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Din 2391 81 Part 2 Seamless Precision Steel Tubes - China

price: contact company for price

DIN 2391-81 Part 2 defines the technical delivery conditions for

seamless precision steel tubes according to DIN 2391 Part 1 which are

made from the steel grades listed in section 5.

Precision tubes

Tubes according to this Standard are mainly used where accuracy to dimension and, possibly, small wall thicknesses and good surface condition are required.

Mechanical and technological properties

8.1. The mechanical properties depend on the condition on delivery as defined in table 3.

8.2. In technological testing (drift expandig test and flattening test) the samples must comply with the requirements of sections 11.2.3.2. and 11.2.3.3.

8.3. In the case of other steel grades and/or other conditions on delivery then those specified in tables 2, 3 and 8, the mechanical and technological properties must be mutually agreed. In these cases, the tubes are supplied according to quality grade C.

8.4. The steels listed in table 2 are deemed to be suitable for welding because of their chemical composition and metal lurgical treatment.

In the BK or BKW conditions on delivery, the mechanical properties are modified in the zone which has been subjectes to heating. This should be taken into account (see DIN 8528 Part 1) in assessing the weldability of a component.


Company Contact:


  • Phone: 862133780199

  • Address: No.273, Siping Road, Shanghai, China

  • Email: Email


Published date: October 7, 2013 -

  • Business Description: Sunny Steel provide a wide range of steel products as Steel pipes,

    Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite

    steel pipe used in the construction industry.

    We provide a wide range of steel products used in the construction industry:

    Steel pipes

    Seamless tube

    seamless pipes

    Alloy pipes

    Pipe fittings

    Composite steel pipe

    Contact us today to arrange a quote or estimate. Our steel fabrication products are real trusted and most affordable choice.

    Factory and industrial products

    In addition to our steel products for construction, we also offer a variety of steel fabrication products for use in industry. We provide local factories with steel cutting, fabricating, and distributing pipe fittings anc composite pipes.

    Our versatility ensures we will be able to provide you with the steel products you require to to complete a project, from start to finish.

    Contact us today to arrange a quote or estimate

    As a long established steel fabrication company in China, we can be trusted to deliver what you need, in the time you need it. We understand that in the construction industry time frame is often important.

    Whilst providing a quality, trusted service, we also place a high premium on quality craftsmanship. Our steel products are long lasting, and always meet our clients exact specifications.

    Our team

    Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

    Call us today to discuss your project's needs and find out what options are available.

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