Engineering Reference Stainless Steel Hygienic Storage Tanks Long-Term Product Integrity A complete technical-commercial engineering reference for process, dairy, beverage, pharmaceutical and chemical plant designers. Covers hygienic construction, material selection by product, thermal management, insulation, optional gentle agitation, level & inventory control, CIP/SIP, industry-specific design rules, clear boundaries with process/mixing tanks, and Fanpod® ST-series portfolio. Key Takeaways Clear distinction between storage, process, mixing tanks and reactors Material selection guide (316L/304) based on product compatibility Thermal calculations and cooling jacket design CIP/SIP protocols for hygienic industries Complete ST-series portfolio from 500L to 50m³+ Purpose & Scope Tank Comparison Construction Configurations Thermal Management Agitation Design Guidelines Instrumentation CIP/SIP Portfolio FAQ Fundamental Principles of Hygienic Storage Tank Design Hygienic storage tanks are the foundational elements of product integrity in process industries. The key distinction between storage and process lies in the intensity of product change—storage tanks preserve product as received with controlled temperature and hygiene until the next process step, while process tanks perform active transformation. 500L Minimum Standard Volume 50m³+ Maximum Engineered Volume Ra ≤ 0.8µm Standard Dairy Finish Ra ≤ 0.4µm Electropolished Pharma Finish Section 2 Storage Tank vs Process Tank vs Mixing Tank vs Reactor Clear distinction of duties and correct equipment selection Criterion Storage Tank (Fanpod® ST) Process Tank (PT) Mixing Tank (MX) Reactor Primary function Hold product with minimal change in properties Temperature conditioning + moderate mixing Intensive blending / homogenization / suspension Chemical or biochemical conversion Residence time Hours to days (or longer) Minutes to hours Minutes to a few hours Dictated by kinetics Agitation None or very gentle (prevent stratification) Moderate (heat transfer + homogeneity) High (short blend times) High + mass transfer Thermal duty Maintain temperature (cooling or insulation) Active heating / cooling Optional heating / cooling while mixing Reaction heat removal / addition Design driver Hygiene, drainability, inventory accuracy, corrosion Heat-transfer area + U-value Flow pattern, power, blend time Kinetics, pressure, heat of reaction, safety Typical pressure Atmospheric to low Atmospheric to low Atmospheric to low Often elevated Fanpod examples Raw milk silo, cream storage, WFI tank, syrup tank Milk standardization, buffer prep Cream blending, suspension prep Special reaction vessels Rule of thumb: If the vessel's main purpose is to preserve the product as received with controlled temperature and hygiene until the next process step, it is a storage tank. Active transformation of the product moves the duty into process or mixing territory. Section 3 Construction, Materials and Hygienic Design Fundamentals Precise standards for product contact and durability [Image: 316L polished surface with Ra ≤ 0.8µm finish] Product-Contact Materials Stainless Steel Alloy Selection Correct material selection is the first and most critical decision in hygienic tank design. Each product demands specific chemical and mechanical compatibility. AISI 316L – standard for dairy (milk, cream), acidic beverages, pharma, WFI and most food products AISI 304/304L – acceptable for non-corrosive, chloride-free duties (some process waters, mild syrups) Higher alloys or linings – for aggressive acids/chemicals when required [Image: TIG welding with full penetration and flush grinding] Surface Finish & Welding Surface Finish Standards Surface quality directly impacts cleanability, microbiological safety and product shelf life. Mechanical polish Ra ≤ 0.8 µm – dairy, beverage, food standard Electropolish Ra ≤ 0.4 µm or better – pharmaceutical, biotech, WFI and high-purity applications Welding: full penetration, ground flush and polished, free of crevices, PT inspected [Image: Tank with 2% slope to fully drainable outlet] Hygienic Design Hygienic Design Principles Hygienic design extends beyond material selection—geometry, angles, access and cleanability are critical. Fully drainable geometry (minimum 1–2 % slope to outlet) No dead legs; nozzle lengths minimized CIP-compatible spray devices with validated coverage Hygienic manways, sight glasses and instrument ferrules (Tri-Clamp or equivalent) External surfaces designed for easy wash-down; insulation clad in stainless steel [Image: Fanpod fabrication sequence: cutting, rolling, welding, polishing, passivation] Fabrication Process Precision Fabrication by Fanpod Each stage of fabrication is performed under strict quality control and certified procedures. Plate cutting → rolling → TIG welding under controlled procedures Grinding/polishing → passivation → hydrostatic and leak testing Insulation and cladding → final documentation package Section 4 Configurations, Supports and Geometry Optimal selection for spatial and operational constraints [Image: Vertical cylindrical tank with adjustable hygienic legs] Orientation & Bottom Shape Tank Orientation Selection Tank orientation is selected based on space constraints, volume and drainage requirements. Vertical cylindrical – preferred for most duties (smaller footprint, better drainability, natural head for outlet) Horizontal – used when headroom is limited or for certain large-volume or transport-related applications Bottom shapes: torispherical or 15–30° conical for complete drainage; flat bottoms only for non-hygienic or special chemical duties (rare in Fanpod hygienic range) [Image: Support types: adjustable legs, skirt, load cells] Support Systems Legs and Support Support systems must provide both structural stability and hygienic access. Adjustable hygienic stainless legs – for tanks up to ~10–15 m³ Skirt base – for larger vertical tanks Concrete pad or ring beam – for very large silos (> 50 m³) Optional load cells – for gravimetric inventory [Image: Fanpod ST series specifications table] Volume Range & Access Standard Specifications Fanpod offers a complete range of standard and custom sizes. Volume range: standard Fanpod ST models from 500 L to 10,000 L; engineered solutions routinely reach 50,000 L and above Manway and access: top or side manways sized for inspection and maintenance, with hygienic gaskets and safety interlocks when required Section 5 Thermal Management – Insulation, Cooling Jackets and Temperature Control Maintaining product quality stability through precise temperature control [Image: Tank cross-section with polyurethane insulation and stainless cladding] Thermal Solutions Common Temperature Maintenance Solutions Storage tanks frequently require temperature maintenance rather than active processing heat transfer. Polyurethane or mineral-wool insulation + stainless outer cladding – most dairy and beverage tanks Dimple or conventional cooling jacket for raw milk, cream and temperature-sensitive products (glycol or chilled water) Dual-purpose jackets when occasional heating is also needed Heating coils or jackets for products that crystallize or increase viscosity at ambient temperature (certain syrups, oils) [Image: Dimple cooling jacket on raw milk storage tank] Design for Dairy Cold Storage Design for Dairy Cold Storage Raw milk is typically held at 2–4 °C. Jacket or external plate cooler + insulated tank maintains temperature with minimal energy. Heat-loss estimation (indicative): Qloss = Uins × Aouter × (Tambient - Tproduct) Where Uins for a well-insulated stainless-clad tank is typically 0.3–0.8 W/m²·K. Section 6 Optional Agitation for Storage Duty Preventing stratification and settling with minimal power [Image: Gentle low-speed agitator preventing cream separation] Storage Agitation Gentle Agitation for Homogeneity Most pure storage tanks operate without continuous agitation. When agitation is specified it is low-intensity: Slow-speed propeller or paddle to prevent cream rising or solids settling Intermittent operation controlled by timer or level/temperature logic Power densities typically 0.05–0.3 kW/m³ – far below mixing-tank values Anchor or scraper only for high-viscosity products that must remain homogeneous during long storage Note: Fanpod supplies storage tanks both with and without agitators according to product rheology and customer specification. Section 7 Product-Specific Design Guidelines Precise specifications for each product category [Image: Raw milk storage tank with cooling jacket and radar level control] Dairy Raw Milk & Whole Milk Storage 316L, Ra ≤ 0.8 µm, insulated + cooling jacket or external cooling Gentle agitation option to prevent cream separation Accurate level (load cells or radar) for reception and dispatch Full CIP, often with automated sequences [Image: Cream storage tank with scraper agitator for high viscosity] Cream & Fat Products Cream Storage Temperature control critical (usually 4–8 °C or according to process) Higher viscosity → consider gentle agitation or scraper for very thick creams Excellent drainability and CIP essential because of fat residues [Image: WFI tank with electropolished finish and continuous recirculation] Pharmaceutical Purified Water & WFI 316L electropolished (Ra ≤ 0.4 µm or better), orbital welding, full drainability Hot storage (80 °C) or cold storage with strict sanitization Hygienic vents with sterile filters, continuous recirculation loops often integrated ASME BPE and pharmaceutical documentation package [Image: Acid storage tank with 904L