Tirupati district is the heart of southern Andhra Pradesh's industry, with Sri City on the Tamil Nadu border, electronics clusters at Tirupati and Renigunta, and pharma and food plants in the APIIC parks around them. We manufacture and electropolish SS 316L and 304L pipes and tubes and supply these plants directly, with MTC EN 10204 3.1, 100% PMI testing and a measured Ra report on every order.
Tirupati district runs from the temple city down to the Tamil Nadu border, and its industry sits in a few places. Sri City, a privately developed integrated township of more than 7,500 acres in Satyavedu and Varadaiahpalem mandals, is the largest, with land leased for 99 years, about 62,000 workers, and clusters in food processing, automotive, engineering, textiles and electronics. Global food and FMCG companies have committed close to a billion dollars there. Two Electronics Manufacturing Clusters, one at Tirupati and Renigunta and one at Sri City, house electronics plants, and APIIC industrial parks such as Attivaram in Ozili mandal list pharma units. Smaller estates, including Pagali near Yerpedu, add MSME manufacturing. Sri City is about 55 km north of Chennai, with the Tirupati and Chennai airports both within about 100 km.
A word on fit. Automotive assembly, textiles and most electronics assembly don't use electropolished pipe on their main processes. Where we're useful is food and FMCG plants, pharma units, dairy and beverage lines, DI-water and clean utilities in electronics plants, and the fabricators who serve them.
| Zone / MIDC | Typical End-Use | Application | Our Usual Spec |
|---|---|---|---|
| Sri City (7,500+ acres) | Food processing, FMCG, pharma, packaging, automotive, electronics | Hygienic transfer, CIP, purified water, DI water, clean utility | 304L for food; 316L for pharma and chloride-bearing duty; internal Ra ≤0.4 µm, surface report |
| Electronics Manufacturing Clusters (Tirupati, Renigunta, Sri City) | Mobile, consumer electronics and component plants | DI-water and clean-utility lines, laboratory lines | 316L / 304L |
| Attivaram APIIC park, Ozili mandal | Pharma and mixed units | WFI, purified water, clean utility | 316L |
| Renigunta, Srikalahasti and Pagali (Yerpedu) estates | Mixed MSME manufacturing and agro | Hygienic transfer, clean utility, skid assemblies | 304L, cut to drawing |
| Dairy, beverage and food units around Tirupati | Milk, beverages and packaged food | Milk transfer, CIP, product lines | 304L; 316L for acidic or salted products |
| Tada–Naidupeta belt | Footwear, mixed industry and port-linked units | Clean utility only | 304L |
| Fabricators and equipment builders | Local and Chennai-linked workshops serving the plants | Headers, skids, tank pipework, cut to drawing | 304L / 316L, traceable cut lengths |
A smooth, passivated interior that cleans easily and doesn't hold residue, for plants that mix, heat, fill or wash their product.
316L with a smooth internal surface and verified passivation, for pharma units in Sri City and the APIIC parks.
Smooth, passivated tubing where the plant's specification calls for stainless.
A smooth bore cleans faster and drains better, which matters for caustic and acid wash cycles.
Hygienic tubing for milk transfer, juices and drinks.
Cut-to-length pipe with heat-number traceability for the shops that serve the township and the parks.
| 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 Tirupati adheres to strict international hygienic standards. Explore our core product specifications, Ra roughness certifications, and alloy grade properties: