Industrial Boilermaking

What is Industrial Plate Work?

Industrial welding industrial plate work is the technical specialty within metalworking focused on the design, layout, cutting, forming, assembly, and welding of medium and heavy gauge metal plates, tubes, and profiles. Unlike conventional blacksmithing, precision plate work requires structural engineering calculations, material resistance analysis, and high-integrity welds to contain, channel, or support mechanical loads, pressures, and material flows.

Key elements manufactured through this process include:

• Storage Vessels and Tanks: For water, fuels, oils, chemicals, and liquid raw materials.
• Hoppers and Silos: Conical, pyramidal, and cylindrical structures for handling bulk solids, grains, cement, or minerals.
• Duct and Chimney Systems: Large-diameter pipes for conveying air, combustion gases, vapors, and industrial dust control.
• Cyclones and Dust Collectors: Centrifugal equipment for separating solid particles from gas streams.
• Transitions and Diverter Hoppers: Parts with complex geometries (such as square-to-round transitions) that connect different stages of a production process.

When is it needed?

A plant or maintenance manager should turn to professional industrial plate work services when the following operational situations arise:

1. Extreme abrasion or corrosion wear: Thinning of walls in hoppers, discharge chutes, or ducts that transport abrasive materials (clinker, sand, ore, grains).
2. Expansion or modification of production lines: Need to integrate new equipment that requires custom duct interconnections or specific feed hoppers.
3. Fluid, dust, or gas leaks: Loss of hermeticity in storage tanks or extraction systems that compromise plant safety and cleanliness.
4. Regulatory compliance update: Requirement to adapt storage tanks to environmental regulations (such as containment dikes or vents) or structural safety standards.
5. Visible structural failures: Deformations, cracks in weld seams, or buckling in heavy equipment supports due to material fatigue or overloads.

Problems it solves

• Unscheduled plant shutdowns: The failure of an extraction duct or the rupture of a discharge hopper can completely stop a production line. Preventive and corrective plate work avoids these costly downtimes.
• Raw material losses: Incorrect design or wear of hoppers and silos causes material accumulations ("rat-holes" or bridging) and leaks that represent direct economic losses.
• Occupational safety and health risks: Leaks of harmful gases or combustible dusts due to cracked ducts violate STPS regulations and endanger the health of operators.
• Environmental non-conformities: Fugitive emissions to the atmosphere from damaged chimneys or ducts that can lead to closures or fines from PROFEPA or state authorities.

Benefits for your plant

• Maximization of useful life: The use of appropriate alloy steels (such as stainless steels or abrasion-resistant steels AR400/AR500) multiplies the durability of components exposed to severe conditions.
• Optimized flow efficiency: Precise layout and development of transitions and elbows reduce friction pressure losses in ventilation systems and prevent solid material stagnation in hoppers.
• Accelerated Return on Investment (ROI): Equipment manufactured to exact specifications reduces corrective maintenance costs and optimizes loading and unloading cycle times.
• Full regulatory compliance: Ensures approval in quality (ISO 9001), safety (ISO 45001), and environmental (ISO 14001) audits.

Applications and industries that use it

Our specialized plate work services cater to the most demanding sectors in northeastern Mexico:

• Iron and Steel Industry: Blast furnace gas ducts, ore hoppers, fume capture hoods.
• Cement and Construction Industry: Storage silos, pneumatic conveying ducts, weigh hoppers.
• Chemical and Petrochemical Industry: Stainless steel process tanks, non-pressurized reactors, vent stacks.
• Food and Beverage Industry: Food-grade stainless steel receiving hoppers (sanitary finish), process water tanks, steam extraction ducts.
• Mining: Transfer chutes, heavy ore discharge hoppers, wear liners.

