恵信工業 List of Products and Services

The "GT Method" is a NETIS-registered construction method that addresses the challenges of conventional non-welding methods. By using non-welded fittings such as "GT Hooks" and "GT Hoops," it enhances construction efficiency while ensuring the safety and durability of foundation work. It can accommodate large diameters of φ3000 and above, improving flexibility and strength compared to conventional methods. 【Features】 ■ Compatible with large-diameter deep foundation piles ■ Non-welded fittings prevent deformation and twisting ■ Achieves high strength through a combination of anti-loosening nuts and custom wire materials ■ Utilizes circular hoops to provide excellent strength and workability ■ Implements efficient processes with dedicated assembly jigs *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Special Construction Method

We would like to introduce the "GT Hoop" that we handle. With the upset butt welding machine, we can manufacture large diameters ranging from D13 to D32. Whether produced in the factory or constructed on-site, the quality remains unchanged, and production is not affected by weather conditions. Additionally, it is possible to eliminate the external welding bumps, thereby solving the issue of concrete cover. 【Features】 ■ No flare welding on-site ■ The spacing of the hoop joint sections in the rebar cage is uniform and precise ■ Improved workability due to the absence of overlaps and hooks ■ Butt pressure welding is strong against compression and tension, preventing deformation of the hoop bars *For more details, please refer to the PDF materials or feel free to contact us.

• Subsidiary materials

We would like to introduce our non-welded fittings, the 'GT Hook.' By combining anti-loosening nuts and custom wire, it maintains an accurate shape. It can be used not only for cast-in-place piles but also in civil engineering and construction structural work. Please feel free to contact us when you need assistance. 【Product Lineup (Partial)】 ■ Type A: For fixing main rebar × reinforcement frame (FB) ■ Type B: For fixing main rebar × reinforcement frame (FB) ■ Type BW: For fixing main rebar × reinforcement frame (FB) × anti-twist reinforcement bar ■ Type SJ: For overlapping main rebar ■ Type FJ: For conventional band rebar overlapping joints *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware

Our company offers the "GT Method," which has expanded the variety of non-welded fittings to meet various needs. The non-welded fitting "GT Hook" maintains precise shapes and can accommodate sizes from D10 to D51 by combining anti-loosening nuts and custom wire materials, tailored to the job site. Additionally, the "GT Hoop" is a high-strength, ring-shaped warp bar that excels in workability, and can be produced in larger diameters from D13 to D32 using an upset butt welding machine. 【Features】 - Compatible not only with FB but also with angles and C-shaped steel. - Quick and easy installation by using a single-sided hook and single-sided U-bolt fixation. - Reliability confirmed through strength testing conducted by specialized institutions. - Stable quality of band rebar can be achieved through upset butt welding. - On-site construction is possible, further enhancing workability. *For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method

This document explains how our completely weld-free construction method, the 'GT Method,' is enhancing its precision through collaboration with various research institutions. Not only have we presented papers at conferences in collaboration with the Osaka University Institute of Joining and Welding Chemistry regarding the development and evaluation of our pressure welding method, but the GT Method has also scientifically validated its strength through various demonstration tests. We have obtained patents for construction methods and materials, focusing on improving workability and safety. *For more details, please refer to the PDF document or feel free to contact us.*

• Special Construction Method

The "GT Hoop" is a high-strength circular hoop reinforcement that excels in workability. The product maintains a perfect circular shape and eliminates the need for hooks or overlapping joints, allowing for material cost reduction. The welded sections have a strength greater than that of the base material, and since it is integrated as a band reinforcement, the band itself has strength. The welding machine can also be brought to the site. 【Features】 ■ No on-site processing required, so no skilled workers are needed ■ Excellent workability ■ Significant reduction in material costs ■ Can produce large diameters from D13 to D32 *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware

The "GT Method" is a construction technique that involves the fabrication of rebar cages (assembled rebar) for site-constructed piles using non-welded hardware and factory-made hoop bars, all done completely without welding. This document includes images showing the process of manufacturing large-diameter double cages. Not only does the "GT Method" enable simultaneous assembly of double cages, but it also eliminates twisting and distortion. *For more details, please refer to the PDF document or feel free to contact us.*

• Special Construction Method

The "GT Hook TT Type" is a non-welded fitting for fixing main rebar and hoop rebar. In the GT method, fixing the main rebar and hoop rebar with No. 18 binding wire is sufficient; however, when rolling and moving rebar, the binding wire may break, so please use this as reinforcement. 【Design Strength kN/location (1/location)】 ■ Standards: Main rebar D13 to D51 × Tie rebar (hoop rebar) D13 to D32 ■ Tensile Strength: 70 (7) ■ Allowable Stress: 21 (2.1) ■ Safety Factor (F): F=3 *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware

