# ゴム伸縮継手の品質確認チェックリスト\n\n## B2Bバイヤー向けガイド\n\n本記事は、海外の技術購買、施工会社、販売代理店、OEM/ODM顧客が、見積依頼前に必要な技術情報を整理できるように作成されています。\n\n## 配管部品: ゴム伸縮継手の品質確認チェックリスト\n\n製品名だけで判断せず、配管サイズ、圧力、接続規格、材質、流体、温度、設置位置、数量、図面を確認してください。\n\n関連製品にはゴム伸縮継手、伝力継手、管継手、フランジアダプター、金属ベローズ伸縮継手、防水スリーブなどがあります。\n\n## RFQ\n\n見積を早く正確にするには、DNサイズ、圧力等級、フランジ規格、材質、使用流体、温度、数量、図面または写真を送ってください。\n\n- DN / size\n- pressure rating\n- connection standard\n- material\n- working medium and temperature\n- quantity\n- drawing, photo or specification\n\n## Quality and Packing\n\n出荷前には外観、寸法、接続面、付属部品、表示、梱包方法を確認します。試験要求は生産前に確認してください。\n\n## Project Inquiry\n\nプロジェクト用の配管部品が必要な場合は、サイズ、圧力、接続規格、材質、流体、数量、図面をお送りください。
常见问题
?Does every rubber expansion joint require hydrostatic testing?
Not necessarily. Whether testing is performed on every unit, by batch sampling or under another agreed method depends on the product specification, purchase contract and approved inspection plan.
?Which dimensions should be checked before shipment?
Typical checks include nominal size, bore, face-to-face length, flange outside diameter, flange thickness, bolt-circle diameter, number and diameter of bolt holes, sealing surface and connection alignment.
?Is visual inspection enough to confirm product quality?
No. Visual inspection identifies surface defects, but quality control should also cover raw materials, internal reinforcement, curing records, metallic components, dimensions, traceability and required testing.
?How can the specified elastomer compound be verified?
Verification should use controlled raw-material records, batch identification, production documentation and agreed material checks. Colour or surface appearance is not sufficient.
?When should third-party inspection be specified?
Third-party inspection, witness points and special testing should be stated during the RFQ or order stage because they may affect cost, production planning and delivery time.
?Which quality documents can be supplied with the shipment?
Depending on the order, the shipment may include approved drawings, dimensional records, visual inspection reports, test reports, material documents, product photographs, packing lists and third-party inspection reports.