Overview
The Tunnel Steel Grouting Pipe 127*6 is a critical component in modern tunnel engineering, designed to facilitate high-pressure grouting and reinforce tunnel structures. Its standardized dimensions (127mm outer diameter, 6mm wall thickness) ensure compatibility with most tunneling projects. This pipe is typically manufactured from high-quality steel, offering excellent tensile strength and resistance to environmental stressors. Engineers favor this product for its reliability in distributing grout evenly across tunnel walls, which helps stabilize loose soil or rock formations. Its perforated design allows controlled grout flow, ensuring optimal ground consolidation. The pipe’s durability makes it suitable for long-term infrastructure projects, including subways, hydroelectric tunnels, and mining operations.
Structure and Working Principle
The pipe features a seamless or welded steel construction with strategically placed perforations (or 'grout holes') along its length. These holes enable the injection of cementitious or chemical grout into surrounding strata, filling voids and bonding loose particles. The 6mm wall thickness balances strength and weight, accommodating high injection pressures without deformation. During installation, the pipe is drilled into the tunnel lining or surrounding rock. Grout is pumped through the pipe’s hollow core, exiting via the perforations to permeate the ground. This process creates a reinforced 'umbrella' effect, mitigating water ingress and soil displacement. The pipe’s joints are often threaded or coupled to ensure continuity in longer sections.
Key Features
Corrosion resistance is a standout feature, often enhanced by galvanization or epoxy coatings to prolong service life in humid or chemically aggressive environments. The pipe’s high yield strength (typically 355MPa or higher) ensures it withstands ground movement and grouting pressures. Precision perforations are another critical attribute, with hole patterns engineered to optimize grout dispersion. Some variants include internal filters to prevent clogging. The pipe’s dimensional accuracy (±1mm tolerance) guarantees seamless integration with grouting equipment and adjacent tunnel supports.
Application Areas
This grouting pipe is indispensable in urban subway construction, where it stabilizes soft soils beneath cityscapes. It’s equally vital in mountain tunneling, reinforcing fractured rock masses to prevent collapses. Mining operations use it for shaft lining and roof bolting. Beyond tunnels, the pipe serves in slope stabilization projects and dam foundations. Its adaptability extends to temporary ground freezing applications, where it circulates coolant. In earthquake-prone regions, it’s deployed for liquefaction mitigation, solidifying loose granular soils.
Maintenance and Precautions
Routine inspections should check for perforation blockages, especially after grouting. High-pressure water jets can clear obstructions. Corrosion monitoring is essential in saline or acidic environments; sacrificial anodes may supplement coatings. During installation, avoid sharp bends exceeding the manufacturer’s radius guidelines (commonly 30x pipe diameter). Misalignment can cause uneven grout distribution or pipe rupture. Always use compatible grout mixtures—chemical incompatibility with pipe coatings can lead to premature degradation.
B2B Procurement Guide
Procure from manufacturers with ISO 9001 certification and proven tunnel project experience. Request mill test reports (MTRs) validating steel grade and coating thickness. For large orders, factory audits ensure production consistency. Logistics planning is crucial due to the pipe’s length; some suppliers offer custom cutting to reduce transport costs. Consider modular designs with quick-connect fittings to minimize on-site labor. Bulk pricing typically applies for orders exceeding 1,000 meters, with discounts of 10–15%.
Related Manufacturers
- 主营：钢管桩、打井桥式管、基坑透水管、钢花管、桥式滤水管、打孔注浆管、井口护壁钢管
- 主营：矩形管、钢结构、家具管、焊接管、缝焊管、直缝管、铝镁板、螺纹钢、重轨带、钢支撑、工字钢、预埋件、国槽钢、架子管、钢围檩、冷镀锌、无缝管、流水管、法兰盘、镀锌管、彩钢瓦、镀锌板、螺旋管、q235bq345b、管件三通
- 主营：小导管、棚套管、无缝管、钢花管、隧道地质管、注浆管、管棚管、声测管、注浆跟管、管棚根管、地质套管、跟管管靴、锚杆钢管、地质跟管、注浆套管、无缝钢管、钢花钢管、倒刺钢锚管、公母丝钢管、车内丝跟管、桥式滤水管、边坡支护管、注浆用钢管、地质钻探套管、地铁降水井管
- 主营：声测管、镀锌钢管、不锈钢管、焊管、钢花管、方管、工字钢、钢模板、球墨铸铁管、无缝钢管、h型钢、镀锌方管、镀锌角钢、角铁、槽钢、钢板、彩钢瓦、镀锌板、钢管、板材、花纹板、不锈钢无缝管、钢材、防腐无缝钢管、新兴铸管
- 主营：钢花管
- 主营：声纳管、声测管、螺旋套筒、钢花管、一次性焊管、十字桩尖、检测钢管、注浆锚杆、管业桩尖、液压螺旋、螺旋钢管、止水钢板、塑料袖阀管、桩基检测管、混凝土导管、金属波纹管、50抽芯注浆管、预应力钢绞线、大口径灌注桩、铁丝网格网片、超声波检测管、打桩开口预埋件、预应力抗浮锚杆、预埋无缝管棚管
- 主营：金属材料、金属制品、加工定制、直缝焊桥式滤水管、现货销售
- 主营：桥式滤水管、滤水管、井壁管、钢花管、隧道无缝钢管、钢花管土钉、降水井管、扬水管、岩心管、管棚管、钢管加工、跟进套管、超前小导管、方矩管、无缝方管、超前大管棚
- 主营：声测管、注浆管、桩尖、钢花管、钢筋网片、钢绞线
- 主营：声测管、注浆管、钢筋网片、钢花管、钢绞线
- 主营：声测管、注浆管、小导管、50mm声测管、桩基声测管、桥梁声测管、螺旋式声测管、套筒式声测管、钳压式声测管
- 主营：脚手架、防腐管、铁方管、直缝焊管、焊接钢管、保温弯头、复合钢管、防腐弯头、镀锌钢管、空心方管、保温钢管、涂塑钢管、四氟管道、防腐钢管、螺旋钢管、无缝钢管、流体专用管、热镀锌方管、热力管道三通、保温螺旋管道、热力保温管道、内环氧粉末钢管、不锈钢钢板卷管
- 主营：注浆钢花管、桩基钢花管、带肋焊接网、界面抽芯管、超声波检测管、桩基灌注声测管
- 主营：管棚管、滤水管、跟进套管、隧道钢花管、无缝钢花管、钻探套管、注浆管、无缝管棚管、超前小导管、注浆钢管、地质管、套管、管靴、根管、跟管、地质套管、岩心管、锚索跟管、注浆管棚管
- 主营：钢管、桥式滤水管、螺旋钢管、直缝焊管、球墨铸铁管、井管、无砂管
- 主营：注浆管、超前小导管、跟管、钢花管、管棚管、地质管