A seismic-resistant pipeline system that achieves full self-anchoring through a patented flexible joint design, combining the strength of steel pipes with the seismic adaptability of a flexible joint.
⭐ Product Overview
The self-anchoring flexible joint steel pipe, stainless steel pipe, and stainless-steel-lined composite pipe are engineered for underground installation, above-ground utility corridors, trenchless jacking and pulling construction, and long-distance transmission of potable water—eliminating secondary contamination risks.
International Certification
Complies with ISO 16134 – Seismic Design and Subsidence Control for Ductile Iron Pipelines
Seismic performance exceeds Japanese and American seismic pipeline systems
Successfully tested under Seismic Intensity 8 (0.5g horizontal acceleration)
Core Innovations
A patented single locking ring replaces traditional concrete thrust blocks
Achieves dual-direction self-anchoring:
Axial pull-out resistance
Lateral angular deviation resistance
Joint displacement can be stacked, allowing adaptation to severe ground deformation
Axial displacement: 10 mm per joint
Angular deviation: 1° per joint
1. Ultra-Fast Installation — 600% Faster
Assembly-based construction: only a tensioning tool + locking ring
DN1000 pipe installation: 15 minutes (vs. 90 minutes for welding)
No welding, no thrust blocks — saves concrete, welding equipment, labor
Suitable for narrow spaces and trenchless methods (jacking / pulling / HDD)
2. Superior Seismic Performance
Handles ground fault movement, settlement, seismic waves, and terrain deformation
Tested performance:
≥ 1.5× the pipe’s pressure rating in axial pull-out strength
Withstands 0.5g horizontal acceleration (equivalent to Seismic Intensity 8)
3. Jacking + Pulling Dual Application — Overcomes Terrain Limits
Dynamic pipe adjustment during installation: adjustable length & curvature
Solves industry limitations:
Traditional jacking pipes cannot avoid obstacles → this system allows flexible bending
Ductile iron curvature is limited → this system adapts to large curvature variation
4. 10% Cost Reduction
0 welding → no welders, generators, or X-ray inspection
0 heavy machinery → no sheet piles or large dewatering equipment
Lower labor requirements — even non-skilled workers can operate
5. Zero-Leakage Assurance
Stress-relief system absorbs:
Surge pressure
Thermal expansion & contraction
Ground movement
Dual anti-pull-out system:
Axial: mechanical locking ring
Radial: flexible joint for angular movement
Industry record: 0 burst / 0 leakage incidents
6. Green, Low-Impact Construction
“Three-Without Installation”: no open flame / no radiation / no anti-corrosion pollution
60% reduction in construction emissions vs. traditional welding
80% shorter working time inside shafts → 90% lower collapse risk
⭐ Application Scenarios
Lifeline Systems
Municipal water supply and gas trunk lines in seismic zones
Energy Infrastructure
Oilfields, nuclear power emergency pipelines
Challenging Geology
Active fault zones
Mining subsidence areas
Cross-sea bridge auxiliary pipelines
⭐ Technical Parameters
Material Options:
