Case Overview
A chemical process equipment OEM building heat exchangers and reactors for chloride-rich and reducing-acid service had suffered from misidentified material: a previous supplier’s batch labeled “C-276” failed incoming PMI (Positive Material Identification), halting fabrication for two weeks. The OEM needed a supplier that could guarantee grade identity and document corrosion-related properties for each batch.
DZX qualified with PMI-verified batches and complete mill documentation: Hastelloy C-276 tube and plate for the most demanding sections, Incoloy 825 for moderate service and titanium for oxidizing conditions—all with chemistry, mechanical and corrosion-test documentation aligned to the OEM’s fabrication and inspection process.
This case summarizes the application requirements, materials supplied by DZX and delivery value. For case-specific technical data, please contact our engineering team.
| Item | Details |
|---|---|
| Client Profile | Chemical process equipment OEM (heat exchangers and reactors) |
| Project Scale | Multiple heat exchangers and reactors built annually |
| Application | Tube bundles, reactor linings and piping for chloride and reducing-acid service |
| Materials Supplied | Hastelloy C-276, Incoloy 825 and titanium |
| Supply Forms | Tube, plate, sheet and wire |
| Lead Time | Mill batches: 4-6 weeks; standard stock sizes: 1-2 weeks |
| Project Country | United States |
| Project Year | 2025 |
Our Solution
The OEM’s fabrication process relied on three assurances that the previous supplier could not provide:
- Grade identity: a mislabeled “C-276” batch failed incoming PMI and stopped fabrication. New supply had to pass PMI for every heat, every time.
- Corrosion-related properties: heat-exchanger tubes for chloride service required documented chemistry (Mo and W content) and agreed corrosion-test evidence, beyond a generic mill certificate.
- Fabrication consistency: tube-wall tolerances and surface condition had to be uniform enough for expansion and welding without rework.
DZX made grade verification part of the supply:
Every Hastelloy C-276 tube and plate batch underwent PMI chemistry verification, with Mo/W content documented for corrosion resistance. Incoloy 825 covered moderate chloride and sulfuric-acid service, while titanium served oxidizing environments. Tube wall thickness was held within standard tolerances for reliable expansion. Each batch included mill certificates and agreed corrosion-test documentation in the customer’s incoming-inspection format.
| Material | Representative Grades | Key Properties | Available Forms |
|---|---|---|---|
| Hastelloy Alloys | C-276, C-22 | Resistance to chlorides and reducing acids | Tube, plate, sheet and wire |
| Incoloy | 825 | Moderate acid and chloride service | Tube, plate and wire |
| Titanium | TA1, TA2, GR2 | Oxidizing conditions and seawater | Tube and plate |
View Hastelloy Alloys → | View Incoloy Alloys → | View Titanium Alloys →
Plate, strip, tube and bar, N10276
Corrosion-resistant piping and heat-transfer components
TA1 / TA2 plate, strip and tube
Technical Specifications
Key technical parameters agreed before production. Contact us for grade-specific datasheets and tolerance-verification reports.
| Parameter | Agreed Specification | Verification Method |
|---|---|---|
| Tube dimensions (typical) | 25 mm OD × 2.5 mm wall | Micrometer + ultrasonic wall-thickness measurement |
| Wall-thickness tolerance | ASTM B622(C-276)/ B163(825) | Ultrasonic inspection, batch NDT |
| Grade identity | PMI verification for every heat | Batch PMI (XRF) report |
| Chemistry (corrosion-related) | Documented C-276 Mo/W content | Chemical analysis report |
| Corrosion testing (as agreed) | To customer specification | Test report with sample records |
Each supplied batch includes a quality inspection certificate with chemical analysis, meeting the applicable standard for each grade.
| Material | Applicable Standards |
|---|---|
| Hastelloy Alloys | ASTM B622, B575 |
| Incoloy 825 | ASTM B163, B423 |
| Titanium | ASTM B265, B861 |
| Quality System | PMI report + mill certificate with chemical analysis |
Delivery and Quality Support
- Fast delivery: Sample and production lead times follow the project schedule; standard grades and sizes can be dispatched promptly from stock.
- Quality traceability: Every batch includes material certificates and inspection reports, with full heat and batch traceability.
- Technical support: Responsive support covers pre-sale material selection, drawing review and post-sale processing advice.
- Ongoing service: Regular follow-up after delivery tracks performance and addresses feedback promptly.
Customer Feedback
- Zero PMI failures: every delivered heat passed Positive Material Identification
- Fabrication on schedule: consistent wall tolerances eliminated tube-expansion rework
- Auditable corrosion data: chemistry and corrosion-test documentation for each batch
- One source, three alloys: coordinated C-276, Incoloy 825 and titanium supply under one quality system
- Stock coverage: standard sizes shipped in 1-2 weeks to maintain fabrication continuity
- Mill-level traceability: heat numbers and complete documentation met OEM inspection-record requirements
Our Capabilities
Jiangsu DZX Technology Co., Ltd. (Changzhou DLX Alloy) was founded in 2016. Its core team has worked in the field since 2002, with 24 years of precision-alloy R&D and production experience, operating a self-owned 12,000-square-meter modern factory with an ISO9001 system covering three inspection stages. Annual alloy output exceeds 1,200 tonnes, serving 1500+ business customers worldwide. The company operates integrated melting, drawing, annealing and precision-machining workshops, supporting volume customization of strip, wire, tube and bar. Every batch includes a chemical analysis report (MTC) for full delivery-quality traceability.
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