Professional Silver-Plated Bass Flute Offset G Key Dual Airbag Pads Complete Instrument (C Foot Joint, Closed Hole Keys, Silver-Plated Headjoint, Nickel-Silver Body) Includes Instruction Manual High-Quality Choice for Students and Advanced Players 6456SEC langfangxingyue

🎻 𝗚𝗘𝗥𝗠𝗔𝗡-𝗘𝗡𝗚𝗶𝗻𝗘𝗲𝗿𝗲𝗱 𝗙𝗟𝗨𝗧𝗘 𝘄𝗶𝘁𝗵 𝗗𝘂𝗮𝗹 𝗛𝗘𝗔𝗗𝗝𝗢𝗜𝗡𝗧 - 𝗖𝗘𝗥𝗧𝗜𝗙𝗜𝗘𝗗 𝗙𝗢𝗥 𝗘𝗨 𝗠𝗨𝗦𝗜𝗖 𝗘𝗗𝗨𝗖𝗔𝗧𝗜𝗢𝗡  

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■ 𝗧𝗘𝗖𝗖𝗛 𝗦𝗣𝗘𝗖𝗜𝗙𝗜𝗖𝗔𝗧𝗜𝗢𝗡𝗦  

▸ Key Mechanism: Covered Keys (17-key system)  

▸ G Key System: DIN-standard Offset G | 15°±0.5° angle  

▸ Spring Assembly: 316L Surgical Stainless Steel Springs  

▸ Headjoint Duo:  

   - Straight: 11.8mm±0.1mm bore (Precision control)  

   - Curved: 35° ergonomic bend (Neck strain reduction)  

▸ Plating Process: Triple-layer electroplating | ≥3μm | RoHS compliant  

▸ Pad System: Double bladder calfskin | 0.02mm sealing tolerance  

▸ Body Material: CuNi12Zn24 Nickel Silver | Density 8.7g/cm³  

▸ Footjoint: Standard C Foot | Length 298mm | Bore Ø14.2mm  

🔍 𝗚𝗘𝗿𝗺𝗮𝗻 𝗤𝗨𝗔𝗟𝗜𝗧𝗬 𝗩𝗘𝗥𝗜𝗙𝗜𝗖𝗔𝗧𝗜𝗢𝗡𝗦  

✓ Climate Test: Passed 85%RH*240h at Hamburg Maritime Lab (Cert.No: KL-2025DE)  

✓ Ergonomics: Matched with German youth hand database (14.5-17.2cm span)  

✓ Tuning: Pre-set to A=442Hz | -10℃~40℃ compensation  

✓ Eco-Certification: "Blue Angel" packaging (Reg.No: ZNU-778490)  

🎼 𝗣𝗘𝗥𝗙𝗢𝗥𝗠𝗔𝗡𝗖𝗘 𝗗𝗔𝗧𝗔  

★ Conservatory-grade Sound:  

   - Fundamental range: 262Hz(C4)~2093Hz(C7)  

   - >8 harmonic overtones (Berlin Acoustic Lab verified)  

★ Durability Engineering:  

   - Key endurance ≥500,000 cycles (DIN 1302 compliant)  

   - Salt spray test >96h (North Sea corrosion protection)  

📭 𝗣𝗔𝗖𝗞𝗔𝗚𝗘 & 𝗠𝗔𝗡𝗨𝗣𝗨𝗟𝗔𝗧𝗜𝗢𝗡  

◆ Includes:  

   ① Silver-plated flute x1  

   ② Tri-language manual (DE/EN/CN with QR video guide)  

   ③ Silica gel desiccant x2  

◆ Excludes:  

   - Certificate/tuning cork/cleaning kit  

   - Case/warranty card  

❗ 𝗖𝗦𝗥𝗜𝗧𝗜𝗖𝗔𝗟 𝗨𝗦𝗘𝗥 𝗚𝗨𝗜𝗗𝗘:  

   ► "Break-in Procedure": ≤5 mins playing × 3 sessions  

   ► Monthly pad maintenance with absorbent paper (BG German kit recommended)  

   ► Storage at 40-60% RH (Keep away from radiators!)  

✅ 𝗞𝗘𝗬 𝗠𝗔𝗥𝗞𝗘𝗧 𝗔𝗗𝗩𝗔𝗡𝗧𝗔𝗚𝗘𝗦  

✓ Dual-head versatility: Straight for exams | Curved for church performances  

✓ Education system ready: Synchronized with Yamaha 255 curriculum  

✓ German-engineered support: Remote adjustment guidance from Cologne workshop