Overview
Through Wall Threaded Rod is a specialized construction fastener designed for formwork systems in concrete wall construction. These rods span the entire wall thickness, with threaded ends protruding on both sides to secure formwork panels. They serve as critical load-bearing components during the concrete pouring process, ensuring dimensional accuracy and structural integrity. Standard lengths typically range from 12 inches to 10 feet, with diameters varying between 12mm to 30mm to accommodate different wall thicknesses and load requirements. The rods are manufactured with precise threading (usually metric coarse thread) to guarantee consistent performance across construction applications.
Structure and Working Principle
The rod features continuous threading along its entire length, allowing for adjustable fixing points on both sides of the formwork. The central unthreaded portion often includes a plastic or PVC sleeve that creates the necessary void in the finished concrete wall, enabling rod removal after curing. During operation, the rod transfers lateral pressure from wet concrete to the external formwork supports. The threading provides mechanical interlock with formwork components, while the rod's tensile strength resists deformation under hydrostatic pressure. After concrete curing, the rod can be unscrewed for reuse, leaving only the protective sleeve embedded in the wall.
Key Features
High-strength steel construction ensures these rods can withstand concrete pressures exceeding 60 kPa without bending. The full-length threading provides versatile attachment options and allows for precise adjustment of formwork positioning. Anti-corrosion treatments (such as hot-dip galvanizing) are commonly applied to carbon steel versions for extended service life. Stainless steel variants (304 or 316 grade) offer superior corrosion resistance for marine environments or projects requiring high durability. Some designs incorporate break-off grooves or weakened sections to facilitate rod removal after concrete setting, reducing labor costs during formwork dismantling.
Application Areas
These rods are essential in cast-in-place concrete construction for walls, columns, and other vertical elements. They're particularly valuable in high-rise buildings, bridge piers, and water treatment plants where precise wall thickness control is critical. The system works with various formwork types including steel, aluminum, and phenolic plywood panels. Special applications include use in jump form systems for rapid vertical construction and in tunnel lining where consistent wall profiles are required. The rods are also employed in temporary earth retention systems and as tiebacks for excavation support walls.
Maintenance and Precautions
Proper cleaning after each use extends service life significantly. Remove all concrete residue using wire brushes or specialized cleaning tools before storage. Lubricate threads periodically with light oil to prevent seizing, especially when used in damp conditions. Always inspect rods for thread damage or bending before reuse. Bent rods should be discarded as they compromise formwork alignment. For waterproof structures, ensure proper installation of sealing washers or cones to prevent water infiltration through rod holes. Follow torque specifications during installation to avoid thread stripping.
B2B Procurement Guide
When sourcing through wall threaded rods, specify material grade (carbon steel Q235 or stainless steel 304/316), diameter, length, and threading specifications. Bulk purchases typically offer 15-30% cost savings compared to small quantities. Lead times vary from 1-4 weeks depending on customization requirements. Quality certifications to verify include ISO 1461 for galvanizing or ASTM A193 for stainless steel. Consider suppliers offering complete systems with matching nuts, washers, and cones for streamlined procurement. For large projects, request sample batches to test compatibility with existing formwork before full-scale ordering.