alloy and secondary containment] Chemicals Acids, Caustics & Process Chemicals Material selection driven by corrosion data (316L, 904L, duplex or special alloys) Secondary containment considerations, bunding, appropriate venting and safety valves Level and leak detection critical CIP may be replaced by dedicated chemical cleaning procedures Section 8 Instrumentation, Level Control, Automation and P&ID Integration Operational precision and process safety [Image: Instrumentation panel with radar sensors, PT100 and load cells] Core Instruments Essential Sensors Level: radar, guided-wave radar, hydrostatic or load cells (preferred for inventory accuracy) Temperature: PT100 at multiple points if stratification risk exists Optional: conductivity, pH, pressure, foam detection [Image: Integrated P&ID diagram for storage tank with automated valves] Automation & Integration Intelligent Process Control Local panel or integration into plant PLC/SCADA Recipe or sequence control for filling, emptying, cooling and CIP High/low level interlocks, pump protection, valve automation Typical P&ID elements: product inlet/outlet with hygienic valves (Alfa Laval / GEA), CIP supply and return, jacket or cooling utility connections with control valves (Samson / Spirax), vent with filter, overflow, sample valve, drain Note: Fanpod supplies tanks as bare vessels or as complete instrumented and valve-automated packages. Section 9 CIP/SIP, Drainability and Cleaning Validation Uncompromising hygienic standards [Image: Spray ball and rotary jet head with validated CIP coverage] CIP Coverage CIP/SIP Design Spray balls or rotary jet heads positioned for full coverage, including manway and agitator (if present) Tank bottom slope and outlet design guarantee complete drainage Validated CIP cycles (time, temperature, conductivity, flow) SIP capability for pharmaceutical and aseptic storage Shadow-free design around baffles, legs and internal attachments Section 11 Fanpod® Storage Tank Portfolio (ST Series) Engineered solutions for every application Small Model ST-500 Small pilot and batch storage for test batches and additives Technical Specifications: Volume: 500L Orientation: Vertical Material: 304L / 316L Features: Legs, Tri-Clamp Medium Model ST-2000 Intermediate storage for cream, syrup and process liquids Technical Specifications: Volume: 2,000L Orientation: Vertical Material: 316L Features: Insulation option, level nozzle Large Model ST-5000 Large storage for milk, juice and beverage bases Technical Specifications: Volume: 5,000L Orientation: Vertical / Horizontal Material: 316L Features: Jacket option, load cells Industrial Model ST-10000 Large intermediate storage for raw milk and bulk storage Technical Specifications: Volume: 10,000L Orientation: Vertical Material: 316L Features: Skirt base, full CIP Custom Custom Engineered solutions for specific applications Technical Specifications: Volume: Up to 50m³+ Orientation: Vertical / Horizontal Material: 316L / Special alloys Features: Cooling jacket, electropolish, agitation Standard scope: Tank body + bottom + manway + nozzles + supports + basic documentation Common options: Insulation + cladding, cooling/heating jacket, gentle agitator + VFD, load cells, full valve matrix, spray system, electropolish, pharmaceutical documentation package, ATEX execution, nitrogen blanketing Section 13 Frequently Asked Questions When is a cooling jacket required on a storage tank? Whenever product temperature must be actively maintained below ambient for quality or regulatory reasons (raw milk, cream, many beverages). 304 or 316L? 316L is the safe default for dairy, acidic products, pharma and most food applications. 304 may be used only for confirmed non-corrosive duties. Do storage tanks need agitators? Only when separation, sedimentation or temperature stratification would compromise product quality during the expected storage time. What is the most common specification error? Underestimating cleanability requirements or selecting an inadequate level measurement technology for inventory control. Can one tank design serve both milk and syrup? Possible with careful material and finish selection, but dedicated tanks are preferred to avoid cross-contamination and cleaning complexity. How are large outdoor milk silos handled? Skirt or concrete base, full insulation and cladding, cooling system, lightning protection, access platforms and inventory management—all within Fanpod engineering scope. Request a Project-Specific Storage Tank Design Package Provide product list, volumes, temperatures, storage times, utility data and site constraints. Fanpod Engineering will return detailed specifications, GA drawings, thermal and mechanical calculations, and a firm quotation. Request Design Package Download ST Series Brochure
