Pipe Repair Clamps
Straight Pipe Repair Clamp for DI Pipe
For repair of straight pipe sections on DI and grey cast iron pipes. DN50 to DN1600, various lengths.
Inquire NowSpecifications
How to read the model number： H100×500 = straight-pipe repair for a DN100 ductile iron pipe with a 500 mm clamp body length.
| Model | DN | NPS | OD (mm) OD (in) | Length (mm) Length (in) |
|---|---|---|---|---|
| H50×300 | DN50 | 2" | 66 mm 2.60" | 300 mm 11.8" |
| H65×300 | DN65 | 2½" | 82 mm 3.23" | 300 mm 11.8" |
| H80×200 | DN80 | 3" | 98 mm 3.86" | 200 mm 7.9" |
| H80×250 | DN80 | 3" | 98 mm 3.86" | 250 mm 9.8" |
| H80×300 | DN80 | 3" | 98 mm 3.86" | 300 mm 11.8" |
| H80×350 | DN80 | 3" | 98 mm 3.86" | 350 mm 13.8" |
| H80×500 | DN80 | 3" | 98 mm 3.86" | 500 mm 19.7" |
| H100×1000 | DN100 | 4" | 118 mm 4.65" | 1000 mm 39.4" |
| H100×200 | DN100 | 4" | 118 mm 4.65" | 200 mm 7.9" |
| H100×250 | DN100 | 4" | 118 mm 4.65" | 250 mm 9.8" |
| H100×300 | DN100 | 4" | 118 mm 4.65" | 300 mm 11.8" |
| H100×350 | DN100 | 4" | 118 mm 4.65" | 350 mm 13.8" |
| H100×500 | DN100 | 4" | 118 mm 4.65" | 500 mm 19.7" |
| H125×300 | DN125 | 5" | 144 mm 5.67" | 300 mm 11.8" |
| H150×1000 | DN150 | 6" | 170 mm 6.69" | 1000 mm 39.4" |
| H150×200 | DN150 | 6" | 170 mm 6.69" | 200 mm 7.9" |
| H150×250 | DN150 | 6" | 170 mm 6.69" | 250 mm 9.8" |
| H150×300 | DN150 | 6" | 170 mm 6.69" | 300 mm 11.8" |
| H150×350 | DN150 | 6" | 170 mm 6.69" | 350 mm 13.8" |
| H150×500 | DN150 | 6" | 170 mm 6.69" | 500 mm 19.7" |
| H200×1000 | DN200 | 8" | 222 mm 8.74" | 1000 mm 39.4" |
| H200×200 | DN200 | 8" | 222 mm 8.74" | 200 mm 7.9" |
| H200×250 | DN200 | 8" | 222 mm 8.74" | 250 mm 9.8" |
| H200×300 | DN200 | 8" | 222 mm 8.74" | 300 mm 11.8" |
| H200×350 | DN200 | 8" | 222 mm 8.74" | 350 mm 13.8" |
| H200×500 | DN200 | 8" | 222 mm 8.74" | 500 mm 19.7" |
| H250×1000 | DN250 | 10" | 274 mm 10.79" | 1000 mm 39.4" |
| H250×200 | DN250 | 10" | 274 mm 10.79" | 200 mm 7.9" |
| H250×250 | DN250 | 10" | 274 mm 10.79" | 250 mm 9.8" |
| H250×300 | DN250 | 10" | 274 mm 10.79" | 300 mm 11.8" |
| H250×350 | DN250 | 10" | 274 mm 10.79" | 350 mm 13.8" |
| H250×500 | DN250 | 10" | 274 mm 10.79" | 500 mm 19.7" |
| H300×1000 | DN300 | 12" | 326 mm 12.83" | 1000 mm 39.4" |
| H300×200 | DN300 | 12" | 326 mm 12.83" | 200 mm 7.9" |
| H300×250 | DN300 | 12" | 326 mm 12.83" | 250 mm 9.8" |
| H300×300 | DN300 | 12" | 326 mm 12.83" | 300 mm 11.8" |
| H300×350 | DN300 | 12" | 326 mm 12.83" | 350 mm 13.8" |
| H300×500 | DN300 | 12" | 326 mm 12.83" | 500 mm 19.7" |
| H350×1000 | DN350 | 14" | 378 mm 14.88" | 1000 mm 39.4" |
| H350×200 | DN350 | 14" | 378 mm 14.88" | 200 mm 7.9" |
| H350×500 | DN350 | 14" | 378 mm 14.88" | 500 mm 19.7" |
| H400×1000 | DN400 | 16" | 429 mm 16.89" | 1000 mm 39.4" |
| H400×200 | DN400 | 16" | 429 mm 16.89" | 200 mm 7.9" |
| H400×300 | DN400 | 16" | 429 mm 16.89" | 300 mm 11.8" |
| H400×500 | DN400 | 16" | 429 mm 16.89" | 500 mm 19.7" |