Related Manufacturers
- 主营：[]
- 主营：止水螺栓、楼梯护角、钢筋马镫、止水螺杆、止水钢板、钢筋套筒定制、穿墙螺栓定制
- 主营：标养室、拉缝板、水泥条、地下室防水螺杆、集装箱、分格板、结构板、养护室、墙体结构、桥梁垫块、梅花垫块、桩芯圆饼、水泥垫块、桩芯铁饼、桩芯钢板、建筑施工、水泥支撑条、pvc建筑拉缝、钢筋保护层、混凝土条支撑、建筑工地桩芯、水泥支撑垫块、框条填充制品、填充条、移动标养室、可移动标养室
- 主营：保护网、井盖网、外架网、止水螺杆、脚手架、爬架网、防坠网、密目网、防护网、防尘网、安全网、冲孔板、钢支撑、铝膜板、支撑架、安全平网、防护爬架、防护兜网、防尘绿网、安全立网、防护绿网、可调斜拉杆、菱形钢笆网、防护外挂网、施工遮阳网、密目阻燃网
- 主营：止水钢板、镀锌止水板、不锈钢止水钢板、穿墙螺杆、橡胶止水带
- 主营：顶丝、直螺纹套筒、对拉丝、止水螺杆、钢笆网片、止水带、止水钢板、方柱扣、步步紧、脱模剂、钢跳板、扣件、铁马凳、爬架网、梁夹具、卡管器、安全防护网、防尘网、铝模套管、模板堵头、钢筋保护帽
- 主营：穿墙螺栓、对拉丝杆、顶托、止水螺杆、止水钢板、钢筋套筒、扣件、顶丝、钢笆网片、方柱扣、钢筋网片、工字钢悬挑脚手架、止水带、步步紧、脱模剂、梁夹具、卡管器、塑料垫块、马凳、锥形套管、安全防护网、卸料平台
- 主营：止水钢板、止水铜片、楼梯护角、止水螺杆、橡胶止水带、紫铜止水片、不锈钢止水钢板、钢筋网片、沥青纤维板、膨胀止水带、镀锌止水钢板、遇水膨胀止水条、聚乙烯闭孔泡沫板、道路密封胶、填补灌封胶、沥青冷补料、聚氨酯密封胶、楼梯保护垫、预制楼梯防护垫、沥青木屑板、沥青木板、建筑网片、沥青油膏、U型卡、聚硫密封胶
- 主营：方柱扣、防尘网、警示带、止水螺杆、铁马凳、u型螺栓、建筑丝杠、安全平网、钢板橡胶、雨水篦子、钢筋马凳、u型丝螺栓、楼梯护角筋、防护防坠网、脚手架配件、免拆收口网、阻燃密目网、卡箍梁夹具、穿墙丝螺栓、道路减速带、水泥收口网、铸铁雨水井盖、镀锌预埋建筑、楼层镀锌铁皮、浇筑模板夹具
- 主营：止水钢板、空心顶丝、橡胶止水带、止水螺杆、楼梯护角、聚乙烯闭孔泡沫板、聚硫密封胶、丁基防水胶带、钢筋网片、止水鱼鳞网、止水铜片、紫铜止水片、不锈钢止水钢板、钢筋套筒、沥青纤维板、镀锌止水钢板、遇水膨胀止水条、道路密封胶、填补灌封胶、沥青冷补料、聚氨酯密封胶、楼梯保护垫、沥青油膏、沥青木屑板、沥青木板
- 主营：止水钢板、橡胶止水带、丁基防水胶带、止水螺杆、止水环、空心顶丝、钢筋网片、聚乙烯泡沫板、注浆管、U型丝、止水鱼鳞网、钢筋马凳、道路密封胶、沥青纤维板、沥青木屑板、楼梯保护垫、聚氨酯密封胶、沥青冷补料、沥青油膏、紫铜止水片、止水铜片、楼梯护角、不锈钢止水钢板、沥青木板、遇水膨胀止水条
- 主营：六角法兰螺母
- 主营：止水螺杆、穿墙螺杆、新型悬挑架、止水钢板、钢筋套筒
- 主营：楼梯护角、止水钢板、钢筋护角筋、止水螺杆、止水铜片、橡胶止水带、紫铜止水片、不锈钢止水钢板、钢筋网片、沥青纤维板、膨胀止水带、镀锌止水钢板、遇水膨胀止水条、聚乙烯闭孔泡沫板、道路密封胶、沥青冷补料、聚氨酯密封胶、楼梯保护垫、预制楼梯防护垫、沥青木屑板、沥青木板、建筑网片、沥青油膏、U型卡、聚硫密封胶
- 主营：止水钢板、止水铜片、铜止水片、止水螺杆、通丝螺杆、三段式止水螺杆、橡胶止水带、镀锌钢板、楼梯护角、止水鱼鳞网、钢筋网片、空心顶丝、不锈钢止水板、建筑网片、闭孔泡沫板、遇水膨胀、聚乙烯闭孔泡沫板、沥青纤维板、道路密封胶、沥青冷补料、聚氨酯密封胶、楼梯保护垫、沥青木板、沥青油膏、路面灌缝胶
- 主营：卡管器、试压模、雾炮机、止水螺杆、单头丝螺杆、pvc线管、悬挑工、步步紧、蝴蝶扣、上下铁床、建筑材料、折叠马凳、建筑器材、扣件螺丝、扣件种类、地脚螺栓、止水钢板、抗渗试模、施工材料、双层铁床、空心顶托、钢筋马凳、橡胶止水带、建筑模板扣、防水止水带