Valve Box

Grey Cast Iron

  • North America
  • ASTM A48 Class 30
  • ASTM A48 Class 35
  • Europe
  • EN-GJL-200
  • EN-GJL-250

Marking

Custom Logo and Special Lettering.

Coating

Bitumen, Spray Painting, Epoxy, Galvanizing

Other options

Special Lock, Chain Attachment for Anti-theft etc.

Grey Cast Iron

Country Standard Equivalent Grades of Grey Iron
ISO ISO 185 200 250
China GB 9439 HT200 HT250
USA ASTM A48 NO.30 NO.35
Germany Austria DIN 1691 GG20 GG25
European EN 1561 EN-GJL-200 EN-GJL-250
Japan JIS G5501 FC200 FC250
Italy UNI 5007 G20 G25
France NF A32-101 FGL200 FGL250
UK BS 1452 200 250
India IS 210 FG200 FG260
Spain UNF FG20 FG25
Belgium NBN 830-01 FGG20 FGG25
Australia AS 1830 T220 T260
Sweden SS 14 01 O120 O125
Norway NS11 100 SJG200 SJG250

Ductile Cast Iron

Country Standard Equivalent Grades of Ductile Iron
ISO ISO 1083 400-15 / 400-18 500-7
China GB 1348 QT400-18 QT500-7
USA ASTM A536 60-40-18 70-50-05
Germany Austria DIN 1693 GGG40 GGG50
European EN 1563 EN-GJS-400-15
EN-GJS-400-18
EN-GJS-500-7
Japan JIS G5502 FCD400 FCD500
Italy UNI 4544 GS370-17 GS500-7
France NF A32-201 FGS370-17 FGS500-7
UK BS 2789 400/17 500/7
India IS 1865 SG370/17 SG500/7
Spain UNF FGE38-17 FGE50-7
Belgium NBN 830-02 FNG38-17 FNG50-7
Australia AS 1831 300-17/ 400-12 500-7
Sweden SS 14 07 0717-02 0727-02
Norway NS11 301 SJK-400.3/ SJK-400 SJK-500

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Frequently Asked Questions

Valve boxes are made from robust materials like grey cast iron, offering excellent strength and longevity. Their construction helps withstand external pressure and environmental exposure, making them reliable for underground utility and infrastructure use.

Valve boxes are available with multiple coating options such as bitumen, epoxy and protective paint finishes. These coatings enhance corrosion resistance, improve durability and ensure reliable performance in underground and outdoor utility environments.

Yes, valve boxes are suitable for heavy traffic areas, as they are designed with high load-bearing capacity and durable construction to withstand continuous vehicular movement and external pressure in demanding environments.

Valve boxes provide easy access to underground utilities, simplifying inspections and repairs. This supports smoother infrastructure maintenance, reduces downtime and ensures long-term reliability across water supply and utility management systems.

Yes, Welcast’s valve boxes are supplied for international infrastructure projects, meeting global quality and performance standards. Their durable design and reliable construction make them suitable for diverse utility applications across various regions and environmental conditions.

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