... WP91, A420 WPL6, A860 WHPY 42/52/60/65/70/80……Stainless steel: A403 WP304/TP304 , WP304L/TP304L , WP316/TP316 , ... painting, rust-proof oil, transparent oil, galvanizing,, hot galvanizingStainless steel: pickled,Polish Application FieldsChemical Industry /Petroleum Industry /Power Industry/Metallurgical ... or L/CCERTIFICATESGB/T19001-2008-ISO 9001:2008 seamless pipe fitting elbow a234 wpb sch40,80,xs,xxs