carbon fiber tube holds its shape under stress, vibration, and repeated loading cycles that would fatigue lesser materials.\u003c\/p\u003e\n    \u003cp\u003eEach piece in this listing is a pultruded square carbon fiber tube, 200mm (≈7.87\") long, with a gloss black finish. Available outer dimensions run from 3mm (≈1\/8\") up to 10mm (≈3\/8\"), with wall thicknesses that are typically 0.5mm on the smaller sizes and 1mm on the larger sizes — giving you a range of inner bores from 2mm to 8mm. Order as a single piece or in sets of 4, 10, or 20 to stock your build bench.\u003c\/p\u003e\n    \u003cp\u003eThese square carbon fiber tubes are well suited for RC airplane wing spars and fuselage stringers, lightweight drone frame rails, push rod guides in control linkages, and structural members in architectural scale models. Their consistent cross-section makes them easy to slot into standard square tube clamps and frame connectors used across the RC hobby and model-engineering communities.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ② COMPATIBILITY BAR --\u003e\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard square tube clamps and frame slots sized to match the selected OD (3 \/ 4 \/ 5 \/ 6 \/ 8 \/ 10 mm). Verify your hardware's inner channel dimension before ordering.\n  \u003c\/div\u003e\n\n  \u003c!-- ③ KEY FEATURES --\u003e\n  \u003ch2\u003e✅ Key Features of These Square Carbon Fiber Tubes\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eLow Weight, High Stiffness\u003c\/strong\u003e — Carbon fiber composite construction delivers a stiffness-to-weight ratio that outperforms aluminum tubing of the same cross-section, keeping your RC airplane or drone frame light without sacrificing rigidity.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eSix OD Options in One Listing\u003c\/strong\u003e — Choose from 3×3mm, 4×4mm, 5×5mm, 6×6mm, 8×8mm, or 10×10mm outer dimensions to match your plan's specified spar or rail size exactly, eliminating guesswork and fitment issues.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eConsistent 200mm Length\u003c\/strong\u003e — Every tube ships at a uniform 200mm (≈7.87\") length, making them easy to use as-is for standard spar runs or to cut down with a rotary tool for shorter structural members.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eCorrosion-Free Construction\u003c\/strong\u003e — Carbon fiber and epoxy resin do not rust or oxidize, making these tubes a reliable choice for outdoor RC airplane use and builds that will see varying humidity and temperature conditions.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e🔲\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eSquare Profile for Positive Clamp Engagement\u003c\/strong\u003e — The flat faces of a square carbon fiber tube resist rotation inside clamps and connectors, providing a more secure mechanical connection than round tubing in torque-loaded joints.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eFlexible Quantity Packs\u003c\/strong\u003e — Available in 1, 4, 10, and 20-piece options so you can grab a single piece for a repair or stock up for a full multi-model build run at a lower per-piece cost.\u003c\/span\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n  \u003ch2\u003e📐 Technical Specifications — Square Carbon Fiber Tube\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbon fiber reinforced epoxy composite (pultruded)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eSquare hollow tube\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eGloss black\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e200mm (≈7.87\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable OD × ID\u003c\/th\u003e\n\u003ctd\u003e3×2mm | 4×3mm | 5×4mm | 6×5mm | 8×6mm | 10×8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWall Thickness (typical)\u003c\/th\u003e\n\u003ctd\u003e0.5mm (3–6mm OD sizes) \/ 1mm (8–10mm OD sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eQuantity Options\u003c\/th\u003e\n\u003ctd\u003e1 