BS EN ISO 13680:2020
石油和天然气工业 耐腐蚀合金无缝管材产品 用作套管、油管、接箍毛坯和配件材料 交货技术条件
Petroleum and natural gas industries. Corrosion-resistant alloy seamless tubular products for use as casing, tubing, coupling stock and accessory material. Technical delivery conditions