Maklumat terperinci tentang kelengkapan paip keluli karbon DN450 90 bahan siku kimpalan darjah: Keluli karbon: A234 ASTM/ASME WPB,Keluli aloi WPC: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911 Keluli tahan karat: ASTM/ASME A403 WP 304-304L-304H-304LN-304N ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti ASTM/ASME A403 WP 321-321H A40TM Keluli WP 321-321H A40TM Rendah/ASME3: ASTM/ASME A402 WPL 3-WPL 6 tinggi