Steel Tube Handbook - 2018

73 Production programm – see Tables 23–31 at pages 68–72. Production process Precision seamless steel tubes - cold finished Steel tubes for automotive industry Standards Steel EN 10305 Part1 E215, E235,E355 (others upon agreemant) ASTM A519 Table 1 and 2 of Standard DIN 2391 St 35, St 45, St 52 BS 6323 Part 4 CFS 3, CFS 4, CFS 5, CFS 8 NF A49-310 TU 37-b, TU 52-b, TU 20MV6 Deliveries according to TDC of customer upon agreement. ASTM A519 Seamless carbon and alloy steel mechanical tubing. DIN 2391 Seamless precision steel tubes. BS 6323-4 Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes. Part 4: Specific requirements for cold finished seamless steel tubes. NF A49-310 Steel tubes - Seamless precision tubes for mechanical application. Lengths • random 3–9 m • exact cut lengths • cutting of tubes (tubes can be also worked by other technologies – see page 86) Steel grade Steel is shown in the table of chemical composition and mechanical properties. Delivery conditions (see page 104) • +C (BK) – cold finished/hard (without heat treatment) • +LC (BKW) – cold finished/soft • +SR (BKS) – cold drawnn and stress relieve annealed • +N (NBK) – normalized Testing Tubes are tested according to the production standards. Eddy current test upon request according to EN ISO 10893-1,-2. Marking According to the production standards or, on request, colour stencilling along whole tube length according to customer specification. Surface protection Without protection or oiled. Packaging In round bundles of maximum weight 2 tons each, fastened with steel strips. Certified test report According to EN10204 -2.2, 3.1., 3.2 (See also page 7). List of dimensional standards and technical delivery conditions standards Steel grades chemical composition and mechanical properties can be found in tables in the chapter of Precision standard steel tubes.