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Galvanized steel The standard reference

The standard reference EN 10326: 2004, EN10327: 2004, EN10336: 2007, EN10292: 2007, EN10143-2006, SAE J2745-2007, GMW3032-2007, GMW3399-2008 establishment.
This standard replaces Q / BQB420-2003, BZJ421-2005, BZJ422-2007.
This standard is compared with Q / BQB420-2003, major changes are as follows:
- Adjust the content of terms and definitions;
- Included BZJ421-2005 and BZJ422-2007 grade B340 / 590DPD + Z, B340 / 590DPD + ZF, B260LYD + ZF, B240P1D + ZF;
- Cancel the following add phosphorus steel grades: H220PD + Z, H220PD + ZF, H260PD + Z, H260PD + ZF;
- The original H series grades named modify that according to distinguish cold rolled and hot rolled substrate, the substrate, H series are revised as HC Series or HD Series;
- New grades are as follows:
Mild steel series: DC57D + Z, DC57D + ZF;
Duplex steel series: HC250 / 450DPD + Z, HC250 / 450DPD + ZF, HC300 / 500DPD + Z, HC300 / 500DPD + ZF, HC280 / 590DPD + Z, HC280 / 590DPD + ZF, HC340 / 590DPD + Z, HC340 / 590DPD + ZF, HC420 / 780DPD + Z, HC420 / 780DPD + ZF, HC500 / 780DPD + Z, HC500 / 780DPD + ZF, HC550 / 980DPD + Z;
Transformation induced plasticity steel series: HC380 / 590TRD + Z, HC380 / 590TRD + ZF, HC400 / 690TRD + Z, HC400 / 690TRD + ZF, HC420 / 780TRD + Z, HC420 / 780TRD + ZF;
Multiphase Steel Series: HC350 / 600CPD + Z, HC350 / 600CPD + ZF, HC500 / 780CPD + Z, HC500 / 780CPD + ZF, HC700 / 980CPD + Z, HC700 / 980CPD + ZF, HD620 / 750CPD + Z, HD620 / 750CPD + ZF, HD680 / 780CPD + Z, HD680 / 780CPD + ZF, HD720 / 950CPD + Z, HD720 / 950CPD + ZF;
- Redefining the chemical composition of various grades;
- Increase the provision of mechanical properties of aging;
- Increase the provision tensile strain mark;
- Increase the provision of BH2 measurement method;
- Modify the provisions of coating adhesion performance test;
- Modify the provisions of the coating surface structure;
- Modify the surface treatment code and corresponding description;
- Modify the size, shape and tolerances of the provisions;
- Modify the plate theory weight calculation requirements.
The Standard Appendix A, Appendix B, Appendix C, Appendix D is normative appendix; Annex E is informative appendix.
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