Specially designed for underground engineering, our buried 3PE anti-corrosion steel pipe strictly complies with API 5L and DIN30670 international standards. Available in seamless, LSAW and SSAW types, this 3LPE coated steel pipe provides excellent long-term corrosion resistance for buried oil, gas and water transmission pipelines. As a professional manufacturer, Hanlin Steel offers custom sizes and reinforced coating grades to adapt to various harsh soil and underground working conditions.