Q355B Q235B Steel Concrete Tunnel Formwork Reusable Sa2.5 Shot Blasting Derusting

The full name of this product is Tunnel Steel Formwork, with common other names including Tunnel Lining Steel Formwork, Tunnel Concrete Steel Mould, Trolley-Matched Steel Formwork, and Assembled Tunnel Steel Formwork. The core keywords cover Tunnel Steel Mould, Lining Steel Formwork, Custom Steel Formwork, Tunnel Construction Steel Formwork, and High-Strength Tunnel Formwork. Widely applicable to scenarios such as overseas project bidding, cross-border e-commerce display, international exhibition promotion, and technical cooperation negotiations, it is a core forming equipment for various tunnel constructions.

In terms of materials, the product adopts a graded material selection design: the main plate is made of Q235B carbon structural steel, which is the first choice for conventional tunnels, combining high performance and cost-effectiveness; the load-bearing structure is made of Q355B low alloy high-strength steel, specially adapted to the harsh requirements of large-section and high-load tunnels; auxiliary accessories such as bolts and pins are made of 45# steel to ensure connection stability. The surface treatment adopts a composite process of shot blasting derusting (Sa2.5 Grade) + epoxy zinc-rich primer + polyurethane topcoat/hot-dip galvanizing, which has excellent rust and corrosion resistance and can be adapted to various complex construction conditions.