... /GB-T13401,Gost17375MateriaCarbon steel: ASTM A234 GR WPB , ST37.2 , ST35.8……Alloy steel: A234 WP5/WP9/WP11/WP22/WP91, ... Industry /Ship-building Industry PACKINGplywood cases, pallets, nylon bags or according to the customers' requirementsTRADE TERMFOB, CNF&CFR, CIFPAYMENTTT ... or L/CCERTIFICATESGB/T19001-2008-ISO 9001:2008 seamless pipe fitting elbow a234 wpb sch40,80,xs, ...