Petrochemical plants run aggressive media at temperature – fitting material and joint integrity decide plant uptime. We supply flanges, butt weld fittings and line blanks for cracking units, separation trains, chemical loading and utility headers.
Typical Petrochemical Packages
- Process lines – A234 WPB elbows/tees SCH40-80, weld neck flanges RF class 150-600
- Corrosive streams – A403 WP316/316L fittings and flanges, pickled and passivated
- High-temperature headers – WP11/WP22 alloy fittings, RTJ facings class 900+
- Turnaround isolation – spectacle blinds and spades per B16.48, thickness-stamped
- Instrument points – tapped blinds for gauges and sample valves
Documentation for Petrochemical QC
Plant QC teams need paper that matches metal: EN 10204 3.1 mill certificates per heat, optional 3.2 third-party release, PMI spectrograms on stainless/alloy, dimensional reports on line blanks, and heat-number stamping that ties every piece to its certificate. We pack per line number with documentation dossiers organized for turnaround warehouses.
FAQs
Can you match an existing plant line class? Send the line class table – we confirm dimensions, facings and materials before quoting.
Urgent turnaround quantities? Standard items ship from stock; we prioritize turnaround packages with air freight options. Contact us with your dates.
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Common Petrochemical Line Classes
Typical units and their fitting profiles: distillation and separation – carbon steel SCH40 with RF weld necks; hydrotreating – higher schedules with 1.25Cr alloy on hot loops; aromatics and acid units – 316L stainless with full pickling; loading racks – carbon steel with spectacle blinds at every bay for product changeover isolation.
Why Fitting Quality Decides Turnaround Cost
A fitting that arrives with a bad bevel, wrong schedule or missing heat number stops the weld crew and triggers re-inspection – each stalled joint costs hours of turnaround time. We pre-check every RFQ against the line class, machine all bevels, stamp every piece, and pack per line number so crews pick and weld without sorting crates. That is the practical value behind certificate language.