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.
|Products we supply|
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
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...
This standard ensures that PE coatings provide adequate protection against mechanical, thermal and chemical loads during operation, transportation, storage and installation. DIN EN ISO 21809-1 specifies the international standard requirements for the three layers extruded polyethylene and polypropylene based coatings for oil and gas pipeline transportation systems.
Nominal size of pipe
Minimum thickness of normal coating(n), in mm
Minimum thickness of
Reinforced coating(v), in mm
DN 100 - DN250
DN 250 - DN500
DN500 - DN800
Along any 1m length of pipe, the coating thickness may be up to 10% less than the minimum required, provided the thinner area does not cover more than 5cm².
We supply and manufacture steel tubes in accordance with EN, ASTM, JIS, GB standards, specified delivery conditions and final customer specifications for companies in the machinery, construction, chemical, mining, food, railway and communications, energy and petrochemical, shipbuilding, pharmaceutical, aerospace, plastics and other industries. Special sizes of steel pipes and delivery issues can be further negotiated and we provide a wide range of solutions for purchasing departments to select alternative grades without specifying product specifications.