... Usage: For conveying gas, water, and oil in both the oil and natural gas industries.Stainless Steel: ASTM ... P91 Usage: Tube for conveying gas, water, and oil in both and natural gas industries etc. Casing: Casing ... designed and skillfully manufactured. Our Casing Pipes & Oil Pipes are selling well all over the world and ... in any of our series of Casing Pipes & Oil Pipes, or need any related items, please ...