Gantry machining centre in a KALDERA assembly hall — Hall 04 — 12,000 t press frame, pre-shipment run

Complete heavy-machinery lines

Built to run for thirty years.

We design, cast, machine and commission the lines that forge, crush, roll and grind — then we stand behind them for the life of the plant.

Established1994
Delivered to46 countries
WorksNingbo · Rotterdam · Houston

01Position

A heavy machine is a promise about time. Ours are cut from steel we melt ourselves, measured to eight microns, assembled twice, and run under load before they are taken apart for the container. Nothing here is fast. Everything here is final.

Macro of a carburised gear flank — Ground gear flank, module 40 — 8 µm profile tolerance

Ladle pouring molten steel in the KALDERA foundry

Robotic welding cells joining a heavy steel frame

Technicians assembling a large industrial gearbox

02Capability

We melt our own steel.

Two 30-tonne electric arc furnaces and a ladle refining station. Every heat is spectrometer-verified before it is poured, so the chemistry printed on the certificate is the chemistry standing in your plant.

Furnace: 2 × 30 t EAF
Max casting: 68 t single piece

We weld to pressure-vessel code.

Sixty-four robotic cells and a certified manual shop working to ASME IX. Full-penetration seams on load-bearing structures are ultrasonically tested at one hundred per cent — not sampled.

Welding cells: 64 robotic
Seam inspection: 100 % UT

We build it twice.

Every line is fully assembled in Hall 04, run under load for seventy-two hours, then dismantled and marked for shipment. Your commissioning engineers meet a machine that has already worked.

Load trial: 72 h continuous
Crane capacity: 400 t single lift

03Equipment

Four lines, built to order, never from a catalogue.

2026 programme

KA-12000
Forging Press

Four-column hydraulic press for open-die and closed-die work, supplied with manipulator, furnace handling and a full control cabinet.

Press force: 12,000 t
Table: 4,200 × 2,600 mm
Stroke: 2,000 mm
Cycle: 42 s

CR-900
Cone Crusher

Hydraulic-set cone crusher for hard rock and ore. Bronze bushings, tramp-release accumulators, liners rated for twenty-six months of continuous duty.

Feed opening: 350 mm
Capacity: 620 t/h
Drive: 630 kW
Mass: 84 t

RM-4H
Rolling Mill

Four-high reversing stand with hydraulic gap control and automatic flatness correction. Delivered as a stand, or as a complete cold-rolling line.

Strip width: 1,650 mm
Rolling force: 25 MN
Line speed: 1,200 m/min
Gauge tol.: ± 0.008 mm

BM-56
Grinding Line

Ball mill with girth-gear or central drive, classifier, and the complete pneumatic circuit. Erected under our supervision, anywhere.

Cylinder: ⌀ 5.6 × 8.5 m
Throughput: 320 t/h
Drive: 4,500 kW
Liner life: 26 months

KALDERA Hall 04, 180,000 square metres under crane — Hall 04 — 62 m span, two 200 t cranes in tandem

04The works

Everything that matters happens under one roof.

0 m² Covered manufacturing floor across four halls
0 t Maximum single-piece lift, hook to hook
0 people Of whom 148 are engineers and metallurgists
0 years Of continuous production on the same site

Macro of a full-penetration weld seam — Full-penetration seam on 120 mm plate — ultrasonically tested end to end

Aerial view of the KALDERA export yard with crated equipment — Export yard — a 4,500 t/d grinding line, crated for Aktau

05Standards

Certified where it counts, audited where it hurts.

Third-party surveillance every twelve months. Every certificate below is current and available as a PDF on request, together with the mill certificates for your specific order.

Coordinate measuring machine probing a machined component — CMM room, 20 °C ± 1 — every critical feature, every unit

StandardScopeBodyValid

ISO 9001:2015Quality managementTÜV SÜD2028

ISO 14001:2015Environmental managementTÜV SÜD2028

ISO 45001:2018Occupational health & safetyTÜV SÜD2027

2006/42/ECCE — Machinery DirectiveNotified body 0044Ongoing

TR CU 010/2011EAC — Eurasian conformityRostest2027

ASME Section VIIIU-stamp, pressure partsNational Board2027

API Q1Oil & gas scopeAPI2026

06Delivery

Forty-six countries. Two of them by icebreaker.

14Europe
9Central Asia & Caucasus
8Southeast Asia
7Middle East & North Africa
5Latin America
3Sub-Saharan Africa

YearSectorCountryScope

2025CementKazakhstan4,500 t/d clinker grinding line

2025MiningChile2 × CR-900 crushing plant

2024SteelTürkiye1,650 mm cold rolling mill

2024ForgingPoland12,000 t press and manipulator

2023CementViet NamRaw mill and kiln drive train

2023SteelBrazilHot strip finishing stands F4–F7

Heavy-lift vessel loading oversized equipment at dawn — Ningbo–Zhoushan — heavy-lift sailing, 06:10

07Enquiries

Send us the tonnage and the tolerance.

Give us your throughput, your material and your site conditions. You will have a technical proposal and a budget price within ten working days — signed by the engineer who wrote it.

Request a quotationRequest a quotation

Salessales@kaldera-hi.com
Service+86 574 8800 1994
WorksNo. 9 Beilun Industrial Road, Ningbo