pc \/ 4 pcs \/ 10 pcs \/ 20 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTensile Strength\u003c\/th\u003e\n\u003ctd\u003eSee variant options — contact us to confirm for load-critical use\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCompatible Hardware\u003c\/th\u003e\n\u003ctd\u003eStandard square tube clamps and frame connectors matching selected OD\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRecommended Applications\u003c\/th\u003e\n\u003ctd\u003eRC airplane spars, drone frame rails, model structural members, push rod guides\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e Always wear a dust mask and eye protection when cutting carbon fiber. Carbon fiber dust is an irritant — sand cut edges smooth after trimming.\n  \u003c\/div\u003e\n\n  \u003c!-- ⑤ FAQ --\u003e\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right size square carbon fiber tube for my project?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMatch the outer dimension (OD) to your frame slot or clamp opening. For example, a 5×5mm OD tube fits a 5mm square channel. The inner dimension (ID) determines the bore — useful for routing push rods or wiring internally. All tubes in this listing are 200mm (≈7.87\") long. If you need a different length, contact us before ordering.\u003c\/p\u003e\n        \u003cp\u003eQuick reference: 3mm OD → 2mm ID | 4mm OD → 3mm ID | 5mm OD → 4mm ID | 6mm OD → 5mm ID | 8mm OD → 6mm ID | 10mm OD → 8mm ID.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow strong are these square carbon fiber tubes?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eCarbon fiber composite tubes are generally significantly stiffer and stronger per unit weight than aluminum or fiberglass equivalents. For typical RC airplane spar and drone frame rail applications, these tubes handle the bending and vibration loads encountered in lightweight airframe construction. For load-critical engineering applications, contact us to confirm the specific fiber layup and resin specifications.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these tubes be used outdoors or in wet conditions?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eCarbon fiber itself does not rust or corrode, and the epoxy resin matrix provides good moisture resistance for typical outdoor RC use. These tubes are suitable for outdoor RC airplane and drone use in normal weather. For prolonged submersion or exposure to harsh chemicals, additional sealing is generally recommended.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these tubes compatible with standard RC hardware and connectors?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. The outer dimensions (3mm, 4mm, 5mm, 6mm, 8mm, 10mm) correspond to common square tube clamp and frame connector sizing used in RC airplane and drone construction. Always verify that your clamp or connector's inner channel dimension matches the tube OD you select before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I cut these tubes to a shorter length?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. Carbon fiber tubes can generally be cut with a rotary tool fitted with a cutting disc, a fine-tooth saw, or a diamond-coated cutting wheel. Always wear a dust mask and eye protection — carbon fiber dust is an irritant. Sand cut edges smooth after trimming to prevent delamination at the cut face.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich size should I choose for a typical RC airplane wing spar or fuselage stringer?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eFor small park flyers and micro RC models, the 3×3mm or 4×4mm tubes are typically sufficient. Mid-size sport models generally use 5×5mm or 6×6mm tubes. Larger or heavier builds often benefit from the 8×8mm or 10×10mm options. Always match the tube size to the dimension specified in your build plan for best structural results.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow many pieces do I need to order for a typical build?