| H450×1000 | DN450 | 18" | 480 mm 18.90" | 1000 mm 39.4" |
| H450×500 | DN450 | 18" | 480 mm 18.90" | 500 mm 19.7" |
| H500×1000 | DN500 | 20" | 532 mm 20.94" | 1000 mm 39.4" |
| H500×300 | DN500 | 20" | 532 mm 20.94" | 300 mm 11.8" |
| H500×500 | DN500 | 20" | 532 mm 20.94" | 500 mm 19.7" |
| H600×1000 | DN600 | 24" | 635 mm 25.00" | 1000 mm 39.4" |
| H600×500 | DN600 | 24" | 635 mm 25.00" | 500 mm 19.7" |
| H700×1000 | DN700 | 28" | 738 mm 29.06" | 1000 mm 39.4" |
| H700×500 | DN700 | 28" | 738 mm 29.06" | 500 mm 19.7" |
| H800×1000 | DN800 | 32" | 842 mm 33.15" | 1000 mm 39.4" |
| H800×500 | DN800 | 32" | 842 mm 33.15" | 500 mm 19.7" |
| H900×1000 | DN900 | 36" | 945 mm 37.20" | 1000 mm 39.4" |
| H900×500 | DN900 | 36" | 945 mm 37.20" | 500 mm 19.7" |
| H1000×1000 | DN1000 | 40" | 1048 mm 41.26" | 1000 mm 39.4" |
| H1000×500 | DN1000 | 40" | 1048 mm 41.26" | 500 mm 19.7" |
| H1200×1000 | DN1200 | 48" | 1255 mm 49.41" | 1000 mm 39.4" |
| H1200×500 | DN1200 | 48" | 1255 mm 49.41" | 500 mm 19.7" |
| H1400×1000 | DN1400 | 56" | 1462 mm 57.56" | 1000 mm 39.4" |
| H1400×500 | DN1400 | 56" | 1462 mm 57.56" | 500 mm 19.7" |
| H1600×1000 | DN1600 | 64" | 1668 mm 65.67" | 1000 mm 39.4" |
Frequently Asked Questions
What pipe types and sizes is the Straight Pipe Repair Clamp for DI Pipe compatible with?
The Straight Pipe Repair Clamp for DI Pipe fits DN50 to DN1600 pipelines and is engineered for ductile iron and grey cast iron. It seals longitudinal cracks, pinholes, circumferential fractures, and joint leaks without cutting out the damaged pipe section.
What is the working pressure rating?
Rated for 1.0 MPa. Standard clamp bodies are tested to at least PN16 (1.6 MPa); higher-pressure variants are available on request for gas-distribution and industrial service.
Can this clamp be installed on a live, pressurized pipeline?
Yes. The Straight Pipe Repair Clamp for DI Pipe is designed for installation on live pipelines under pressure, which means municipal water, gas, or process flow does not have to be interrupted. Our technical team provides pre-install checklists to ensure safe deployment.
What materials are used in the body and sealing gasket?
Construction — shell: Ductile iron QT450-10 · seal: EPDM. Corrosion-resistant stainless-steel banding (SUS304 / SUS316) with EPDM (potable water) or NBR (oil / hydrocarbon service) gaskets is available depending on the application.
What is the lead time and how is it shipped?
Standard lead time is 15 working days ex-factory, shipping FOB Shanghai. Sea, air, and combined transport are arranged through PipeKnot to over 40 countries. Volume orders and project tenders receive priority scheduling.
Is installation guidance and technical support included?
PipeKnot provides English-language installation drawings, torque specifications, and remote technical support. On-site commissioning support can be arranged for qualifying projects in partnership with Anhui Tongfa field engineers.
