Stainless Steel · Ferrous

Electro Polish Fittings

Name: Stainless Steel Electro Polish Fittings
Brand: Ritvik Metal Impex
SKU: RMI-019

Electropolished stainless steel fittings with mirror-bright surface finish (Ra ≤ 0.5μm) for pharmaceutical, biotech, and semiconductor applications. Available in SS 316L with full compliance to ASME BPE, FDA 21 CFR, and cGMP requirements.

Material

Stainless Steel

Form

Fittings

Electro Polish Fittings Specifications

Chemical Composition for Electro Polish Fittings supplied by Ritvik Metal Impex
Grade	C	Mn	P	S	Si	Cr	Ni	Mo	Other
TP 304	0.08	2.00	0.045	0.030	1.00	18.0–20.0	8.0–11.0	—	N 0.10
TP 304L	0.035	2.00	0.045	0.030	1.00	18.0–20.0	8.0–13.0	—	N 0.10
TP 316	0.08	2.00	0.045	0.030	1.00	16.0–18.0	11.0–14.0	2.00–3.00	N 0.10
TP 316L	0.035	2.00	0.045	0.030	1.00	16.0–18.0	10.0–15.0	2.00–3.00	N 0.10
TP 321	0.08	2.00	0.045	0.030	1.00	17.0–19.0	9.0–12.0	—	Ti ≥ 5 × C
TP 347	0.08	2.00	0.045	0.030	1.00	17.0–19.0	9.0–13.0	—	Nb ≥ 10 × C
TP 310S	0.08	2.00	0.045	0.030	1.00	24.0–26.0	19.0–22.0	—	—
TP 317L	0.035	2.00	0.045	0.030	1.00	18.0–20.0	11.0–15.0	3.00–4.00	N 0.10

Note: Per ASTM A312 / A240. Values are maximum % by weight unless a range is shown. ASTM A312 permits 0.035% max carbon on L grades, where ASTM A240 plate specifies 0.030% max.

Mechanical Properties for Electro Polish Fittings supplied by Ritvik Metal Impex
Grade	Tensile Strength (min)	Yield Strength 0.2% (min)	Elongation (min)	Hardness (max)
TP 304	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW
TP 304L	485 MPa (70 ksi)	170 MPa (25 ksi)	35%	90 HRB / 192 HBW
TP 316	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW
TP 316L	485 MPa (70 ksi)	170 MPa (25 ksi)	35%	90 HRB / 192 HBW
TP 321	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW
TP 347	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW
TP 310S	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW

Note: Specified minimum values in the solution-annealed condition, per ASTM A312 / A240. Elongation is measured in 50 mm (2 in.).

Size Range & Supply Condition for Electro Polish Fittings supplied by Ritvik Metal Impex
Parameter	Range
Buttweld size range	1/4" NB to 32" NB seamless, up to 48" NB welded
Forged fitting size range	1/4" NB to 4" NB
Wall thickness	Schedule 5S to XXS
End connection	Buttweld, socketweld, screwed (NPT / BSP / BSPT)
Dimensional standards	ASME B16.9 (buttweld), B16.11 (forged), B16.28 (short radius), MSS SP-43 / SP-75 / SP-79 / SP-83 / SP-95
Material standards	ASTM A403 / A234 / A182 / A815 / B366

Physical Properties for Electro Polish Fittings supplied by Ritvik Metal Impex
Property	SS 304 / 304L	SS 316 / 316L
Density	8.00 g/cm³	8.00 g/cm³
Melting range	1400–1450 °C	1375–1400 °C
Modulus of elasticity	193 GPa	193 GPa
Thermal conductivity (100 °C)	16.2 W/m·K	16.3 W/m·K
Specific heat (0–100 °C)	500 J/kg·K	500 J/kg·K
Thermal expansion (0–100 °C)	17.2 µm/m·°C	15.9 µm/m·°C
Electrical resistivity	720 nΩ·m	740 nΩ·m
Max continuous service temp.	≈ 870 °C	≈ 925 °C
Magnetic response (annealed)	Non-magnetic	Non-magnetic

Note: Values at 20 °C unless stated. Thermal expansion matters when austenitic stainless is welded to carbon steel.

