Stainless Steel 304 Fabricated Basket Strainer - ANSI 150-600LB, 1 inch to 36 inch, Welded Body
Tengs Valve supplies high-quality Stainless Steel 304 Fabricated Basket Strainers with welded / fabricated body construction, available in ANSI Class 150LB, 300LB and 600LB. Sizes range from 1 inch to 36 inch (DN25 to DN900), with bolted cover design (blind flange F304) and flanged RF or FF ends to ASME B16.5 (size under 24 inch) or ASME B16.47 A/B (size above 24 inch). Body and flange are in Stainless Steel 304 / F304, with A182-F304 forged cover. Screens and baskets are supplied in SS304, SS316/316L, duplex 2205 and super duplex 2507, as perforated plate (2mm to 5mm hole) or wire mesh (10-100 mesh). Drain connection is NPT plug; Quick-Opening Cover is available on request. Ideal for water treatment, food and beverage, chemical and general corrosive service in water, gas, oil and steam.
Fabricated Basket Strainer Specification
• Strainer: SS304 Fabricated Basket Strainer
• Sizes: 1 inch to 36 inch (DN25 to DN900)
• Pressure Rating: ANSI 150LB, 300LB, 600LB
• Suitable Medium: Water, gas, oil, steam etc.
• Strainer Material:
• Body: Stainless Steel 304, SS304, SUS304
• Flange: Stainless Steel, F304
• Cover: Blind Flange F304
• Screen and Basket:
• Material: Stainless Steel (304, 316 / 316L, 2205, 2507)
• Perforated Hole Size: 2mm, 3mm, 4mm, 5mm etc.
• Wire Mesh:
• Material: SS304, SS316
• Mesh Size: 10, 20, 40, 60, 80, 100 mesh etc.
• End Connection: RF (Raised Face), FF (Flat Face)
• Body Type: Welded / Fabricated Body
• Cover Type: Bolted Cover (B.C.)
• Drain Connection: NPT Plug
• Special Design: Quick-Opening Cover available on request
✓ SS304 fabricated basket strainer provides corrosion-resistant filtration across ANSI 150-600LB with full 1-36 inch size range
Basket Strainer Standards
1. Design and Manufacture: ASME B16.34
2. Inspection and Test: API 598
3. End Flange Dimension: ASME B16.5 (under 24 inch), ASME B16.47 A/B (above 24 inch)
4. Face to Face and End to End: ASME B16.10
5. Pressure-Temperature Ratings: ASME B16.34
Stainless Steel Basket Strainer Material Selection: SS304 vs SS316 vs SS316L vs Duplex
| Grade | Standard | Key Characteristic | Typical Application |
|---|---|---|---|
| SS304 / F304 | ASTM A240 / A182 | General corrosion resistance, most economical stainless steel | Water treatment, food and beverage, HVAC, general chemical |
| SS316 / F316 | ASTM A240 / A182 | Mo-bearing, chloride resistance | Chemical, marine, pharmaceutical, chloride-containing media |
| SS316L / F316L | ASTM A240 / A182 | Low-carbon + Mo-bearing, best weldability and corrosion resistance | Pharmaceutical, high-purity chemical, welded service |
| Duplex 2205 | ASTM A240 / A815 | High chloride resistance, PREN ≥ 34 | Seawater, desalination, general offshore service |
| Super Duplex 2507 | ASTM A240 / A815 | Highest chloride and sour resistance, PREN ≥ 40 | Seawater injection, sour gas, subsea service |
Reference: ASTM A240, A182, A815. This page covers the SS304 fabricated basket strainer as standard; SS316, SS316L, duplex 2205 and super duplex 2507 are available for higher corrosion resistance. SS304 is the most economical stainless steel choice for general water, food and HVAC service.
SS304 Basket Strainer Screen Selection: Perforated Plate vs Wire Mesh
| Screen Type | Opening Size | Material | Typical Application |
|---|---|---|---|
| Perforated Plate | 2mm, 3mm, 4mm, 5mm | SS304, SS316, SS316L, DSS | Coarse filtration, high dirt load, large debris removal in water and chemical service |
| Wire Mesh | 10, 20, 40, 60, 80, 100 mesh | SS304, SS316 | Fine filtration, pump and instrument protection in food and chemical service |
| Combined Screen | Perforated plate + wire mesh | SS304, SS316, SS316L | High dirt load with fine filtration requirement, common in food and chemical main lines |
Reference: ASME B16.34, API 598. Perforated plate is standard for large diameter and high dirt load service; wire mesh is used where finer filtration is required. Combined screens are commonly specified for food, beverage and chemical main lines. Perforated hole size and mesh size are tailor-made to customer requirements.
Main Material List For SS304 Fabricated Basket Strainer
| No. | Part Name | Material |
|---|---|---|
| 01 | Body | Stainless Steel 304, SS304, SUS304 |
| 02 | Screen | SS304 / SS316 / DSS |
| 03 | Gasket | Graphite or Graphite + Stainless Steel (304SS / 316SS) |
| 04 | Cover | A182-F304 (Blind Flange F304) |
| 05 | Cover Bolt | A193 B8 |
| 06 | Cover Nut | A194 8 |
| 07 | Drain Valve | SS304 |
Reference: ASME B16.34, API 598, ASTM A240, A182, A193, A194. SS304 is the standard body and flange material; A182-F304 forged cover and A193 B8 / A194 8 stainless steel bolts and nuts complete the all-stainless construction. Materials may vary by model and pressure rating. Contact us for confirmed material certificate to EN 10204 3.1.