Carbon steel, 304 / 316L stainless steel, NM400 wear-resistant steel
Pressure Rating: PN10 – PN25 (custom options available)
Diameter Range: DN200 – DN2000
Connection Type: Patented self-anchoring flexible joint
⭐ Application Fields
Municipal water transmission
Underground utility tunnel systems
Trenchless municipal pipeline installation
Fire protection water supply systems
Long-distance potable water transmission
Pipeline rehabilitation & seismic lifeline projects
Application field
Guangdong Meizhou Cluster Water Supply Project
Meizhou River Intake Engineering Project
Nominal Diameter DN (mm) | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 |
Allowable Axial Displacement of Joint (mm) | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 |
Allowable Angular Deflection of Joint | 2° | 2° | 2° | 2° | 2° | 2° | 2° | 2° | 1°30’ | 1°30’ | 1°30’ | 1°15’ |
Tensile Pull-Out Resistance (kN) | 11 | 20 | 35 | 50 | 70 | 96 | 125 | 160 | 195 | 280 | 385 | 500 |
Bending Moment Resistance (kN m) | 1.4 | 2.5 | 4.0 | 5.9 | 13 | 17 | 21 | 25 | 33 | 37 | 55 | 75 |
Nominal Diameter DN (mm) | 900 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 | 2200 | 2400 | 2600 | 2800 | 3000 |
Allowable Axial Displacement of Joint (mm) | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 | ≥10 |
Allowable Angular Deflection of Joint | 1°15’ | 1°15’ | 1°15’ | 1°15’ | 1°15’ | 1°15’ | 1°15’ | 1° | 1° | 1° | 1° | 1° |
Tensile Pull-Out Resistance (kN) | 650 | 780 | 1130 | 1530 | 2010 | 2540 | 3150 | 3800 | 4520 | 5300 | 6150 | 7000 |
Bending Moment Resistance (kN m) | 123 | 140 | 206 | 266 | 355 | 445 | 547 | 650 | 783 | 920 | 1060 | 1220 |
Note: For pipelines using fully self-anchoring joints, thrust blocks may be omitted at locations where the pipeline changes direction or climbs in elevation. For above-ground installations or utility corridor layouts, the axial position of self-anchoring joint fittings should be determined based on the pipeline’s position under the acceptance test water pressure. | ||||||||||||
全自锚不锈钢管的外径和壁厚
公称尺寸 DN | 基管外径 D | 承口外径 D1 | 插口凸台外径 D2 | 壁厚 t |
100 | 108+0.5 0 | 140 | 131-0.5 0 | 1.0 |
150 | 159+0.5 0 | 192 | 182-0.5 0 | 1.2 |
200 | 219+0.5 0 | 257 | 235-0.5 0 | 1.5 |
250 | 273+0.5 0 | 312 | 287-0.5 0 | 1.8 |
300 | 325+0.5 0 | 358 | 342-0.5 0 | 2.0 |
350 | 377+0.5 0 | 418 | 400+0.5 0 | 2.0 |
400 | 426+0.5 0 | 468 | 449-0.5 0 | 2.0 |
450 | 478-0.5 0 | 525 | 505-0.5 0 | 2.0 |
500 | 530+0.5 0 | 577 | 557-0.5 0 | 2.0 |
600 | 630+0.5 0 | 684 | 662-0.5 0 | 2.0 |
700 | 720-0.8 0 | 772 | 753-0.8 0 | 3.0 |
800 | 820+0.8 0 | 883 | 856-0.8 0 | 3.0 |
900 | 920+0.8 0 | 986 | 956+0.8 0 | 4.0 |
1000 | 1020+0.8 0 | 1090 | 1060-0.8 0 | 4.0 |
1200 | 1220+0.8 0 | 1290 | 1261-0.8 0 | 5.0 |
1400 | 1420+0.8 0 | 1499 | 1466-0.8 0 | 6.0 |
1600 | 1620+0.8 0 | 1682 | 1664-0.8 0 | 7.0 |
1800 | 1820+0.8 0 | 1913 | 1864-0.8 0 | 8.0 |
2000 | 2020+0.8 0 | 2115 | 2074-0.8 0 | 9.0 |
2200 | 2220+1.0 0 | 2336 | 2278-1.0 0 | 10 |
2400 | 2420+1.0 0 | 2536 | 2482-1.0 0 | 11 |
2600 | 2620+1.0 0 | 2743 | 2686-1.0 0 | 12 |
2800 | 2820+1.0 0 | 2950 | 2889-1.0 0 | 13 |
3000 | 3020+1.0 0 | 3163 | 3095-1.0 0 | 14 |
00001注： 壁厚t＜5.0 mm时，允许偏差为+0.5 -0.3mm；壁厚t≥5.0 mm时，允许偏差为+10.0%t -4.0%t。 | ||||
