Buried type corrugated compensator, who could be called axial externally pressurized expansion joint /bellows, is composed of internal tube, external tube, corrugation - the affiliated pressure bearing component, end links & other components required. It is a kind of corrugated compensator, which is an equipment to compensate dimensional change caused by thermal expansion or mechanical vibration of pipeline/conduit/vessel through corrugated compensator's elastic component. Based on above, it can decrease the deforming stress exerted on pipeline and increase service life of pipeline. This compensator works mainly through stretching the corrugation to absorb the axial displacement caused by tensile force within pipeline. It has some outstanding main characteristics, such as large compensation dosage, good thermal insulation, easy elimination of residual medium & etc.. Lanphan's Buried type corrugated compensator, satisfying the need of large compensation dosage, high pressure and resistance of corrosion, fatigue and abrasion, has been widely used in pipeline connection of heat-supply pipe network, metallurgy, power plant, industrial equipment manufacturing and engineering pipes. The corrugations bearing external pressure with better performance of sealing and buckling resistance could absorb large displacement.
Structure:Buried type corrugated compensator has three patterns of structure, simplex, complex and bidirectional type. Corrugations in all of the three are equipped within external tube and its protection.
Connection type: Corrugated compensator has two kinds of connection type, welded connection & flange connection.
Buried type corrugated compensator can be used together with guide cylinder (lining sleeve), draw rod, gas vent or drainage exit in practice.
Differences from Axial internally pressurized corrugated compensator:
- Medium pass through the externally pressurized compensator outside corrugation, while through internally pressurized compensator within corrugation.
- The former works through stretching the corrugation to absorb thermal expansion of pipeline, while the latter through compressing.
- The former is mainly applied to axial displacement compensation, while besides the axial displacement compensation, the latter also could compensate lateral/resultant displacement of axial and lateral, as well as angular displacement.
- Never cut external tube of the former from which medium would happen to leakage, while external tube (add based on requirement) of the latter could be cut to see the condition of corrugation.
Nominal diameter: DN32-DN1600
Axial compensation dosage：18mm-400mm
Material: SS304, SS321, SS316L, etc..
Corrugated compensator standard number: GB/T 12777-2008
Lanphan corrugated compensator also could meet ASME, DIN, JIS, AS/NZS & etc..
|fatigue fracture time
axial compensation dosage
|1500||3000||15000||flange connection||flange||connecting pipe||flange||connecting pipe|
Notes: flange connection is customizable as client requirements, national standard, ministerial standard or other standards are applicable.
Buried type corrugated compensator is widely used in petroleum, chemical industry, steel, metallurgy, machinery, transportation, shipping, wharf, construction, rubber, paper making, spinning, electric & heat supply, pharmacy, medical & other industries.
- According to product’s using condition, technicians will offer rationalization;
- Provide detailed product performance specification;
- Provide professional quoted price;
- Provide 24-hour technical consulting reply.
- Begin to supervise from raw material, its qualified rate can reach to 100%;
- Whole manufacturing process are in strict accordance with promised procedure requirements, product qualified rate can reach to 100%;
- Provide product’s inspection record of key junctures to customers;
- Provide production schedule photos to customers at regular intervals;
- Package and transport products strictly accordance with export standard.
- Under the premise of correct installation, normal maintenance and using, we guarantee one-year warranty period;
- When warranty period has expired, our sold products enjoys lifetime guarantee repair, we only charge cost price for changing product’s standard component and sealing component;
- During installation and adjustment period, our after-sale service staff will communicate with customers frequently to know product’s running state in time. Assist customers to install and adjust products until customers are satisfied;
- If product has malfunction during operation period, we’ll offer you satisfied answer in time. We’ll reply you within 1 hour and provide solution or send staff to spot within 24 hours after receiving maintenance notification.
- Lifelong free technical support. Conduct satisfaction survey and inquiry equipment running condition to clients by telephone or e-mail semiannually from the first day of equipment running, put on records of acquired information.
- What’s the max pressure of corrugated compensator?
- What diameters can you produce?
From DN32 to DN1600.
- Product will be tested? Can you provide pressure test report?
Yes, we can provide pressure test report.
- Can you provide raw material detection proof?
Yes, we can.
- Can you do flaw detection?
Yes, we can.(you need to tell us in advance).
- Can you provide installation manual?
Yes, we can.
Packaging & Shipping
Wrap film wrapping to protect product from scratch and dust.
Fumigation-free wooden case reinforced.
- We have 12, 000 ton hydraulic equipment, to make sure one-time forming of high pressure products.
- We have professional flaw detection team, real time monitoring product quality.
- Supervise every production procedure and every detail.
- Sufficient raw material storage, deliver products in time.
- Cooperate with universities and colleges, guaranteed advancement of product technology.