Nellore, on the Chennai–Kolkata highway about 26 km from Krishnapatnam Port, is the centre of a coast where a port-led industrial city, a large agro-processing SEZ and a planned refinery and petrochemical project are being built. We manufacture and electropolish SS 316L and duplex 2205 pipes and tubes and quote against your drawings from design stage, with MTC EN 10204 3.1, 100% PMI testing and a measured Ra report on every order.
Nellore is a municipal corporation of about 6 lakh people on National Highway 16, with Krishnapatnam Port, India's largest private-sector deep-water port, about 26 km away. Three large projects shape its industrial future. Krishnapatnam Industrial Area (KRIS City), a Chennai–Bengaluru Industrial Corridor node, is planned as a port-led industrial city, with a first-phase area of about 2,500 acres and focus sectors that include auto components, electronics, agro and food processing, pharma and biotech, and textiles. The IFFCO Kisan SEZ, an agribusiness SEZ of about 2,776 acres, is designed as an integrated agro-park for food processing and global manufacturers. Further up the coast, a refinery and petrochemical project requiring about 6,000 acres, and the Ramayapatnam port, are in development stages in the Kavali area. The district's coast is also known for aquaculture and seafood processing.
A word on fit. Large refinery and petrochemical plants run on carbon steel and specialty alloy, and their main process piping isn't electropolished. Where we're useful is the clean utilities and food, seafood and pharma lines in the new industrial city and agro-SEZ, chloride-heavy coastal duty where duplex outperforms standard stainless, and the EPC contractors who build all of it.
| Zone / MIDC | Typical End-Use | Application | Our Usual Spec |
|---|---|---|---|
| Krishnapatnam Industrial Area (KRIS City), CBIC node | Planned auto, electronics, agro-food, pharma and textile plants | Design-stage specs for clean utility, purified water, hygienic transfer | 316L / 304L, project quotes; duplex 2205 for coastal duty |
| IFFCO Kisan SEZ (about 2,776 acres) | Agribusiness and food processing, integrated agro-park | Hygienic transfer, wash lines, CIP, design-stage specs | 304L; 316L for chloride-bearing wash or sanitiser |
| Krishnapatnam Port and port-linked industry | Port services, bulk and liquid handling | Chloride-heavy and salt-air duty, clean utility | Duplex 2205; 316L for clean utility |
| Kavali coast: planned refinery and petrochemical project, Ramayapatnam port | Planned energy and petrochemical complex | Design-stage clean utilities, DM water, sampling; not process service | 316L / duplex 2205, project quotes |
| Aquaculture and seafood processing | Shrimp and fish processing, feed | Brine, wash and hygienic transfer lines, CIP | 316L (brine and chloride); 304L for dry-side lines |
| Nellore city industrial estates and fabricators | MSME manufacturing, rice and agro processing, equipment builders | Headers, skids, small-lot cut-to-length supply | 304L / 316L, traceable cut lengths |
Duplex 2205 and 316L, chosen for chloride resistance rather than finish alone.
Quotes against your drawings and specification, with the document pack you'll need for commissioning.
A smooth, passivated interior that cleans easily and resists brine, for plants that wash, blend or heat their product.
316L with a smooth internal surface and verified passivation.
Smooth, passivated 304L and 316L for demineralised-water and analysis lines.
Cut-to-length pipe with heat-number traceability for the shops and contractors who build for the coast.
| 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 316L | Welded | ½" to 2" (12.7–50.8 mm) | 1.65 mm / SCH 10S | ≤0.4 µm (SF4) | ASTM A269 / A270, ASME BPE |
| SS 316L | Seamless | ½" to 2" (12.7–50.8 mm) | 1.65–2.77 mm / SCH 40S | ≤0.4 µm (SF4) | ASTM A269, ASME BPE |
| SS 316L | Welded | 2½" to 6" (63.5–152.4 mm) | 2.11–2.77 mm / SCH 10S | ≤0.4 µm | ASTM A269 / A270 |
| SS 316L | Seamless | 2½" to 6" (63.5–152.4 mm) | 2.77–3.05 mm / SCH 40S | ≤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.
Every pipe we supply to Nellore adheres to strict international hygienic standards. Explore our core product specifications, Ra roughness certifications, and alloy grade properties: