Tasso A/S

Cast-iron bar supply, stockholding and pre-machining

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Frederiksgade 37, 5000 Odense C, DenmarkSupported by Company profile
Pre-machined cast-iron componentsSupported by tasso-bar.com
ISO 9001:2015Supported by Public evidence

Explore Tasso A/S

Capabilities

Pre-machined cast-iron components

Cutting, milling, peeling and turning prepare cast-iron bars and blocks for downstream finish machining.

Milling and turning lengths up to 3 m, with order-specific tolerances
Peeling diameter 35–110 mm
Annealing and stress relieving available; post-transition processing provider and location remain unresolved

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Grey cast-iron bars

Four standard grey-iron grades with section-dependent mechanical properties.

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Ductile cast-iron bars

Nine ductile grades, including low-temperature and solution-strengthened options.

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Special cast-iron grades and profiles

Annealed 150C-A, phosphorus-alloyed 250C-PHOS and customer-agreed grades/profiles.

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Services

Annealed cast-iron supply

Price on request

Annealing to alter structure and improve machinability; grade examples EN-GJS-400-15C, EN-GJS-400-18C-LT, EN-GJL-150C-A and EN-GJL-150C. Post-transition processing location/provider requires confirmation.

Bar peeling

Price on request

Removal of the as-cast surface for automatic bar feeding and subsequent machining; diameter range 35–110 mm. Can be combined with cutting.

Cut-to-length bar supply

Price on request

Cast-iron bars cut to specified lengths, tolerances and batch sizes for downstream automatic machining.

Pre-milling of square and rectangular bars

Price on request

CNC and conventional rough/fine milling to customer drawings, cut pieces or half/full bars up to 3 m; tolerances agreed per order.

Round-bar turning

Price on request

CNC and conventional turning to agreed dimensions, with lengths up to 3 m; diameter and tolerance depend on the ordered bar.

Stress-relieved cast-iron supply

Price on request

Stress relieving of GJS and GJL grades on request, process range 500–650 °C. Treatment and provider agreed for the grade and desired stability after the casting transition.

Cast-iron material selection

Price on request

Technical support in selecting grade/profile and suitable first-stage processing for the component.

Non-standard material and component sourcing

Price on request

Partner-supported sourcing of requirements outside the standard programme. Fulfilment uses group companies and external partners.

Stockholding and bar delivery

Price on request

Stock-based material supply with prepared lengths and coordinated delivery; current availability and call-off terms agreed.

Certifications and standards

ISO 9001:2015
Bureau Veritas DK017885, manufacturing and sales of cast iron at Frederiksgade 37, valid through 19 May 2027 subject to continued conformity. The certificate predates the July 2026 transition; current scope/status requires confirmation.
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Credentials and recognition

BIRN Group EcoVadis Bronze
EcoVadis Bronze for VALD BIRN AS (GROUP), valid through January 2027. The recognition applies exclusively to the group entity and not to individual subsidiaries.
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About Tasso A/S

Tasso supplies continuous cast-iron bars and semi-machined components in grey, ductile and special grades. Buyers can source round, square, rectangular and agreed special profiles, with cutting, milling, turning, peeling and heat-treatment options. Material selection, traceability and order-specific inspection documents support applications in hydraulics, pumps, compressors, glass moulds, machine tools and industrial equipment. On 24 July 2026 Tasso announced its decision to discontinue its own cast-iron bar production in Odense and focus on sales, purchasing, warehousing and machining. The exact cessation timetable and post-transition heat-treatment provider and location remain unresolved. Founded in Odense in 1856 and part of BIRN since 1976, Tasso acquired the Italian stockist and machinist Bernareggi in 2021. Sourcing uses group companies and external suppliers. Supply documentation can include EN 10204:2004 types 2.2 and 3.1 requested at order, with actual batch-linked results for 3.1. Grade properties depend on section and mid-radius test location; hardness values are informative. Milling and turning cover lengths up to 3 m, peeling 35–110 mm diameters, and stress relieving 500–650 °C with treatment provider and conditions agreed after the operating-model transition.