Equivalent Grades Across Standards for Electro Polish Fittings supplied by Ritvik Metal Impex
ASTM / AISI	UNS	EN / DIN	EN Name	JIS	GB
304	S30400	1.4301	X5CrNi18-10	SUS 304	06Cr19Ni10
304L	S30403	1.4307	X2CrNi18-9	SUS 304L	022Cr19Ni10
316	S31600	1.4401	X5CrNiMo17-12-2	SUS 316	06Cr17Ni12Mo2
316L	S31603	1.4404	X2CrNiMo17-12-2	SUS 316L	022Cr17Ni12Mo2
321	S32100	1.4541	X6CrNiTi18-10	SUS 321	06Cr18Ni11Ti
347	S34700	1.4550	X6CrNiNb18-10	SUS 347	06Cr18Ni11Nb
310S	S31008	1.4845	X8CrNi25-21	SUS 310S	06Cr25Ni20
430	S43000	1.4016	X6Cr17	SUS 430	10Cr17

Note: Cross-reference for enquiries written against European, Japanese or Chinese standards. Equivalents are close but not always identical — check the composition limits before substituting.

Ordering & Supply for Electro Polish Fittings supplied by Ritvik Metal Impex
Parameter	Detail
Minimum order quantity	5 kg (mixed sizes within a grade can be combined to reach the MOQ)
Price basis	Ex-works Mumbai, FOB or CIF — quoted per kg, per metre or per piece depending on the form
Lead time	Ready stock dispatched in 1–3 working days; mill orders typically 2–6 weeks
Certification	Mill test certificate to EN 10204 3.1 as standard; 3.2 with third-party witness, IBR and NACE MR0175 on request
Testing available	PMI, IGC (ASTM A262), hydrostatic, ultrasonic, radiographic, impact and hardness testing
Third-party inspection	Bureau Veritas, TÜV, DNV, SGS, Lloyd's Register, Intertek, RITES and client/EPC inspection
Packing	Wooden crates or pallets, plastic caps on pipe ends, VCI wrapping where required, seaworthy export packing
Payment terms	Advance, against proforma invoice, or LC at sight for export orders
Supply area	Across India and export to the Middle East, Europe, the USA, Africa and South East Asia
Product form	Fittings

Note: Cut lengths, non-standard sizes and special certification are available on request. Prices are quoted against grade, size, schedule and quantity.

Values shown are the specified minima and maxima published in the governing standards and are given for guidance. The mill test certificate supplied with your consignment reports the actual results for that heat.

Product Guide & Technical Article

Electropolished Fittings: Surface Finishing for Critical Applications

Electropolishing removes the outer layer of metal from stainless steel surfaces, resulting in an ultra-smooth, highly corrosion-resistant finish — the gold standard for pharmaceutical and biotech applications.

What is Electropolishing?

Electropolishing removes 20-40 microns of surface material using electrical current in an electrolytic bath, eliminating peaks, burrs, and contaminants, resulting in surface Ra ≤ 0.5μm.

Benefits

Enhanced corrosion resistance, ultra-smooth surface reduces bacterial adhesion, improved cleanability, bright reflective surface confirms cleanliness, removes heat tint from welding.

Standards & Compliance

ASME BPE for pharmaceutical use. FDA 21 CFR 177.2600 for food contact. cGMP compliance. Surface finish verified by Ra measurement with documented test certificates.

Applications

Pharmaceutical API equipment, biotechnology fermentation vessels, semiconductor chemical distribution, food & beverage hygienic equipment.

About Our Electro Polish Fittings Supply

Ritvik Metal Impex is a trusted Stainless Steel Electro Polish Fittings supplier and stockist based in Mumbai, Maharashtra. We supply electro polish fittings across India including Mumbai, Pune, Delhi, Ahmedabad, Chennai, Hyderabad, Surat, and Bangalore, as well as export to UAE, Saudi Arabia, UK, USA, and South East Asia. Our electro polish fittings are sourced from reputed mills with full material traceability and supplied with Mill Test Certificates (MTC). We offer competitive pricing, ready stock for standard sizes, and fast dispatch for urgent requirements. Contact us for the best Stainless Steel electro polish fittings price in India.

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Technical Guides

In-depth reading on grades, standards and specification for this product.

Piping Design

Buttweld vs Socketweld vs Threaded Fittings: Choosing the Right Joint

Buttweld, socketweld and threaded fittings compared: size ranges, ASME B16.9 and B16.11, Class 3000/6000/9000 and how to pick the right joint.

Read Guide →

Need a price for Electro Polish Fittings?

Tell us the grade, size, schedule and quantity and we will confirm stock position and a firm price. Every consignment ships with a mill test certificate traceable to the heat number.

+91 7073895597|suresh.prajapat@ritvikmetalimpex.com

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Electro Polish Fittings

Electro Polish Fittings Specifications