Stainless steel sanitary fittings

Stainless steel sanitary fittings

When dealing with processing systems which require contamination-free connections, we make use of stainless steel sanitary fittings.

These pipes are very much recommended for ideal use case because they are highly reliable, promise safety, and ensure uptime. This is also one of the reasons why stainless sanitary fittings are an ideal use case for:

  • Home and personal care
  • Biotech
  • Pharmacy
  • Food and beverages

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Specification of stainless steel sanitary fittings

Stainless steel sanitary tube fittings sizes Available material Stainless steel pharma fittings Connection standard
  • DN 10 to DN 150
  • 1/2″ – 12″
  • Werkstoff 1.4301 (AISI 304)
  • Werkstoff 1.4401 (AISI 316)
  • Werkstoff 1.4404 (AISI 316L)
  • Werkstoff 1.4307 (AISI 304L)
  • Werkstoff 1.4435 (AISI 316LMo)

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  • SMS
  • DIN
  • ISO
Length Stainless steel sanitary pipe fittings DIN standard Stainless steel sanitary fittings MTC & testing certificates
  • 12.7 mm
  • 21.5 mm
  • 28.6 mm
  • DIN 11851
  • DIN 11865
  • ASME BPE Standard DT-18
  • DIN 11864 (Union)
  • DIN EN 10204 3.1 test certificate
  • Surface roughness test certificate
  • 3.1/AD2000-W2 test certificate
Stainless steel milk pipe fittings surfaces Stainless steel hygienic pipe fittings Surface finish & roughness average (Ra) Types of stainless steel dairy pipe fittings
  • Ra ≤ 0,8 µm (Contact with product)
  • ID Finish <0.5µm
  • Ra ≤ 1,6 µm (Not in contact with product)
  • OD Finish <0.8­µm Polished
  • BS 4825 SS Unions: roughness average (Ra) of < 0.8 – 1.6 μ
  • ISO 2037 stainless steel clamp fitting: (Ra) of < 0.8 – 1.6 μ
  • DIN 11850 SS sanitary fittings: (Ra) of < 0.8 – 1.6 μ
  • ASME stainless steel hygienic fittings: (Ra) of < 0.4 – 0.8 μ
  • Bends:
    90° ISO Bend R=1.5D
    45° Bend R=1.5D
    90° BS Short Bend R=1.5D
    Tri-Clamp Ferrule Ended 90° Bend
  • Tees:
    Equal Full Tee
    Tri-Clamp Ferrule End Equal Tee
    Pulled Reducing Tee
    Full Equal Cross
    Pulled Cross
  • Special Tees: Swept Tee, Seagull Tee, Y-Piece, 45° Y-Piece
    Reducing Cones: Concentric Reducing Cone, Eccentric Reducing Cone
  • Hosetail: Tri-Clamp Ferrule Ended Hosetail, RJT Hose Liner, RJT Male Ended Hosetail
  • Domed End Cap: 1″ OD DOMED END CAP DESCALED 316, 1.5″ OD DOMED END CAP DESCALED 316, Metric Domed End Cap
  • Sprayball: 3/4″INLET x 40mm DIA SPRAYBALL 360° SPRAY PATTERN – 1.6mm
  • BPE/Pharmaceutical Fittings: 1/2″ DT7 90 ELBOW SFF1 316 WELD ENDS, 3/4″ DT7 90 ELBOW SFF1 316 WELD ENDS
  • Ancillary Products: Stainless Steel Chain
Types of SS dairy fittings Stainless steel hygienic fittings key features Sealing material
  • Unions
  • Reducers
  • Clamp fittings
  • Tees
  • Bends
  • Manufactured from cold-formed stainless steel single piece
  • Crevice-free welds
  • Tight tolerances
  • Easy-to-clean
  • Smooth weld ends
  • FKM
  • HNBR
  • EPDM
Stainless steel sanitary fittings electropolishing specification Other trade name Stainless steel dairy fittings international standards
  • SF0 : µ-in / µm
  • SF6 : 25 µ-in 0.64 µm
  • SF5 20 µ-in 0.51 µm
  • SF1 : 20 µ-in 0.51 µm
  • SF4 : 15 µ-in 0.38 µm
  • SF3 : 30 µ-in 0.76 µm
  • SF2 : 25 µ-in 0.64 µm
  • ASME/ BPE fittings
  • SS hygienic fittings
  • SS dairy fittings
  • Stainless steel sanitary fittings
  • Pharmaceutical fittings
  • ISO 2037
  • 3.1 MTC
  • EN 10357-A
  • EN 10272
  • BS 4825
  • ASME dimensions
  • ASTM A270 S2 / 3A

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SS sanitary fittings surface treatment Japanese finish name Finish number
  • Mill
  • Mechanical Polish
  • Electro Polish
  • Sanitary/Dairy Finish (150 grit, #4)
  • 3A Sanitary Finish (180 grit, #4)
  • Biotech Finish (200 to 220 grit, #4)
  • Fine Satin Finish (240 grit, #6)
  • Semi-Bright Finish (320 grit, #7)
  • Mirror Finish (400 grit, #8)
  • Super-Mirror Finish (500 grit, #8)
  • Buff #100 (3A Sanitary Finish)
  • No. 1 – Mill Finish (bright annealed, sand blasted, pickled, or tumbled)
  • No. 3 – Polished SS dairy fittings 32 Ra ID only
  • No. 5 – Polished SS sanitary fittings 32 Ra ID only
  • No. 7 – Polished SS sanitary fittings 32 Ra ID only
  • 3 A – Polished SS hygienic fittings 150 grit OD, 32 Ra ID

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There is an assumption that confuses everyone with respect to a BPE fittings and 3A fittings that they are identical or the same. But in reality, differences emerge when considering tolerance and packaging. Following ASME-BPE standards, BPE fittings require clean interior surface finishing and held together with tight tolerance than 3A fittings, making it an ideal; use case for food, beverage and dairy processing applications.

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Offering unique and characteristic properties, advantageous properties can be seen when it comes to stainless steel hygienic fittings. Below are some of their advantageous use cases:

  • By the means of orbital welding, these fittings tend to resolve weldability issues which are constant.
  • End users can now be flexible enough for mentioning about internal finishes of ss sanitary pipe fittings. This is because it has different six options for surface finished, both by the methods of electropolishing and mechanical polishing processes.

Considering the above advantages, below are some of the industries that demand for hygienic fittings stainless steel:

  • Pharmaceutical companies widely utilize ss hygienic pipe fittings.
  • Food and beverage industries; where it is a common pipe fitting used and widely demanded.
  • Another important utilization is seen in the biological industries, where they often demand stainless steel sanitary pipe fittings.
Stainless steel milk pipe fittings for food processors, SS dairy fittings with electropolishing and mechanical polishing in Middle East countries

For executing excellent and unique characteristics for wide range of industries, it is very important for the stainless steel dairy pipe fittings to be well inspected. Traceability: this factor plays a major role to provide constant hygienic needs of stainless steel milk pipe fittings; especially for industries such as pharmaceutical companies. It also defines the chemical composition of this pipe fittings. Material Test Report: also known as MTR, this is a document that records for the chemical, physical and other associated properties for stainless steel grade dairy pipe fittings.

Looking SS sanitary pipe fittings manufacturers? Buy stainless steel hygienic fittings & SS sanitary pipe fittings in ultra clean finish as per BS 4825 Part 2, DIN 11852/ DIN 11864, ISO 2851 standard

For stainless steel sanitary butt weld, SF1 finishing refers to the polishing or finishing process where we reduce the risk of contaminations, this is mainly because it comprises 0.51µm of surface roughness.