tubing and casing

I.Anti-H2S corrosion tubing and casing APPLICABLE STANDARDS API SPEC 5CT Specification for casing and Tubing. ANSI/NACE MR0175 Metals sulfide stress cracking and stress corrosion resistance in sour oilfield environment. ANSI/NACE TM0177 Laboratory testing of metals for resistance to sulfide stress cracking and stress corrosion cracking in H2S environment. ISO 15156 Petroleum and natural gas industries-material for use in H2S containing environments in oil and gas production. ISO 13680 Petroleum and natural gas industries corrosion-resistant seamless tubes for use as casing , tubing and coupling stock technical delivery conditions third edition.