... weld neck, bland flange(class150-1500). Size:1/2"-80" WT:150-2500lbs ClassA-E Material:cs,alloy steel, ss Qualification:ISO9001 ... , A182, F43, A276 S32750,A705 631,632,A961, A484, Alloy steel(ASTM A694 F42,F46,F52,F56,F60,F65,F70 ... ,F5,F9,F91,F1ECT)qualificationISO9001:2008 Quality Mangement System Certificate,ISO 14001 Environment Mangement System Certificate,OHSAS18001 Occupational Health & Safety ...