Prefabrication of Pipe Spools and Industrial Piping
JCMARVEL Engineering and Trading LLP executes the fabrication and supply of Pipe Spools and Industrial Piping for various process applications.
Our Fabrication Processes
1. Detailing
Based on design or field measurements, we pepare the shop fabrication drawings and isometrics.
2. Procurement
Sourcing materials & fittings from reliable supply sources, matching Mill Test Certificates and tracking.
3. Fabrication
Various shop fabrication processes like cutting, edge preparation /beveling, grinding etc.
4. Assembly
Fabricated parts are fitup and assembled for welding in a phased manner for welding commencement.
5. Welding
Strict conformity to WPS / PQR. Use of reliable experienced welders to produce sound weld joints.
6. Testing & NDT
As per project ITP, stagewise inspection, DP, MPT, UT, RT, Dimensional Inspection Tests etc. are performed.
7. Coatings
Blasting & Painting of CS Piping as per NACE/SSPC. Passivation and/or Pickling for SS Pipe Spools.
8. Delivery
Loading & shipment to client on third party transport, or loading in client arranged transport vehicles.
Welding & Control
Welding: CS and CS alloy piping are typically welded by SMAW process, TIG Process, and by combo SMAW/TIG process. TIG welding is employed for SS Piping etc.
Welding Electrodes: Selection of electrodes is more crucial in welding of piping, as they are critical in producing sound weld joints. We only use reliable brands of electrodes for welding.
Inpection and Electrode Control: Strict stagewise inspection and Non Destructive Testing (NDT) as per applicable Inspection and Test Plan (ITP) is employed. Electrodes pass through proper storage, baking, and holding cycles.
Typical Specifications
Materials: Steel and Stainless Steel Piping are manufactured from different material grades like Carbon steel, Alloy Steels, LTCS, SS304, SS304L, SS316, SS 316L, etc.
Applications: Piping for process water, seawater, fire water, corrosive chemicals, non-corrosive chemical, crude, oils, fuel, air lines, steam, gas etc. Seawater lines are cement lined systems.
Coating Systems: Surface preparation and coating is done for external surface only for most pipe spools. The applied systems may be epoxy, bitumen, polyurethane etc. Internal cement lined piping is used for seawater spools.