What piping material is used in Mining & Metallurgy plants?
Mining & Metallurgy service typically specifies Heavy-wall ASTM A105 and A234 WPB for slurry service, A182 F316L and duplex F51 for process and acid circuits, Hastelloy C276 and titanium Grade 2 for leaching duty, and hardfaced components on the wo. Kalp Alloys manufactures these grades in Ahmedabad, India, with EN 10204 3.1 or 3.2 mill test certificates issued in its own name.
Key Takeaways
- Grades this sector specifies: Heavy-wall ASTM A105 and A234 WPB for slurry service, A182 F316L and duplex F51 for process and acid circuits, Hastelloy C276 and titanium Grade 2 for leaching duty, and hardfaced components on the worst wear positions.
- Standards applied: ASME B16.5 and B16.47 for flanges, ASME B16.9 with ASTM A234 for fittings, ASTM A106 and API 5L for pipe, with SANS and AS standards appearing on African and Australian projects.
- Documentation demanded: EN 10204 3.1 certification with wall thickness verification on heavy-schedule items, hardness results where hardfacing is applied, and PMI on alloy items used in acid circuits.
- Kalp Alloys manufactures all of the above at its own plant in Ahmedabad, with certificates issued in its own name.
- Third-party inspection by SGS, BV, TUV or Lloyds can be witnessed before dispatch.
- Size range NPS 1/2 inch to 48 inch, Class 150 to 2500 and PN6 to PN64.
What makes Mining & Metallurgy service demanding
Mining and mineral processing is an abrasion problem first and a corrosion problem second. Slurry lines wear from the inside, elbows fail before straights, and acid circuits in hydrometallurgy attack anything not deliberately selected for them.
Grades specified in Mining & Metallurgy plants
Heavy-wall ASTM A105 and A234 WPB for slurry service, A182 F316L and duplex F51 for process and acid circuits, Hastelloy C276 and titanium Grade 2 for leaching duty, and hardfaced components on the worst wear positions.
Selection is made circuit by circuit rather than plant-wide. The table below maps the common positions in a mining & metallurgy plant to the material normally specified for each.
| Application | Material normally specified |
|---|---|
| Slurry and tailings lines | Heavy-wall A106 pipe with SCH 80 and above A234 WPB elbows |
| Leaching and acid circuits | Hastelloy C276, titanium Grade 2 and F316L |
| Smelter cooling water | Cu-Ni 90/10 and duplex F51 on brackish water |
| Process water and reagent dosing | A182 F316L with PTFE-gasketed joints |
| Dewatering and pump discharge | Heavy-wall carbon steel, large-bore flanges |
| Compressed air and utilities | A105 carbon steel and A234 WPB |
Standards this sector works to
ASME B16.5 and B16.47 for flanges, ASME B16.9 with ASTM A234 for fittings, ASTM A106 and API 5L for pipe, with SANS and AS standards appearing on African and Australian projects.
Both the dimensional standard and the material specification appear on a correct purchase order, because they govern different things. A line item reading “weld neck flange, 6 inch, Class 300, RF, ASTM A182 F316L, ASME B16.5” is unambiguous; one reading “6 inch stainless flange” is not.
Documentation Mining & Metallurgy buyers require
EN 10204 3.1 certification with wall thickness verification on heavy-schedule items, hardness results where hardfacing is applied, and PMI on alloy items used in acid circuits.
On slurry service, specify by wall thickness and elbow radius rather than by nominal size. A long-radius heavy-schedule elbow lasts several times longer than a short-radius SCH 40 one on the same duty, and the cost difference is recovered on the first avoided shutdown.
The full document pack, and how to read each block of the certificate, is set out on our EN 10204 mill test certificate page.
Supplying Mining & Metallurgy projects from Ahmedabad
Kalp Alloys is a manufacturer, not a stockist. Forging, machining and inspection run at our own facility at 5, Jay Vijay Industrial Estate, B/h. Akash Vikas Estate, Keval Kanta Road, Rakhial, Ahmedabad, so the heat number traces to our own record and the mill test certificate carries our name.
For a sector where the certificate forms part of an approval file, a validation record or a class submission, that difference is the whole argument. A certificate passed down a trading chain names a mill the buyer cannot query and did not choose.
Stock sizes dispatch in three to seven days. Made-to-drawing items carry a firm lead time quoted at order confirmation, and there is no minimum order on stock sizes.
Frequently Asked Questions
Heavy-wall ASTM A105 and A234 WPB for slurry service, A182 F316L and duplex F51 for process and acid circuits, Hastelloy C276 and titanium Grade 2 for leaching duty, and hardfaced components on the worst wear positions.
ASME B16.5 and B16.47 for flanges, ASME B16.9 with ASTM A234 for fittings, ASTM A106 and API 5L for pipe, with SANS and AS standards appearing on African and Australian projects.
EN 10204 3.1 certification with wall thickness verification on heavy-schedule items, hardness results where hardfacing is applied, and PMI on alloy items used in acid circuits.
Yes. Inspection by SGS, BV, TUV or Lloyds can be witnessed at our Ahmedabad plant before dispatch, and the release note is issued with the EN 10204 3.2 certificate.
Yes. Non-standard bores, thicknesses, drilling patterns and facing finishes are produced to customer drawing. Send the drawing by email or WhatsApp at +91 81608 73937 and the technical team responds with grade and forging options.
No. There is no minimum order on stock sizes and trial quantities are accepted, so a buyer can verify material and documentation before committing to a project quantity.