Engineering Reference Stainless Steel Hygienic Storage Tanks Long-Term Product Integrity A complete technical-commercial engineering reference for process, dairy, beverage, pharmaceutical and chemical plant designers. Covers hygienic construction, material selection by product, thermal management, insulation, optional gentle agitation, level & inventory control, CIP/SIP, industry-specific design rules, clear boundaries with process/mixing tanks, and Fanpod® ST-series portfolio. Key Takeaways Clear distinction between storage, process, mixing tanks and reactors Material selection guide (316L/304) based on product compatibility Thermal calculations and cooling jacket design CIP/SIP protocols for hygienic industries Complete ST-series portfolio from 500L to 50m³+ Purpose & Scope Tank Comparison Construction Configurations Thermal Management Agitation Design Guidelines Instrumentation CIP/SIP Portfolio FAQ Fundamental Principles of Hygienic Storage Tank Design Hygienic storage tanks are the foundational elements of product integrity in process industries. The key distinction between storage and process lies in the intensity of product change—storage tanks preserve product as received with controlled temperature and hygiene until the next process step, while process tanks perform active transformation. 500L Minimum Standard Volume 50m³+ Maximum Engineered Volume Ra ≤ 0.8µm Standard Dairy Finish Ra ≤ 0.4µm Electropolished Pharma Finish Section 2 Storage Tank vs Process Tank vs Mixing Tank vs Reactor Clear distinction of duties and correct equipment selection Criterion Storage Tank (Fanpod® ST) Process Tank (PT) Mixing Tank (MX) Reactor Primary function Hold product with minimal change in properties Temperature conditioning + moderate mixing Intensive blending / homogenization / suspension Chemical or biochemical conversion Residence time Hours to days (or longer) Minutes to hours Minutes to a few hours Dictated by kinetics Agitation None or very gentle (prevent stratification) Moderate (heat transfer + homogeneity) High (short blend times) High + mass transfer Thermal duty Maintain temperature (cooling or insulation) Active heating / cooling Optional heating / cooling while mixing Reaction heat removal / addition Design driver Hygiene, drainability, inventory accuracy, corrosion Heat-transfer area + U-value Flow pattern, power, blend time Kinetics, pressure, heat of reaction, safety Typical pressure Atmospheric to low Atmospheric to low Atmospheric to low Often elevated Fanpod examples Raw milk silo, cream storage, WFI tank, syrup tank Milk standardization, buffer prep Cream blending, suspension prep Special reaction vessels Rule of thumb: If the vessel's main purpose is to preserve the product as received with controlled temperature and hygiene until the next process step, it is a storage tank. Active transformation of the product moves the duty into process or mixing territory. Section 3 Construction, Materials and Hygienic Design Fundamentals Precise standards for product contact and durability [Image: 316L polished surface with Ra ≤ 0.8µm finish] Product-Contact Materials Stainless Steel Alloy Selection Correct material selection is the first and most critical decision in hygienic tank design. Each product demands specific chemical and mechanical compatibility. AISI 316L – standard for dairy (milk, cream), acidic beverages, pharma, WFI and most food products AISI 304/304L – acceptable for non-corrosive, chloride-free duties (some process waters, mild syrups) Higher alloys or linings – for aggressive acids/chemicals when required [Image: TIG welding with full penetration and flush grinding] Surface Finish & Welding Surface Finish Standards Surface quality directly impacts cleanability, microbiological safety and product shelf life. Mechanical polish Ra ≤ 0.8 µm – dairy, beverage, food standard Electropolish Ra ≤ 0.4 µm or better – pharmaceutical, biotech, WFI and high-purity applications Welding: full penetration, ground flush and polished, free of crevices, PT inspected [Image: Tank with 2% slope to fully drainable outlet] Hygienic Design Hygienic Design Principles Hygienic design extends beyond material selection—geometry, angles, access and cleanability are critical. Fully drainable geometry (minimum 1–2 % slope to outlet) No dead legs; nozzle lengths minimized CIP-compatible spray devices with validated coverage Hygienic manways, sight glasses and instrument ferrules (Tri-Clamp or equivalent) External surfaces designed for easy wash-down; insulation clad in stainless steel [Image: Fanpod fabrication sequence: cutting, rolling, welding, polishing, passivation] Fabrication Process Precision Fabrication by Fanpod Each stage of fabrication is performed under strict quality control and certified procedures. Plate cutting → rolling → TIG welding under controlled procedures Grinding/polishing → passivation → hydrostatic and leak testing Insulation and cladding → final documentation package Section 4 Configurations, Supports and Geometry Optimal selection for spatial and operational constraints [Image: Vertical cylindrical tank with adjustable hygienic legs] Orientation & Bottom Shape Tank Orientation Selection Tank orientation is selected based on space constraints, volume and drainage requirements. Vertical cylindrical – preferred for most duties (smaller footprint, better drainability, natural head for outlet) Horizontal – used when headroom is limited or for certain large-volume or transport-related applications Bottom shapes: torispherical or 15–30° conical for complete drainage; flat bottoms only for non-hygienic or special chemical duties (rare in Fanpod hygienic range) [Image: Support types: adjustable legs, skirt, load cells] Support Systems Legs and Support Support systems must provide both structural stability and hygienic access. Adjustable hygienic stainless legs – for tanks up to ~10–15 m³ Skirt base – for larger vertical tanks Concrete pad or ring beam – for very large silos (> 50 m³) Optional load cells – for gravimetric inventory [Image: Fanpod ST series specifications table] Volume Range & Access Standard Specifications Fanpod offers a complete range of standard and custom sizes. Volume range: standard Fanpod ST models from 500 L to 10,000 L; engineered solutions routinely reach 50,000 L and above Manway and access: top or side manways sized for inspection and maintenance, with hygienic gaskets and safety interlocks when required Section 5 Thermal Management – Insulation, Cooling Jackets and Temperature Control Maintaining product quality stability through precise temperature control [Image: Tank cross-section with polyurethane insulation and stainless cladding] Thermal Solutions Common Temperature Maintenance Solutions Storage tanks frequently require temperature maintenance rather than active processing heat transfer. Polyurethane or mineral-wool insulation + stainless outer cladding – most dairy and beverage tanks Dimple or conventional cooling jacket for raw milk, cream and temperature-sensitive products (glycol or chilled water) Dual-purpose jackets when occasional heating is also needed Heating coils or jackets for products that crystallize or increase viscosity at ambient temperature (certain syrups, oils) [Image: Dimple cooling jacket on raw milk storage tank] Design for Dairy Cold Storage Design for Dairy Cold Storage Raw milk is typically held at 2–4 °C. Jacket or external plate cooler + insulated tank maintains temperature with minimal energy. Heat-loss estimation (indicative): Qloss = Uins × Aouter × (Tambient - Tproduct) Where Uins for a well-insulated stainless-clad tank is typically 0.3–0.8 W/m²·K. Section 6 Optional Agitation for Storage Duty Preventing stratification and settling with minimal power [Image: Gentle low-speed agitator preventing cream separation] Storage Agitation Gentle Agitation for Homogeneity Most pure storage tanks operate without continuous agitation. When agitation is specified it is low-intensity: Slow-speed propeller or paddle to prevent cream rising or solids settling Intermittent operation controlled by timer or level/temperature logic Power densities typically 0.05–0.3 kW/m³ – far below mixing-tank values Anchor or scraper only for high-viscosity products that must remain homogeneous during long storage Note: Fanpod supplies storage tanks both with and without agitators according to product rheology and customer specification. Section 7 Product-Specific Design Guidelines Precise specifications for each product category [Image: Raw milk storage tank with cooling jacket and radar level control] Dairy Raw Milk & Whole Milk Storage 316L, Ra ≤ 0.8 µm, insulated + cooling jacket or external cooling Gentle agitation option to prevent cream separation Accurate level (load cells or radar) for reception and dispatch Full CIP, often with automated sequences [Image: Cream storage tank with scraper agitator for high viscosity] Cream & Fat Products Cream Storage Temperature control critical (usually 4–8 °C or according to process) Higher viscosity → consider gentle agitation or scraper for very thick creams Excellent drainability and CIP essential because of fat residues [Image: WFI tank with electropolished finish and continuous recirculation] Pharmaceutical Purified Water & WFI 316L electropolished (Ra ≤ 0.4 µm or better), orbital welding, full drainability Hot storage (80 °C) or cold storage with strict sanitization Hygienic vents with sterile filters, continuous recirculation loops often integrated ASME BPE and pharmaceutical documentation package [Image: Acid storage tank with 904L