Basic Product Introduction
High-tensile Tie Bolt, also widely known as formwork tie rod, wall tie bolt and concrete tie screw in the construction industry, is the core load-bearing fastener of concrete wall formwork systems. It is used to connect inner and outer formworks, resist lateral water pressure generated during concrete pouring, fix formwork spacing and guarantee flat wall surface without deformation. It is always matched with scaffolding, aluminum formwork and steel formwork, being an irreplaceable basic construction accessory for residential buildings, bridges, underground pipe galleries and overseas infrastructure projects.
A standard complete set consists of full-thread high tensile screw, water-stopping/common wing nut, hex nut, gasket and water stop cone. We supply single tie bolts separately or full matched accessories in one package to satisfy one-stop procurement demands from construction sites.
Core Product Advantages
Ultra-high tensile strength for doubled construction safety factor
We adopt 40Cr alloy structural steel as raw material with complete quenching and tempering heat treatment to produce stable Grade 8.8 & Grade 10.9 specifications. The tensile strength ranges from 800MPa to 1000MPa, with bearing capacity over 60% higher than ordinary Grade 4.8 screws of the same diameter. It effectively avoids screw breakage and thread slipping during pouring of high-rise and large-span walls, eliminating safety hazards of formwork bursting.
Precision thread rolling process for smooth disassembly and repeated reuse
Threads are integrally formed by automatic digital thread rolling machines with uniform pitch and burr-free surface. The tight fit with matched nuts prevents thread sliding after repeated disassembly. Non-water-stopping tie bolts can be recycled many times without thread damage after removal, greatly cutting single consumable procurement costs for construction projects.
Multiple anti-corrosion coatings suitable for construction sites worldwide with different climates
Three surface treatment options are available: electro-galvanized (blue white zinc / color zinc), hot-dip galvanized and Dacromet blackening. Hot-dip galvanized layers deliver superior corrosion resistance for coastal high salt fog and rainy humid construction sites in Southeast Asia; electro-galvanized products offer cost performance for inland dry residential construction projects with stable anti-rust performance under long-term outdoor exposure.
Flexible customization from source factory with low procurement thresholds
We own complete forging, heat treatment and galvanizing production lines. Custom diameters (M10-M24) and lengths (300mm-6000mm) from D12/D15/D17/D20 standard sizes are acceptable. Custom thread types and special coatings per customer drawings are supported. Small sample orders and ten-thousand-ton annual framework orders are both welcome with flexible MOQ without mandatory
bulk stocking requirements.
Complete international certifications for hassle-free export customs clearance
Material test MTC reports and mechanical strength test certificates are attached to every shipment. We hold ISO9001 quality management system certification, EU CE construction product certification and ASTM US standard inspection qualifications, fully complying with customs clearance standards of Europe, America, Southeast Asia, Middle East and other regions without export document obstacles.
Stable delivery & dedicated foreign trade after-sales service
Thousands of tons of standard-size tie bolts are in stock for shipment within 7 days after order confirmation; customized orders are delivered stably within 10-15 days. Our professional foreign trade technical team provides English specification sheets, installation drawing guides and technical support for project selection. Long-term bulk partners enjoy tiered factory prices and exclusive warranty service.
Detailed Specification Data Sheet
| Item | Standard Parameter | Customizable Range |
| Product Model | High-tensile Tie Bolt | Grade 8.8 / Grade 10.9 optional |
| Raw Material | 40Cr Alloy Steel / 45# Medium Carbon Steel | 35CrMo high load-bearing alloy steel for customization |
| Screw Diameter | 12mm, 15mm, 17mm, 20mm | Non-standard diameters M10-M24 |
| Screw Length | 500/800/1000/1500/2000mm | Arbitrary cutting from 300mm to 6000mm |
| Thread Process | Automatic precision full thread rolling | Half thread & special imperial thread customization |
| Anti-corrosion Surface Treatment | Color electro-galvanized / white electro-galvanized | Hot-dip galvanizing, Dacromet, black phosphating |
| Matching Accessories | Wing nuts, hex nuts, gaskets, water stop cones | 3-piece water-stopping assembly, full formwork support accessories |
| Mechanical Performance | Grade 8.8 ≥800MPa tensile strength; Grade 10.9 ≥1000MPa tensile strength | Third-party inspection reports provided with each batch |
| Execution Standards | GB/T3098, ISO4017 | Custom production complying with DIN, ASTM A325, EN international standards |
| Packaging | 25kg woven bag / carton with pallet | Custom export moisture-proof wooden cases |
| Minimum Order Quantity | Stock items: 500kg; Custom items: 1 ton | 10kg small sample orders supported |
| Lead Time | Stock: 7 days; Custom: 10-15 days | Rush order production arrangement available in peak seasons |
Application Scenarios
1.Civil Residential Construction: High-rise apartments, commercial complexes and villa shear wall formwork reinforcement
2.Overseas Infrastructure Projects: General contractor construction sites & wholesale building material stores across Europe, America, Middle East and Southeast Asia
3.Special Construction Works: Underground pipe galleries, metro walls, reservoirs and sewage treatment plant waterproof walls (matched with water-stopping tie bolt assemblies)
4.Formwork System Matching: Universal tie accessories for aluminum formwork, steel formwork, plastic formwork and traditional wooden formwork
5.Scaffolding Supporting Works: External wall scaffolding wall anchoring and temporary steel structure bracing reinforcement
Product Selection
Core Selection Reference Standards
Low-rise buildings within 3 floors & inland dry construction sites: Grade 8.8 electro-galvanized high-tensile tie bolts with optimal cost performance are recommended.
High-rise buildings over 10 floors, large-span shear walls and coastal salt fog areas: Prioritize Grade 10.9 hot-dip galvanized models for dual guarantee of bearing capacity and anti-corrosion performance.
Waterproof walls such as underground basements and reservoirs: Adopt 3-piece water-stopping high-tensile tie bolts equipped with water stop cones and gaskets to prevent wall water seepage.
Customer FAQ
01.What is the core difference between High-tensile Tie Bolt and ordinary wall tie screws?
02.Do you provide free samples?
03.What customs clearance documents can you provide for export?
04.Can your tie bolts match my existing formwork accessories?
05.Are there volume discounts for long-term bulk procurement?
Inquiry & Conversion Module
If you need complete English specification sheets, project technical selection solutions and accurate bulk factory quotations for High-tensile Tie Bolt, please leave messages via page form or online customer service with your detailed requirements: target purchase quantity, required screw diameter & length, anti-corrosion coating standard and export destination country. Our professional foreign trade engineers will send full documents and optimal quotations within 24 hours. Factory video tour and third-party on-site inspection are both available. We sincerely invite global building material importers and general construction contractors to establish long-term in-depth cooperation.
