Din 30670 pdf

S I ru U S I is the specific electrical coating resistance in? Subscription pricing is determined by: The specimen shall be supported in such a manner that its elastic response is eliminated. The test of the degree of cure of the epoxy resin coating by means of DSC measurement is also new, as is the cathodic disbondment test, which is frequently required at international level.

Seamless Alloy Steel Tube. The present standard specifies requirements for coatings that are applied to longitudinally or spirally welded or seamless steel pipes and fittings used for the construction of pipelines for conveying liquids or gases.

Stainless Steel Seamless Pipe. The specific electrical coating resistance ru shall be calculated from the following equation: Buyer should agree to any deviation from material use. Your Alert Profile lists the documents that will be monitored. The sample shall be cut in the cold This website uses cookies to improve your experience while you navigate through the website.

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Applying this standard ensures that the PE coating provides sufficient protection against the mechanical, thermal and chemical loads occurring during operation, transport, storage and installation. High performance GTS-PE system is developed so that its operating characteristics are not worse than the characteristics of 3-layer base coating.

The loss of adhesion is recognizable as a nearly circular area and is to be determined as follows. Record and document the force required to peel the strip. Production control is assured by the coater. Then, make another cut perpendicular to the axis of the previous cut to isolate the strip and lift a length of about 20 mm from the dinn. The has been formulated to bond directly to the main coating; epoxy is applied to the steel only. Pass the scanning electrode over the entire surface of the coating with the electrode touching the surface.

Other documents may be agreed. Then, centre the electroyte cell with the electrodes dln the hole. The supplier supports Trade Assurance — A free service that protects your orders from payment to delivery. This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website.

We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent.

You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience. Necessary cookies are absolutely essential for the website to function properly. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.

Previous editions DIN The present standard specifies requirements for coatings that are applied to longitudinally or spirally welded or seamless steel pipes and fittings used for the construction of pipelines for conveying liquids or gases.

Applying this standard ensures that the PE coating provides sufficient protection against the mechanical, thermal and chemical loads occurring during operation, transport, storage and installation. DIN EN ISO don requirements at international level for three-layer extruded polyethylene- and polypropylene-based coatings for steel pipes for petroleum and natural gas pipeline transportation systems.

For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document including any amendments applies.

Determination of gel time of thermosetting coating powders at a given temperature DIN EN ISOPreparation of steel substrates before application of paints and related products — Visual assessment of surface cleanliness — Part 1: The epoxy resin primer is applied as a powder. The adhesive can be applied either a powder or by extrusion. For extruded coatings a differentiation is made between sleeve extrusion and sheet extrusion.

Sintered polyethylene coatings are single- or multi-layer systems. The polyethylene powder is fused onto the pre-heated component until the desired coating thickness is reached. The coating type is to be stated in the purchase order. Other design temperatures may be agreed between the purchaser and the coater. Table 1 — Types di coating Type Design temperatures for sintered polyethylene coatings Design temperatures for extruded polyethylene coatings Area of application N from?

Any deviating requirements of the purchaser regarding the materials to be used shall be subject to agreement. Blast cleaning and any necessary subsequent work shall not result in the reduction of the minimum wall thickness specified in the technical delivery standards for the steel pipe. Residual abrasive dust shall be removed prior to coating. Table 2 gives an overview of the necessary information to be included in the delivery documents and technical data sheets. This data relates to the raw materials and can differ dun the values for the applied coating.

Information as to whether specimens were compression-moulded, sintered or extruded is also required. The minimum layer thickness is 60? The minimum layer thickness is? The peel strength requirements vary depending on whether the adhesive was applied as a powder or was extruded.

The is to be cooled after application to avoid unwanted deformation during transport. Depending on the nominal size, there are different minimum values for the normal total coating thickness n. Minimum layer thicknesses are given in Table 3 below. The total coating thickness coating system thickness is to be determined in accordance with Annex A. The table in this translation is the corrected version which will be published in a Corrigendum to the German version of this standard.

For three-layer coatings, the epoxy resin and adhesive layers at the pipe ends shall be removed to at least 80 mm from the welding bevel. A not less than 20 mm strip of epoxy resin or epoxy resin and adhesive should extend from the cutback of the polyethylene coating.

Other requirements may be agreed upon request and at the time of ordering. For single-layer sintered coatings the level of adhesion of the polyethylene to the steel substrate shall be assessed. The surface roughness Rz shall be between 40? After abrasive cleaning the quality of the pipe surface shall be visually checked. Prior to coating application, the metal surface of the steel pipe shall be free of all contaminants and deleterious matter such as dirt, oil, grease, weld beads, etc.

The same applies to the relevant extrusion line parameters.