Types of solutions / Available systems

Materials and technologies

At SINE México we select materials and welding consumables based strictly on chemical compatibility, mechanical and thermal resistance required by the project:

• Structural and Pressure Vessel Steels: ASTM A36, A516 Grade 70 (for high pressure and temperature), and high-strength steels such as ASTM A572.
• Stainless Steels: AISI 304/304L (general and food applications) and AISI 316/316L (high resistance to acid corrosion and chlorides).
• Special Wear-Resistant Steels: Hardox or AR400/AR500 type wear plates for high impact and friction zones.
• Welding Processes:
  • GMAW (MIG/MAG): For high productivity in structural carbon steel joints.
  • GTAW (TIG): For high-quality roots and sanitary welds in stainless steel.
  • FCAW (Flux Cored): Ideal for field assembly due to its high deposition rate and wind resistance.
  • SMAW (Shielded Metal Arc Welding): For specific repairs and structural joints under AWS D1.1 standard.

Applicable Regulations and Standards

Our design, manufacturing, and quality control processes align with the most rigorous national and international standards:

• ASME Section VIII Div. 1: Code for the design and fabrication of pressure vessels.
• API 650: Standard for welded tanks for oil storage and chemical products above ground.
• AWS D1.1 / D1.6: Structural welding code for carbon steel and stainless steel, respectively.
• NOM-009-STPS: Safety conditions for performing work at height during the assembly of structures and chimneys.
• NOM-027-STPS: Welding and cutting activities - Safety and hygiene conditions.

Our work process (SINE)

1. Survey and Diagnosis: Free technical visit to your plant to take measurements, analyze operating conditions (temperature, pressure, abrasion), and review existing plans.
2. Detail Engineering: 3D modeling of parts, development of shop drawings (detailing), and structural calculation if the project requires it.
3. Material Preparation: High-definition CNC plasma plate cutting, profile rolling, bending, and edge beveling to ensure precise assembly.
4. Assembly and Welding in Workshop: Assembly of components using clamping devices to prevent thermal deformation and welding application by certified personnel.
5. Quality Control (NDT): 100% visual inspection and application of Non-Destructive Tests (liquid penetrants, ultrasound, or hydrostatic tests in tanks) to guarantee zero leaks.
6. Surface Treatment and Painting: Abrasive cleaning with sandblasting and application of high-resistance industrial coatings.
7. Maneuver, Assembly, and Delivery: Safe transfer to the site, assembly with cranes and qualified personnel, field welding, final functional tests, and delivery of quality dossier.

Common errors when hiring / installing

• Hiring workshops without certified welders: The use of unqualified welders (WPS/PQR) results in welds with porosity, lack of fusion, or undercuts that prematurely fail due to vibrations or pressure.
• Omitting wear and corrosion analysis: Manufacturing a hopper from commercial carbon steel to handle highly abrasive or corrosive materials just to reduce initial cost, which drastically reduces its lifespan.
• Lack of hermeticity tests: Not requiring hydrostatic or liquid penetrant tests on storage tanks, leading to micro-leaks that are difficult to detect after commissioning.
• Not considering assembly tolerances: Manufacturing rigid parts without considering the actual deviations of civil works at the plant, which causes costly delays during on-site installation.

Factors determining cost

The budget for an industrial metal fabrication project is calculated based on specific technical variables, so there are no generic prices per kilogram or square meter:

• Type of material and alloy: Stainless steel and anti-wear plates (AR) have a significantly higher cost than structural carbon steel.
• Plate thickness and geometric complexity: Parts with complex transitions or multiple bends require more engineering and fabrication hours.
• Type and percentage of required tests: The requirement for 100% radiography on weld seams increases quality control costs.
• Assembly conditions: Assembly height, need for heavy-duty cranes, restricted time windows (nighttime or holiday plant shutdowns), and site safety requirements.

SINE Guarantee

At SINE México we deliver each project with a Quality Dossier which includes:

• Quality certificates for raw materials (plates, profiles, welding consumables).
• Non-destructive testing reports signed by Level II inspectors.
• Welder Performance Qualification (WPQ) records.
• Written warranty against manufacturing defects and weld failures under design operating conditions.

Request your quote

Optimize your plant's infrastructure with high-engineering industrial metal fabrication solutions. At SINE México we conduct free technical diagnostic visits in Torreón, Gómez Palacio, Lerdo, Saltillo, Ramos Arizpe, Piedras Negras, and throughout the northeast of the country.

• WhatsApp / Phone: +52 871 228 3838
• Email: ventas@sinemantenimiento.com
• Head Office: Torreón, Coahuila, México.
• Contact form: sinemantenimiento.com/cotizar