The "GT Hook SJ Type" is a non-welded fitting for overlapping main bars. By bundling the overlapping parts of the main bars and the hoop bars, it eliminates displacement and enhances strength. Compared to conventional joint fittings, sufficient strength can be secured with half the number of pieces. 【Features】 ■ Bundles the overlapping parts of the main bars and the hoop bars to eliminate displacement and increase strength ■ Joins and secures main bars at the connection points of the iron cage ■ Used in two places for one main bar joint, skipping one bar *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware

The "GT Hook SF/FI Type" is a non-welded fitting for securing lattice bars. It securely fastens the main bars and hoop bars, and then fixes the hoop bars to the lattice bars. This method ensures that the strength is not affected by any misalignment between the main bars and the lattice bars, allowing for a more reliable fixation. By securing the lattice bars with high precision, the effectiveness in preventing deformation is enhanced. 【Features】 ■ Securely fastens the main bars and hoop bars, and then fixes the hoop bars to the lattice bars ■ Allows for a more reliable fixation without being affected by strength variations ■ Uses SF at approximately four points on the main bars and hoop bars ■ Uses FI at approximately four points on the hoop bars and lattice bars *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware

The "GT Hook FJ Type" is a fitting designed to prevent the welding detachment and misalignment of conventional hoop bars. It fixes only the overlapping part of the hoop bar joint, but by securing it together with the main bars, it ensures greater strength. 【Features】 ■ Fixes the overlapping part of the conventional hoop bars together with the main bars ■ Prevents welding detachment and misalignment ■ Uses two units per conventional hoop bar joint *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware

The "GT Hook BW Type" is a completely weld-free fixture for fixing main rebar and reinforcement frames (flat bars). By appropriately using the reinforcement frame (flat bar) and employing anti-twist reinforcement bars, it enhances the twisting strength of the rebar cage and prevents buckling and deformation. 【Features】 ■ Fixes anti-twist reinforcement bars ■ Fixes main rebar and reinforcement bars ■ Used in approximately 4 locations around the circumference ■ Enhances the twisting strength of the rebar cage and prevents buckling and deformation *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware

The "GT Hook Type B" is a completely weld-free fixture for fixing the main rebar and reinforcement frame (flat bar). In the GT method, it is recommended to use flat bars as needed instead of assembly rebar. It demonstrates sufficient strength without a double structure using assembly rebar on the inside. 【Features】 ■ External bolt tightening ■ Fixture for fixing main rebar and reinforcement frame ■ Used for the part where bolt tightening work is done from the outside of the cylinder ■ Used around the reinforcement frame and on all main rebar except BW *For more details, please refer to the PDF materials or feel free to contact us.

• Expansion joint hardware

The "GT Hook Type A" is a completely weld-free fitting for fixing the main rebar and reinforcement frame (flat bar). In the GT method, it is recommended to use flat bars as appropriate instead of assembly rebar. It demonstrates sufficient strength without a double structure using assembly rebar on the inside. 【Features】 ■ Bolt tightening ■ Fitting for fixing the main rebar and reinforcement frame ■ Used on the lower side of the cylinder where tools are difficult to access ■ Used around the reinforcement frame and on all main rebar except BW *For more details, please refer to the PDF materials or feel free to contact us.

• Expansion joint hardware

The "GT Spacer" is a fitting that improves work efficiency by welding the spacer body and the washer together. It can be used by securing it to the main rebar with a U-bolt. 【Features】 ■ Spacer body and washer are welded together ■ Fixed to the main rebar using a U-bolt ■ Used by rotating 45° for each of the four positions in one layer *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware

"GT Hoop" is a high-strength, circular hoop rebar that excels in workability. It is bent and welded at the factory before being delivered to the site, eliminating the need for traditional bending and flare welding. This shortens construction time and removes the need for skilled workers or welding licenses. Equipment can be moved to the site, allowing for on-site construction as well. Additionally, since there are no joint sections in the hoop rebar, material costs can be significantly reduced. 【Features】 ■ Product with Building Technology Performance Certification ■ No on-site processing required, so skilled workers are not needed (can accommodate on-site fabrication) ■ Excellent workability ■ Strength has been verified ■ Improved concrete fillability * You can download the Building Technology Performance Certification. * For more details, please refer to the PDF materials or feel free to contact us.

• Expansion joint hardware

The "GT Hook" is a completely weld-free fitting that can improve work efficiency. By using this product, it is possible to connect all rebar and reinforcement frames without rigidly welding them together. The combination of flange-equipped lock nuts and custom wire ensures that there is no loosening, maintaining an accurate shape. 【Features】 ■ Joins rebar without welding ■ Prevents twisting and deformation ■ Maintains accurate shape ■ Allows for the production of fittings suitable for the job site ■ Can be assembled without skilled workers *For more details, please refer to the PDF document or feel free to contact us.

• Expansion joint hardware