Founded: 1856

Location

Odense C: Frederiksgade 37, 5000 Odense C, Denmark
Odense warehouse: Langegade 20, 5000 Odense C, Denmark

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Works with

Industries: Hydraulics and pneumatics, Pumps and compressors, Glass mould manufacturing, Machinery and machine tools, Steel manufacturing, Mould and tool manufacturing, Oil and gas equipment

Materials

Grey cast iron, Ductile cast iron, Special cast-iron grades

Processes

Cutting, Milling, Turning, Peeling, Annealing, Stress relieving

Service areas

Worldwide

Technical details

Material inspection documents: EN 10204:2004 types 2.2 and 3.1 requested at order; 3.1 tests linked to the actual batch
Supply quality checks: Tensile, Brinell hardness, microstructure, chemical and Charpy testing support; supplier-based QA and traceability, not an independent laboratory Service
EN-GJL-150C bar specification: Annealed grey iron; informative hardness 110–180 HB. Not suitable for hardening. Section-dependent minimum tensile values 110/100/90/80 N/mm² for 20–50/>50–100/>100–200/>200–400 mm sections. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJL-150C-A bar specification: Annealed special grey iron; minimum tensile strength 200 N/mm² for listed sections 20–400 mm and informative hardness 110–180 HB. Not suitable for hardening. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJL-200C bar specification: Grey iron with informative hardness 140–210 HB; limited strength/wear resistance. PDF mechanical table mislabels its grade as 250C, so tensile data require clarification. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJL-250C-PHOS bar specification: Phosphorus-alloyed grey iron for wear applications; informative hardness 190–260 HB. Sheet contains an inconsistent section-boundary sign; confirm mechanical table before specification. Not recommended for hardening. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJL-300C bar specification: Higher-strength grey iron, informative hardness 200–270 HB; hardenable. Minimum tensile values 220/205/195/185 N/mm² for the listed 20–50/>50–100/>100–200/>200–400 mm sections. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-400-15C bar specification: Ferritic ductile iron, informative hardness 120–180 HB. For sections 20–60/>60–120/>120–400 mm, minimum tensile strengths 400/390/370 N/mm² and elongations 15/14/11%. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-400-18C-LT bar specification: Low-temperature ductile iron, informative hardness 120–180 HB. At −20 °C, impact-energy average/minimum is 12/9 J for 20–60 mm and 10/7 J for >60–400 mm sections; application requirements agreed. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-500-14C bar specification: Solution-strengthened ductile iron, informative hardness 170–215 HB. Section-dependent minimum tensile strengths 500/480/470 N/mm² and elongations 14/12/10% for 20–60/>60–120/>120–400 mm. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-500-7C bar specification: Ductile iron, informative hardness 150–230 HB. For sections 20–60/>60–120/>120–400 mm, minimum tensile strengths 500/450/420 N/mm² and elongations 7/7/5%. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-600-3C bar specification: Hardenable ductile iron, informative hardness 180–250 HB. PDF gives minimum elongation 3% for its listed sections, differing from the webpage range; ordered specification to resolve the difference. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-700-2C bar specification: Hardenable ductile iron, informative hardness 210–305 HB. PDF minimum proof strength for >120–400 mm is 350 N/mm², differing from webpage range; use agreed technical documentation. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-800-2C bar specification: Hardenable ductile iron, informative hardness 240–330 HB. PDF round range 41–140 mm differs from webpage 44–140 mm; larger-section properties carry a written-agreement proviso. PDF round range 41–140 mm; square 40 × 40–280 × 280 mm, with availability and webpage discrepancy to be confirmed. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-450-12C bar specification: For 20–60 mm section, minimum proof/tensile strength 310/450 N/mm² and elongation 12%; larger-section properties are to be agreed. PDF informative hardness 160–210 HB differs from webpage 150–230 HB. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJS-550-6C bar specification: For 20–60 mm section, minimum proof/tensile strength 380/550 N/mm² and elongation 6%; larger-section properties to be agreed. Informative hardness 190–255 HB. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.
EN-GJL-250C bar specification: Grey iron with informative hardness 170–240 HB. Minimum tensile values 195/180/165/155 N/mm² for 20–50/>50–100/>100–200/>200–400 mm sections. Not recommended for hardening. Grade-sheet profile range round 41–440 mm and square 40 × 40–280 × 280 mm; rectangular and non-standard by agreement. Properties depend on section and mid-radius test location; hardness is informative. Grade-sheet ranges are not current stock availability.

Related categories

Bars & rods Custom machined components Custom mechanical parts & subassemblies Material stock & semi-finished forms Materials & consumables Mechanical & fluid components Bar peeling Contract stockholding & scheduled release

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Updated Sep 13, 2026

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