product

Centerway steel co., ltd
steel tubular piles,ssaw pipe factory,api 5l lsaw pipe

  • DIN 30670


    DIN 30670 specifies requirements for factory-applied three-layer extruded polyethylene-based coatings, and polyethylene-based coatings for the corrosion protection of steel pipes and fittings. These one or multi-layered sintered PE coating provides sufficient protection against the mechanical, thermal and chemical loads occurring during operation, transport, storage and installation.

    The coatings of DIN 30670 are applied to longitudinally or DSAW pipes or seamless steel pipes and fittings used for the construction of pipelines for conveying liquids or gases. The coatings are suitable for the protection of buried or submerged steel pipes at design temperatures of -40 °C up to +80 °C.

    Specification:

    DIN 30670 seamless steel pipe with Polyethylene coatings

    DIN 30670 DSAW steel pipe with Polyethylene coatings

    DIN 30670 welded steel pipe with Polyethylene coatings

    Size: 10.3-1020mm * 2mm-40mm（1/4”- 40”）

    WT: 1.24mm - 60mm (SCH10-SCH160)

    Length: 5.8M; 6M; 11.8 M, 12M or as customer's requirement

    Material

    API 5L Gr. B X42 X46 X52 X56 X60.

    ASTM A106/53 Gr. A /Gr. B / Gr. C

    APL 5CT:J55, K55, N80, L80, C90, T95, P110

    DIN 1629: St 37.0, St 44.0, St 52.0

    DIN 17175: St35.8, St45.8, 17Mn4, 17Mn5, 15Mn5, 15Mo3, 13CrMo910

    EN10240: S235JO, S235JR, S355JR, P265TR1, S355JRH...

    Nominal size of pipe

    Minimum thickness of normal coating(n), in   mm

    Minimum   thickness of

    Reinforced   coating(v), in mm

    ≤DN100

    1.8

    2.5

    DN 100 - DN250

    2.0

    2.7

    DN 250 - DN500

    2.2

    2.9

    DN500 - DN800

    2.5

    3.2

    ≥DN800

    3.0

    3.7

    Anti-corrosion coating:

     Coating Type

      Coating Layer

     Coating thickness

    Three layers polyethylene

     Inside layer: epoxy (Green)

         2.0 -4.5mm

     Mid layer: adhesive (White)

    Outside layer:polyethylene (Black)

       Two layers polyethylene

    Inside layer: adhesive

         2.0 -4.5mm

    Outside layer: polythene

       Epoxy

     Epoxy

         200-400um

       Two layers epoxy

    Inside layer: epoxy (Green)

         400-800um

    Outside layer:intensity epoxy (sage green)

    Three layers polyethylene

    Inside layer: epoxy (Green)

     2.5 -3mm

    Mid layer: adhesive (White)

    Outside layer: polypropylene (White)


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