• xxsxx2v posted an update 6 months ago

    This standard applies to seamless circular tubes and pipes(hereinafter briefly referred to as “tubes”) made of unalloyed steels. These tubes are predominantly used in the construction of chemical plant, vessels, pipework and for general mechanical engineering purposes. They are designed to meet high performance requirements. Normally there are no limiting vaiues or the maximum permissible working pressure of these tubes. The permission working temperature shall not exceed 300℃
    The limits of application and other specifications given in this standard shall apply except in cases here other specifications are contained in codes of practice for specific fields of application, e.g. The Technische Regeln fur Dampfkessel (TRD) (Technical rules on steam boilers) or the Technische Regeln fur Druckbehalter (TRB) (Technical rules on pressure vessels), AD-Merkblatter (AD Instrucation sheets).
    The standard designation for tubes complying with this standard shall give in the following order:
    – the term “tube”;
    – DIN number of dimensional standard (DIN 1629);
    – characteristic dimensions of tube (outside diameter X wall thickness);
    – number of DIN Standard giving the for the steel grade
    – where applicable, the code letter N where the tuves are to be
    Tubes complying with this standard shall be manufactured by hot or cold rolling, hot pressing or hot and cold drawing
    Tubes manufactured by hot forming shall be supplied in the hot formed condition. In order to comply with the requirements regarding mechanical and technological properties the tubes shall, if necessary, be normalized. Cold rolled or cold drawn tubes shall be normalized after forming and supplied in this condition.
    The tubes shall have a smooth outside and inside surface consistent with the manufacturing process used.
    If the surfaces of the tubes are to be provided with an anti-corrosive agent with a limited life, this shall be agreed at the time of ordering. If special requirements are made on the tube (e.g. with regard to galvanizing, chromium plating ), this shall be agreed at the time of ordering.
    Other standards and documents referred to
    DIN 1683
    DIN 2391 Part 1
    DIN 2391 Part 2
    DIN 2413
    DIN 2440
    DIN 2441
    DIN 2470 Part 1
    DIN 8528 Part 1
    DIN 17121
    DIN 17175
    DIN 50049
    DIN 50104
    DIN 50125
    DIN 50136
    DIN 50137
    DIN 50138
    DIN 50140
    DIN 50145
    Stahl-Eisen-prufblattHigh performance seamless circular unalloyed steel tubes; technical delivery conditions
    Seamless precision steel tubes; dimensions
    seamless precision steel tubes; technical delivery conditions
    steel pipes; calculation of wall thickness with regard to internal pressure
    Medium-weight threaded steel tubes
    Hevyweight threaded steel tubes
    Seamless steel tubes; dimensions, masses per unit length
    Gas pipelines made of steel for working pressures up to 16 bar; requirements to be met by pipeline components
    Weldability; metallic materials, concepts
    Seamless circular steel tubes for structural steelwork; technical delivery conditions
    Seamless creep-resisting steel tubes; technical delivery conditions
    Documents on materials testing
    Internal pressure test on hollow products; leak tightness test up to a defined internal pressure;
    general specifications
    Testing of metallic materials; temsile test pieces, guidelines for their preparation
    Testing of metallic matreials; flattening test on tubes
    Testing of steel; ring expanding test on tubes
    Testing of metallic materials; ring tensile test on tubes
    Testing of metallic materials; tensile test on tubes and strips from tubes
    Testng of metallic materials; tensile test
    Probenahme und Probenvorbereitung fur die Stuckanalyse bai Stahlen
    (Sampling and sample preparation for the product analysis of steels.)
    Elektromagnetische Prufung von Tohren zum Nachweis der Dichtheit
    (Electromagnetic testing of tubes for leak tighness)
    DIN 1629 Grade St 37-0 Carbon Steel Seamless Tubes are also known as mild steel pipes and tubes.DIN 1629 Grade St 37-0 Tubes, are low-cost Low Carbon Steel Tubes with max 017 % carbon content easy to form and shape .These pipes are manufactured as per DIN Specification and commercially referred as cs pipes or ms pipes.Low Carbon Steel Pipes are not as hard as high carbon steel pipes,Though carburizing can increase its surface hardness.

    Production Method: Seamless Cold Drawn/Rolling or Hot Rolling
    Size range: O.D.:20-813mm W.T.:1-60mm Length:max12000mm
    Material grade: St37, St44, St52, 17Mn4, 15Mo3, 13CrMo44Seamless Structure Pipe