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eA single RC airplane wing typically requires 2 spar tubes. A full airframe with fuselage stringers may use 4–10 pieces depending on the design. Ordering a 4-pack or 10-pack is generally more cost-effective for multi-build projects or to keep spares on hand. The 20-pack option is ideal for workshop stock or club group orders.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ⑥ CTA BAR --\u003e\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"3*3*2*2*200mm \/ 1pcs","offer_id":52331321524498,"sku":"GLFBNHHKKMX0424x1","price":4.07,"currency_code":"USD","in_stock":true},{"title":"4*4*3*3*200mm \/ 1pcs","offer_id":52331321557266,"sku":"GLFBNHHKKMX0425x1","price":4.42,"currency_code":"USD","in_stock":true},{"title":"5*5*4*4*200mm \/ 1pcs","offer_id":52331321590034,"sku":"GLFBNHHKKMX0426x1","price":5.02,"currency_code":"USD","in_stock":true},{"title":"6*6*5*5*200mm \/ 1pcs","offer_id":52331321622802,"sku":"GLFBNHHKKMX0427x1","price":5.83,"currency_code":"USD","in_stock":true},{"title":"8*8*6*6*200mm \/ 1pcs","offer_id":52331321655570,"sku":"GLFBNHHKKMX0428x1","price":7.0,"currency_code":"USD","in_stock":true},{"title":"10*10*8*8*200mm \/ 1pcs","offer_id":52331321688338,"sku":"GLFBNHHKKMX0429x1","price":8.28,"currency_code":"USD","in_stock":true},{"title":"3*3*2*2*200mm \/ 4pcs","offer_id":52331321721106,"sku":"GLFBNHHKKMX0424x4","price":7.87,"currency_code":"USD","in_stock":true},{"title":"4*4*3*3*200mm \/ 4pcs","offer_id":52331321753874,"sku":"GLFBNHHKKMX0425x4","price":9.23,"currency_code":"USD","in_stock":true},{"title":"5*5*4*4*200mm \/ 4pcs","offer_id":52331321786642,"sku":"GLFBNHHKKMX0426x4","price":11.55,"currency_code":"USD","in_stock":true},{"title":"6*6*5*5*200mm \/ 4pcs","offer_id":52331321819410,"sku":"GLFBNHHKKMX0427x4","price":14.95,"currency_code":"USD","in_stock":true},{"title":"8*8*6*6*200mm \/ 4pcs","offer_id":52331321852178,"sku":"GLFBNHHKKMX0428x4","price":19.71,"currency_code":"USD","in_stock":true},{"title":"10*10*8*8*200mm \/ 4pcs","offer_id":52331321884946,"sku":"GLFBNHHKKMX0429x4","price":25.15,"currency_code":"USD","in_stock":true},{"title":"3*3*2*2*200mm \/ 10pcs","offer_id":52331321917714,"sku":"GLFBNHHKKMX0424x10","price":15.35,"currency_code":"USD","in_stock":true},{"title":"4*4*3*3*200mm \/ 10pcs","offer_id":52331321950482,"sku":"GLFBNHHKKMX0425x10","price":18.84,"currency_code":"USD","in_stock":true},{"title":"5*5*4*4*200mm \/ 10pcs","offer_id":52331321983250,"sku":"GLFBNHHKKMX0426x10","price":24.55,"currency_code":"USD","in_stock":true},{"title":"6*6*5*5*200mm \/ 10pcs","offer_id":52331322016018,"sku":"GLFBNHHKKMX0427x10","price":33.03,"currency_code":"USD","in_stock":true},{"title":"8*8*6*6*200mm \/ 10pcs","offer_id":52331322048786,"sku":"GLFBNHHKKMX0428x10","price":47.45,"currency_code":"USD","in_stock":true},{"title":"10*10*8*8*200mm \/ 10pcs","offer_id":52331322081554,"sku":"GLFBNHHKKMX0429x10","price":61.19,"currency_code":"USD","in_stock":true},{"title":"3*3*2*2*200mm \/ 20pcs","offer_id":52331322114322,"sku":"GLFBNHHKKMX0424x20","price":28.63,"currency_code":"USD","in_stock":true},{"title":"4*4*3*3*200mm \/ 20pcs","offer_id":52331322147090,"sku":"GLFBNHHKKMX0425x20","price":35.43,"currency_code":"USD","in_stock":true},{"title":"5*5*4*4*200mm \/ 20pcs","offer_id":52331322179858,"sku":"GLFBNHHKKMX0426x20","price":47.45,"currency_code":"USD","in_stock":true},{"title":"6*6*5*5*200mm \/ 20pcs","offer_id":52331322212626,"sku":"GLFBNHHKKMX0427x20","price":65.13,"currency_code":"USD","in_stock":true},{"title":"8*8*6*6*200mm \/ 20pcs","offer_id":52331322245394,"sku":"GLFBNHHKKMX0428x20","price":93.83,"currency_code":"USD","in_stock":true},{"title":"10*10*8*8*200mm \/ 20pcs","offer_id":52331322278162,"sku":"GLFBNHHKKMX0429x20","price":121.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of8_4042aeb6-5b0d-4c6f-8d23-791b2cd41432.jpg?v=1780900915","url":"https:\/\/homediyer.com\/products\/square-carbon-fiber-tube-200mm-rc-airplane-model","provider":"HomeDIYer","version":"1.0","type":"link"}