{"product_id":"startnow-laser-nozzle-d28-pb-single-double-layer","title":"Startnow Laser Nozzle D28 PBSeries Single Double Layer M11 T2 Copper Laser Nozzle for Penta Precitec Head","description":"\u003ch3\u003e\u003cstrong\u003eD28mm Fiber Laser Bevel Cutting Nozzle\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003eSize:D28-H20-M11\/D28-H22.5-M11\u003c\/h3\u003e\n\u003ch3\u003eModel:PB-H20-S\/D,PB-H22.5-S\/D\u003c\/h3\u003e\n\u003ch2\u003e1. Core Material: Premium T2 Red Copper\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Thermal Conductivity \u0026amp; Burn Resistance: Made of high-purity T2 red copper with excellent thermal conductivity. It dissipates heat rapidly during high-power thick-plate or bevel cutting to avoid burn erosion at the nozzle tip.\u003c\/li\u003e\n\u003cli\u003eAnti-splash Adhesion: Micro-level polishing on both outer surface and inner bore prevents slag and metal sparks from sticking, greatly extending the service life of each nozzle.\u003c\/li\u003e\n\u003cli\u003eUltra-high Concentricity (≤0.01 mm): Precision CNC one-piece machining ensures the laser beam and assist gas eject coaxially, delivering vertical, smooth and burr-free cutting edges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e2. Structural Features \u0026amp; Design Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eD28 Wide Flange for Stable Gas Flow: Knurled outer flange for easy hand-tight installation and removal. The large base forms a tight seal with the laser head gas path to eliminate gas leakage under high-speed airflow.\u003c\/li\u003e\n\u003cli\u003eDual Height Options: H20 \/ H22.5. Customized for the optical path and focal length of Bodor bevel cutting heads to avoid workpiece collision during tilted cutting.\u003c\/li\u003e\n\u003cli\u003eScientific Single \/ Double Layer Design:\n\u003cul\u003e\n\u003cli\u003eSingle Layer (PB-H20-S \/ PB-H22.5-S): For Nitrogen (N₂) \/ Air. Ideal for high-speed fusion cutting of stainless steel, aluminum alloy and copper plates.\u003c\/li\u003e\n\u003cli\u003eDouble Layer (PB-H20-D \/ PB-H22.5-D): Built-in flow guide ring. For Oxygen (O₂). Optimized for efficient oxidation cutting of carbon steel and low-alloy steel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e3. Installation \u0026amp; Operation Guide\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCoaxial Calibration: After replacing a new nozzle, use transparent tape for spot testing to verify concentricity and center the laser spot.\u003c\/li\u003e\n\u003cli\u003eHeight Selection: Choose H20 or H22.5 according to your laser head focal length and cutting recipe, to prevent head collision or unstable gas flow caused by mismatched height.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"startnowlaser","offers":[{"title":"PB-H20-S(D28-H20-M11) \/ 1.0mm","offer_id":67865351356489,"sku":null,"price":3.12,"currency_code":"USD","in_stock":true},{"title":"PB-H20-S(D28-H20-M11) \/ 1.2mm","offer_id":67865351389257,"sku":null,"price":3.12,"currency_code":"USD","in_stock":true},{"title":"PB-H20-S(D28-H20-M11) \/ 1.4mm","offer_id":67865351422025,"sku":null,"price":3.12,"currency_code":"USD","in_stock":true},{"title":"PB-H20-S(D28-H20-M11) \/ 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