Kakinada is a deep-water port city on the Godavari delta, with a multi-product SEZ, a pharma SEZ, fertiliser and chemical plants, liquid-storage terminals and one of India's busiest seafood-processing coasts. We manufacture and electropolish SS 316L and duplex 2205 pipes and tubes and supply Kakinada's plants, contractors and fabricators directly, with MTC EN 10204 3.1, 100% PMI testing and a measured Ra report on every order.
Kakinada sits on the Bay of Bengal in East Godavari district, and the state's presentations treat it as a port-led industrial corridor, with a deep-water port, an anchorage port and a SEZ. The Kakinada Special Economic Zone is a multi-product SEZ listed with sectors that include agro-based industry and liquid storage, and a separate pharma SEZ, formerly known as Ramky Pharma City, is notified at Kakinada Rural. The area sits at the southern end of the petroleum, chemicals and petrochemicals investment region that stretches 640 sq km between Visakhapatnam and Kakinada, with pharma, organic chemicals, industrial gases, agro-chemicals and fertiliser companies. The port handles liquid cargoes, including chemicals and speciality-chemical ships. The Godavari coast is also a major centre for aquaculture and seafood processing, and the district's other industrial estates include Peddapuram.
A word on fit. Main process piping in fertiliser, petrochemical and gas plants is carbon steel or specialty alloy, and it isn't electropolished. Where we're useful is the clean side of those plants (DM water, sampling, instrument and laboratory lines), the pharma SEZ's purified-water and WFI systems, seafood and food lines where brine rules out 304, and the contractors who maintain the plants.
| Zone / MIDC | Typical End-Use | Application | Our Usual Spec |
|---|---|---|---|
| Kakinada SEZ (multi-product) | Agro-based industry, liquid storage and mixed manufacturing | Hygienic transfer, DM water, clean utility | 316L / 304L; duplex 2205 for chloride duty |
| Pharma SEZ at Kakinada Rural (formerly Ramky Pharma City) | Pharma and bulk-drug manufacturing | WFI, purified water, CIP, clean utility, laboratory lines | 316L, internal Ra ≤0.4 µm, surface report |
| Port and liquid-terminal belt | Liquid cargo, chemicals, LPG and petroleum handling | Chloride-heavy utility, DM water, sampling lines; not cargo or process service | Duplex 2205; 316L for clean utility |
| Fertiliser, chemical and gas plants | Fertilisers, industrial chemicals, gases | DM-water, sampling, instrument and laboratory lines only | 316L / 304L, small-bore |
| Seafood and aquaculture processing | Shrimp and fish processing | Brine, wash and hygienic transfer lines, CIP | 316L (brine and chloride); 304L for dry-side lines |
| Peddapuram and other East Godavari estates | Mixed MSME manufacturing and agro | Hygienic transfer, clean utility | 304L |
| Contractors and fabricators | Maintenance, turnaround and equipment building | Spares, headers, skids, cut-to-length supply | 304L / 316L, traceable cut lengths |
316L with a smooth internal surface and verified passivation.
Duplex 2205 and 316L, chosen for chloride resistance rather than finish alone.
A smooth, passivated 316L interior that rinses clean and resists brine, for shrimp and fish processing.
Smooth, passivated 304L and 316L for demineralised-water and analysis lines.
Cut lengths supplied against your drawing and schedule.
Cut-to-length pipe with heat-number traceability for the shops that serve Kakinada's plants.
| 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 Kakinada adheres to strict international hygienic standards. Explore our core product specifications, Ra roughness certifications, and alloy grade properties: