DJ003 Dismantling Joint Carbon Steel
DJ003 is a carbon steel dismantling joint designed for pipeline systems requiring frequent disassembly and maintenance. It connects two pipe sections with a removable flange pair, allowing access to the line without cutting or welding. The joint uses a bolted flange interface and is built for medium- and low-pressure applications in water, power, petrochemical and heating systems.
| Model Code | DJ003 |
|---|---|
| Category | Dismantling Joints |
| Manufacturer | Tianjin MIC Valve Co., Ltd. |
| Size and Pressure Rating | Confirmed on quotation |
| Certification | ISO 9001 and ISO 14001 certified plant |
| Model | DJ003 |
| Product Type | Dismantling Joint |
| Material | Carbon Steel |
| Connection | Flanged, bolted interface |
| Nominal Diameter | DN10 to DN2600 mm |
| Pressure Rating | 0.05 to 4.0 MPa |
| Series | DJ003 dismantling joint series |
What This Model Gives You
- Enables quick disassembly and reassembly of pipeline sections without welding or cutting
- Reduces maintenance downtime by allowing access to valves, meters or pumps in place
- Carbon steel construction provides strength and durability in industrial service
- Standard flange interface matches common pipe flange standards for easy integration
- Part of a joint programme covering DN10 to DN2600 with pressure ratings up to 4.0 MPa
- Built under ISO 9001 and ISO 14001 certified production systems
Problems It Removes
- Long downtime during maintenance due to welding or cutting when accessing a pipeline
- Inflexible pipeline designs that prevent access to critical components without major rework
- Lack of standardised joint solutions across different pipe sizes and pressures
- Difficulty in replacing meters or sensors without interrupting the entire line
- Need for a single supplier who can provide both valves and access joints in the same range
Where It Is Installed
- Maintenance access on water supply lines in municipal pumping stations
- Routine inspection and servicing of heat exchangers in district heating networks
- Pipeline access points in petrochemical process units for cleaning or sensor replacement
- Service connections in power plant auxiliary systems where frequent isolation is needed
- Installation of flow meters or strainers in industrial piping where future removal is expected
Buyers It Suits
- Plant maintenance engineers needing access points for routine servicing
- EPC contractors specifying modular pipeline systems with built-in disassembly points
- Water utility operators managing long-distance distribution lines with periodic inspection needs
- Industrial plant designers integrating access joints into process skids
- Valve and fitting distributors stocking joint solutions across multiple diameters
How It Is Built
- Carbon steel body with flanged ends for bolted connection
- Removable flange pair allows disassembly without pipe cutting
- Designed for medium- and low-pressure service up to 4.0 MPa
- Nominal diameter range from DN10 to DN2600 mm
- Part of a joint series that continues through the full range of standard pipe sizes
- Flange drilling matches common international standards
Material Selection
- Body, flanges and fasteners are carbon steel; material grade confirmed per order
- Surface treatment and coating options available on request
- Material certificates issued with the order when requested
How It Is Made
- Carbon steel castings inspected and machined on in-house fine machining equipment
- Flanges drilled and prepared to match standard flange patterns
- Joint assembled with bolts and gaskets for testing
- Pressure tested and inspected before packing
- Marked, wrapped and crated for container shipment from Tianjin
How It Is Checked
- Dimensional check of flange bolt hole pattern and face-to-face length before assembly
- Leakage test on assembled joint under rated pressure
- Torque check on bolted connections to ensure even clamping
- Testing performed on the 10 sets of imported inspection and testing equipment
- Records maintained under the ISO 9001 quality management system
Certificates Issued With This Valve
- ISO 9001 quality management system certification
- ISO 14001 environmental management system certification
Certification statements are limited to the management system certificates the factory actually holds. Product-level approvals for your market are confirmed before order.
What Can Be Changed
- Flange standard and drilling pattern matched to the buyer's pipe system
- Material grade adjusted for specific service conditions on request
- Surface finish or coating applied as per specification
- Private label marking and packaging available on OEM orders
- Mixed-diameter orders combined with other valves in one container
How It Compares With the Alternatives
| Welded pipe joint | A welded joint is permanent and requires cutting to disassemble; the dismantling joint allows repeated access without damage |
|---|---|
| Lug type butterfly valve | The lug valve is for isolation; the dismantling joint is for access and does not seal the line |
| Flanged pipe connector with fixed flanges | Fixed flanges require pipe cutting to remove; the dismantling joint uses removable flanges for reuse |
| Threaded joint | Threaded joints are limited to smaller diameters and are not suitable for high-pressure or frequent disassembly |
Installing and Operating This Valve
- Confirm the flange standard and bolt pattern on both pipe ends before ordering
- Ensure the joint is fully disassembled and clean before reassembly
- Use new gaskets and tighten bolts evenly in a cross pattern
- Do not over-tighten bolts to avoid flange distortion
- Store the joint with flanges separated if not in use to prevent gasket damage
- Inspect gaskets and bolt threads before each reassembly
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View SpecificationDJ003 Dismantling Joint Carbon Steel FAQ
What size and pressure rating is DJ003?
DJ003 is available in nominal diameters from DN10 to DN2600 mm and pressure ratings from 0.05 to 4.0 MPa. The exact combination is confirmed on request based on your line specifications.
Can this joint be used for sealing the pipeline?
No. The dismantling joint is designed for access and disassembly, not for sealing. It must be used with gaskets and flanges to maintain a seal, but it is not a shut-off device.
Which flange standard does it follow?
The flange drilling matches common international standards. The exact standard is confirmed during the quotation based on your pipe system.
Can it be supplied with gaskets and bolts?
Yes. Gaskets and bolts are included with the joint unless otherwise specified. Custom bolt material or gasket type can be requested.
Is material certification available?
Yes. Material certificates are issued with the order upon request, confirming the carbon steel grade and compliance with the buyer's requirements.
Do you supply larger diameters in the same series?
Yes. The DJ003 dismantling joint series covers the full range from DN10 to DN2600 mm, and is part of a programme with over 600 models.
What certification does the factory hold?
Tianjin MIC Valve Co., Ltd. is certified to the ISO 9001 quality management system and the ISO 14001 environmental management system.
Get a Price for DJ003 Dismantling Joint Carbon Steel
Tell us the quantity, flange standard and the medium on your line. You get a quotation with a confirmed specification sheet, not a catalogue page.