Surat combines textile processing, chemical and pharma estates, and a heavy-industry coast at Hazira. We manufacture and electropolish SS 316L and 304L pipes and tubes and supply Surat's plants directly, with MTC EN 10204 3.1, 100% PMI testing and a measured Ra report on every order.
Surat's industry is concentrated in a few large estates. Sachin GIDC, over 1,300 hectares with close to 5,000 operating units, is the biggest, with textile, chemical, pharma, engineering and packaging plants side by side, including makers of textile-processing machinery. Pandesara GIDC, about 810 hectares, is the dedicated textile hub, with dyeing, printing, weaving and garment units alongside dye and chemical makers. Hazira, on the south-western coast, is a heavy-industry and energy zone with its own marine terminal. Textile-processing and chemical belts also extend to Kosamba, Olpad and Palsana. A word on fit: Weaving, embroidery, garment-making and diamond polishing are mostly dry, so they don't call for electropolished pipe. Where we're useful is the wet side: process-water, dosing and steam-condensate lines in dye houses, the chemical and pharma units, and the machine builders who make equipment for them.
| Zone / MIDC | Typical End-Use | Application | Our Usual Spec |
|---|---|---|---|
| Sachin GIDC | Textile processing, chemicals, pharma, engineering, packaging; textile-machinery makers | Process water, dosing, purified water, clean utility, equipment manufacture | 316L / 304L, internal Ra ≤0.4 µm |
| Pandesara GIDC | Dyeing, printing, weaving and garment units; dye and chemical makers | Process water, dosing and steam-condensate lines, clean utility | 316L for salt-bearing lines; 304L for plain utility |
| Hazira (coastal heavy industry) | Energy, steel, engineering and process plants | Clean utility, DM water, laboratory and instrument lines | 316L; duplex 2205 for chloride duty |
| Kosamba, Olpad and Palsana belts | Textile processing, chemicals and mixed units | Process water, dosing and clean-utility lines | 316L / 304L |
| Equipment and machine builders (Sachin and city estates) | Textile-processing machinery, process equipment | Machine piping, headers, skids | 304L / 316L, cut to drawing |
A smooth, passivated interior that rinses clean and does not hold dye or chemical residue, chosen by media and temperature.
DM-water, condensate and instrument lines for processing and chemical plants.
316L with a measured Ra and verified passivation, for pharma units at Sachin.
Cut-to-length pipe with heat-number traceability, for the machine makers around Sachin.
316L and duplex 2205 for chloride-heavy, salt-air duty.
ASME BPE compliant EP pipes for specialized process units.
| 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 Surat adheres to strict international hygienic standards. Explore our core product specifications, Ra roughness certifications, and alloy grade properties: