Engineered Glass for
Process-Critical Applications
Laminated safety panels, borosilicate process piping, and blast-rated enclosures for refineries, pharmaceutical plants, and offshore rigs. ASTM-certified. 48-hour drawing turnaround.
From Flame-Worked Flasks
to Blast-Rated Enclosures
Each section below contains ungated specification data. The full ASTM test report library is available after a 30-second form.
Hand-Blown Laboratory Glass Era
Anneal was established in 1971 by ceramic engineer Robert Hale in a converted machine shop outside Houston. The first decade was defined by hand-blown borosilicate laboratory vessels — reaction flasks, condensers, and custom distillation columns for petrochemical research labs. Every piece was blown to client-specified dimensions by a three-man team, with wall thickness held to ±0.3 mm by hand.
Mastered annealing kiln profiles for stress-free borosilicate, establishing thermal expansion coefficients and strain-point data that remain the basis of all Anneal product datasheets today.
Tempered Architectural Panel Pivot
The oil bust of 1985 forced a strategic pivot. Robert's son Marcus Hale led the acquisition of a horizontal tempering furnace, opening Anneal to architectural and industrial glazing contracts. Tempered safety panels for refinery control rooms, chemical plant observation windows, and blast-rated door lites became the growth engine. Production scaled from 400 units to 12,000 square feet of tempered panel annually by 1992.
Introduced precision edge-grinding and CNC drilling capabilities. Achieved ASTM C1048 certification for heat-treated glass in 1989 — the first Texas-based fabricator to do so for chemical plant applications.
Borosilicate Process Piping Systems
A contract with a major Gulf Coast pharmaceutical manufacturer in 1998 launched Anneal into process piping. Custom borosilicate glass pipe systems — DN15 through DN200 — for API synthesis reactors, solvent handling lines, and acid-waste drains became the technical flagship. Each pipe run is designed to client P&ID drawings, with flange faces ground to DIN 28120 tolerances and PTFE-lined joints for chemical compatibility.
Developed in-house hydrostatic pressure testing rig rated to 10 bar. Introduced chemical-compatibility matrix documentation for 140+ reagents — the foundation of the current Specification Library.
Laminated Blast-Resistance Systems
Following the 2005 Texas City refinery incident, API 752/753 risk-based siting studies drove demand for blast-resistant glazing across the Gulf. Anneal invested in laminated glass production lines — PVB and SGP interlayer systems — capable of meeting ASTM F1642 blast test criteria. Offshore platform window assemblies rated to 5 psi overpressure and 100 ms positive phase duration became the company's highest-margin product line.
Achieved UL 752 Level 3 ballistic certification and ASTM F1642 blast rating. Introduced structural silicone glazing systems for blast-resistant curtain wall integration. Became a qualified vendor on 3 major EPC contractor approved vendor lists.
Electrochromic Smart Glass R&D
Anneal's current R&D program focuses on electrochromic (EC) glass integration for industrial environments — switchable glazing for reactor observation windows that can shift from 70% VLT to 5% VLT on demand, protecting operators during high-intensity process events. Pilot installations are underway at two Gulf Coast chemical facilities. EC control systems are designed to integrate with DCS/SCADA via 4–20 mA or Modbus RTU.
First industrial-grade EC glazing system rated for continuous operation in Class 1 Div 2 hazardous areas. Targeting ATEX Zone 2 certification in Q3 2025. Proprietary sol-gel coating process achieves switching cycle life >100,000 transitions.
Five Capability Families.
One Vendor Qualification.
Laminated Safety Panels
PVB and SGP interlayer systems for blast-resistant and security glazing. Tested to ASTM F1642 and UL 752. Available in monolithic, laminated, and insulated configurations.
Borosilicate Process Piping
DN15–DN200 glass pipe systems for pharmaceutical, chemical, and food-grade process lines. PTFE-lined joints, DIN 28120 flanges, full P&ID design service.
Blast-Rated Enclosures
Custom window and door assemblies for API 752/753 compliant control rooms, analyzer shelters, and offshore accommodation modules.
Laboratory & Reactor Glass
Custom borosilicate reaction vessels, condensers, heat exchangers, and sight glasses for pilot plant and production reactors. Rated for full vacuum to 6 bar.
Electrochromic Smart Glass
Switchable glazing for reactor observation windows and hazardous area enclosures. 5–70% VLT range, DCS/SCADA integration via Modbus RTU. ATEX Zone 2 certification pending.
143 Pages of ASTM Test Data,
Ungated After One Form.
Procurement engineers and plant managers use this library to complete vendor qualification packages without a single phone call.
Name, company, and application type — that's all. Instant PDF access. No sales call required.
CAD Files In. Fabrication
Drawings Back in 48 Hours.
DWG + PDF · Full Tolerance Callouts
Upload existing CAD files (DWG, DXF, STEP, PDF sketch) or describe geometry in the notes field. Include material spec if known.
Our engineering team produces fabrication drawings with full tolerance callouts, material certification references, and BOM. Returned as DWG + PDF.
One round of revision included at no charge. Drawing approval triggers material procurement and production scheduling.
Fabricated to drawing. Material traceability documentation, heat numbers, and test certificates provided with every shipment.