全自锚不锈钢管的接口性能
序号 | 项目 | 试验参数 | 要求 |
1 | 正内压试验 | 对接口施加剪切合力值应不小于100倍的公称直径DN； 对接口密封型式试验压力应不小于1.5倍工作压力+0.5MPa。 | 无渗漏 无损坏 |
2 | 负内压试验 | 真空状态，持续时间2h | |
3 | 循环内压试验 | 循环1500次 | |
4 | 接口横向、竖向曲挠振动位移试验 | 振动频率≥1.0Hz，振动位移幅度±45mm | |
5 | 接口引拔和抗拉拔性能试验 | 试验压力≥1.0MPa，持续时间3min； 接口位移量≥10mm。 | |
6 | 接口抗弯曲力矩性能试验 | 试验压力1.0MPa，持续时间3min | |
00001注： DN1400以上规格的管材不需进行接口横向、竖向曲挠振动位移试验。 | |||
管材尺寸分组 单位：mm
组别 | 公称尺寸DN |
1 | 100≤DN＜1200 |
2 | 14000≤DN＜2000 |
3 | DN≥2000 |
全自锚不锈钢管允许堆放层数
公称尺寸 mm | 堆放层数 ≤ |
DN＜300 | 8 |
300≤DN＜400 | 6 |
500≤DN＜600 | 5 |
700≤DN＜800 | 4 |
900≤DN＜1200 | 3 |
1400≤DN＜2000 | 2 |
≥DN2200 | 1 |
公称尺寸DN | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 |
基管外径D | 108 | 159 | 219 | 273 | 325 | 377 | 426 | 478 | 530 | 630 | 720 | 820 |
管壁厚t | 1.0 | 1.2 | 1.5 | 1.8 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 3.0 | 3.0 |
卡环直径φ | 10 | 10 | 12 | 12 | 12 | 12 | 12 | 12 | 14 | 14 | 14 | 16 |
承口外径D1 | 140 | 192 | 257 | 312 | 358 | 418 | 468 | 525 | 577 | 684 | 772 | 883 |
插口凸台外径D2 | 131 | 182 | 235 | 287 | 342 | 400 | 449 | 505 | 557 | 662 | 753 | 856 |
承插口配合间隙h | 0.45±0.20 | 0.45±0.20 | 0.45±0.20 | 0.45±0.20 | 0.45±0.25 | 0.60±0.25 | 0.60±0.25 | 0.75±0.25 | 0.75±0.25 | 0.90±0.25 | 1.20±0.25 | 1.20±0.25 |
插入深度L | 100 | 108 | 110 | 110 | 120 | 135 | 135 | 140 | 145 | 155 | 160 | 185 |
密封腔设计间隙H | 7± 0.20 | 7± 0.20 | 7± 0.20 | 7± 0.20 | 7± 0.20 | 8.5±0.25 | 8.5±0.25 | 8.5±0.25 | 8.5±0.25 | 8.5±0.25 | 8.5±0.25 | 10±0.25 |
密封胶圈厚度H1 | 12 | 12 | 12 | 12 | 12 | 12 | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 17 |
加强环宽度l | 0 | 0 | 0 | 50 | 50 | 50 | 60 | 60 | 65 | 70 | 80 | 80 |
加强环厚度B | 0 | 0 | 0 | 1.8 | 2.0 | 2.0 | 2.0 | 4.0 | 4.0 | 6.0 | 8.0 | 8.0 |
公称尺寸DN | 900 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 | 2200 | 2400 | 2600 | 2800 | 3000 |
基管外径D | 920 | 1020 | 1220 | 1420 | 1620 | 1820 | 2020 | 2220 | 2420 | 2620 | 2820 | 3020 |
管壁厚t | 4.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.0 | 10 | 11 | 12 | 13 | 14 |
卡环直径φ | 16 | 18 | 18 | 18/20 | 18/20 | 20/22 | 22/24 | 24/26 | 26/28 | 28/30 | 30/32 | 32/35 |
承口外径D1 | 986 | 1090 | 1290 | 1499 | 1682 | 1913 | 2115 | 2336 | 2536 | 2743 | 2950 | 3163 |
插口凸台外径D2 | 956 | 1060 | 1261 | 1466 | 1664 | 1864 | 2074 | 2278 | 2482 | 2686 | 2889 | 3095 |
承插口配合间隙h | 1.30±0.25 | 1.30±0.25 | 1.30±0.25 | 1.75±0.25 | 1.75±0.25 | 2.00±0.25 | 2.00±0.40 | 2.00±0.40 | 2.20±0.50 | 2.40±0.50 | 2.50±0.60 | 2.50±0.60 |
插入深度L | 190 | 200 | 208 | 230 | 235 | 260 | 270 | 300 | 320 | 350 | 390 | 430 |
密封腔设计间隙H | 10±0.25 | 10±0.25 | 10±0.25 | 13±0.25 | 13±0.25 | 15±0.25 | 15±0.25 | 15±0.25 | 17±0.25 | 20±0.25 | 22±0.25 | 24±0.25 |
密封胶圈厚度H1 | 17 | 17 | 17 | 22 | 22 | 25.5 | 25.5 | 25.5 | 28.5 | 33 | 37 | 40 |
加强环宽度l | 80 | 80 | 90 | 110 | 110 | 120 | 120 | 140 | 140 | 150 | 150 | 160 |
加强环厚度B | 10 | 12 | 15 | 18 | 24 | 28 | 35 | 35 | 42 | 46 | 55 | 58 |
注1：全自锚不锈钢管配合尺寸和壁厚，应满足接口型式试验和承插制造工艺的需求。 注2：全自锚不锈钢管当工作压力大于1.6MPa时，订货时应注明。 | ||||||||||||
全自锚柔性接口拖拉钢管应用曲率半径
管子长度（m） | 2 | 4 | 6 | 8 | ||||
接口角度（°） | 0.8 | 1.2 | 0.8 | 1.2 | 0.8 | 1.2 | 0.8 | 1.2 |
曲率半径（m） | 145 | 100 | 290 | 195 | 430 | 290 | 580 | 390 |
注：每根管子长度供需方可另定 | ||||||||
