Payment & Shipping Terms:
|Coverage Area:||All Area In China||Inspection Arrangement:||Any Time|
|Inspector Experience:||At Least 5 Years QC||Products:||Steel Pipes|
|Discount:||Available For Long Project||Inspection Report:||English Inspection Report Within 48 Hours|
Reliable and comprehensive pressure vessel inspection for pipes with qualified inspector on call
INF have spedified pressure vessel inspection services procedure with complete quality control method which cover all critical production process. Every step will be excuted to avoid any defect missed during inspection.
A. Witness welding procedure tests and welder qualification tests as required
B. Ensure that pipe is correct wall thickness and any fittings, flanges, elbows, bends, etc. are correct schedule or rating
C. When shop formed bends are used, ensure that they are free from wrinkles, flattening or excessive thinning
D. Check typical set-up of butt welds for correct alignment, root gap etc. Ensure that correct welding roots are used and that they have been correctly stored prior to use
E. When slip-on flanges are employed, ensure that there is no excess gap between the flange and pipe and ensure that the internal sealing weld is applied
F. Visually inspect all welds for completion, where possible, checking for lack of penetration or excessive penetration into the pipe bore
G. Check all dimensions of the pipe spool; ensure that flange faces are square to pipe centreline and that flange bolt holes are correctly positioned relative to centreline
H. Witness non-destructive testing if required by specification, including review of all radiographs
I. Witness hydrostatic pressure testing. (Check calibration of gauges/charts)
J. If heat treatment is required ensure that recording charts are available and correctly identified
On some alloy pipe, it may be necessary to check hardness of weld areas.
A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure.
Pressure vessels can be dangerous, and fatal accidents have occurred in the history of their development and operation. Consequently, pressure vessel design, manufacture, and operation are regulated by engineering authorities backed by legislation. For these reasons, the definition of a pressure vessel varies from country to country.
|Dish end||Boiler||Heat Exchanger|
3. Importance of the pressure vessel inspection services
Pipe/tube is widely used piping/construction stell products for various industry, as an important pressure containing part and fluid trasportation product, the quality of the pipe product is closely related to the safety and working life of the facilities.
The inspector for pressure vessel inspection services should stricty follow all related material and test standards. To avoid any kind quality risk and better evaluate the manufacturer's capacity, third party inspection services is necessary as eyes and ears of customer.
The inspector for pressure vessel inspection services should have extensive experience and knowedage of the industriy.
4. Common defects of pipes products
During pressure vessel inspection services below is common found defects for pipe products found by quality assurance inspector:
|internal defects||surface defects||raw material|
|leakage during pressure test||welding defects||wall thickness|
|casting cold shot, shinkage, hole||coating quality|
INF quality assurance inspector have rich inspection experiences for many international mega projects, and our QC team performed inspection/ audit/ type approval for many factories with different products in china. We are familar with the normal defects and will help customer on defect sorting and removal.
5. Why choose INF pressure vessel inspection services
Customer-focus Service method:
-on call inspector for all area in china
-real time feecback of critical issue
-resonable inspection price
-optional expediting service available
-inspection report within 48 hours
|Pre-Shipment Inspection (PSI)
Production Monitoring (PM)
During Production Check (DUPRO)
Initial Production Check (IPC)
Lab test witness
|Industry||Piping, Construction, industrial machinery, structural applications,Boilers and Heat Exchangers, Drilling, Plumping, mechanical structures, hot springs, geothermal,Oil and gas drilling,Offshore structures, Piping and pipe lines,Electric and power plants,ships||Report||
Daily, weekly, monthly or per customer requirement
English report or per customer request
Report will be submitted within 48 hour after inspection finished