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  • “AT provided me with tracking info for the shipment when requested. Received the Professional Tunnel Bolt Fastener two days early. Very Impressed with the quality. Can't beat the price. Reliable seller. No worries here!”
    Jerome Plourde
    power semiconductors
  • “This is one of the most favourable purchases I’ve made.Wonderful Professional Tunnel Bolt Fastener with good price!”
    Mr.valeriia
    ark-plas products
  • “Timely delivery, everything one needs in one neat package.”
    Mrs.nannapachara
    qual-craft industries
  • “Super! Thanks!”
    John Mclean
    "ЛАБОРАТОРИЯ РАДИОЛОКАЦИИ И НАВИГАЦИИ" ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ
  • “Wow! What a great Professional Tunnel Bolt Fastener ! I searched for years for something like this. Finally I found AT . It's a really great product.”
    Grace Power
    22nd Century Technologies

Professional Tunnel Bolt Fastener

- manufacturer, factory, supplier from China

(Total 1 Products for Professional Tunnel Bolt Fastener)

  • Railway customized Tunnel Bolts

    Railway customized Tunnel Bolts

    • Brand: AT
    • Packaging: Bag /Box /metal pail
    • Supply Ability: 300000 PCS/month
    • Min. Order: 20000 Piece/Pieces

    Tunnel Bolts Segment bolts are a kind of special fasteners used by shield tunneling machines to connect and fasten their segments during tunneling. Through the connection of this type of bolt, several arched segments can be connected into a circle , So as to support the entire tunnel surface, which is also called...

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