Penstocks are used in Barrages and Hydroelectric power plants.  These pipes are large diameter.

Bending capacity is maximum 3 meter.

Pipe fittings are also manufactured by this method.

Production Specifications:
Diameter range : 406 mm – 5000 mm
Thickness range : 6 – 30 mm
Quality of Material : Ak Çelik Boru could produce from all kinds of Raw Materials.
Production Standard : TS EN 10217-1

Internal and External Coating:

External Coating
Epoxy Coating: AWWA C-210, NFA 49709, TS EN 10289, AWWA C-213, API 5L7, NACE RP 0394

Polyethylene Coating: DIN 30670, NFA 49710, TS 5139, UNI 9099, ISO 21809-1

Bitumen Coating: TS 4356, DIN 30673, BS 534 Coal-tar

Cement Coating: DVGW GW 340

Internal Coating
Epoxy Coating: AWWA C-210, NFA 49709, API RP 5L2, TS EN 10289

Bitumen Coating: DIN 30673, BS 534

Cement Coating: AWWA C-205, BS 534, EN 10298

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