alloy and secondary containment] Chemicals Acids, Caustics & Process Chemicals Material selection driven by corrosion data (316L, 904L, duplex or special alloys) Secondary containment considerations, bunding, appropriate venting and safety valves Level and leak detection critical CIP may be replaced by dedicated chemical cleaning procedures Section 8 Instrumentation, Level Control, Automation and P&ID Integration Operational precision and process safety [Image: Instrumentation panel with radar sensors, PT100 and load cells] Core Instruments Essential Sensors Level: radar, guided-wave radar, hydrostatic or load cells (preferred for inventory accuracy) Temperature: PT100 at multiple points if stratification risk exists Optional: conductivity, pH, pressure, foam detection [Image: Integrated P&ID diagram for storage tank with automated valves] Automation & Integration Intelligent Process Control Local panel or integration into plant PLC/SCADA Recipe or sequence control for filling, emptying, cooling and CIP High/low level interlocks, pump protection, valve automation Typical P&ID elements: product inlet/outlet with hygienic valves (Alfa Laval / GEA), CIP supply and return, jacket or cooling utility connections with control valves (Samson / Spirax), vent with filter, overflow, sample valve, drain Note: Fanpod supplies tanks as bare vessels or as complete instrumented and valve-automated packages. Section 9 CIP/SIP, Drainability and Cleaning Validation Uncompromising hygienic standards [Image: Spray ball and rotary jet head with validated CIP coverage] CIP Coverage CIP/SIP Design Spray balls or rotary jet heads positioned for full coverage, including manway and agitator (if present) Tank bottom slope and outlet design guarantee complete drainage Validated CIP cycles (time, temperature, conductivity, flow) SIP capability for pharmaceutical and aseptic storage Shadow-free design around baffles, legs and internal attachments Section 11 Fanpod® Storage Tank Portfolio (ST Series) Engineered solutions for every application Small Model ST-500 Small pilot and batch storage for test batches and additives Technical Specifications: Volume: 500L Orientation: Vertical Material: 304L / 316L Features: Legs, Tri-Clamp Medium Model ST-2000 Intermediate storage for cream, syrup and process liquids Technical Specifications: Volume: 2,000L Orientation: Vertical Material: 316L Features: Insulation option, level nozzle Large Model ST-5000 Large storage for milk, juice and beverage bases Technical Specifications: Volume: 5,000L Orientation: Vertical / Horizontal Material: 316L Features: Jacket option, load cells Industrial Model ST-10000 Large intermediate storage for raw milk and bulk storage Technical Specifications: Volume: 10,000L Orientation: Vertical Material: 316L Features: Skirt base, full CIP Custom Custom Engineered solutions for specific applications Technical Specifications: Volume: Up to 50m³+ Orientation: Vertical / Horizontal Material: 316L / Special alloys Features: Cooling jacket, electropolish, agitation Standard scope: Tank body + bottom + manway + nozzles + supports + basic documentation Common options: Insulation + cladding, cooling/heating jacket, gentle agitator + VFD, load cells, full valve matrix, spray system, electropolish, pharmaceutical documentation package, ATEX execution, nitrogen blanketing Section 13 Frequently Asked Questions When is a cooling jacket required on a storage tank? Whenever product temperature must be actively maintained below ambient for quality or regulatory reasons (raw milk, cream, many beverages). 304 or 316L? 316L is the safe default for dairy, acidic products, pharma and most food applications. 304 may be used only for confirmed non-corrosive duties. Do storage tanks need agitators? Only when separation, sedimentation or temperature stratification would compromise product quality during the expected storage time. What is the most common specification error? Underestimating cleanability requirements or selecting an inadequate level measurement technology for inventory control. Can one tank design serve both milk and syrup? Possible with careful material and finish selection, but dedicated tanks are preferred to avoid cross-contamination and cleaning complexity. How are large outdoor milk silos handled? Skirt or concrete base, full insulation and cladding, cooling system, lightning protection, access platforms and inventory management—all within Fanpod engineering scope. Request a Project-Specific Storage Tank Design Package Provide product list, volumes, temperatures, storage times, utility data and site constraints. Fanpod Engineering will return detailed specifications, GA drawings, thermal and mechanical calculations, and a firm quotation. Request Design Package Download ST Series Brochure