Kalyani is a planned industrial town in Nadia district, about 50 km north of Kolkata, with three industrial park phases of engineering, chemical and agro-based units and a new park taking shape at Haringhata. We manufacture and electropolish SS 304L and 316L pipes and tubes and supply Kalyani's dairies, food plants and fabricators directly, with MTC EN 10204 3.1, 100% PMI testing and a measured Ra report on every order.
| Zone / MIDC | Typical End-Use | Application | Our Usual Spec |
|---|---|---|---|
| Kalyani Industrial Park, Phase II (about 134 acres) | Agro-based units: dairy products, mustard oil, rice | Milk and dairy transfer, CIP, product lines, clean utility | 304L, internal Ra ≤0.4 µm, surface report |
| Kalyani Industrial Park, Phase I (about 102 acres) | Engineering and ancillary, chemicals, metal-based units | Clean utility, DM water, skid assemblies | 304L / 316L, cut to drawing |
| Kalyani Industrial Park, Phase III (about 88 acres) | Engineering, chemicals, training centres | Clean utility, process water, laboratory lines | 304L / 316L |
| Haringhata Industrial Park (about 358 acres, being set up) | Planned industrial plants, near dairy and paper industries | Design-stage specs for hygienic and clean-utility lines | 304L, project quotes |
| Dairy and paper industries around Haringhata, Gayespur and Chakdaha | Dairy processing, paper | Milk and product lines, CIP; clean-side utility only in paper | 304L / 316L |
| Institutions (AIIMS Kalyani, University of Kalyani) | Hospital, laboratory and research | Clean-utility, laboratory and clean-steam lines | 316L / 304L, small lots |
A smooth, passivated interior that cleans fast between batches and doesn't hold milk fat or protein film.
A smooth, passivated interior for plants that wash, blend or heat their product, including edible-oil and rice-processing wash lines.
A smooth bore cleans faster and drains better, which matters for caustic and acid wash cycles.
DM-water, process-water and laboratory lines where cleanliness matters.
Cut-to-length pipe with heat-number traceability for the shops that supply dairies and food plants.
Quotes against your drawings and specification at design stage.
| Grade | UNS | WNR (EN) | Typical Process Use |
|---|---|---|---|
| SS 316L | S31603 | 1.4404 | Pharma, biotech, WFI loops, chloride or aggressive cleaning chemicals |
| SS 304L | S30403 | 1.4307 | Dairy, food, beverage, winery, general hygienic & utility lines |
| Duplex 2205 | S31803 / S32205 | 1.4462 | High yield strength, extreme chloride resistance, chemical & coastal duty |
| Super Duplex | S32750 / S32760 | 1.4410 / 1.4501 | High-pressure aggressive acids, offshore, harsh petrochemical streams |
| Service | Typical Industry Band | Ra µin (exact) | Sakshi Forge Offer |
|---|---|---|---|
| Pharma / biotech | Ra ≤0.25 to ≤0.4 µm | 9.8 to 15.7 µin | Standard: ≤0.4 µm (ASME BPE SF4) |
| Dairy / food / beverage | Ra ≤0.6 to ≤0.8 µm | 23.6 to 31.5 µin | Within standard offer (≤0.4 µm) |
| Semiconductor / UHP | Ra ≤0.13 to ≤0.25 µm | 5.1 to 9.8 µin | Available on custom drawing spec |
Weight (kg/m) = (OD − WT) × WT × K, where K = 0.02491 (304/304L, 7.93 g/cm³), 0.02507 (316/316L, 7.98 g/cm³) and 0.02450 (Duplex 2205, 7.80 g/cm³).
| Nominal Size | OD (mm) | WT (mm) | 304L (kg/m) | 316L (kg/m) | Duplex 2205 (kg/m) |
|---|---|---|---|---|---|
| ½" | 12.7 | 1.65 | 0.454 | 0.457 | 0.447 |
| ¾" | 19.05 | 1.65 | 0.715 | 0.720 | 0.703 |
| 1" | 25.4 | 1.65 | 0.976 | 0.982 | 0.960 |
| 1½" | 38.1 | 1.65 | 1.498 | 1.508 | 1.473 |
| 2" | 50.8 | 1.65 | 2.020 | 2.033 | 1.987 |
Interactive specification explorer with live filters (DOM-preserved for search indexing)
| Grade | Type | OD Range | Wall / Schedule | Internal Ra | Standards |
|---|---|---|---|---|---|
| SS 304L | Welded | ½" to 2" (12.7–50.8 mm) | 1.65 mm / SCH 10S | ≤0.4 µm | ASTM A269 / A270 |
| SS 304L | Seamless | ½" to 2" (12.7–50.8 mm) | 1.65–2.11 mm | ≤0.4 µm | ASTM A269 |
| SS 304L | Welded | 2½" to 6" (63.5–152.4 mm) | 2.11–2.77 mm | ≤0.4 µm | ASTM A269 / A270 |
| SS 304L | Welded | 8" to 12" (219.1–323.9 mm) | 2.77–3.05 mm | ≤0.4 µm | ASTM A269 |
Instant dimension calculation and Ra unit conversions for engineering procurement
Oils, cutting fluids and drawing residues are completely removed first. The finish is only as good as the chemical preparation.
Where weld heat tint or surface oxide is present, it is etched and activated so the pipe surface electropolishes uniformly.
The pipe acts as anode in an electrolytic acid bath. High microscopic peaks dissolve first, levelling the surface and stripping free iron.
The chromium-rich passive layer is stabilised per ASTM A967 / ASTM B912 to prevent future pitting and galvanic attack.
High-purity deionised water rinse removes all electrolytic residues, followed by hot air drying, capping and clean poly-sleeving.
| Document / Test | Status / Scope |
|---|---|
| MTC EN 10204 3.1 with heat-number traceability | Confirmed (Standard with every dispatch) |
| 100% PMI test and certificate | Confirmed (Handheld XRF on every pipe length) |
| Ra surface roughness test (stylus profilometer) & surface report | Confirmed (Supplied with measured Ra values) |
| Hydro (leak and pressure) test & certificate | Confirmed (Hydrostatic tested per ASTM spec) |
| Passivation verification and ferrite check | Confirmed (Reported in quality dossier) |
| QA inspection report and mill traceability | Confirmed (Approved origin mills) |
| Third-party inspection (TÜV / Bureau Veritas / SGS / DNV) | Accepted upon customer request |
Send your grade, OD × wall, Ra requirement, length and quantity. We'll quote within 24 hours.
Shop No. 05, Ground Floor, 113/117, Dr. MG Mahimtura Marg, 3rd Kumbharwada, Mumbai, Maharashtra 400004
Click below to view our direct engineer phone numbers, dispatch contacts, and official sales email.
We dispatch from Mumbai, and delivery time depends on size, quantity and stock; it is confirmed in writing with each quotation. We cap the pipe ends, sleeve each length and pack for the journey and for humid air, so the electropolished finish arrives undamaged. If your project has a fixed date, tell us when you enquire and we'll say plainly whether it fits.
Every pipe we supply to Kalyani adheres to strict international hygienic standards. Explore our core product specifications, Ra roughness certifications, and alloy grade properties: