Pipe Repair Clamps
Gas Pipeline Repair Clamp (NBR Seal)
Full-seal repair clamp with NBR (nitrile rubber) gasket specifically designed for gas and natural gas pipelines. Covers straight pipe, tee, elbow, and union joints. DN15 to DN100.
Inquire NowSpecifications
How to read the model number： MH100 = straight-pipe repair for DN100 gas/natural gas pipeline. Full hermetic seal for gas service.
| Model | DN | NPS | OD (mm) OD (in) | Length (mm) Length (in) |
|---|---|---|---|---|
| MH100 | DN100 | 4" | 118 mm 4.65" | 373 mm 14.7" |
| MH150 | DN150 | 6" | 170 mm 6.69" | 398 mm 15.7" |
| MH200 | DN200 | 8" | 222 mm 8.74" | 400 mm 15.7" |
| MH300 | DN300 | 12" | 326 mm 12.83" | 480 mm 18.9" |
| MH400 | DN400 | 16" | 429 mm 16.89" | 517 mm 20.4" |
| MH450 | DN450 | 18" | 480 mm 18.90" | 510 mm 20.1" |
| MH500 | DN500 | 20" | 532 mm 20.94" | 568 mm 22.4" |
Frequently Asked Questions
What pipe types and sizes is the Gas Pipeline Repair Clamp (NBR Seal) compatible with?
The Gas Pipeline Repair Clamp (NBR Seal) fits DN100 to DN500 pipelines and is engineered for galvanized steel and carbon and galvanized steel. 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 Gas Pipeline Repair Clamp (NBR Seal) 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: QT450-10 · seal: NBR (nitrile rubber). 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.