SS304 Basket Strainer Pressure Rating Comparison: Class 150 vs 300 vs 600
| Pressure Class | Design Pressure (bar) | Design Pressure (psi) | Typical Application |
|---|---|---|---|
| ANSI Class 150 | 19.6 | 285 | Water treatment, food and beverage, HVAC, low-pressure corrosive service |
| ANSI Class 300 | 51 | 740 | General hydrocarbon, chemical process, medium-pressure service |
| ANSI Class 600 | 102 | 1,480 | High-pressure chemical, refinery, power plant, high-pressure corrosive service |
Reference: ASME B16.34. Class 150 is the standard rating for SS304 basket strainer in water, food and HVAC service; Class 300 and 600 are available for higher pressure chemical and refinery service. Flange dimensions follow ASME B16.5 (under 24 inch) or ASME B16.47 A/B (above 24 inch).
SS304 Fabricated Basket Strainer Applications
• Water treatment and distribution: municipal water networks, RO pretreatment and pump protection with SS304 body for corrosion resistance.
• Food and beverage: hygienic stainless steel service, brewing, dairy and sugar processing requiring SS304 wetted parts and Quick-Opening Cover for frequent cleaning.
• Chemical and petrochemical: general chemical filtration, dilute acid and alkali service with SS304 or SS316 basket screen.
• HVAC and building services: chilled water, hot water and low-pressure steam distribution requiring stainless steel body for corrosion resistance.
• Power plant and boiler service: feedwater, condensate and cooling water protection lines with SS304 fabricated body in Class 150 to 600.
• Pulp and paper and textile: white water, process water and non-chloride chemical service with SS304 body and perforated plate screen.
FAQ - SS304 Fabricated Basket Strainer
Q1: What is an SS304 Fabricated Basket Strainer?
A: An SS304 Fabricated Basket Strainer is a basket type pipeline filter with a welded (fabricated) stainless steel 304 body. It is rated to ANSI Class 150LB, 300LB or 600LB and available from 1 inch to 36 inch (DN25 to DN900). The body, flange and cover are all in stainless steel 304 / F304, with A182-F304 forged cover and A193 B8 / A194 8 stainless steel bolts and nuts, forming an all-stainless construction. It provides excellent corrosion resistance for water, food, beverage, chemical and general industrial service, especially where carbon steel body is not suitable.
Q2: What is the difference between SS304 and SS316 basket strainer?
A: SS304 (F304) contains 18% chromium and 8-10% nickel, offering general corrosion resistance at the lowest stainless steel cost. SS316 (F316) adds 2-3% molybdenum, providing significantly better resistance to chloride pitting, crevice corrosion and marine environments. SS304 is selected for non-chloride service such as water, food, beverage and general chemical; SS316 and SS316L are preferred for chloride-containing media, seawater, marine and pharmaceutical service. SS316L (low-carbon) also offers better weldability and resistance to intergranular corrosion after welding. For high-chloride service, duplex 2205 and super duplex 2507 are available.
Q3: What is the size range and pressure rating available?
A: SS304 fabricated basket strainers are available from 1 inch to 36 inch (DN25 to DN900). Pressure ratings include ANSI Class 150LB (19.6 bar / 285 psi), Class 300LB (51 bar / 740 psi) and Class 600LB (102 bar / 1,480 psi). End connections are Flanged RF or FF to ASME B16.5 (size under 24 inch) or ASME B16.47 A/B (size above 24 inch). Face-to-face dimension follows ASME B16.10. The 1-36 inch full size range makes SS304 fabricated basket strainer suitable for both small instrument lines and large diameter main pipelines.
Q4: What screen materials and mesh sizes are available?
A: Screens and baskets are supplied in stainless steel 304, 316 / 316L, duplex 2205 and super duplex 2507. Perforated plate hole sizes include 2mm, 3mm, 4mm and 5mm; wire mesh sizes include 10, 20, 40, 60, 80 and 100 mesh. For general water and HVAC service, 2mm or 3mm perforated plate is common; for pump and instrument protection, 40 to 100 mesh wire mesh is specified. Combined screens (perforated plate + wire mesh) are available for high dirt load with fine filtration requirement. Perforated hole size and mesh size are tailor-made to customer requirements.
Q5: What is the difference between Bolted Cover and Quick-Opening Cover?
A: Bolted Cover (B.C.) is the standard design where the blind flange F304 cover is fixed by A193 B8 bolts and A194 8 nuts. It is the most economical and provides high-pressure sealing, suitable for Class 150 to 600 service. Quick-Opening Cover is available on request for frequent cleaning service; it uses swing bolts or clamp mechanism for fast access without tools. Quick-Opening Cover is commonly specified in food, beverage and water treatment service where the basket must be cleaned regularly. For large diameter (above 24 inch) SS304 basket strainer, a davit arm design is also available for heavy cover lifting without crane.
Q6: How do I maintain an SS304 fabricated basket strainer?
A: Maintenance is simple: isolate the strainer, depressurize, remove the cover bolts (bolted cover) or release the quick-opening mechanism, take out the basket, clean or replace the screen and mesh, install a new gasket (graphite or graphite + stainless steel), and reassemble. The NPT drain plug allows draining the strainer before cover removal. For food and beverage service, clean or replace the screen after each CIP cycle. Screen replacement is recommended when the pressure drop exceeds the initial clean-screen value by 0.5-1.0 bar. For continuous operation without pipeline shutdown, a duplex basket strainer configuration is recommended.
Request a Quote for SS304 Fabricated Basket Strainer
Send us your size (1 to 36 inch or DN25 to DN900), pressure rating (Class 150LB / 300LB / 600LB), body material (SS304 / SS316 / SS316L / Duplex), end connection (RF / FF), screen material and mesh size (perforated plate 2-5mm or wire mesh 10-100), cover type (Bolted or Quick-Opening), and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
Email: sales@tengsvalve.com
Website: Request a Quote Online
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