Shop Spool Fabrication & On-Site Erection
SS Piping Qatar operates a dedicated metal fabrication yard equipped with modern cold-cutting saws, TIG welding machines, and mechanical pipe positioners.
By pre-fabricating up to 80% of pipe spools in our controlled indoor workshop, we maintain strict quality control, minimize field weld joints, and accelerate the installation schedule on the client's construction site.
Our field technicians handle everything from structural piping supports, hanger installation, rigging, alignment, weld assembly, and final bolt-up to equipment flanges.
Submit Drawing for Fabrication Estimate
Our Project Execution Process
Drawing & Engineering Review
We convert client isometric drawings and P&IDs into shop spool drawings, detailing cut lengths, weld joint locations, and material requirements.
Precision Cold-Cutting & Beveling
Pipes are cold-cut to prevent heat-affected zones. Beveling is performed using mechanical pipe-facing machines to ensure optimal weld preparation and root gap.
TIG Welding & Argon Purging
Welding is conducted using the GTAW (TIG) process. We execute continuous internal argon gas back-purging to prevent root oxidization ("sugar crystallization").
Pickling & Passivation
Completed spools undergo chemical acid pickling and passivation to restore the chromium oxide passive layer, protecting the metal from local pitting.
NDT & Hydrostatic Testing
Spools are tested on site. We coordinate 100% Visual Inspection, Radiographic Testing (RT) on high-pressure lines, and hydrostatic testing to 1.5x working pressure.
Welder Qualification & WPS Specifications
Every welder on our payroll is certified by third-party testing agencies (like Bureau Veritas or TÜV) to ASME Section IX standards. We maintain pre-approved Weld Procedure Specifications (WPS) and Welder Performance Qualifications (WPQ) for 304, 316L, and duplex steels in all thicknesses.
Standards Followed: ASME B31.3 (Process Piping), ASME B31.1 (Power Piping), AWS D1.6 (Stainless Steel Structural Welding).
Ready to Fabricate and Install Your Piping Scope?
Upload your isometric drawings and P&IDs — our estimation desk will return a fabrication and installation proposal within 48 hours.
Fabrication & Installation FAQs
Workshop pipe-spool fabrication and on-site erection, testing and commissioning in Qatar.
Do you offer both workshop fabrication and on-site installation?
Yes. We fabricate pipe spools in our Doha workshop under controlled QA/QC, then mobilise for on-site erection, alignment, welding, testing and commissioning anywhere in Qatar.
What testing and inspection is included?
Hydrostatic and pneumatic pressure testing, NDT (RT/PT/MT/UT), PMI and dimensional inspection against isometrics - delivered with full ITP and documentation packages.
How do you ensure weld quality?
All welders are ASME Section IX qualified (6G), working to approved WPS/PQR, with 100% visual inspection and sampled radiography per project specification.
What is your typical spool fabrication lead time?
Lead time depends on scope and material availability; stocked grades allow rapid turnaround. Share your drawings for a scheduled fabrication and delivery plan.